v2.4.17

.gitattributes

@@ -1 +0,0 @@
-*.js    text eol=lf

.github/ISSUE_TEMPLATE.md

@@ -1,27 +0,0 @@
-**Bug report or feature request?** 
-
-<!-- Note: sub-optimal but correct code is not a bug -->
-
-**ES5 or ES6+ input?** 
-
-<!-- Note: for ES6 see: https://github.com/mishoo/UglifyJS2/tree/harmony#harmony -->
-
-**Uglify version (`uglifyjs -V`)**
-
-**JavaScript input**
-
-<!--
-    A complete parsable JS program exhibiting the issue with
-    UglifyJS alone - without third party tools or libraries.
-    Ideally the input should be as small as possible.
-    Post a link to a gist if necessary.
--->
-
-**The `uglifyjs` CLI command executed or `minify()` options used.**
-
-**JavaScript output or error produced.**
-
-<!--
-    Note: `uglify-js` only supports ES5. 
-    Those wishing to minify ES6 should use `uglify-es`.
--->

.gitignore

@@ -1,3 +1,2 @@
-/node_modules/
-/npm-debug.log
 tmp/
+node_modules/

.travis.yml

@@ -1,14 +1,6 @@
 language: node_js
+before_install: "npm install -g npm"
 node_js:
+    - "0.8"
     - "0.10"
-    - "0.12"
-    - "4"
-    - "6"
-    - "8"
-env:
-    - UGLIFYJS_TEST_ALL=1
-matrix:
-  fast_finish: true
-sudo: false
-cache:
-  directories: tmp
+    - "0.11"

appveyor.yml

@@ -1,24 +0,0 @@
-environment:
-  matrix:
-  - nodejs_version: "0.10"
-  - nodejs_version: "0.12"
-  - nodejs_version: "4.0"
-  - nodejs_version: "6.0"
-
-matrix:
-  fast_finish: true
-
-platform:
-  - x86
-  - x64
-
-install:
-  - ps: Install-Product node $env:nodejs_version $env:platform
-  - npm install
-
-test_script:
-  - node --version
-  - npm --version
-  - npm test
-
-build: off

bin/uglifyjs

@@ -3,399 +3,478 @@
 
 "use strict";
 
-// workaround for tty output truncation upon process.exit()
-[process.stdout, process.stderr].forEach(function(stream){
-    if (stream._handle && stream._handle.setBlocking)
-        stream._handle.setBlocking(true);
-});
-
-var fs = require("fs");
-var info = require("../package.json");
-var path = require("path");
-var program = require("commander");
 var UglifyJS = require("../tools/node");
+var sys = require("util");
+var yargs = require("yargs");
+var fs = require("fs");
+var path = require("path");
+var async = require("async");
+var acorn;
+var ARGS = yargs
+    .usage("$0 input1.js [input2.js ...] [options]\n\
+Use a single dash to read input from the standard input.\
+\n\n\
+NOTE: by default there is no mangling/compression.\n\
+Without [options] it will simply parse input files and dump the AST\n\
+with whitespace and comments discarded.  To achieve compression and\n\
+mangling you need to use `-c` and `-m`.\
+")
+    .describe("source-map", "Specify an output file where to generate source map.")
+    .describe("source-map-root", "The path to the original source to be included in the source map.")
+    .describe("source-map-url", "The path to the source map to be added in //# sourceMappingURL.  Defaults to the value passed with --source-map.")
+    .describe("source-map-include-sources", "Pass this flag if you want to include the content of source files in the source map as sourcesContent property.")
+    .describe("in-source-map", "Input source map, useful if you're compressing JS that was generated from some other original code.")
+    .describe("screw-ie8", "Pass this flag if you don't care about full compliance with Internet Explorer 6-8 quirks (by default UglifyJS will try to be IE-proof).")
+    .describe("expr", "Parse a single expression, rather than a program (for parsing JSON)")
+    .describe("p", "Skip prefix for original filenames that appear in source maps. \
+For example -p 3 will drop 3 directories from file names and ensure they are relative paths. \
+You can also specify -p relative, which will make UglifyJS figure out itself the relative paths between original sources, \
+the source map and the output file.")
+    .describe("o", "Output file (default STDOUT).")
+    .describe("b", "Beautify output/specify output options.")
+    .describe("m", "Mangle names/pass mangler options.")
+    .describe("r", "Reserved names to exclude from mangling.")
+    .describe("c", "Enable compressor/pass compressor options. \
+Pass options like -c hoist_vars=false,if_return=false. \
+Use -c with no argument to use the default compression options.")
+    .describe("d", "Global definitions")
+    .describe("e", "Embed everything in a big function, with a configurable parameter/argument list.")
 
-var skip_keys = [ "cname", "enclosed", "parent_scope", "scope", "thedef", "uses_eval", "uses_with" ];
-var files = {};
-var options = {
-    compress: false,
-    mangle: false
-};
-program.version(info.name + " " + info.version);
-program.parseArgv = program.parse;
-program.parse = undefined;
-if (process.argv.indexOf("ast") >= 0) program.helpInformation = UglifyJS.describe_ast;
-else if (process.argv.indexOf("options") >= 0) program.helpInformation = function() {
-    var text = [];
-    var options = UglifyJS.default_options();
-    for (var option in options) {
-        text.push("--" + (option == "output" ? "beautify" : option == "sourceMap" ? "source-map" : option) + " options:");
-        text.push(format_object(options[option]));
-        text.push("");
-    }
-    return text.join("\n");
-};
-program.option("-p, --parse <options>", "Specify parser options.", parse_js());
-program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js());
-program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js());
-program.option("--mangle-props [options]", "Mangle properties/specify mangler options.", parse_js());
-program.option("-b, --beautify [options]", "Beautify output/specify output options.", parse_js());
-program.option("-o, --output <file>", "Output file (default STDOUT).");
-program.option("--comments [filter]", "Preserve copyright comments in the output.");
-program.option("--config-file <file>", "Read minify() options from JSON file.");
-program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
-program.option("--ie8", "Support non-standard Internet Explorer 8.");
-program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
-program.option("--name-cache <file>", "File to hold mangled name mappings.");
-program.option("--self", "Build UglifyJS as a library (implies --wrap UglifyJS)");
-program.option("--source-map [options]", "Enable source map/specify source map options.", parse_source_map());
-program.option("--timings", "Display operations run time on STDERR.")
-program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
-program.option("--verbose", "Print diagnostic messages.");
-program.option("--warn", "Print warning messages.");
-program.option("--wrap <name>", "Embed everything as a function with “exports” corresponding to “name” globally.");
-program.arguments("[files...]").parseArgv(process.argv);
-if (program.configFile) {
-    options = JSON.parse(read_file(program.configFile));
-}
-if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
-    fatal("ERROR: cannot write source map to STDOUT");
-}
-[
-    "compress",
-    "ie8",
-    "mangle",
-    "sourceMap",
-    "toplevel",
-    "wrap"
-].forEach(function(name) {
-    if (name in program) {
-        options[name] = program[name];
-    }
-});
-if (program.beautify) {
-    options.output = typeof program.beautify == "object" ? program.beautify : {};
-    if (!("beautify" in options.output)) {
-        options.output.beautify = true;
-    }
-}
-if (program.comments) {
-    if (typeof options.output != "object") options.output = {};
-    options.output.comments = typeof program.comments == "string" ? program.comments : "some";
-}
-if (program.define) {
-    if (typeof options.compress != "object") options.compress = {};
-    if (typeof options.compress.global_defs != "object") options.compress.global_defs = {};
-    for (var expr in program.define) {
-        options.compress.global_defs[expr] = program.define[expr];
-    }
-}
-if (program.keepFnames) {
-    options.keep_fnames = true;
-}
-if (program.mangleProps) {
-    if (program.mangleProps.domprops) {
-        delete program.mangleProps.domprops;
-    } else {
-        if (typeof program.mangleProps != "object") program.mangleProps = {};
-        if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
-        require("../tools/domprops").forEach(function(name) {
-            UglifyJS._push_uniq(program.mangleProps.reserved, name);
-        });
-    }
-    if (typeof options.mangle != "object") options.mangle = {};
-    options.mangle.properties = program.mangleProps;
-}
-if (program.nameCache) {
-    options.nameCache = JSON.parse(read_file(program.nameCache, "{}"));
-}
-if (program.output == "ast") {
-    options.output = {
-        ast: true,
-        code: false
+    .describe("comments", "Preserve copyright comments in the output. \
+By default this works like Google Closure, keeping JSDoc-style comments that contain \"@license\" or \"@preserve\". \
+You can optionally pass one of the following arguments to this flag:\n\
+- \"all\" to keep all comments\n\
+- a valid JS regexp (needs to start with a slash) to keep only comments that match.\n\
+\
+Note that currently not *all* comments can be kept when compression is on, \
+because of dead code removal or cascading statements into sequences.")
+
+    .describe("preamble", "Preamble to prepend to the output.  You can use this to insert a \
+comment, for example for licensing information.  This will not be \
+parsed, but the source map will adjust for its presence.")
+
+    .describe("stats", "Display operations run time on STDERR.")
+    .describe("acorn", "Use Acorn for parsing.")
+    .describe("spidermonkey", "Assume input files are SpiderMonkey AST format (as JSON).")
+    .describe("self", "Build itself (UglifyJS2) as a library (implies --wrap=UglifyJS --export-all)")
+    .describe("wrap", "Embed everything in a big function, making the “exports” and “global” variables available. \
+You need to pass an argument to this option to specify the name that your module will take when included in, say, a browser.")
+    .describe("export-all", "Only used when --wrap, this tells UglifyJS to add code to automatically export all globals.")
+    .describe("lint", "Display some scope warnings")
+    .describe("v", "Verbose")
+    .describe("V", "Print version number and exit.")
+    .describe("noerr", "Don't throw an error for unknown options in -c, -b or -m.")
+    .describe("bare-returns", "Allow return outside of functions.  Useful when minifying CommonJS modules.")
+    .describe("keep-fnames", "Do not mangle/drop function names.  Useful for code relying on Function.prototype.name.")
+    .describe("quotes", "Quote style (0 - auto, 1 - single, 2 - double, 3 - original)")
+
+    .alias("p", "prefix")
+    .alias("o", "output")
+    .alias("v", "verbose")
+    .alias("b", "beautify")
+    .alias("m", "mangle")
+    .alias("c", "compress")
+    .alias("d", "define")
+    .alias("r", "reserved")
+    .alias("V", "version")
+    .alias("e", "enclose")
+    .alias("q", "quotes")
+
+    .string("source-map")
+    .string("source-map-root")
+    .string("source-map-url")
+    .string("b")
+    .string("m")
+    .string("c")
+    .string("d")
+    .string("e")
+    .string("comments")
+    .string("wrap")
+    .string("p")
+
+    .boolean("expr")
+    .boolean("source-map-include-sources")
+    .boolean("screw-ie8")
+    .boolean("export-all")
+    .boolean("self")
+    .boolean("v")
+    .boolean("stats")
+    .boolean("acorn")
+    .boolean("spidermonkey")
+    .boolean("lint")
+    .boolean("V")
+    .boolean("noerr")
+    .boolean("bare-returns")
+    .boolean("keep-fnames")
+
+    .wrap(80)
+
+    .argv
+;
+
+normalize(ARGS);
+
+if (ARGS.noerr) {
+    UglifyJS.DefaultsError.croak = function(msg, defs) {
+        sys.error("WARN: " + msg);
     };
 }
-if (program.parse) {
-    if (!program.parse.acorn && !program.parse.spidermonkey) {
-        options.parse = program.parse;
-    } else if (program.sourceMap && program.sourceMap.content == "inline") {
-        fatal("ERROR: inline source map only works with built-in parser");
-    }
+
+if (ARGS.version || ARGS.V) {
+    var json = require("../package.json");
+    sys.puts(json.name + ' ' + json.version);
+    process.exit(0);
 }
-var convert_path = function(name) {
-    return name;
+
+if (ARGS.ast_help) {
+    var desc = UglifyJS.describe_ast();
+    sys.puts(typeof desc == "string" ? desc : JSON.stringify(desc, null, 2));
+    process.exit(0);
+}
+
+if (ARGS.h || ARGS.help) {
+    sys.puts(yargs.help());
+    process.exit(0);
+}
+
+if (ARGS.acorn) {
+    acorn = require("acorn");
+}
+
+var COMPRESS = getOptions("c", true);
+var MANGLE = getOptions("m", true);
+var BEAUTIFY = getOptions("b", true);
+
+if (ARGS.d) {
+    if (COMPRESS) COMPRESS.global_defs = getOptions("d");
+}
+
+if (ARGS.r) {
+    if (MANGLE) MANGLE.except = ARGS.r.replace(/^\s+|\s+$/g).split(/\s*,+\s*/);
+}
+
+if (ARGS.quotes === true) {
+    ARGS.quotes = 3;
+}
+
+var OUTPUT_OPTIONS = {
+    beautify    : BEAUTIFY ? true : false,
+    preamble    : ARGS.preamble || null,
+    quote_style : ARGS.quotes != null ? ARGS.quotes : 0
 };
-if (typeof program.sourceMap == "object" && "base" in program.sourceMap) {
-    convert_path = function() {
-        var base = program.sourceMap.base;
-        delete options.sourceMap.base;
-        return function(name) {
-            return path.relative(base, name);
-        };
-    }();
-}
-if (program.verbose) {
-    options.warnings = "verbose";
-} else if (program.warn) {
-    options.warnings = true;
-}
-if (program.self) {
-    if (program.args.length) {
-        print_error("WARN: Ignoring input files since --self was passed");
-    }
-    if (!options.wrap) options.wrap = "UglifyJS";
-    simple_glob(UglifyJS.FILES).forEach(function(name) {
-        files[convert_path(name)] = read_file(name);
-    });
-    run();
-} else if (program.args.length) {
-    simple_glob(program.args).forEach(function(name) {
-        files[convert_path(name)] = read_file(name);
-    });
-    run();
-} else {
-    var chunks = [];
-    process.stdin.setEncoding("utf8");
-    process.stdin.on("data", function(chunk) {
-        chunks.push(chunk);
-    }).on("end", function() {
-        files = [ chunks.join("") ];
-        run();
-    });
-    process.stdin.resume();
+
+if (ARGS.screw_ie8) {
+    if (COMPRESS) COMPRESS.screw_ie8 = true;
+    if (MANGLE) MANGLE.screw_ie8 = true;
+    OUTPUT_OPTIONS.screw_ie8 = true;
 }
 
-function convert_ast(fn) {
-    return UglifyJS.AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
+if (ARGS.keep_fnames) {
+    if (COMPRESS) COMPRESS.keep_fnames = true;
+    if (MANGLE) MANGLE.keep_fnames = true;
 }
 
-function run() {
-    UglifyJS.AST_Node.warn_function = function(msg) {
-        print_error("WARN: " + msg);
-    };
-    if (program.timings) options.timings = true;
-    try {
-        if (program.parse) {
-            if (program.parse.acorn) {
-                files = convert_ast(function(toplevel, name) {
-                    return require("acorn").parse(files[name], {
-                        locations: true,
-                        program: toplevel,
-                        sourceFile: name
-                    });
-                });
-            } else if (program.parse.spidermonkey) {
-                files = convert_ast(function(toplevel, name) {
-                    var obj = JSON.parse(files[name]);
-                    if (!toplevel) return obj;
-                    toplevel.body = toplevel.body.concat(obj.body);
-                    return toplevel;
-                });
-            }
-        }
-    } catch (ex) {
-        fatal(ex);
-    }
-    var result = UglifyJS.minify(files, options);
-    if (result.error) {
-        var ex = result.error;
-        if (ex.name == "SyntaxError") {
-            print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
-            var col = ex.col;
-            var lines = files[ex.filename].split(/\r?\n/);
-            var line = lines[ex.line - 1];
-            if (!line && !col) {
-                line = lines[ex.line - 2];
-                col = line.length;
-            }
-            if (line) {
-                var limit = 70;
-                if (col > limit) {
-                    line = line.slice(col - limit);
-                    col = limit;
-                }
-                print_error(line.slice(0, 80));
-                print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
-            }
-        }
-        if (ex.defs) {
-            print_error("Supported options:");
-            print_error(format_object(ex.defs));
-        }
-        fatal(ex);
-    } else if (program.output == "ast") {
-        print(JSON.stringify(result.ast, function(key, value) {
-            if (skip_key(key)) return;
-            if (value instanceof UglifyJS.AST_Token) return;
-            if (value instanceof UglifyJS.Dictionary) return;
-            if (value instanceof UglifyJS.AST_Node) {
-                var result = {
-                    _class: "AST_" + value.TYPE
-                };
-                value.CTOR.PROPS.forEach(function(prop) {
-                    result[prop] = value[prop];
-                });
-                return result;
-            }
-            return value;
-        }, 2));
-    } else if (program.output == "spidermonkey") {
-        print(JSON.stringify(UglifyJS.minify(result.code, {
-            compress: false,
-            mangle: false,
-            output: {
-                ast: true,
-                code: false
-            }
-        }).ast.to_mozilla_ast(), null, 2));
-    } else if (program.output) {
-        fs.writeFileSync(program.output, result.code);
-        if (result.map) {
-            fs.writeFileSync(program.output + ".map", result.map);
+if (BEAUTIFY)
+    UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY);
+
+if (ARGS.comments) {
+    if (/^\/.*\/[a-zA-Z]*$/.test(ARGS.comments)) {
+        var regex_pos = ARGS.comments.lastIndexOf("/");
+        try {
+            OUTPUT_OPTIONS.comments = new RegExp(ARGS.comments.substr(1, regex_pos - 1), ARGS.comments.substr(regex_pos + 1));
+        } catch (e) {
+            sys.error("ERROR: Invalid --comments: " + e.message);
         }
+    } else if (ARGS.comments == "all") {
+        OUTPUT_OPTIONS.comments = true;
     } else {
-        print(result.code);
-    }
-    if (program.nameCache) {
-        fs.writeFileSync(program.nameCache, JSON.stringify(options.nameCache));
-    }
-    if (result.timings) for (var phase in result.timings) {
-        print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
+        OUTPUT_OPTIONS.comments = function(node, comment) {
+            var text = comment.value;
+            var type = comment.type;
+            if (type == "comment2") {
+                // multiline comment
+                return /@preserve|@license|@cc_on/i.test(text);
+            }
+        }
     }
 }
 
-function fatal(message) {
-    if (message instanceof Error) message = message.stack.replace(/^\S*?Error:/, "ERROR:")
-    print_error(message);
+var files = ARGS._.slice();
+
+if (ARGS.self) {
+    if (files.length > 0) {
+        sys.error("WARN: Ignoring input files since --self was passed");
+    }
+    files = UglifyJS.FILES;
+    if (!ARGS.wrap) ARGS.wrap = "UglifyJS";
+    ARGS.export_all = true;
+}
+
+var ORIG_MAP = ARGS.in_source_map;
+
+if (ORIG_MAP) {
+    ORIG_MAP = JSON.parse(fs.readFileSync(ORIG_MAP));
+    if (files.length == 0) {
+        sys.error("INFO: Using file from the input source map: " + ORIG_MAP.file);
+        files = [ ORIG_MAP.file ];
+    }
+    if (ARGS.source_map_root == null) {
+        ARGS.source_map_root = ORIG_MAP.sourceRoot;
+    }
+}
+
+if (files.length == 0) {
+    files = [ "-" ];
+}
+
+if (files.indexOf("-") >= 0 && ARGS.source_map) {
+    sys.error("ERROR: Source map doesn't work with input from STDIN");
     process.exit(1);
 }
 
-// A file glob function that only supports "*" and "?" wildcards in the basename.
-// Example: "foo/bar/*baz??.*.js"
-// Argument `glob` may be a string or an array of strings.
-// Returns an array of strings. Garbage in, garbage out.
-function simple_glob(glob) {
-    if (Array.isArray(glob)) {
-        return [].concat.apply([], glob.map(simple_glob));
+if (files.filter(function(el){ return el == "-" }).length > 1) {
+    sys.error("ERROR: Can read a single file from STDIN (two or more dashes specified)");
+    process.exit(1);
+}
+
+var STATS = {};
+var OUTPUT_FILE = ARGS.o;
+var TOPLEVEL = null;
+var P_RELATIVE = ARGS.p && ARGS.p == "relative";
+var SOURCES_CONTENT = {};
+
+var SOURCE_MAP = ARGS.source_map ? UglifyJS.SourceMap({
+    file: P_RELATIVE ? path.relative(path.dirname(ARGS.source_map), OUTPUT_FILE) : OUTPUT_FILE,
+    root: ARGS.source_map_root,
+    orig: ORIG_MAP,
+}) : null;
+
+OUTPUT_OPTIONS.source_map = SOURCE_MAP;
+
+try {
+    var output = UglifyJS.OutputStream(OUTPUT_OPTIONS);
+    var compressor = COMPRESS && UglifyJS.Compressor(COMPRESS);
+} catch(ex) {
+    if (ex instanceof UglifyJS.DefaultsError) {
+        sys.error(ex.msg);
+        sys.error("Supported options:");
+        sys.error(sys.inspect(ex.defs));
+        process.exit(1);
     }
-    if (glob.match(/\*|\?/)) {
-        var dir = path.dirname(glob);
-        try {
-            var entries = fs.readdirSync(dir);
-        } catch (ex) {}
-        if (entries) {
-            var pattern = "^" + path.basename(glob)
-                .replace(/[.+^$[\]\\(){}]/g, "\\$&")
-                .replace(/\*/g, "[^/\\\\]*")
-                .replace(/\?/g, "[^/\\\\]") + "$";
-            var mod = process.platform === "win32" ? "i" : "";
-            var rx = new RegExp(pattern, mod);
-            var results = entries.filter(function(name) {
-                return rx.test(name);
-            }).map(function(name) {
-                return path.join(dir, name);
-            });
-            if (results.length) return results;
+}
+
+async.eachLimit(files, 1, function (file, cb) {
+    read_whole_file(file, function (err, code) {
+        if (err) {
+            sys.error("ERROR: can't read file: " + file);
+            process.exit(1);
         }
-    }
-    return [ glob ];
-}
-
-function read_file(path, default_value) {
-    try {
-        return fs.readFileSync(path, "utf8");
-    } catch (ex) {
-        if (ex.code == "ENOENT" && default_value != null) return default_value;
-        fatal(ex);
-    }
-}
-
-function parse_js(flag) {
-    return function(value, options) {
-        options = options || {};
-        try {
-            UglifyJS.minify(value, {
-                parse: {
-                    expression: true
-                },
-                compress: false,
-                mangle: false,
-                output: {
-                    ast: true,
-                    code: false
-                }
-            }).ast.walk(new UglifyJS.TreeWalker(function(node) {
-                if (node instanceof UglifyJS.AST_Assign) {
-                    var name = node.left.print_to_string();
-                    var value = node.right;
-                    if (flag) {
-                        options[name] = value;
-                    } else if (value instanceof UglifyJS.AST_Array) {
-                        options[name] = value.elements.map(to_string);
-                    } else {
-                        options[name] = to_string(value);
-                    }
-                    return true;
-                }
-                if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_PropAccess) {
-                    var name = node.print_to_string();
-                    options[name] = true;
-                    return true;
-                }
-                if (!(node instanceof UglifyJS.AST_Sequence)) throw node;
-
-                function to_string(value) {
-                    return value instanceof UglifyJS.AST_Constant ? value.getValue() : value.print_to_string({
-                        quote_keys: true
-                    });
-                }
-            }));
-        } catch(ex) {
-            if (flag) {
-                fatal("Error parsing arguments for '" + flag + "': " + value);
+        if (ARGS.p != null) {
+            if (P_RELATIVE) {
+                file = path.relative(path.dirname(ARGS.source_map), file).replace(/\\/g, '/');
             } else {
-                options[value] = null;
+                var p = parseInt(ARGS.p, 10);
+                if (!isNaN(p)) {
+                    file = file.replace(/^\/+/, "").split(/\/+/).slice(ARGS.p).join("/");
+                }
             }
         }
-        return options;
-    }
-}
-
-function parse_source_map() {
-    var parse = parse_js();
-    return function(value, options) {
-        var hasContent = options && "content" in options;
-        var settings = parse(value, options);
-        if (!hasContent && settings.content && settings.content != "inline") {
-            print_error("INFO: Using input source map: " + settings.content);
-            settings.content = read_file(settings.content, settings.content);
-        }
-        return settings;
-    }
-}
-
-function skip_key(key) {
-    return skip_keys.indexOf(key) >= 0;
-}
-
-function format_object(obj) {
-    var lines = [];
-    var padding = "";
-    Object.keys(obj).map(function(name) {
-        if (padding.length < name.length) padding = Array(name.length + 1).join(" ");
-        return [ name, JSON.stringify(obj[name]) ];
-    }).forEach(function(tokens) {
-        lines.push("  " + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]);
+        SOURCES_CONTENT[file] = code;
+        time_it("parse", function(){
+            if (ARGS.spidermonkey) {
+                var program = JSON.parse(code);
+                if (!TOPLEVEL) TOPLEVEL = program;
+                else TOPLEVEL.body = TOPLEVEL.body.concat(program.body);
+            }
+            else if (ARGS.acorn) {
+                TOPLEVEL = acorn.parse(code, {
+                    locations     : true,
+                    sourceFile    : file,
+                    program       : TOPLEVEL
+                });
+            }
+            else {
+                try {
+                    TOPLEVEL = UglifyJS.parse(code, {
+                        filename     : file,
+                        toplevel     : TOPLEVEL,
+                        expression   : ARGS.expr,
+                        bare_returns : ARGS.bare_returns,
+                    });
+                } catch(ex) {
+                    if (ex instanceof UglifyJS.JS_Parse_Error) {
+                        sys.error("Parse error at " + file + ":" + ex.line + "," + ex.col);
+                        sys.error(ex.message);
+                        sys.error(ex.stack);
+                        process.exit(1);
+                    }
+                    throw ex;
+                }
+            };
+        });
+        cb();
     });
-    return lines.join("\n");
+}, function () {
+    if (ARGS.acorn || ARGS.spidermonkey) time_it("convert_ast", function(){
+        TOPLEVEL = UglifyJS.AST_Node.from_mozilla_ast(TOPLEVEL);
+    });
+
+    if (ARGS.wrap) {
+        TOPLEVEL = TOPLEVEL.wrap_commonjs(ARGS.wrap, ARGS.export_all);
+    }
+
+    if (ARGS.enclose) {
+        var arg_parameter_list = ARGS.enclose;
+        if (arg_parameter_list === true) {
+            arg_parameter_list = [];
+        }
+        else if (!(arg_parameter_list instanceof Array)) {
+            arg_parameter_list = [arg_parameter_list];
+        }
+        TOPLEVEL = TOPLEVEL.wrap_enclose(arg_parameter_list);
+    }
+
+    var SCOPE_IS_NEEDED = COMPRESS || MANGLE || ARGS.lint;
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope({ screw_ie8: ARGS.screw_ie8 });
+            if (ARGS.lint) {
+                TOPLEVEL.scope_warnings();
+            }
+        });
+    }
+
+    if (COMPRESS) {
+        time_it("squeeze", function(){
+            TOPLEVEL = TOPLEVEL.transform(compressor);
+        });
+    }
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope({ screw_ie8: ARGS.screw_ie8 });
+            if (MANGLE) {
+                TOPLEVEL.compute_char_frequency(MANGLE);
+            }
+        });
+    }
+
+    if (MANGLE) time_it("mangle", function(){
+        TOPLEVEL.mangle_names(MANGLE);
+    });
+
+    if (ARGS.source_map_include_sources) {
+        for (var file in SOURCES_CONTENT) {
+            if (SOURCES_CONTENT.hasOwnProperty(file)) {
+                SOURCE_MAP.get().setSourceContent(file, SOURCES_CONTENT[file]);
+            }
+        }
+    }
+
+    time_it("generate", function(){
+        TOPLEVEL.print(output);
+    });
+
+    output = output.get();
+
+    if (SOURCE_MAP) {
+        fs.writeFileSync(ARGS.source_map, SOURCE_MAP, "utf8");
+        var source_map_url = ARGS.source_map_url || (
+            P_RELATIVE
+                ? path.relative(path.dirname(OUTPUT_FILE), ARGS.source_map)
+                : ARGS.source_map
+        );
+        output += "\n//# sourceMappingURL=" + source_map_url;
+    }
+
+    if (OUTPUT_FILE) {
+        fs.writeFileSync(OUTPUT_FILE, output, "utf8");
+    } else {
+        sys.print(output);
+    }
+
+    if (ARGS.stats) {
+        sys.error(UglifyJS.string_template("Timing information (compressed {count} files):", {
+            count: files.length
+        }));
+        for (var i in STATS) if (STATS.hasOwnProperty(i)) {
+            sys.error(UglifyJS.string_template("- {name}: {time}s", {
+                name: i,
+                time: (STATS[i] / 1000).toFixed(3)
+            }));
+        }
+    }
+});
+
+/* -----[ functions ]----- */
+
+function normalize(o) {
+    for (var i in o) if (o.hasOwnProperty(i) && /-/.test(i)) {
+        o[i.replace(/-/g, "_")] = o[i];
+        delete o[i];
+    }
 }
 
-function print_error(msg) {
-    process.stderr.write(msg);
-    process.stderr.write("\n");
+function getOptions(x, constants) {
+    x = ARGS[x];
+    if (!x) return null;
+    var ret = {};
+    if (x !== true) {
+        var ast;
+        try {
+            ast = UglifyJS.parse(x, { expression: true });
+        } catch(ex) {
+            if (ex instanceof UglifyJS.JS_Parse_Error) {
+                sys.error("Error parsing arguments in: " + x);
+                process.exit(1);
+            }
+        }
+        ast.walk(new UglifyJS.TreeWalker(function(node){
+            if (node instanceof UglifyJS.AST_Seq) return; // descend
+            if (node instanceof UglifyJS.AST_Assign) {
+                var name = node.left.print_to_string({ beautify: false }).replace(/-/g, "_");
+                var value = node.right;
+                if (constants)
+                    value = new Function("return (" + value.print_to_string() + ")")();
+                ret[name] = value;
+                return true;    // no descend
+            }
+            if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_Binary) {
+                var name = node.print_to_string({ beautify: false }).replace(/-/g, "_");
+                ret[name] = true;
+                return true;    // no descend
+            }
+            sys.error(node.TYPE)
+            sys.error("Error parsing arguments in: " + x);
+            process.exit(1);
+        }));
+    }
+    return ret;
 }
 
-function print(txt) {
-    process.stdout.write(txt);
-    process.stdout.write("\n");
+function read_whole_file(filename, cb) {
+    if (filename == "-") {
+        var chunks = [];
+        process.stdin.setEncoding('utf-8');
+        process.stdin.on('data', function (chunk) {
+            chunks.push(chunk);
+        }).on('end', function () {
+            cb(null, chunks.join(""));
+        });
+        process.openStdin();
+    } else {
+        fs.readFile(filename, "utf-8", cb);
+    }
+}
+
+function time_it(name, cont) {
+    var t1 = new Date().getTime();
+    var ret = cont();
+    if (ARGS.stats) {
+        var spent = new Date().getTime() - t1;
+        if (STATS[name]) STATS[name] += spent;
+        else STATS[name] = spent;
+    }
+    return ret;
 }

lib/ast.js

@@ -71,7 +71,7 @@ function DEFNODE(type, props, methods, base) {
     if (type) {
         ctor.prototype.TYPE = ctor.TYPE = type;
     }
-    if (methods) for (i in methods) if (HOP(methods, i)) {
+    if (methods) for (i in methods) if (methods.hasOwnProperty(i)) {
         if (/^\$/.test(i)) {
             ctor[i.substr(1)] = methods[i];
         } else {
@@ -81,30 +81,16 @@ function DEFNODE(type, props, methods, base) {
     ctor.DEFMETHOD = function(name, method) {
         this.prototype[name] = method;
     };
-    if (typeof exports !== "undefined") {
-        exports["AST_" + type] = ctor;
-    }
     return ctor;
 };
 
-var AST_Token = DEFNODE("Token", "type value line col pos endline endcol endpos nlb comments_before file raw", {
+var AST_Token = DEFNODE("Token", "type value line col pos endline endcol endpos nlb comments_before file", {
 }, null);
 
 var AST_Node = DEFNODE("Node", "start end", {
-    _clone: function(deep) {
-        if (deep) {
-            var self = this.clone();
-            return self.transform(new TreeTransformer(function(node) {
-                if (node !== self) {
-                    return node.clone(true);
-                }
-            }));
-        }
+    clone: function() {
         return new this.CTOR(this);
     },
-    clone: function(deep) {
-        return this._clone(deep);
-    },
     $documentation: "Base class of all AST nodes",
     $propdoc: {
         start: "[AST_Token] The first token of this node",
@@ -156,13 +142,12 @@ var AST_SimpleStatement = DEFNODE("SimpleStatement", "body", {
 }, AST_Statement);
 
 function walk_body(node, visitor) {
-    var body = node.body;
-    if (body instanceof AST_Statement) {
-        body._walk(visitor);
-    }
-    else for (var i = 0, len = body.length; i < len; i++) {
-        body[i]._walk(visitor);
+    if (node.body instanceof AST_Statement) {
+        node.body._walk(visitor);
     }
+    else node.body.forEach(function(stat){
+        stat._walk(visitor);
+    });
 };
 
 var AST_Block = DEFNODE("Block", "body", {
@@ -182,13 +167,21 @@ var AST_BlockStatement = DEFNODE("BlockStatement", null, {
 }, AST_Block);
 
 var AST_EmptyStatement = DEFNODE("EmptyStatement", null, {
-    $documentation: "The empty statement (empty block or simply a semicolon)"
+    $documentation: "The empty statement (empty block or simply a semicolon)",
+    _walk: function(visitor) {
+        return visitor._visit(this);
+    }
 }, AST_Statement);
 
 var AST_StatementWithBody = DEFNODE("StatementWithBody", "body", {
     $documentation: "Base class for all statements that contain one nested body: `For`, `ForIn`, `Do`, `While`, `With`",
     $propdoc: {
         body: "[AST_Statement] the body; this should always be present, even if it's an AST_EmptyStatement"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.body._walk(visitor);
+        });
     }
 }, AST_Statement);
 
@@ -202,21 +195,6 @@ var AST_LabeledStatement = DEFNODE("LabeledStatement", "label", {
             this.label._walk(visitor);
             this.body._walk(visitor);
         });
-    },
-    clone: function(deep) {
-        var node = this._clone(deep);
-        if (deep) {
-            var label = node.label;
-            var def = this.label;
-            node.walk(new TreeWalker(function(node) {
-                if (node instanceof AST_LoopControl
-                    && node.label && node.label.thedef === def) {
-                    node.label.thedef = label;
-                    label.references.push(node);
-                }
-            }));
-        }
-        return node;
     }
 }, AST_StatementWithBody);
 
@@ -318,13 +296,63 @@ var AST_Toplevel = DEFNODE("Toplevel", "globals", {
     $propdoc: {
         globals: "[Object/S] a map of name -> SymbolDef for all undeclared names",
     },
-    wrap_commonjs: function(name) {
-        var body = this.body;
-        var wrapped_tl = "(function(exports){'$ORIG';})(typeof " + name + "=='undefined'?(" + name + "={}):" + name + ");";
+    wrap_enclose: function(arg_parameter_pairs) {
+        var self = this;
+        var args = [];
+        var parameters = [];
+
+        arg_parameter_pairs.forEach(function(pair) {
+            var splitAt = pair.lastIndexOf(":");
+
+            args.push(pair.substr(0, splitAt));
+            parameters.push(pair.substr(splitAt + 1));
+        });
+
+        var wrapped_tl = "(function(" + parameters.join(",") + "){ '$ORIG'; })(" + args.join(",") + ")";
         wrapped_tl = parse(wrapped_tl);
         wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
             if (node instanceof AST_Directive && node.value == "$ORIG") {
-                return MAP.splice(body);
+                return MAP.splice(self.body);
+            }
+        }));
+        return wrapped_tl;
+    },
+    wrap_commonjs: function(name, export_all) {
+        var self = this;
+        var to_export = [];
+        if (export_all) {
+            self.figure_out_scope();
+            self.walk(new TreeWalker(function(node){
+                if (node instanceof AST_SymbolDeclaration && node.definition().global) {
+                    if (!find_if(function(n){ return n.name == node.name }, to_export))
+                        to_export.push(node);
+                }
+            }));
+        }
+        var wrapped_tl = "(function(exports, global){ global['" + name + "'] = exports; '$ORIG'; '$EXPORTS'; }({}, (function(){return this}())))";
+        wrapped_tl = parse(wrapped_tl);
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
+            if (node instanceof AST_SimpleStatement) {
+                node = node.body;
+                if (node instanceof AST_String) switch (node.getValue()) {
+                  case "$ORIG":
+                    return MAP.splice(self.body);
+                  case "$EXPORTS":
+                    var body = [];
+                    to_export.forEach(function(sym){
+                        body.push(new AST_SimpleStatement({
+                            body: new AST_Assign({
+                                left: new AST_Sub({
+                                    expression: new AST_SymbolRef({ name: "exports" }),
+                                    property: new AST_String({ value: sym.name }),
+                                }),
+                                operator: "=",
+                                right: new AST_SymbolRef(sym),
+                            }),
+                        }));
+                    });
+                    return MAP.splice(body);
+                }
             }
         }));
         return wrapped_tl;
@@ -341,10 +369,9 @@ var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments", {
     _walk: function(visitor) {
         return visitor._visit(this, function(){
             if (this.name) this.name._walk(visitor);
-            var argnames = this.argnames;
-            for (var i = 0, len = argnames.length; i < len; i++) {
-                argnames[i]._walk(visitor);
-            }
+            this.argnames.forEach(function(arg){
+                arg._walk(visitor);
+            });
             walk_body(this, visitor);
         });
     }
@@ -495,19 +522,18 @@ var AST_Finally = DEFNODE("Finally", null, {
     $documentation: "A `finally` node; only makes sense as part of a `try` statement"
 }, AST_Block);
 
-/* -----[ VAR ]----- */
+/* -----[ VAR/CONST ]----- */
 
 var AST_Definitions = DEFNODE("Definitions", "definitions", {
-    $documentation: "Base class for `var` nodes (variable declarations/initializations)",
+    $documentation: "Base class for `var` or `const` nodes (variable declarations/initializations)",
     $propdoc: {
         definitions: "[AST_VarDef*] array of variable definitions"
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            var definitions = this.definitions;
-            for (var i = 0, len = definitions.length; i < len; i++) {
-                definitions[i]._walk(visitor);
-            }
+            this.definitions.forEach(function(def){
+                def._walk(visitor);
+            });
         });
     }
 }, AST_Statement);
@@ -516,10 +542,14 @@ var AST_Var = DEFNODE("Var", null, {
     $documentation: "A `var` statement"
 }, AST_Definitions);
 
+var AST_Const = DEFNODE("Const", null, {
+    $documentation: "A `const` statement"
+}, AST_Definitions);
+
 var AST_VarDef = DEFNODE("VarDef", "name value", {
     $documentation: "A variable declaration; only appears in a AST_Definitions node",
     $propdoc: {
-        name: "[AST_SymbolVar] name of the variable",
+        name: "[AST_SymbolVar|AST_SymbolConst] name of the variable",
         value: "[AST_Node?] initializer, or null of there's no initializer"
     },
     _walk: function(visitor) {
@@ -540,11 +570,10 @@ var AST_Call = DEFNODE("Call", "expression args", {
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            var args = this.args;
-            for (var i = 0, len = args.length; i < len; i++) {
-                args[i]._walk(visitor);
-            }
             this.expression._walk(visitor);
+            this.args.forEach(function(arg){
+                arg._walk(visitor);
+            });
         });
     }
 });
@@ -553,16 +582,61 @@ var AST_New = DEFNODE("New", null, {
     $documentation: "An object instantiation.  Derives from a function call since it has exactly the same properties"
 }, AST_Call);
 
-var AST_Sequence = DEFNODE("Sequence", "expressions", {
-    $documentation: "A sequence expression (comma-separated expressions)",
+var AST_Seq = DEFNODE("Seq", "car cdr", {
+    $documentation: "A sequence expression (two comma-separated expressions)",
     $propdoc: {
-        expressions: "[AST_Node*] array of expressions (at least two)"
+        car: "[AST_Node] first element in sequence",
+        cdr: "[AST_Node] second element in sequence"
+    },
+    $cons: function(x, y) {
+        var seq = new AST_Seq(x);
+        seq.car = x;
+        seq.cdr = y;
+        return seq;
+    },
+    $from_array: function(array) {
+        if (array.length == 0) return null;
+        if (array.length == 1) return array[0].clone();
+        var list = null;
+        for (var i = array.length; --i >= 0;) {
+            list = AST_Seq.cons(array[i], list);
+        }
+        var p = list;
+        while (p) {
+            if (p.cdr && !p.cdr.cdr) {
+                p.cdr = p.cdr.car;
+                break;
+            }
+            p = p.cdr;
+        }
+        return list;
+    },
+    to_array: function() {
+        var p = this, a = [];
+        while (p) {
+            a.push(p.car);
+            if (p.cdr && !(p.cdr instanceof AST_Seq)) {
+                a.push(p.cdr);
+                break;
+            }
+            p = p.cdr;
+        }
+        return a;
+    },
+    add: function(node) {
+        var p = this;
+        while (p) {
+            if (!(p.cdr instanceof AST_Seq)) {
+                var cell = AST_Seq.cons(p.cdr, node);
+                return p.cdr = cell;
+            }
+            p = p.cdr;
+        }
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            this.expressions.forEach(function(node) {
-                node._walk(visitor);
-            });
+            this.car._walk(visitor);
+            if (this.cdr) this.cdr._walk(visitor);
         });
     }
 });
@@ -615,7 +689,7 @@ var AST_UnaryPostfix = DEFNODE("UnaryPostfix", null, {
     $documentation: "Unary postfix expression, i.e. `i++`"
 }, AST_Unary);
 
-var AST_Binary = DEFNODE("Binary", "operator left right", {
+var AST_Binary = DEFNODE("Binary", "left operator right", {
     $documentation: "Binary expression, i.e. `a + b`",
     $propdoc: {
         left: "[AST_Node] left-hand side expression",
@@ -659,10 +733,9 @@ var AST_Array = DEFNODE("Array", "elements", {
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            var elements = this.elements;
-            for (var i = 0, len = elements.length; i < len; i++) {
-                elements[i]._walk(visitor);
-            }
+            this.elements.forEach(function(el){
+                el._walk(visitor);
+            });
         });
     }
 });
@@ -674,10 +747,9 @@ var AST_Object = DEFNODE("Object", "properties", {
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            var properties = this.properties;
-            for (var i = 0, len = properties.length; i < len; i++) {
-                properties[i]._walk(visitor);
-            }
+            this.properties.forEach(function(prop){
+                prop._walk(visitor);
+            });
         });
     }
 });
@@ -685,8 +757,8 @@ var AST_Object = DEFNODE("Object", "properties", {
 var AST_ObjectProperty = DEFNODE("ObjectProperty", "key value", {
     $documentation: "Base class for literal object properties",
     $propdoc: {
-        key: "[string] the property name converted to a string for ObjectKeyVal.  For setters and getters this is an AST_SymbolAccessor.",
-        value: "[AST_Node] property value.  For setters and getters this is an AST_Accessor."
+        key: "[string] the property name converted to a string for ObjectKeyVal.  For setters and getters this is an arbitrary AST_Node.",
+        value: "[AST_Node] property value.  For setters and getters this is an AST_Function."
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
@@ -724,13 +796,20 @@ var AST_SymbolAccessor = DEFNODE("SymbolAccessor", null, {
 }, AST_Symbol);
 
 var AST_SymbolDeclaration = DEFNODE("SymbolDeclaration", "init", {
-    $documentation: "A declaration symbol (symbol in var, function name or argument, symbol in catch)",
+    $documentation: "A declaration symbol (symbol in var/const, function name or argument, symbol in catch)",
+    $propdoc: {
+        init: "[AST_Node*/S] array of initializers for this declaration."
+    }
 }, AST_Symbol);
 
 var AST_SymbolVar = DEFNODE("SymbolVar", null, {
     $documentation: "Symbol defining a variable",
 }, AST_SymbolDeclaration);
 
+var AST_SymbolConst = DEFNODE("SymbolConst", null, {
+    $documentation: "A constant declaration"
+}, AST_SymbolDeclaration);
+
 var AST_SymbolFunarg = DEFNODE("SymbolFunarg", null, {
     $documentation: "Symbol naming a function argument",
 }, AST_SymbolVar);
@@ -785,11 +864,10 @@ var AST_String = DEFNODE("String", "value quote", {
     }
 }, AST_Constant);
 
-var AST_Number = DEFNODE("Number", "value literal", {
+var AST_Number = DEFNODE("Number", "value", {
     $documentation: "A number literal",
     $propdoc: {
-        value: "[number] the numeric value",
-        literal: "[string] numeric value as string (optional)"
+        value: "[number] the numeric value"
     }
 }, AST_Constant);
 
@@ -848,35 +926,27 @@ var AST_True = DEFNODE("True", null, {
 function TreeWalker(callback) {
     this.visit = callback;
     this.stack = [];
-    this.directives = Object.create(null);
 };
 TreeWalker.prototype = {
     _visit: function(node, descend) {
-        this.push(node);
+        this.stack.push(node);
         var ret = this.visit(node, descend ? function(){
             descend.call(node);
         } : noop);
         if (!ret && descend) {
             descend.call(node);
         }
-        this.pop();
+        this.stack.pop();
         return ret;
     },
     parent: function(n) {
         return this.stack[this.stack.length - 2 - (n || 0)];
     },
-    push: function(node) {
-        if (node instanceof AST_Lambda) {
-            this.directives = Object.create(this.directives);
-        } else if (node instanceof AST_Directive && !this.directives[node.value]) {
-            this.directives[node.value] = node;
-        }
+    push: function (node) {
         this.stack.push(node);
     },
     pop: function() {
-        if (this.stack.pop() instanceof AST_Lambda) {
-            this.directives = Object.getPrototypeOf(this.directives);
-        }
+        return this.stack.pop();
     },
     self: function() {
         return this.stack[this.stack.length - 1];
@@ -889,16 +959,7 @@ TreeWalker.prototype = {
         }
     },
     has_directive: function(type) {
-        var dir = this.directives[type];
-        if (dir) return dir;
-        var node = this.stack[this.stack.length - 1];
-        if (node instanceof AST_Scope) {
-            for (var i = 0; i < node.body.length; ++i) {
-                var st = node.body[i];
-                if (!(st instanceof AST_Directive)) break;
-                if (st.value == type) return st;
-            }
-        }
+        return this.find_parent(AST_Scope).has_directive(type);
     },
     in_boolean_context: function() {
         var stack = this.stack;
@@ -918,16 +979,16 @@ TreeWalker.prototype = {
             self = p;
         }
     },
-    loopcontrol_target: function(node) {
+    loopcontrol_target: function(label) {
         var stack = this.stack;
-        if (node.label) for (var i = stack.length; --i >= 0;) {
+        if (label) for (var i = stack.length; --i >= 0;) {
             var x = stack[i];
-            if (x instanceof AST_LabeledStatement && x.label.name == node.label.name)
+            if (x instanceof AST_LabeledStatement && x.label.name == label.name) {
                 return x.body;
+            }
         } else for (var i = stack.length; --i >= 0;) {
             var x = stack[i];
-            if (x instanceof AST_IterationStatement
-                || node instanceof AST_Break && x instanceof AST_Switch)
+            if (x instanceof AST_Switch || x instanceof AST_IterationStatement)
                 return x;
         }
     }

lib/minify.js

@@ -1,220 +0,0 @@
-"use strict";
-
-var to_ascii = typeof atob == "undefined" ? function(b64) {
-    return new Buffer(b64, "base64").toString();
-} : atob;
-var to_base64 = typeof btoa == "undefined" ? function(str) {
-    return new Buffer(str).toString("base64");
-} : btoa;
-
-function read_source_map(code) {
-    var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
-    if (!match) {
-        AST_Node.warn("inline source map not found");
-        return null;
-    }
-    return to_ascii(match[2]);
-}
-
-function set_shorthand(name, options, keys) {
-    if (options[name]) {
-        keys.forEach(function(key) {
-            if (options[key]) {
-                if (typeof options[key] != "object") options[key] = {};
-                if (!(name in options[key])) options[key][name] = options[name];
-            }
-        });
-    }
-}
-
-function init_cache(cache) {
-    if (!cache) return;
-    if (!("cname" in cache)) cache.cname = -1;
-    if (!("props" in cache)) {
-        cache.props = new Dictionary();
-    } else if (!(cache.props instanceof Dictionary)) {
-        cache.props = Dictionary.fromObject(cache.props);
-    }
-}
-
-function to_json(cache) {
-    return {
-        cname: cache.cname,
-        props: cache.props.toObject()
-    };
-}
-
-function minify(files, options) {
-    var warn_function = AST_Node.warn_function;
-    try {
-        options = defaults(options, {
-            compress: {},
-            ie8: false,
-            keep_fnames: false,
-            mangle: {},
-            nameCache: null,
-            output: {},
-            parse: {},
-            sourceMap: false,
-            timings: false,
-            toplevel: false,
-            warnings: false,
-            wrap: false,
-        }, true);
-        var timings = options.timings && {
-            start: Date.now()
-        };
-        set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
-        set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
-        set_shorthand("toplevel", options, [ "compress", "mangle" ]);
-        set_shorthand("warnings", options, [ "compress" ]);
-        var quoted_props;
-        if (options.mangle) {
-            options.mangle = defaults(options.mangle, {
-                cache: options.nameCache && (options.nameCache.vars || {}),
-                eval: false,
-                ie8: false,
-                keep_fnames: false,
-                properties: false,
-                reserved: [],
-                toplevel: false,
-            }, true);
-            if (options.mangle.properties) {
-                if (typeof options.mangle.properties != "object") {
-                    options.mangle.properties = {};
-                }
-                if (options.mangle.properties.keep_quoted) {
-                    quoted_props = options.mangle.properties.reserved;
-                    if (!Array.isArray(quoted_props)) quoted_props = [];
-                    options.mangle.properties.reserved = quoted_props;
-                }
-                if (options.nameCache && !("cache" in options.mangle.properties)) {
-                    options.mangle.properties.cache = options.nameCache.props || {};
-                }
-            }
-            init_cache(options.mangle.cache);
-            init_cache(options.mangle.properties.cache);
-        }
-        if (options.sourceMap) {
-            options.sourceMap = defaults(options.sourceMap, {
-                content: null,
-                filename: null,
-                includeSources: false,
-                root: null,
-                url: null,
-            }, true);
-        }
-        var warnings = [];
-        if (options.warnings && !AST_Node.warn_function) {
-            AST_Node.warn_function = function(warning) {
-                warnings.push(warning);
-            };
-        }
-        if (timings) timings.parse = Date.now();
-        var toplevel;
-        if (files instanceof AST_Toplevel) {
-            toplevel = files;
-        } else {
-            if (typeof files == "string") {
-                files = [ files ];
-            }
-            options.parse = options.parse || {};
-            options.parse.toplevel = null;
-            for (var name in files) if (HOP(files, name)) {
-                options.parse.filename = name;
-                options.parse.toplevel = parse(files[name], options.parse);
-                if (options.sourceMap && options.sourceMap.content == "inline") {
-                    if (Object.keys(files).length > 1)
-                        throw new Error("inline source map only works with singular input");
-                    options.sourceMap.content = read_source_map(files[name]);
-                }
-            }
-            toplevel = options.parse.toplevel;
-        }
-        if (quoted_props) {
-            reserve_quoted_keys(toplevel, quoted_props);
-        }
-        if (options.wrap) {
-            toplevel = toplevel.wrap_commonjs(options.wrap);
-        }
-        if (timings) timings.scope1 = Date.now();
-        if (options.compress) toplevel.figure_out_scope(options.mangle);
-        if (timings) timings.compress = Date.now();
-        if (options.compress) toplevel = new Compressor(options.compress).compress(toplevel);
-        if (timings) timings.scope2 = Date.now();
-        if (options.mangle) toplevel.figure_out_scope(options.mangle);
-        if (timings) timings.mangle = Date.now();
-        if (options.mangle) {
-            base54.reset();
-            toplevel.compute_char_frequency(options.mangle);
-            toplevel.mangle_names(options.mangle);
-        }
-        if (timings) timings.properties = Date.now();
-        if (options.mangle && options.mangle.properties) {
-            toplevel = mangle_properties(toplevel, options.mangle.properties);
-        }
-        if (timings) timings.output = Date.now();
-        var result = {};
-        if (options.output.ast) {
-            result.ast = toplevel;
-        }
-        if (!HOP(options.output, "code") || options.output.code) {
-            if (options.sourceMap) {
-                if (typeof options.sourceMap.content == "string") {
-                    options.sourceMap.content = JSON.parse(options.sourceMap.content);
-                }
-                options.output.source_map = SourceMap({
-                    file: options.sourceMap.filename,
-                    orig: options.sourceMap.content,
-                    root: options.sourceMap.root
-                });
-                if (options.sourceMap.includeSources) {
-                    if (files instanceof AST_Toplevel) {
-                        throw new Error("original source content unavailable");
-                    } else for (var name in files) if (HOP(files, name)) {
-                        options.output.source_map.get().setSourceContent(name, files[name]);
-                    }
-                }
-            }
-            delete options.output.ast;
-            delete options.output.code;
-            var stream = OutputStream(options.output);
-            toplevel.print(stream);
-            result.code = stream.get();
-            if (options.sourceMap) {
-                result.map = options.output.source_map.toString();
-                if (options.sourceMap.url == "inline") {
-                    result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(result.map);
-                } else if (options.sourceMap.url) {
-                    result.code += "\n//# sourceMappingURL=" + options.sourceMap.url;
-                }
-            }
-        }
-        if (options.nameCache && options.mangle) {
-            if (options.mangle.cache) options.nameCache.vars = to_json(options.mangle.cache);
-            if (options.mangle.properties && options.mangle.properties.cache) {
-                options.nameCache.props = to_json(options.mangle.properties.cache);
-            }
-        }
-        if (timings) {
-            timings.end = Date.now();
-            result.timings = {
-                parse: 1e-3 * (timings.scope1 - timings.parse),
-                scope: 1e-3 * (timings.compress - timings.scope1 + timings.mangle - timings.scope2),
-                compress: 1e-3 * (timings.scope2 - timings.compress),
-                mangle: 1e-3 * (timings.properties - timings.mangle),
-                properties: 1e-3 * (timings.output - timings.properties),
-                output: 1e-3 * (timings.end - timings.output),
-                total: 1e-3 * (timings.end - timings.start)
-            }
-        }
-        if (warnings.length) {
-            result.warnings = warnings;
-        }
-        return result;
-    } catch (ex) {
-        return { error: ex };
-    } finally {
-        AST_Node.warn_function = warn_function;
-    }
-}

lib/mozilla-ast.js

@@ -45,55 +45,20 @@
 
 (function(){
 
-    var normalize_directives = function(body) {
-        var in_directive = true;
-
-        for (var i = 0; i < body.length; i++) {
-            if (in_directive && body[i] instanceof AST_Statement && body[i].body instanceof AST_String) {
-                body[i] = new AST_Directive({
-                    start: body[i].start,
-                    end: body[i].end,
-                    value: body[i].body.value
-                });
-            } else if (in_directive && !(body[i] instanceof AST_Statement && body[i].body instanceof AST_String)) {
-                in_directive = false;
-            }
-        }
-
-        return body;
-    };
-
     var MOZ_TO_ME = {
-        Program: function(M) {
-            return new AST_Toplevel({
-                start: my_start_token(M),
-                end: my_end_token(M),
-                body: normalize_directives(M.body.map(from_moz))
-            });
-        },
-        FunctionDeclaration: function(M) {
-            return new AST_Defun({
-                start: my_start_token(M),
-                end: my_end_token(M),
-                name: from_moz(M.id),
-                argnames: M.params.map(from_moz),
-                body: normalize_directives(from_moz(M.body).body)
-            });
-        },
-        FunctionExpression: function(M) {
-            return new AST_Function({
-                start: my_start_token(M),
-                end: my_end_token(M),
-                name: from_moz(M.id),
-                argnames: M.params.map(from_moz),
-                body: normalize_directives(from_moz(M.body).body)
-            });
-        },
         ExpressionStatement: function(M) {
+            var expr = M.expression;
+            if (expr.type === "Literal" && typeof expr.value === "string") {
+                return new AST_Directive({
+                    start: my_start_token(M),
+                    end: my_end_token(M),
+                    value: expr.value
+                });
+            }
             return new AST_SimpleStatement({
                 start: my_start_token(M),
                 end: my_end_token(M),
-                body: from_moz(M.expression)
+                body: from_moz(expr)
             });
         },
         TryStatement: function(M) {
@@ -111,28 +76,23 @@
         },
         Property: function(M) {
             var key = M.key;
+            var name = key.type == "Identifier" ? key.name : key.value;
             var args = {
                 start    : my_start_token(key),
                 end      : my_end_token(M.value),
-                key      : key.type == "Identifier" ? key.name : key.value,
+                key      : name,
                 value    : from_moz(M.value)
             };
-            if (M.kind == "init") return new AST_ObjectKeyVal(args);
-            args.key = new AST_SymbolAccessor({
-                name: args.key
-            });
-            args.value = new AST_Accessor(args.value);
-            if (M.kind == "get") return new AST_ObjectGetter(args);
-            if (M.kind == "set") return new AST_ObjectSetter(args);
-        },
-        ArrayExpression: function(M) {
-            return new AST_Array({
-                start    : my_start_token(M),
-                end      : my_end_token(M),
-                elements : M.elements.map(function(elem){
-                    return elem === null ? new AST_Hole() : from_moz(elem);
-                })
-            });
+            switch (M.kind) {
+              case "init":
+                return new AST_ObjectKeyVal(args);
+              case "set":
+                args.value.name = from_moz(key);
+                return new AST_ObjectSetter(args);
+              case "get":
+                args.value.name = from_moz(key);
+                return new AST_ObjectGetter(args);
+            }
         },
         ObjectExpression: function(M) {
             return new AST_Object({
@@ -145,11 +105,7 @@
             });
         },
         SequenceExpression: function(M) {
-            return new AST_Sequence({
-                start      : my_start_token(M),
-                end        : my_end_token(M),
-                expressions: M.expressions.map(from_moz)
-            });
+            return AST_Seq.from_array(M.expressions.map(from_moz));
         },
         MemberExpression: function(M) {
             return new (M.computed ? AST_Sub : AST_Dot)({
@@ -168,7 +124,7 @@
             });
         },
         VariableDeclaration: function(M) {
-            return new AST_Var({
+            return new (M.kind === "const" ? AST_Const : AST_Var)({
                 start       : my_start_token(M),
                 end         : my_end_token(M),
                 definitions : M.declarations.map(from_moz)
@@ -190,21 +146,14 @@
               case "boolean":
                 return new (val ? AST_True : AST_False)(args);
               default:
-                var rx = M.regex;
-                if (rx && rx.pattern) {
-                    // RegExpLiteral as per ESTree AST spec
-                    args.value = new RegExp(rx.pattern, rx.flags).toString();
-                } else {
-                    // support legacy RegExp
-                    args.value = M.regex && M.raw ? M.raw : val;
-                }
+                args.value = val;
                 return new AST_RegExp(args);
             }
         },
         Identifier: function(M) {
             var p = FROM_MOZ_STACK[FROM_MOZ_STACK.length - 2];
             return new (  p.type == "LabeledStatement" ? AST_Label
-                        : p.type == "VariableDeclarator" && p.id === M ? AST_SymbolVar
+                        : p.type == "VariableDeclarator" && p.id === M ? (p.kind == "const" ? AST_SymbolConst : AST_SymbolVar)
                         : p.type == "FunctionExpression" ? (p.id === M ? AST_SymbolLambda : AST_SymbolFunarg)
                         : p.type == "FunctionDeclaration" ? (p.id === M ? AST_SymbolDefun : AST_SymbolFunarg)
                         : p.type == "CatchClause" ? AST_SymbolCatch
@@ -229,6 +178,7 @@
         });
     };
 
+    map("Program", AST_Toplevel, "body@body");
     map("EmptyStatement", AST_EmptyStatement);
     map("BlockStatement", AST_BlockStatement, "body@body");
     map("IfStatement", AST_If, "test>condition, consequent>body, alternate>alternative");
@@ -244,10 +194,13 @@
     map("ForStatement", AST_For, "init>init, test>condition, update>step, body>body");
     map("ForInStatement", AST_ForIn, "left>init, right>object, body>body");
     map("DebuggerStatement", AST_Debugger);
+    map("FunctionDeclaration", AST_Defun, "id>name, params@argnames, body%body");
     map("VariableDeclarator", AST_VarDef, "id>name, init>value");
     map("CatchClause", AST_Catch, "param>argname, body%body");
 
     map("ThisExpression", AST_This);
+    map("ArrayExpression", AST_Array, "elements@elements");
+    map("FunctionExpression", AST_Function, "id>name, params@argnames, body%body");
     map("BinaryExpression", AST_Binary, "operator=operator, left>left, right>right");
     map("LogicalExpression", AST_Binary, "operator=operator, left>left, right>right");
     map("AssignmentExpression", AST_Assign, "operator=operator, left>left, right>right");
@@ -255,28 +208,6 @@
     map("NewExpression", AST_New, "callee>expression, arguments@args");
     map("CallExpression", AST_Call, "callee>expression, arguments@args");
 
-    def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
-        return to_moz_scope("Program", M);
-    });
-
-    def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) {
-        return {
-            type: "FunctionDeclaration",
-            id: to_moz(M.name),
-            params: M.argnames.map(to_moz),
-            body: to_moz_scope("BlockStatement", M)
-        }
-    });
-
-    def_to_moz(AST_Function, function To_Moz_FunctionExpression(M) {
-        return {
-            type: "FunctionExpression",
-            id: to_moz(M.name),
-            params: M.argnames.map(to_moz),
-            body: to_moz_scope("BlockStatement", M)
-        }
-    });
-
     def_to_moz(AST_Directive, function To_Moz_Directive(M) {
         return {
             type: "ExpressionStatement",
@@ -324,15 +255,15 @@
     def_to_moz(AST_Definitions, function To_Moz_VariableDeclaration(M) {
         return {
             type: "VariableDeclaration",
-            kind: "var",
+            kind: M instanceof AST_Const ? "const" : "var",
             declarations: M.definitions.map(to_moz)
         };
     });
 
-    def_to_moz(AST_Sequence, function To_Moz_SequenceExpression(M) {
+    def_to_moz(AST_Seq, function To_Moz_SequenceExpression(M) {
         return {
             type: "SequenceExpression",
-            expressions: M.expressions.map(to_moz)
+            expressions: M.to_array().map(to_moz)
         };
     });
 
@@ -364,13 +295,6 @@
         };
     });
 
-    def_to_moz(AST_Array, function To_Moz_ArrayExpression(M) {
-        return {
-            type: "ArrayExpression",
-            elements: M.elements.map(to_moz)
-        };
-    });
-
     def_to_moz(AST_Object, function To_Moz_ObjectExpression(M) {
         return {
             type: "ObjectExpression",
@@ -379,10 +303,11 @@
     });
 
     def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
-        var key = {
-            type: "Literal",
-            value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key
-        };
+        var key = (
+            is_identifier(M.key)
+            ? {type: "Identifier", name: M.key}
+            : {type: "Literal", value: M.key}
+        );
         var kind;
         if (M instanceof AST_ObjectKeyVal) {
             kind = "init";
@@ -409,19 +334,6 @@
         };
     });
 
-    def_to_moz(AST_RegExp, function To_Moz_RegExpLiteral(M) {
-        var value = M.value;
-        return {
-            type: "Literal",
-            value: value,
-            raw: value.toString(),
-            regex: {
-                pattern: value.source,
-                flags: value.toString().match(/[gimuy]*$/)[0]
-            }
-        };
-    });
-
     def_to_moz(AST_Constant, function To_Moz_Literal(M) {
         var value = M.value;
         if (typeof value === 'number' && (value < 0 || (value === 0 && 1 / value < 0))) {
@@ -431,15 +343,13 @@
                 prefix: true,
                 argument: {
                     type: "Literal",
-                    value: -value,
-                    raw: M.start.raw
+                    value: -value
                 }
             };
         }
         return {
             type: "Literal",
-            value: value,
-            raw: M.start.raw
+            value: value
         };
     });
 
@@ -459,12 +369,6 @@
 
     /* -----[ tools ]----- */
 
-    function raw_token(moznode) {
-        if (moznode.type == "Literal") {
-            return moznode.raw != null ? moznode.raw : moznode.value + "";
-        }
-    }
-
     function my_start_token(moznode) {
         var loc = moznode.loc, start = loc && loc.start;
         var range = moznode.range;
@@ -475,8 +379,7 @@
             pos     : range ? range[0] : moznode.start,
             endline : start && start.line,
             endcol  : start && start.column,
-            endpos  : range ? range[0] : moznode.start,
-            raw     : raw_token(moznode),
+            endpos  : range ? range[0] : moznode.start
         });
     };
 
@@ -490,14 +393,13 @@
             pos     : range ? range[1] : moznode.end,
             endline : end && end.line,
             endcol  : end && end.column,
-            endpos  : range ? range[1] : moznode.end,
-            raw     : raw_token(moznode),
+            endpos  : range ? range[1] : moznode.end
         });
     };
 
     function map(moztype, mytype, propmap) {
         var moz_to_me = "function From_Moz_" + moztype + "(M){\n";
-        moz_to_me += "return new U2." + mytype.name + "({\n" +
+        moz_to_me += "return new " + mytype.name + "({\n" +
             "start: my_start_token(M),\n" +
             "end: my_end_token(M)";
 
@@ -540,11 +442,11 @@
         //me_to_moz = parse(me_to_moz).print_to_string({ beautify: true });
         //console.log(moz_to_me);
 
-        moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(
-            exports, my_start_token, my_end_token, from_moz
+        moz_to_me = new Function("my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(
+            my_start_token, my_end_token, from_moz
         );
-        me_to_moz = new Function("to_moz", "to_moz_block", "to_moz_scope", "return(" + me_to_moz + ")")(
-            to_moz, to_moz_block, to_moz_scope
+        me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")(
+            to_moz, to_moz_block
         );
         MOZ_TO_ME[moztype] = moz_to_me;
         def_to_moz(mytype, me_to_moz);
@@ -602,14 +504,4 @@
         };
     };
 
-    function to_moz_scope(type, node) {
-        var body = node.body.map(to_moz);
-        if (node.body[0] instanceof AST_SimpleStatement && node.body[0].body instanceof AST_String) {
-            body.unshift(to_moz(new AST_EmptyStatement(node.body[0])));
-        }
-        return {
-            type: type,
-            body: body
-        };
-    };
 })();

lib/parse.js

@@ -46,7 +46,7 @@
 
 var KEYWORDS = 'break case catch const continue debugger default delete do else finally for function if in instanceof new return switch throw try typeof var void while with';
 var KEYWORDS_ATOM = 'false null true';
-var RESERVED_WORDS = 'abstract boolean byte char class double enum export extends final float goto implements import int interface let long native package private protected public short static super synchronized this throws transient volatile yield'
+var RESERVED_WORDS = 'abstract boolean byte char class double enum export extends final float goto implements import int interface long native package private protected public short static super synchronized this throws transient volatile yield'
     + " " + KEYWORDS_ATOM + " " + KEYWORDS;
 var KEYWORDS_BEFORE_EXPRESSION = 'return new delete throw else case';
 
@@ -59,6 +59,7 @@ var OPERATOR_CHARS = makePredicate(characters("+-*&%=<>!?|~^"));
 
 var RE_HEX_NUMBER = /^0x[0-9a-f]+$/i;
 var RE_OCT_NUMBER = /^0[0-7]+$/;
+var RE_DEC_NUMBER = /^\d*\.?\d*(?:e[+-]?\d*(?:\d\.?|\.?\d)\d*)?$/i;
 
 var OPERATORS = makePredicate([
     "in",
@@ -107,14 +108,14 @@ var OPERATORS = makePredicate([
     "||"
 ]);
 
-var WHITESPACE_CHARS = makePredicate(characters(" \u00a0\n\r\t\f\u000b\u200b\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000\uFEFF"));
+var WHITESPACE_CHARS = makePredicate(characters(" \u00a0\n\r\t\f\u000b\u200b\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000"));
 
-var NEWLINE_CHARS = makePredicate(characters("\n\r\u2028\u2029"));
-
-var PUNC_BEFORE_EXPRESSION = makePredicate(characters("[{(,;:"));
+var PUNC_BEFORE_EXPRESSION = makePredicate(characters("[{(,.;:"));
 
 var PUNC_CHARS = makePredicate(characters("[]{}(),;:"));
 
+var REGEXP_MODIFIERS = makePredicate(characters("gmsiy"));
+
 /* -----[ Tokenizer ]----- */
 
 // regexps adapted from http://xregexp.com/plugins/#unicode
@@ -181,26 +182,25 @@ function parse_js_number(num) {
         return parseInt(num.substr(2), 16);
     } else if (RE_OCT_NUMBER.test(num)) {
         return parseInt(num.substr(1), 8);
-    } else {
-        var val = parseFloat(num);
-        if (val == num) return val;
+    } else if (RE_DEC_NUMBER.test(num)) {
+        return parseFloat(num);
     }
 };
 
-function JS_Parse_Error(message, filename, line, col, pos) {
+function JS_Parse_Error(message, line, col, pos) {
     this.message = message;
-    this.filename = filename;
     this.line = line;
     this.col = col;
     this.pos = pos;
+    this.stack = new Error().stack;
+};
+
+JS_Parse_Error.prototype.toString = function() {
+    return this.message + " (line: " + this.line + ", col: " + this.col + ", pos: " + this.pos + ")" + "\n\n" + this.stack;
 };
-JS_Parse_Error.prototype = Object.create(Error.prototype);
-JS_Parse_Error.prototype.constructor = JS_Parse_Error;
-JS_Parse_Error.prototype.name = "SyntaxError";
-configure_error_stack(JS_Parse_Error);
 
 function js_error(message, filename, line, col, pos) {
-    throw new JS_Parse_Error(message, filename, line, col, pos);
+    throw new JS_Parse_Error(message, line, col, pos);
 };
 
 function is_token(token, type, val) {
@@ -209,10 +209,10 @@ function is_token(token, type, val) {
 
 var EX_EOF = {};
 
-function tokenizer($TEXT, filename, html5_comments, shebang) {
+function tokenizer($TEXT, filename, html5_comments) {
 
     var S = {
-        text            : $TEXT,
+        text            : $TEXT.replace(/\uFEFF/g, ''),
         filename        : filename,
         pos             : 0,
         tokpos          : 0,
@@ -222,9 +222,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         tokcol          : 0,
         newline_before  : false,
         regex_allowed   : false,
-        comments_before : [],
-        directives      : {},
-        directive_stack : []
+        comments_before : []
     };
 
     function peek() { return S.text.charAt(S.pos); };
@@ -233,7 +231,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         var ch = S.text.charAt(S.pos++);
         if (signal_eof && !ch)
             throw EX_EOF;
-        if (NEWLINE_CHARS(ch)) {
+        if ("\r\n\u2028\u2029".indexOf(ch) >= 0) {
             S.newline_before = S.newline_before || !in_string;
             ++S.line;
             S.col = 0;
@@ -256,16 +254,6 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         return S.text.substr(S.pos, str.length) == str;
     };
 
-    function find_eol() {
-        var text = S.text;
-        for (var i = S.pos, n = S.text.length; i < n; ++i) {
-            var ch = text[i];
-            if (NEWLINE_CHARS(ch))
-                return i;
-        }
-        return -1;
-    };
-
     function find(what, signal_eof) {
         var pos = S.text.indexOf(what, S.pos);
         if (signal_eof && pos == -1) throw EX_EOF;
@@ -283,11 +271,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         S.regex_allowed = ((type == "operator" && !UNARY_POSTFIX(value)) ||
                            (type == "keyword" && KEYWORDS_BEFORE_EXPRESSION(value)) ||
                            (type == "punc" && PUNC_BEFORE_EXPRESSION(value)));
-        if (type == "punc" && value == ".") {
-            prev_was_dot = true;
-        } else if (!is_comment) {
-            prev_was_dot = false;
-        }
+        prev_was_dot = (type == "punc" && value == ".");
         var ret = {
             type    : type,
             value   : value,
@@ -300,9 +284,6 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
             nlb     : S.newline_before,
             file    : filename
         };
-        if (/^(?:num|string|regexp)$/i.test(type)) {
-            ret.raw = $TEXT.substring(ret.pos, ret.endpos);
-        }
         if (!is_comment) {
             ret.comments_before = S.comments_before;
             S.comments_before = [];
@@ -350,9 +331,6 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
             return is_alphanumeric_char(code);
         });
         if (prefix) num = prefix + num;
-        if (RE_OCT_NUMBER.test(num) && next_token.has_directive("use strict")) {
-            parse_error("Legacy octal literals are not allowed in strict mode");
-        }
         var valid = parse_js_number(num);
         if (!isNaN(valid)) {
             return token("num", valid);
@@ -370,36 +348,14 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
           case 98  : return "\b";
           case 118 : return "\u000b"; // \v
           case 102 : return "\f";
+          case 48  : return "\0";
           case 120 : return String.fromCharCode(hex_bytes(2)); // \x
           case 117 : return String.fromCharCode(hex_bytes(4)); // \u
           case 10  : return ""; // newline
-          case 13  :            // \r
-            if (peek() == "\n") { // DOS newline
-                next(true, in_string);
-                return "";
-            }
+          default  : return ch;
         }
-        if (ch >= "0" && ch <= "7")
-            return read_octal_escape_sequence(ch);
-        return ch;
     };
 
-    function read_octal_escape_sequence(ch) {
-        // Read
-        var p = peek();
-        if (p >= "0" && p <= "7") {
-            ch += next(true);
-            if (ch[0] <= "3" && (p = peek()) >= "0" && p <= "7")
-                ch += next(true);
-        }
-
-        // Parse
-        if (ch === "0") return "\0";
-        if (ch.length > 0 && next_token.has_directive("use strict"))
-            parse_error("Legacy octal escape sequences are not allowed in strict mode");
-        return String.fromCharCode(parseInt(ch, 8));
-    }
-
     function hex_bytes(n) {
         var num = 0;
         for (; n > 0; --n) {
@@ -414,9 +370,25 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
     var read_string = with_eof_error("Unterminated string constant", function(quote_char){
         var quote = next(), ret = "";
         for (;;) {
-            var ch = next(true, true);
-            if (ch == "\\") ch = read_escaped_char(true);
-            else if (NEWLINE_CHARS(ch)) parse_error("Unterminated string constant");
+            var ch = next(true);
+            if (ch == "\\") {
+                // read OctalEscapeSequence (XXX: deprecated if "strict mode")
+                // https://github.com/mishoo/UglifyJS/issues/178
+                var octal_len = 0, first = null;
+                ch = read_while(function(ch){
+                    if (ch >= "0" && ch <= "7") {
+                        if (!first) {
+                            first = ch;
+                            return ++octal_len;
+                        }
+                        else if (first <= "3" && octal_len <= 2) return ++octal_len;
+                        else if (first >= "4" && octal_len <= 1) return ++octal_len;
+                    }
+                    return false;
+                });
+                if (octal_len > 0) ch = String.fromCharCode(parseInt(ch, 8));
+                else ch = read_escaped_char(true);
+            }
             else if (ch == quote) break;
             ret += ch;
         }
@@ -427,7 +399,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
 
     function skip_line_comment(type) {
         var regex_allowed = S.regex_allowed;
-        var i = find_eol(), ret;
+        var i = find("\n"), ret;
         if (i == -1) {
             ret = S.text.substr(S.pos);
             S.pos = S.text.length;
@@ -438,18 +410,25 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         S.col = S.tokcol + (S.pos - S.tokpos);
         S.comments_before.push(token(type, ret, true));
         S.regex_allowed = regex_allowed;
-        return next_token;
+        return next_token();
     };
 
     var skip_multiline_comment = with_eof_error("Unterminated multiline comment", function(){
         var regex_allowed = S.regex_allowed;
         var i = find("*/", true);
-        var text = S.text.substring(S.pos, i).replace(/\r\n|\r|\u2028|\u2029/g, '\n');
+        var text = S.text.substring(S.pos, i);
+        var a = text.split("\n"), n = a.length;
         // update stream position
-        forward(text.length /* doesn't count \r\n as 2 char while S.pos - i does */ + 2);
+        S.pos = i + 2;
+        S.line += n - 1;
+        if (n > 1) S.col = a[n - 1].length;
+        else S.col += a[n - 1].length;
+        S.col += 2;
+        var nlb = S.newline_before = S.newline_before || text.indexOf("\n") >= 0;
         S.comments_before.push(token("comment2", text, true));
         S.regex_allowed = regex_allowed;
-        return next_token;
+        S.newline_before = nlb;
+        return next_token();
     });
 
     function read_name() {
@@ -475,34 +454,26 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         return name;
     };
 
-    var read_regexp = with_eof_error("Unterminated regular expression", function(source) {
+    var read_regexp = with_eof_error("Unterminated regular expression", function(regexp){
         var prev_backslash = false, ch, in_class = false;
-        while ((ch = next(true))) if (NEWLINE_CHARS(ch)) {
-            parse_error("Unexpected line terminator");
-        } else if (prev_backslash) {
-            source += "\\" + ch;
+        while ((ch = next(true))) if (prev_backslash) {
+            regexp += "\\" + ch;
             prev_backslash = false;
         } else if (ch == "[") {
             in_class = true;
-            source += ch;
+            regexp += ch;
         } else if (ch == "]" && in_class) {
             in_class = false;
-            source += ch;
+            regexp += ch;
         } else if (ch == "/" && !in_class) {
             break;
         } else if (ch == "\\") {
             prev_backslash = true;
         } else {
-            source += ch;
+            regexp += ch;
         }
         var mods = read_name();
-        try {
-            var regexp = new RegExp(source, mods);
-            regexp.raw_source = source;
-            return token("regexp", regexp);
-        } catch(e) {
-            parse_error(e.message);
-        }
+        return token("regexp", new RegExp(regexp, mods));
     });
 
     function read_operator(prefix) {
@@ -562,44 +533,30 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
     function next_token(force_regexp) {
         if (force_regexp != null)
             return read_regexp(force_regexp);
-        if (shebang && S.pos == 0 && looking_at("#!")) {
-            start_token();
-            forward(2);
-            skip_line_comment("comment5");
-        }
-        for (;;) {
-            skip_whitespace();
-            start_token();
-            if (html5_comments) {
-                if (looking_at("<!--")) {
-                    forward(4);
-                    skip_line_comment("comment3");
-                    continue;
-                }
-                if (looking_at("-->") && S.newline_before) {
-                    forward(3);
-                    skip_line_comment("comment4");
-                    continue;
-                }
+        skip_whitespace();
+        start_token();
+        if (html5_comments) {
+            if (looking_at("<!--")) {
+                forward(4);
+                return skip_line_comment("comment3");
             }
-            var ch = peek();
-            if (!ch) return token("eof");
-            var code = ch.charCodeAt(0);
-            switch (code) {
-              case 34: case 39: return read_string(ch);
-              case 46: return handle_dot();
-              case 47: {
-                  var tok = handle_slash();
-                  if (tok === next_token) continue;
-                  return tok;
-              }
+            if (looking_at("-->") && S.newline_before) {
+                forward(3);
+                return skip_line_comment("comment4");
             }
-            if (is_digit(code)) return read_num();
-            if (PUNC_CHARS(ch)) return token("punc", next());
-            if (OPERATOR_CHARS(ch)) return read_operator();
-            if (code == 92 || is_identifier_start(code)) return read_word();
-            break;
         }
+        var ch = peek();
+        if (!ch) return token("eof");
+        var code = ch.charCodeAt(0);
+        switch (code) {
+          case 34: case 39: return read_string(ch);
+          case 46: return handle_dot();
+          case 47: return handle_slash();
+        }
+        if (is_digit(code)) return read_num();
+        if (PUNC_CHARS(ch)) return token("punc", next());
+        if (OPERATOR_CHARS(ch)) return read_operator();
+        if (code == 92 || is_identifier_start(code)) return read_word();
         parse_error("Unexpected character '" + ch + "'");
     };
 
@@ -608,34 +565,6 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         return S;
     };
 
-    next_token.add_directive = function(directive) {
-        S.directive_stack[S.directive_stack.length - 1].push(directive);
-
-        if (S.directives[directive] === undefined) {
-            S.directives[directive] = 1;
-        } else {
-            S.directives[directive]++;
-        }
-    }
-
-    next_token.push_directives_stack = function() {
-        S.directive_stack.push([]);
-    }
-
-    next_token.pop_directives_stack = function() {
-        var directives = S.directive_stack[S.directive_stack.length - 1];
-
-        for (var i = 0; i < directives.length; i++) {
-            S.directives[directives[i]]--;
-        }
-
-        S.directive_stack.pop();
-    }
-
-    next_token.has_directive = function(directive) {
-        return S.directives[directive] > 0;
-    }
-
     return next_token;
 
 };
@@ -682,26 +611,27 @@ var PRECEDENCE = (function(a, ret){
     {}
 );
 
-var ATOMIC_START_TOKEN = makePredicate([ "atom", "num", "string", "regexp", "name" ]);
+var STATEMENTS_WITH_LABELS = array_to_hash([ "for", "do", "while", "switch" ]);
+
+var ATOMIC_START_TOKEN = array_to_hash([ "atom", "num", "string", "regexp", "name" ]);
 
 /* -----[ Parser ]----- */
 
 function parse($TEXT, options) {
 
     options = defaults(options, {
-        bare_returns   : false,
-        expression     : false,
-        filename       : null,
-        html5_comments : true,
-        shebang        : true,
         strict         : false,
+        filename       : null,
         toplevel       : null,
-    }, true);
+        expression     : false,
+        html5_comments : true,
+        bare_returns   : false,
+    });
 
     var S = {
         input         : (typeof $TEXT == "string"
                          ? tokenizer($TEXT, options.filename,
-                                     options.html5_comments, options.shebang)
+                                     options.html5_comments)
                          : $TEXT),
         token         : null,
         prev          : null,
@@ -772,9 +702,9 @@ function parse($TEXT, options) {
         );
     };
 
-    function semicolon(optional) {
+    function semicolon() {
         if (is("punc", ";")) next();
-        else if (!optional && !can_insert_semicolon()) unexpected();
+        else if (!can_insert_semicolon()) unexpected();
     };
 
     function parenthesised() {
@@ -803,23 +733,21 @@ function parse($TEXT, options) {
     };
 
     var statement = embed_tokens(function() {
+        var tmp;
         handle_regexp();
         switch (S.token.type) {
           case "string":
-            if (S.in_directives) {
-                var token = peek();
-                if (S.token.raw.indexOf("\\") == -1
-                    && (token.nlb
-                        || is_token(token, "eof")
-                        || is_token(token, "punc", ";")
-                        || is_token(token, "punc", "}"))) {
-                    S.input.add_directive(S.token.value);
-                } else {
-                    S.in_directives = false;
-                }
-            }
             var dir = S.in_directives, stat = simple_statement();
-            return dir ? new AST_Directive(stat.body) : stat;
+            // XXXv2: decide how to fix directives
+            if (dir && stat.body instanceof AST_String && !is("punc", ",")) {
+                return new AST_Directive({
+                    start : stat.body.start,
+                    end   : stat.body.end,
+                    quote : stat.body.quote,
+                    value : stat.body.value,
+                });
+            }
+            return stat;
           case "num":
           case "regexp":
           case "operator":
@@ -843,7 +771,6 @@ function parse($TEXT, options) {
               case "(":
                 return simple_statement();
               case ";":
-                S.in_directives = false;
                 next();
                 return new AST_EmptyStatement();
               default:
@@ -851,104 +778,81 @@ function parse($TEXT, options) {
             }
 
           case "keyword":
-            switch (S.token.value) {
+            switch (tmp = S.token.value, next(), tmp) {
               case "break":
-                next();
                 return break_cont(AST_Break);
 
               case "continue":
-                next();
                 return break_cont(AST_Continue);
 
               case "debugger":
-                next();
                 semicolon();
                 return new AST_Debugger();
 
               case "do":
-                next();
-                var body = in_loop(statement);
-                expect_token("keyword", "while");
-                var condition = parenthesised();
-                semicolon(true);
                 return new AST_Do({
-                    body      : body,
-                    condition : condition
+                    body      : in_loop(statement),
+                    condition : (expect_token("keyword", "while"), tmp = parenthesised(), semicolon(), tmp)
                 });
 
               case "while":
-                next();
                 return new AST_While({
                     condition : parenthesised(),
                     body      : in_loop(statement)
                 });
 
               case "for":
-                next();
                 return for_();
 
               case "function":
-                next();
                 return function_(AST_Defun);
 
               case "if":
-                next();
                 return if_();
 
               case "return":
                 if (S.in_function == 0 && !options.bare_returns)
                     croak("'return' outside of function");
-                next();
-                var value = null;
-                if (is("punc", ";")) {
-                    next();
-                } else if (!can_insert_semicolon()) {
-                    value = expression(true);
-                    semicolon();
-                }
                 return new AST_Return({
-                    value: value
+                    value: ( is("punc", ";")
+                             ? (next(), null)
+                             : can_insert_semicolon()
+                             ? null
+                             : (tmp = expression(true), semicolon(), tmp) )
                 });
 
               case "switch":
-                next();
                 return new AST_Switch({
                     expression : parenthesised(),
                     body       : in_loop(switch_body_)
                 });
 
               case "throw":
-                next();
                 if (S.token.nlb)
                     croak("Illegal newline after 'throw'");
-                var value = expression(true);
-                semicolon();
                 return new AST_Throw({
-                    value: value
+                    value: (tmp = expression(true), semicolon(), tmp)
                 });
 
               case "try":
-                next();
                 return try_();
 
               case "var":
-                next();
-                var node = var_();
-                semicolon();
-                return node;
+                return tmp = var_(), semicolon(), tmp;
+
+              case "const":
+                return tmp = const_(), semicolon(), tmp;
 
               case "with":
-                if (S.input.has_directive("use strict")) {
-                    croak("Strict mode may not include a with statement");
-                }
-                next();
                 return new AST_With({
                     expression : parenthesised(),
                     body       : statement()
                 });
+
+              default:
+                unexpected();
             }
         }
-        unexpected();
     });
 
     function labeled_statement() {
@@ -1010,12 +914,8 @@ function parse($TEXT, options) {
                 ? (next(), var_(true))
                 : expression(true, true);
             if (is("operator", "in")) {
-                if (init instanceof AST_Var) {
-                    if (init.definitions.length > 1)
-                        croak("Only one variable declaration allowed in for..in loop", init.start.line, init.start.col, init.start.pos);
-                } else if (!is_assignable(init)) {
-                    croak("Invalid left-hand side in for..in loop", init.start.line, init.start.col, init.start.pos);
-                }
+                if (init instanceof AST_Var && init.definitions.length > 1)
+                    croak("Only one variable declaration allowed in for..in loop");
                 next();
                 return for_in(init);
             }
@@ -1055,32 +955,27 @@ function parse($TEXT, options) {
         if (in_statement && !name)
             unexpected();
         expect("(");
-        var argnames = [];
-        for (var first = true; !is("punc", ")");) {
-            if (first) first = false; else expect(",");
-            argnames.push(as_symbol(AST_SymbolFunarg));
-        }
-        next();
-        var loop = S.in_loop;
-        var labels = S.labels;
-        ++S.in_function;
-        S.in_directives = true;
-        S.input.push_directives_stack();
-        S.in_loop = 0;
-        S.labels = [];
-        var body = block_();
-        if (S.input.has_directive("use strict")) {
-            if (name) strict_verify_symbol(name);
-            argnames.forEach(strict_verify_symbol);
-        }
-        S.input.pop_directives_stack();
-        --S.in_function;
-        S.in_loop = loop;
-        S.labels = labels;
         return new ctor({
             name: name,
-            argnames: argnames,
-            body: body
+            argnames: (function(first, a){
+                while (!is("punc", ")")) {
+                    if (first) first = false; else expect(",");
+                    a.push(as_symbol(AST_SymbolFunarg));
+                }
+                next();
+                return a;
+            })(true, []),
+            body: (function(loop, labels){
+                ++S.in_function;
+                S.in_directives = true;
+                S.in_loop = 0;
+                S.labels = [];
+                var a = block_();
+                --S.in_function;
+                S.in_loop = loop;
+                S.labels = labels;
+                return a;
+            })(S.in_loop, S.labels)
         });
     };
 
@@ -1176,12 +1071,12 @@ function parse($TEXT, options) {
         });
     };
 
-    function vardefs(no_in) {
+    function vardefs(no_in, in_const) {
         var a = [];
         for (;;) {
             a.push(new AST_VarDef({
                 start : S.token,
-                name  : as_symbol(AST_SymbolVar),
+                name  : as_symbol(in_const ? AST_SymbolConst : AST_SymbolVar),
                 value : is("operator", "=") ? (next(), expression(false, no_in)) : null,
                 end   : prev()
             }));
@@ -1195,12 +1090,20 @@ function parse($TEXT, options) {
     var var_ = function(no_in) {
         return new AST_Var({
             start       : prev(),
-            definitions : vardefs(no_in),
+            definitions : vardefs(no_in, false),
             end         : prev()
         });
     };
 
-    var new_ = function(allow_calls) {
+    var const_ = function() {
+        return new AST_Const({
+            start       : prev(),
+            definitions : vardefs(false, true),
+            end         : prev()
+        });
+    };
+
+    var new_ = function() {
         var start = S.token;
         expect_token("operator", "new");
         var newexp = expr_atom(false), args;
@@ -1215,13 +1118,14 @@ function parse($TEXT, options) {
             expression : newexp,
             args       : args,
             end        : prev()
-        }), allow_calls);
+        }), true);
     };
 
     function as_atom_node() {
         var tok = S.token, ret;
         switch (tok.type) {
           case "name":
+          case "keyword":
             ret = _make_symbol(AST_SymbolRef);
             break;
           case "num":
@@ -1258,7 +1162,7 @@ function parse($TEXT, options) {
 
     var expr_atom = function(allow_calls) {
         if (is("operator", "new")) {
-            return new_(allow_calls);
+            return new_();
         }
         var start = S.token;
         if (is("punc")) {
@@ -1284,7 +1188,7 @@ function parse($TEXT, options) {
             func.end = prev();
             return subscripts(func, allow_calls);
         }
-        if (ATOMIC_START_TOKEN(S.token.type)) {
+        if (ATOMIC_START_TOKEN[S.token.type]) {
             return subscripts(as_atom_node(), allow_calls);
         }
         unexpected();
@@ -1312,10 +1216,6 @@ function parse($TEXT, options) {
         });
     });
 
-    var create_accessor = embed_tokens(function() {
-        return function_(AST_Accessor);
-    });
-
     var object_ = embed_tokens(function() {
         expect("{");
         var first = true, a = [];
@@ -1328,16 +1228,11 @@ function parse($TEXT, options) {
             var type = start.type;
             var name = as_property_name();
             if (type == "name" && !is("punc", ":")) {
-                var key = new AST_SymbolAccessor({
-                    start: S.token,
-                    name: as_property_name(),
-                    end: prev()
-                });
                 if (name == "get") {
                     a.push(new AST_ObjectGetter({
                         start : start,
-                        key   : key,
-                        value : create_accessor(),
+                        key   : as_atom_node(),
+                        value : function_(AST_Accessor),
                         end   : prev()
                     }));
                     continue;
@@ -1345,8 +1240,8 @@ function parse($TEXT, options) {
                 if (name == "set") {
                     a.push(new AST_ObjectSetter({
                         start : start,
-                        key   : key,
-                        value : create_accessor(),
+                        key   : as_atom_node(),
+                        value : function_(AST_Accessor),
                         end   : prev()
                     }));
                     continue;
@@ -1367,15 +1262,14 @@ function parse($TEXT, options) {
 
     function as_property_name() {
         var tmp = S.token;
+        next();
         switch (tmp.type) {
-          case "operator":
-            if (!KEYWORDS(tmp.value)) unexpected();
           case "num":
           case "string":
           case "name":
+          case "operator":
           case "keyword":
           case "atom":
-            next();
             return tmp.value;
           default:
             unexpected();
@@ -1384,9 +1278,16 @@ function parse($TEXT, options) {
 
     function as_name() {
         var tmp = S.token;
-        if (tmp.type != "name") unexpected();
         next();
-        return tmp.value;
+        switch (tmp.type) {
+          case "name":
+          case "operator":
+          case "keyword":
+          case "atom":
+            return tmp.value;
+          default:
+            unexpected();
+        }
     };
 
     function _make_symbol(type) {
@@ -1398,20 +1299,12 @@ function parse($TEXT, options) {
         });
     };
 
-    function strict_verify_symbol(sym) {
-        if (sym.name == "arguments" || sym.name == "eval")
-            croak("Unexpected " + sym.name + " in strict mode", sym.start.line, sym.start.col, sym.start.pos);
-    }
-
     function as_symbol(type, noerror) {
         if (!is("name")) {
             if (!noerror) croak("Name expected");
             return null;
         }
         var sym = _make_symbol(type);
-        if (S.input.has_directive("use strict") && sym instanceof AST_SymbolDeclaration) {
-            strict_verify_symbol(sym);
-        }
         next();
         return sym;
     };
@@ -1455,14 +1348,14 @@ function parse($TEXT, options) {
         if (is("operator") && UNARY_PREFIX(start.value)) {
             next();
             handle_regexp();
-            var ex = make_unary(AST_UnaryPrefix, start, maybe_unary(allow_calls));
+            var ex = make_unary(AST_UnaryPrefix, start.value, maybe_unary(allow_calls));
             ex.start = start;
             ex.end = prev();
             return ex;
         }
         var val = expr_atom(allow_calls);
         while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) {
-            val = make_unary(AST_UnaryPostfix, S.token, val);
+            val = make_unary(AST_UnaryPostfix, S.token.value, val);
             val.start = start;
             val.end = S.token;
             next();
@@ -1470,19 +1363,9 @@ function parse($TEXT, options) {
         return val;
     };
 
-    function make_unary(ctor, token, expr) {
-        var op = token.value;
-        switch (op) {
-          case "++":
-          case "--":
-            if (!is_assignable(expr))
-                croak("Invalid use of " + op + " operator", token.line, token.col, token.pos);
-            break;
-          case "delete":
-            if (expr instanceof AST_SymbolRef && S.input.has_directive("use strict"))
-                croak("Calling delete on expression not allowed in strict mode", expr.start.line, expr.start.col, expr.start.pos);
-            break;
-        }
+    function make_unary(ctor, op, expr) {
+        if ((op == "++" || op == "--") && !is_assignable(expr))
+            croak("Invalid use of " + op + " operator");
         return new ctor({ operator: op, expression: expr });
     };
 
@@ -1527,7 +1410,9 @@ function parse($TEXT, options) {
     };
 
     function is_assignable(expr) {
-        return expr instanceof AST_PropAccess || expr instanceof AST_SymbolRef;
+        if (!options.strict) return true;
+        if (expr instanceof AST_This) return false;
+        return (expr instanceof AST_PropAccess || expr instanceof AST_Symbol);
     };
 
     var maybe_assign = function(no_in) {
@@ -1551,18 +1436,17 @@ function parse($TEXT, options) {
 
     var expression = function(commas, no_in) {
         var start = S.token;
-        var exprs = [];
-        while (true) {
-            exprs.push(maybe_assign(no_in));
-            if (!commas || !is("punc", ",")) break;
+        var expr = maybe_assign(no_in);
+        if (commas && is("punc", ",")) {
             next();
-            commas = true;
+            return new AST_Seq({
+                start  : start,
+                car    : expr,
+                cdr    : expression(true, no_in),
+                end    : peek()
+            });
         }
-        return exprs.length == 1 ? exprs[0] : new AST_Sequence({
-            start       : start,
-            expressions : exprs,
-            end         : peek()
-        });
+        return expr;
     };
 
     function in_loop(cont) {
@@ -1579,10 +1463,8 @@ function parse($TEXT, options) {
     return (function(){
         var start = S.token;
         var body = [];
-        S.input.push_directives_stack();
         while (!is("eof"))
             body.push(statement());
-        S.input.pop_directives_stack();
         var end = prev();
         var toplevel = options.toplevel;
         if (toplevel) {

lib/propmangle.js

@@ -1,241 +0,0 @@
-/***********************************************************************
-
-  A JavaScript tokenizer / parser / beautifier / compressor.
-  https://github.com/mishoo/UglifyJS2
-
-  -------------------------------- (C) ---------------------------------
-
-                           Author: Mihai Bazon
-                         <mihai.bazon@gmail.com>
-                       http://mihai.bazon.net/blog
-
-  Distributed under the BSD license:
-
-    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
-
-    Redistribution and use in source and binary forms, with or without
-    modification, are permitted provided that the following conditions
-    are met:
-
-        * Redistributions of source code must retain the above
-          copyright notice, this list of conditions and the following
-          disclaimer.
-
-        * Redistributions in binary form must reproduce the above
-          copyright notice, this list of conditions and the following
-          disclaimer in the documentation and/or other materials
-          provided with the distribution.
-
-    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
-    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
-    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
-    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
-    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
-    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-    SUCH DAMAGE.
-
- ***********************************************************************/
-
-"use strict";
-
-function find_builtins(reserved) {
-    // NaN will be included due to Number.NaN
-    [
-        "null",
-        "true",
-        "false",
-        "Infinity",
-        "-Infinity",
-        "undefined",
-    ].forEach(add);
-    [ Object, Array, Function, Number,
-      String, Boolean, Error, Math,
-      Date, RegExp
-    ].forEach(function(ctor){
-        Object.getOwnPropertyNames(ctor).map(add);
-        if (ctor.prototype) {
-            Object.getOwnPropertyNames(ctor.prototype).map(add);
-        }
-    });
-    function add(name) {
-        push_uniq(reserved, name);
-    }
-}
-
-function reserve_quoted_keys(ast, reserved) {
-    function add(name) {
-        push_uniq(reserved, name);
-    }
-
-    ast.walk(new TreeWalker(function(node) {
-        if (node instanceof AST_ObjectKeyVal && node.quote) {
-            add(node.key);
-        } else if (node instanceof AST_Sub) {
-            addStrings(node.property, add);
-        }
-    }));
-}
-
-function addStrings(node, add) {
-    node.walk(new TreeWalker(function(node) {
-        if (node instanceof AST_Sequence) {
-            addStrings(node.expressions[node.expressions.length - 1], add);
-        } else if (node instanceof AST_String) {
-            add(node.value);
-        } else if (node instanceof AST_Conditional) {
-            addStrings(node.consequent, add);
-            addStrings(node.alternative, add);
-        }
-        return true;
-    }));
-}
-
-function mangle_properties(ast, options) {
-    options = defaults(options, {
-        builtins: false,
-        cache: null,
-        debug: false,
-        keep_quoted: false,
-        only_cache: false,
-        regex: null,
-        reserved: null,
-    }, true);
-
-    var reserved = options.reserved;
-    if (!Array.isArray(reserved)) reserved = [];
-    if (!options.builtins) find_builtins(reserved);
-
-    var cache = options.cache;
-    if (cache == null) {
-        cache = {
-            cname: -1,
-            props: new Dictionary()
-        };
-    }
-
-    var regex = options.regex;
-
-    // note debug is either false (disabled), or a string of the debug suffix to use (enabled).
-    // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true'
-    // the same as passing an empty string.
-    var debug = options.debug !== false;
-    var debug_name_suffix;
-    if (debug) {
-        debug_name_suffix = (options.debug === true ? "" : options.debug);
-    }
-
-    var names_to_mangle = [];
-    var unmangleable = [];
-
-    // step 1: find candidates to mangle
-    ast.walk(new TreeWalker(function(node){
-        if (node instanceof AST_ObjectKeyVal) {
-            add(node.key);
-        }
-        else if (node instanceof AST_ObjectProperty) {
-            // setter or getter, since KeyVal is handled above
-            add(node.key.name);
-        }
-        else if (node instanceof AST_Dot) {
-            add(node.property);
-        }
-        else if (node instanceof AST_Sub) {
-            addStrings(node.property, add);
-        }
-    }));
-
-    // step 2: transform the tree, renaming properties
-    return ast.transform(new TreeTransformer(function(node){
-        if (node instanceof AST_ObjectKeyVal) {
-            node.key = mangle(node.key);
-        }
-        else if (node instanceof AST_ObjectProperty) {
-            // setter or getter
-            node.key.name = mangle(node.key.name);
-        }
-        else if (node instanceof AST_Dot) {
-            node.property = mangle(node.property);
-        }
-        else if (!options.keep_quoted && node instanceof AST_Sub) {
-            node.property = mangleStrings(node.property);
-        }
-    }));
-
-    // only function declarations after this line
-
-    function can_mangle(name) {
-        if (unmangleable.indexOf(name) >= 0) return false;
-        if (reserved.indexOf(name) >= 0) return false;
-        if (options.only_cache) {
-            return cache.props.has(name);
-        }
-        if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false;
-        return true;
-    }
-
-    function should_mangle(name) {
-        if (regex && !regex.test(name)) return false;
-        if (reserved.indexOf(name) >= 0) return false;
-        return cache.props.has(name)
-            || names_to_mangle.indexOf(name) >= 0;
-    }
-
-    function add(name) {
-        if (can_mangle(name))
-            push_uniq(names_to_mangle, name);
-
-        if (!should_mangle(name)) {
-            push_uniq(unmangleable, name);
-        }
-    }
-
-    function mangle(name) {
-        if (!should_mangle(name)) {
-            return name;
-        }
-
-        var mangled = cache.props.get(name);
-        if (!mangled) {
-            if (debug) {
-                // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_.
-                var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_";
-
-                if (can_mangle(debug_mangled)) {
-                    mangled = debug_mangled;
-                }
-            }
-
-            // either debug mode is off, or it is on and we could not use the mangled name
-            if (!mangled) {
-                do {
-                    mangled = base54(++cache.cname);
-                } while (!can_mangle(mangled));
-            }
-
-            cache.props.set(name, mangled);
-        }
-        return mangled;
-    }
-
-    function mangleStrings(node) {
-        return node.transform(new TreeTransformer(function(node){
-            if (node instanceof AST_Sequence) {
-                var last = node.expressions.length - 1;
-                node.expressions[last] = mangleStrings(node.expressions[last]);
-            }
-            else if (node instanceof AST_String) {
-                node.value = mangle(node.value);
-            }
-            else if (node instanceof AST_Conditional) {
-                node.consequent = mangleStrings(node.consequent);
-                node.alternative = mangleStrings(node.alternative);
-            }
-            return node;
-        }));
-    }
-}

lib/scope.js

@@ -51,12 +51,10 @@ function SymbolDef(scope, index, orig) {
     this.global = false;
     this.mangled_name = null;
     this.undeclared = false;
+    this.constant = false;
     this.index = index;
-    this.id = SymbolDef.next_id++;
 };
 
-SymbolDef.next_id = 1;
-
 SymbolDef.prototype = {
     unmangleable: function(options) {
         if (!options) options = {};
@@ -69,72 +67,49 @@ SymbolDef.prototype = {
                     || this.orig[0] instanceof AST_SymbolDefun));
     },
     mangle: function(options) {
-        var cache = options.cache && options.cache.props;
-        if (this.global && cache && cache.has(this.name)) {
-            this.mangled_name = cache.get(this.name);
-        }
-        else if (!this.mangled_name && !this.unmangleable(options)) {
+        if (!this.mangled_name && !this.unmangleable(options)) {
             var s = this.scope;
-            var sym = this.orig[0];
-            if (options.ie8 && sym instanceof AST_SymbolLambda)
+            if (!options.screw_ie8 && this.orig[0] instanceof AST_SymbolLambda)
                 s = s.parent_scope;
-            var def;
-            if (def = this.redefined()) {
-                this.mangled_name = def.mangled_name || def.name;
-            } else
-                this.mangled_name = s.next_mangled(options, this);
-            if (this.global && cache) {
-                cache.set(this.name, this.mangled_name);
-            }
+            this.mangled_name = s.next_mangled(options, this);
         }
-    },
-    redefined: function() {
-        return this.defun && this.defun.variables.get(this.name);
     }
 };
 
 AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     options = defaults(options, {
-        cache: null,
-        ie8: false,
+        screw_ie8: false
     });
 
     // pass 1: setup scope chaining and handle definitions
     var self = this;
     var scope = self.parent_scope = null;
-    var labels = new Dictionary();
     var defun = null;
+    var nesting = 0;
     var tw = new TreeWalker(function(node, descend){
-        if (node instanceof AST_Catch) {
+        if (options.screw_ie8 && node instanceof AST_Catch) {
             var save_scope = scope;
             scope = new AST_Scope(node);
-            scope.init_scope_vars(save_scope);
+            scope.init_scope_vars(nesting);
+            scope.parent_scope = save_scope;
             descend();
             scope = save_scope;
             return true;
         }
         if (node instanceof AST_Scope) {
-            node.init_scope_vars(scope);
-            var save_scope = scope;
+            node.init_scope_vars(nesting);
+            var save_scope = node.parent_scope = scope;
             var save_defun = defun;
-            var save_labels = labels;
             defun = scope = node;
-            labels = new Dictionary();
-            descend();
+            ++nesting; descend(); --nesting;
             scope = save_scope;
             defun = save_defun;
-            labels = save_labels;
             return true;        // don't descend again in TreeWalker
         }
-        if (node instanceof AST_LabeledStatement) {
-            var l = node.label;
-            if (labels.has(l.name)) {
-                throw new Error(string_template("Label {name} defined twice", l));
-            }
-            labels.set(l.name, l);
-            descend();
-            labels.del(l.name);
-            return true;        // no descend again
+        if (node instanceof AST_Directive) {
+            node.scope = scope;
+            push_uniq(scope.directives, node.value);
+            return true;
         }
         if (node instanceof AST_With) {
             for (var s = scope; s; s = s.parent_scope)
@@ -144,10 +119,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
         if (node instanceof AST_Symbol) {
             node.scope = scope;
         }
-        if (node instanceof AST_Label) {
-            node.thedef = node;
-            node.references = [];
-        }
         if (node instanceof AST_SymbolLambda) {
             defun.def_function(node);
         }
@@ -159,144 +130,92 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             // later.
             (node.scope = defun.parent_scope).def_function(node);
         }
-        else if (node instanceof AST_SymbolVar) {
-            defun.def_variable(node);
-            if (defun !== scope) {
-                node.mark_enclosed(options);
-                var def = scope.find_variable(node);
-                if (node.thedef !== def) {
-                    node.thedef = def;
-                    node.reference(options);
-                }
-            }
+        else if (node instanceof AST_SymbolVar
+                 || node instanceof AST_SymbolConst) {
+            var def = defun.def_variable(node);
+            def.constant = node instanceof AST_SymbolConst;
+            def.init = tw.parent().value;
         }
         else if (node instanceof AST_SymbolCatch) {
-            scope.def_variable(node).defun = defun;
-        }
-        else if (node instanceof AST_LabelRef) {
-            var sym = labels.get(node.name);
-            if (!sym) throw new Error(string_template("Undefined label {name} [{line},{col}]", {
-                name: node.name,
-                line: node.start.line,
-                col: node.start.col
-            }));
-            node.thedef = sym;
+            (options.screw_ie8 ? scope : defun)
+                .def_variable(node);
         }
     });
     self.walk(tw);
 
     // pass 2: find back references and eval
-    self.globals = new Dictionary();
+    var func = null;
+    var globals = self.globals = new Dictionary();
     var tw = new TreeWalker(function(node, descend){
-        if (node instanceof AST_LoopControl && node.label) {
-            node.label.thedef.references.push(node);
+        if (node instanceof AST_Lambda) {
+            var prev_func = func;
+            func = node;
+            descend();
+            func = prev_func;
             return true;
         }
         if (node instanceof AST_SymbolRef) {
             var name = node.name;
-            if (name == "eval" && tw.parent() instanceof AST_Call) {
-                for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) {
-                    s.uses_eval = true;
-                }
-            }
             var sym = node.scope.find_variable(name);
             if (!sym) {
-                sym = self.def_global(node);
-            } else if (sym.scope instanceof AST_Lambda && name == "arguments") {
-                sym.scope.uses_arguments = true;
+                var g;
+                if (globals.has(name)) {
+                    g = globals.get(name);
+                } else {
+                    g = new SymbolDef(self, globals.size(), node);
+                    g.undeclared = true;
+                    g.global = true;
+                    globals.set(name, g);
+                }
+                node.thedef = g;
+                if (name == "eval" && tw.parent() instanceof AST_Call) {
+                    for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope)
+                        s.uses_eval = true;
+                }
+                if (func && name == "arguments") {
+                    func.uses_arguments = true;
+                }
+            } else {
+                node.thedef = sym;
             }
-            node.thedef = sym;
-            node.reference(options);
+            node.reference();
             return true;
         }
-        // ensure mangling works if catch reuses a scope variable
-        var def;
-        if (node instanceof AST_SymbolCatch && (def = node.definition().redefined())) {
-            var s = node.scope;
-            while (s) {
-                push_uniq(s.enclosed, def);
-                if (s === def.scope) break;
-                s = s.parent_scope;
-            }
-        }
     });
     self.walk(tw);
-
-    // pass 3: fix up any scoping issue with IE8
-    if (options.ie8) {
-        self.walk(new TreeWalker(function(node, descend) {
-            if (node instanceof AST_SymbolCatch) {
-                var name = node.name;
-                var refs = node.thedef.references;
-                var scope = node.thedef.defun;
-                var def = scope.find_variable(name) || self.globals.get(name) || scope.def_variable(node);
-                refs.forEach(function(ref) {
-                    ref.thedef = def;
-                    ref.reference(options);
-                });
-                node.thedef = def;
-                node.reference(options);
-                return true;
-            }
-        }));
-    }
-
-    if (options.cache) {
-        this.cname = options.cache.cname;
-    }
 });
 
-AST_Toplevel.DEFMETHOD("def_global", function(node){
-    var globals = this.globals, name = node.name;
-    if (globals.has(name)) {
-        return globals.get(name);
-    } else {
-        var g = new SymbolDef(this, globals.size(), node);
-        g.undeclared = true;
-        g.global = true;
-        globals.set(name, g);
-        return g;
-    }
+AST_Scope.DEFMETHOD("init_scope_vars", function(nesting){
+    this.directives = [];     // contains the directives defined in this scope, i.e. "use strict"
+    this.variables = new Dictionary(); // map name to AST_SymbolVar (variables defined in this scope; includes functions)
+    this.functions = new Dictionary(); // map name to AST_SymbolDefun (functions defined in this scope)
+    this.uses_with = false;   // will be set to true if this or some nested scope uses the `with` statement
+    this.uses_eval = false;   // will be set to true if this or nested scope uses the global `eval`
+    this.parent_scope = null; // the parent scope
+    this.enclosed = [];       // a list of variables from this or outer scope(s) that are referenced from this or inner scopes
+    this.cname = -1;          // the current index for mangling functions/variables
+    this.nesting = nesting;   // the nesting level of this scope (0 means toplevel)
 });
 
-AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){
-    this.variables = new Dictionary();  // map name to AST_SymbolVar (variables defined in this scope; includes functions)
-    this.functions = new Dictionary();  // map name to AST_SymbolDefun (functions defined in this scope)
-    this.uses_with = false;             // will be set to true if this or some nested scope uses the `with` statement
-    this.uses_eval = false;             // will be set to true if this or nested scope uses the global `eval`
-    this.parent_scope = parent_scope;   // the parent scope
-    this.enclosed = [];                 // a list of variables from this or outer scope(s) that are referenced from this or inner scopes
-    this.cname = -1;                    // the current index for mangling functions/variables
+AST_Scope.DEFMETHOD("strict", function(){
+    return this.has_directive("use strict");
 });
 
 AST_Lambda.DEFMETHOD("init_scope_vars", function(){
     AST_Scope.prototype.init_scope_vars.apply(this, arguments);
     this.uses_arguments = false;
-    this.def_variable(new AST_SymbolFunarg({
-        name: "arguments",
-        start: this.start,
-        end: this.end
-    }));
 });
 
-AST_Symbol.DEFMETHOD("mark_enclosed", function(options) {
+AST_SymbolRef.DEFMETHOD("reference", function() {
     var def = this.definition();
+    def.references.push(this);
     var s = this.scope;
     while (s) {
         push_uniq(s.enclosed, def);
-        if (options.keep_fnames) {
-            s.functions.each(function(d) {
-                push_uniq(def.scope.enclosed, d);
-            });
-        }
         if (s === def.scope) break;
         s = s.parent_scope;
     }
-});
-
-AST_Symbol.DEFMETHOD("reference", function(options) {
-    this.definition().references.push(this);
-    this.mark_enclosed(options);
+    this.frame = this.scope.nesting - def.scope.nesting;
 });
 
 AST_Scope.DEFMETHOD("find_variable", function(name){
@@ -305,6 +224,11 @@ AST_Scope.DEFMETHOD("find_variable", function(name){
         || (this.parent_scope && this.parent_scope.find_variable(name));
 });
 
+AST_Scope.DEFMETHOD("has_directive", function(value){
+    return this.parent_scope && this.parent_scope.has_directive(value)
+        || (this.directives.indexOf(value) >= 0 ? this : null);
+});
+
 AST_Scope.DEFMETHOD("def_function", function(symbol){
     this.functions.set(symbol.name, this.def_variable(symbol));
 });
@@ -329,8 +253,8 @@ AST_Scope.DEFMETHOD("next_mangled", function(options){
         if (!is_identifier(m)) continue; // skip over "do"
 
         // https://github.com/mishoo/UglifyJS2/issues/242 -- do not
-        // shadow a name reserved from mangling.
-        if (options.reserved.indexOf(m) >= 0) continue;
+        // shadow a name excepted from mangling.
+        if (options.except.indexOf(m) >= 0) continue;
 
         // we must ensure that the mangled name does not shadow a name
         // from some parent scope that is referenced in this or in
@@ -350,30 +274,49 @@ AST_Function.DEFMETHOD("next_mangled", function(options, def){
     // a function expression's argument cannot shadow the function expression's name
 
     var tricky_def = def.orig[0] instanceof AST_SymbolFunarg && this.name && this.name.definition();
-
-    // the function's mangled_name is null when keep_fnames is true
-    var tricky_name = tricky_def ? tricky_def.mangled_name || tricky_def.name : null;
-
     while (true) {
         var name = AST_Lambda.prototype.next_mangled.call(this, options, def);
-        if (!tricky_name || tricky_name != name)
+        if (!(tricky_def && tricky_def.mangled_name == name))
             return name;
     }
 });
 
+AST_Scope.DEFMETHOD("references", function(sym){
+    if (sym instanceof AST_Symbol) sym = sym.definition();
+    return this.enclosed.indexOf(sym) < 0 ? null : sym;
+});
+
 AST_Symbol.DEFMETHOD("unmangleable", function(options){
-    var def = this.definition();
-    return !def || def.unmangleable(options);
+    return this.definition().unmangleable(options);
+});
+
+// property accessors are not mangleable
+AST_SymbolAccessor.DEFMETHOD("unmangleable", function(){
+    return true;
 });
 
 // labels are always mangleable
-AST_Label.DEFMETHOD("unmangleable", return_false);
+AST_Label.DEFMETHOD("unmangleable", function(){
+    return false;
+});
 
 AST_Symbol.DEFMETHOD("unreferenced", function(){
     return this.definition().references.length == 0
         && !(this.scope.uses_eval || this.scope.uses_with);
 });
 
+AST_Symbol.DEFMETHOD("undeclared", function(){
+    return this.definition().undeclared;
+});
+
+AST_LabelRef.DEFMETHOD("undeclared", function(){
+    return false;
+});
+
+AST_Label.DEFMETHOD("undeclared", function(){
+    return false;
+});
+
 AST_Symbol.DEFMETHOD("definition", function(){
     return this.thedef;
 });
@@ -383,38 +326,24 @@ AST_Symbol.DEFMETHOD("global", function(){
 });
 
 AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){
-    options = defaults(options, {
+    return defaults(options, {
+        except      : [],
         eval        : false,
-        ie8         : false,
-        keep_fnames : false,
-        reserved    : [],
+        sort        : false,
         toplevel    : false,
+        screw_ie8   : false,
+        keep_fnames : false
     });
-    if (!Array.isArray(options.reserved)) options.reserved = [];
-    return options;
 });
 
 AST_Toplevel.DEFMETHOD("mangle_names", function(options){
     options = this._default_mangler_options(options);
-
-    // Never mangle arguments
-    options.reserved.push('arguments');
-
     // We only need to mangle declaration nodes.  Special logic wired
     // into the code generator will display the mangled name if it's
     // present (and for AST_SymbolRef-s it'll use the mangled name of
     // the AST_SymbolDeclaration that it points to).
     var lname = -1;
     var to_mangle = [];
-
-    if (options.cache) {
-        this.globals.each(function(symbol){
-            if (options.reserved.indexOf(symbol.name) < 0) {
-                to_mangle.push(symbol);
-            }
-        });
-    }
-
     var tw = new TreeWalker(function(node, descend){
         if (node instanceof AST_LabeledStatement) {
             // lname is incremented when we get to the AST_Label
@@ -426,10 +355,13 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
         if (node instanceof AST_Scope) {
             var p = tw.parent(), a = [];
             node.variables.each(function(symbol){
-                if (options.reserved.indexOf(symbol.name) < 0) {
+                if (options.except.indexOf(symbol.name) < 0) {
                     a.push(symbol);
                 }
             });
+            if (options.sort) a.sort(function(a, b){
+                return b.references.length - a.references.length;
+            });
             to_mangle.push.apply(to_mangle, a);
             return;
         }
@@ -439,84 +371,116 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
             node.mangled_name = name;
             return true;
         }
-        if (!options.ie8 && node instanceof AST_SymbolCatch) {
+        if (options.screw_ie8 && node instanceof AST_SymbolCatch) {
             to_mangle.push(node.definition());
             return;
         }
     });
     this.walk(tw);
     to_mangle.forEach(function(def){ def.mangle(options) });
-
-    if (options.cache) {
-        options.cache.cname = this.cname;
-    }
 });
 
 AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options){
     options = this._default_mangler_options(options);
-    try {
-        AST_Node.prototype.print = function(stream, force_parens) {
-            this._print(stream, force_parens);
-            if (this instanceof AST_Symbol && !this.unmangleable(options)) {
-                base54.consider(this.name, -1);
-            } else if (options.properties) {
-                if (this instanceof AST_Dot) {
-                    base54.consider(this.property, -1);
-                } else if (this instanceof AST_Sub) {
-                    skip_string(this.property);
-                }
-            }
-        };
-        base54.consider(this.print_to_string(), 1);
-    } finally {
-        AST_Node.prototype.print = AST_Node.prototype._print;
-    }
-    base54.sort();
-
-    function skip_string(node) {
-        if (node instanceof AST_String) {
-            base54.consider(node.value, -1);
-        } else if (node instanceof AST_Conditional) {
-            skip_string(node.consequent);
-            skip_string(node.alternative);
-        } else if (node instanceof AST_Sequence) {
-            skip_string(node.expressions[node.expressions.length - 1]);
+    var tw = new TreeWalker(function(node){
+        if (node instanceof AST_Constant)
+            base54.consider(node.print_to_string());
+        else if (node instanceof AST_Return)
+            base54.consider("return");
+        else if (node instanceof AST_Throw)
+            base54.consider("throw");
+        else if (node instanceof AST_Continue)
+            base54.consider("continue");
+        else if (node instanceof AST_Break)
+            base54.consider("break");
+        else if (node instanceof AST_Debugger)
+            base54.consider("debugger");
+        else if (node instanceof AST_Directive)
+            base54.consider(node.value);
+        else if (node instanceof AST_While)
+            base54.consider("while");
+        else if (node instanceof AST_Do)
+            base54.consider("do while");
+        else if (node instanceof AST_If) {
+            base54.consider("if");
+            if (node.alternative) base54.consider("else");
         }
-    }
+        else if (node instanceof AST_Var)
+            base54.consider("var");
+        else if (node instanceof AST_Const)
+            base54.consider("const");
+        else if (node instanceof AST_Lambda)
+            base54.consider("function");
+        else if (node instanceof AST_For)
+            base54.consider("for");
+        else if (node instanceof AST_ForIn)
+            base54.consider("for in");
+        else if (node instanceof AST_Switch)
+            base54.consider("switch");
+        else if (node instanceof AST_Case)
+            base54.consider("case");
+        else if (node instanceof AST_Default)
+            base54.consider("default");
+        else if (node instanceof AST_With)
+            base54.consider("with");
+        else if (node instanceof AST_ObjectSetter)
+            base54.consider("set" + node.key);
+        else if (node instanceof AST_ObjectGetter)
+            base54.consider("get" + node.key);
+        else if (node instanceof AST_ObjectKeyVal)
+            base54.consider(node.key);
+        else if (node instanceof AST_New)
+            base54.consider("new");
+        else if (node instanceof AST_This)
+            base54.consider("this");
+        else if (node instanceof AST_Try)
+            base54.consider("try");
+        else if (node instanceof AST_Catch)
+            base54.consider("catch");
+        else if (node instanceof AST_Finally)
+            base54.consider("finally");
+        else if (node instanceof AST_Symbol && node.unmangleable(options))
+            base54.consider(node.name);
+        else if (node instanceof AST_Unary || node instanceof AST_Binary)
+            base54.consider(node.operator);
+        else if (node instanceof AST_Dot)
+            base54.consider(node.property);
+    });
+    this.walk(tw);
+    base54.sort();
 });
 
 var base54 = (function() {
-    var leading = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_".split("");
-    var digits = "0123456789".split("");
+    var string = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_0123456789";
     var chars, frequency;
     function reset() {
         frequency = Object.create(null);
-        leading.forEach(function(ch) {
-            frequency[ch] = 0;
-        });
-        digits.forEach(function(ch) {
-            frequency[ch] = 0;
-        });
+        chars = string.split("").map(function(ch){ return ch.charCodeAt(0) });
+        chars.forEach(function(ch){ frequency[ch] = 0 });
     }
-    base54.consider = function(str, delta) {
+    base54.consider = function(str){
         for (var i = str.length; --i >= 0;) {
-            frequency[str[i]] += delta;
+            var code = str.charCodeAt(i);
+            if (code in frequency) ++frequency[code];
         }
     };
-    function compare(a, b) {
-        return frequency[b] - frequency[a];
-    }
     base54.sort = function() {
-        chars = mergeSort(leading, compare).concat(mergeSort(digits, compare));
+        chars = mergeSort(chars, function(a, b){
+            if (is_digit(a) && !is_digit(b)) return 1;
+            if (is_digit(b) && !is_digit(a)) return -1;
+            return frequency[b] - frequency[a];
+        });
     };
     base54.reset = reset;
     reset();
+    base54.get = function(){ return chars };
+    base54.freq = function(){ return frequency };
     function base54(num) {
         var ret = "", base = 54;
         num++;
         do {
             num--;
-            ret += chars[num % base];
+            ret += String.fromCharCode(chars[num % base]);
             num = Math.floor(num / base);
             base = 64;
         } while (num > 0);
@@ -524,3 +488,89 @@ var base54 = (function() {
     };
     return base54;
 })();
+
+AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
+    options = defaults(options, {
+        undeclared       : false, // this makes a lot of noise
+        unreferenced     : true,
+        assign_to_global : true,
+        func_arguments   : true,
+        nested_defuns    : true,
+        eval             : true
+    });
+    var tw = new TreeWalker(function(node){
+        if (options.undeclared
+            && node instanceof AST_SymbolRef
+            && node.undeclared())
+        {
+            // XXX: this also warns about JS standard names,
+            // i.e. Object, Array, parseInt etc.  Should add a list of
+            // exceptions.
+            AST_Node.warn("Undeclared symbol: {name} [{file}:{line},{col}]", {
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.assign_to_global)
+        {
+            var sym = null;
+            if (node instanceof AST_Assign && node.left instanceof AST_SymbolRef)
+                sym = node.left;
+            else if (node instanceof AST_ForIn && node.init instanceof AST_SymbolRef)
+                sym = node.init;
+            if (sym
+                && (sym.undeclared()
+                    || (sym.global() && sym.scope !== sym.definition().scope))) {
+                AST_Node.warn("{msg}: {name} [{file}:{line},{col}]", {
+                    msg: sym.undeclared() ? "Accidental global?" : "Assignment to global",
+                    name: sym.name,
+                    file: sym.start.file,
+                    line: sym.start.line,
+                    col: sym.start.col
+                });
+            }
+        }
+        if (options.eval
+            && node instanceof AST_SymbolRef
+            && node.undeclared()
+            && node.name == "eval") {
+            AST_Node.warn("Eval is used [{file}:{line},{col}]", node.start);
+        }
+        if (options.unreferenced
+            && (node instanceof AST_SymbolDeclaration || node instanceof AST_Label)
+            && !(node instanceof AST_SymbolCatch)
+            && node.unreferenced()) {
+            AST_Node.warn("{type} {name} is declared but not referenced [{file}:{line},{col}]", {
+                type: node instanceof AST_Label ? "Label" : "Symbol",
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.func_arguments
+            && node instanceof AST_Lambda
+            && node.uses_arguments) {
+            AST_Node.warn("arguments used in function {name} [{file}:{line},{col}]", {
+                name: node.name ? node.name.name : "anonymous",
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.nested_defuns
+            && node instanceof AST_Defun
+            && !(tw.parent() instanceof AST_Scope)) {
+            AST_Node.warn("Function {name} declared in nested statement \"{type}\" [{file}:{line},{col}]", {
+                name: node.name.name,
+                type: tw.parent().TYPE,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+    });
+    this.walk(tw);
+});

lib/sourcemap.js

@@ -53,21 +53,16 @@ function SourceMap(options) {
         orig_line_diff : 0,
         dest_line_diff : 0,
     });
-    var generator = new MOZ_SourceMap.SourceMapGenerator({
-        file       : options.file,
-        sourceRoot : options.root
-    });
     var orig_map = options.orig && new MOZ_SourceMap.SourceMapConsumer(options.orig);
-
-    if (orig_map && Array.isArray(options.orig.sources)) {
-        orig_map._sources.toArray().forEach(function(source) {
-            var sourceContent = orig_map.sourceContentFor(source, true);
-            if (sourceContent) {
-                generator.setSourceContent(source, sourceContent);
-            }
+    var generator;
+    if (orig_map) {
+      generator = MOZ_SourceMap.SourceMapGenerator.fromSourceMap(orig_map);
+    } else {
+        generator = new MOZ_SourceMap.SourceMapGenerator({
+            file       : options.file,
+            sourceRoot : options.root
         });
     }
-
     function add(source, gen_line, gen_col, orig_line, orig_col, name) {
         if (orig_map) {
             var info = orig_map.originalPositionFor({
@@ -88,7 +83,7 @@ function SourceMap(options) {
             source    : source,
             name      : name
         });
-    };
+    }
     return {
         add        : add,
         get        : function() { return generator },

lib/transform.js

@@ -64,7 +64,7 @@ TreeTransformer.prototype = new TreeWalker;
                     x = this;
                     descend(x, tw);
                 } else {
-                    tw.stack[tw.stack.length - 1] = x = this;
+                    tw.stack[tw.stack.length - 1] = x = this.clone();
                     descend(x, tw);
                     y = tw.after(x, in_list);
                     if (y !== undefined) x = y;
@@ -174,8 +174,9 @@ TreeTransformer.prototype = new TreeWalker;
         self.args = do_list(self.args, tw);
     });
 
-    _(AST_Sequence, function(self, tw){
-        self.expressions = do_list(self.expressions, tw);
+    _(AST_Seq, function(self, tw){
+        self.car = self.car.transform(tw);
+        self.cdr = self.cdr.transform(tw);
     });
 
     _(AST_Dot, function(self, tw){

lib/utils.js

@@ -43,6 +43,13 @@
 
 "use strict";
 
+function array_to_hash(a) {
+    var ret = Object.create(null);
+    for (var i = 0; i < a.length; ++i)
+        ret[a[i]] = true;
+    return ret;
+};
+
 function slice(a, start) {
     return Array.prototype.slice.call(a, start || 0);
 };
@@ -52,7 +59,10 @@ function characters(str) {
 };
 
 function member(name, array) {
-    return array.indexOf(name) >= 0;
+    for (var i = array.length; --i >= 0;)
+        if (array[i] == name)
+            return true;
+    return false;
 };
 
 function find_if(func, array) {
@@ -71,28 +81,13 @@ function repeat_string(str, i) {
     return d;
 };
 
-function configure_error_stack(fn) {
-    Object.defineProperty(fn.prototype, "stack", {
-        get: function() {
-            var err = new Error(this.message);
-            err.name = this.name;
-            try {
-                throw err;
-            } catch(e) {
-                return e.stack;
-            }
-        }
-    });
-}
-
 function DefaultsError(msg, defs) {
-    this.message = msg;
+    Error.call(this, msg);
+    this.msg = msg;
     this.defs = defs;
 };
 DefaultsError.prototype = Object.create(Error.prototype);
 DefaultsError.prototype.constructor = DefaultsError;
-DefaultsError.prototype.name = "DefaultsError";
-configure_error_stack(DefaultsError);
 
 DefaultsError.croak = function(msg, defs) {
     throw new DefaultsError(msg, defs);
@@ -102,28 +97,22 @@ function defaults(args, defs, croak) {
     if (args === true)
         args = {};
     var ret = args || {};
-    if (croak) for (var i in ret) if (HOP(ret, i) && !HOP(defs, i))
+    if (croak) for (var i in ret) if (ret.hasOwnProperty(i) && !defs.hasOwnProperty(i))
         DefaultsError.croak("`" + i + "` is not a supported option", defs);
-    for (var i in defs) if (HOP(defs, i)) {
-        ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
+    for (var i in defs) if (defs.hasOwnProperty(i)) {
+        ret[i] = (args && args.hasOwnProperty(i)) ? args[i] : defs[i];
     }
     return ret;
 };
 
 function merge(obj, ext) {
-    var count = 0;
-    for (var i in ext) if (HOP(ext, i)) {
+    for (var i in ext) if (ext.hasOwnProperty(i)) {
         obj[i] = ext[i];
-        count++;
     }
-    return count;
+    return obj;
 };
 
-function noop() {}
-function return_false() { return false; }
-function return_true() { return true; }
-function return_this() { return this; }
-function return_null() { return null; }
+function noop() {};
 
 var MAP = (function(){
     function MAP(a, f, backwards) {
@@ -159,7 +148,7 @@ var MAP = (function(){
             }
         }
         else {
-            for (i in a) if (HOP(a, i)) if (doit()) break;
+            for (i in a) if (a.hasOwnProperty(i)) if (doit()) break;
         }
         return top.concat(ret);
     };
@@ -180,7 +169,7 @@ function push_uniq(array, el) {
 
 function string_template(text, props) {
     return text.replace(/\{(.+?)\}/g, function(str, p){
-        return props && props[p];
+        return props[p];
     });
 };
 
@@ -239,19 +228,10 @@ function makePredicate(words) {
             }
         cats.push([words[i]]);
     }
-    function quote(word) {
-        return JSON.stringify(word).replace(/[\u2028\u2029]/g, function(s) {
-            switch (s) {
-                case "\u2028": return "\\u2028";
-                case "\u2029": return "\\u2029";
-            }
-            return s;
-        });
-    }
     function compareTo(arr) {
-        if (arr.length == 1) return f += "return str === " + quote(arr[0]) + ";";
+        if (arr.length == 1) return f += "return str === " + JSON.stringify(arr[0]) + ";";
         f += "switch(str){";
-        for (var i = 0; i < arr.length; ++i) f += "case " + quote(arr[i]) + ":";
+        for (var i = 0; i < arr.length; ++i) f += "case " + JSON.stringify(arr[i]) + ":";
         f += "return true}return false;";
     }
     // When there are more than three length categories, an outer
@@ -318,38 +298,5 @@ Dictionary.prototype = {
         for (var i in this._values)
             ret.push(f(this._values[i], i.substr(1)));
         return ret;
-    },
-    toObject: function() { return this._values }
-};
-Dictionary.fromObject = function(obj) {
-    var dict = new Dictionary();
-    dict._size = merge(dict._values, obj);
-    return dict;
-};
-
-function HOP(obj, prop) {
-    return Object.prototype.hasOwnProperty.call(obj, prop);
-}
-
-// return true if the node at the top of the stack (that means the
-// innermost node in the current output) is lexically the first in
-// a statement.
-function first_in_statement(stack) {
-    var node = stack.parent(-1);
-    for (var i = 0, p; p = stack.parent(i); i++) {
-        if (p instanceof AST_Statement && p.body === node)
-            return true;
-        if ((p instanceof AST_Sequence      && p.expressions[0] === node) ||
-            (p instanceof AST_Call          && p.expression === node && !(p instanceof AST_New) ) ||
-            (p instanceof AST_Dot           && p.expression === node ) ||
-            (p instanceof AST_Sub           && p.expression === node ) ||
-            (p instanceof AST_Conditional   && p.condition === node  ) ||
-            (p instanceof AST_Binary        && p.left === node       ) ||
-            (p instanceof AST_UnaryPostfix  && p.expression === node ))
-        {
-            node = p;
-        } else {
-            return false;
-        }
     }
-}
+};

package.json

@@ -1,44 +1,37 @@
 {
   "name": "uglify-js",
   "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
-  "homepage": "http://lisperator.net/uglifyjs",
-  "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
-  "license": "BSD-2-Clause",
-  "version": "3.1.1",
-  "engines": {
-    "node": ">=0.8.0"
-  },
-  "maintainers": [
-    "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)"
-  ],
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/mishoo/UglifyJS2.git"
-  },
-  "bugs": {
-    "url": "https://github.com/mishoo/UglifyJS2/issues"
-  },
-  "main": "tools/node.js",
-  "bin": {
-    "uglifyjs": "bin/uglifyjs"
-  },
-  "files": [
-    "bin",
-    "lib",
-    "tools",
-    "LICENSE"
-  ],
-  "dependencies": {
-    "commander": "~2.11.0",
-    "source-map": "~0.5.1"
-  },
-  "devDependencies": {
-    "acorn": "~5.1.1",
-    "mocha": "~3.5.1",
-    "semver": "~5.4.1"
-  },
-  "scripts": {
-    "test": "node test/run-tests.js"
-  },
-  "keywords": ["uglify", "uglify-js", "minify", "minifier", "es5"]
+    "homepage": "http://lisperator.net/uglifyjs",
+    "main": "tools/node.js",
+    "version": "2.4.17",
+    "engines": { "node" : ">=0.4.0" },
+    "maintainers": [{
+        "name": "Mihai Bazon",
+        "email": "mihai.bazon@gmail.com",
+        "web": "http://lisperator.net/"
+    }],
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/mishoo/UglifyJS2.git"
+    },
+    "dependencies": {
+        "async"      : "~0.2.6",
+        "source-map" : "0.1.34",
+        "yargs": "~1.3.3",
+        "uglify-to-browserify": "~1.0.0"
+    },
+    "devDependencies": {
+        "acorn": "~0.6.0",
+        "escodegen": "~1.3.3",
+        "esfuzz": "~0.3.1",
+        "estraverse": "~1.5.1"
+    },
+    "browserify": {
+        "transform": [ "uglify-to-browserify" ]
+    },
+    "bin": {
+        "uglifyjs" : "bin/uglifyjs"
+    },
+    "license": "BSD",
+    "scripts": {"test": "node test/run-tests.js"}
 }

test/benchmark.js

@@ -1,84 +0,0 @@
-#! /usr/bin/env node
-// -*- js -*-
-
-"use strict";
-
-var createHash = require("crypto").createHash;
-var fetch = require("./fetch");
-var fork = require("child_process").fork;
-var zlib = require("zlib");
-var args = process.argv.slice(2);
-if (!args.length) {
-    args.push("-mc");
-}
-args.push("--timings");
-var urls = [
-    "https://code.jquery.com/jquery-3.2.1.js",
-    "https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.4/angular.js",
-    "https://cdnjs.cloudflare.com/ajax/libs/mathjs/3.9.0/math.js",
-    "https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.js",
-    "https://unpkg.com/react@15.3.2/dist/react.js",
-    "http://builds.emberjs.com/tags/v2.11.0/ember.prod.js",
-    "https://cdn.jsdelivr.net/lodash/4.17.4/lodash.js",
-    "https://cdnjs.cloudflare.com/ajax/libs/d3/4.5.0/d3.js",
-];
-var results = {};
-var remaining = 2 * urls.length;
-function done() {
-    if (!--remaining) {
-        var failures = [];
-        urls.forEach(function(url) {
-            var info = results[url];
-            console.log();
-            console.log(url);
-            console.log(info.log);
-            console.log("Original:", info.input, "bytes");
-            console.log("Uglified:", info.output, "bytes");
-            console.log("GZipped: ", info.gzip, "bytes");
-            console.log("SHA1 sum:", info.sha1);
-            if (info.code) {
-                failures.push(url);
-            }
-        });
-        if (failures.length) {
-            console.error("Benchmark failed:");
-            failures.forEach(function(url) {
-                console.error(url);
-            });
-            process.exit(1);
-        }
-    }
-}
-urls.forEach(function(url) {
-    results[url] = {
-        input: 0,
-        output: 0,
-        gzip: 0,
-        log: ""
-    };
-    fetch(url, function(err, res) {
-        if (err) throw err;
-        var uglifyjs = fork("bin/uglifyjs", args, { silent: true });
-        res.on("data", function(data) {
-            results[url].input += data.length;
-        }).pipe(uglifyjs.stdin);
-        uglifyjs.stdout.on("data", function(data) {
-            results[url].output += data.length;
-        }).pipe(zlib.createGzip({
-            level: zlib.Z_BEST_COMPRESSION
-        })).on("data", function(data) {
-            results[url].gzip += data.length;
-        }).pipe(createHash("sha1")).on("data", function(data) {
-            results[url].sha1 = data.toString("hex");
-            done();
-        });
-        uglifyjs.stderr.setEncoding("utf8");
-        uglifyjs.stderr.on("data", function(data) {
-            results[url].log += data;
-        });
-        uglifyjs.on("exit", function(code) {
-            results[url].code = code;
-            done();
-        });
-    });
-});

test/compress/angular-inject.js

@@ -0,0 +1,67 @@
+ng_inject_defun: {
+    options = {
+        angular: true
+    };
+    input: {
+        /*@ngInject*/
+        function Controller(dependency) {
+            return dependency;
+        }
+    }
+    expect: {
+        function Controller(dependency) {
+            return dependency;
+        }
+        Controller.$inject=['dependency']
+    }
+}
+
+ng_inject_assignment: {
+    options = {
+        angular: true
+    };
+    input: {
+        /*@ngInject*/
+        var Controller = function(dependency) {
+            return dependency;
+        }
+    }
+    expect: {
+        var Controller = function(dependency) {
+            return dependency;
+        }
+        Controller.$inject=['dependency']
+    }
+}
+
+ng_inject_inline: {
+    options = {
+        angular: true
+    };
+    input: {
+        angular.module('a').
+            factory('b',
+                /*@ngInject*/
+                function(dependency) {
+                    return dependency;
+                }).
+            directive('c',
+                /*@ngInject*/
+                function(anotherDependency) {
+                    return anotherDependency;
+                })
+    }
+    expect: {
+        angular.module('a').
+            factory('b',[
+                'dependency',
+                function(dependency) {
+                    return dependency;
+                }]).
+            directive('c',[
+                'anotherDependency',
+                function(anotherDependency) {
+                    return anotherDependency;
+                }])
+    }
+}

test/compress/arrays.js

@@ -21,19 +21,10 @@ constant_join: {
     input: {
         var a = [ "foo", "bar", "baz" ].join("");
         var a1 = [ "foo", "bar", "baz" ].join();
-        var a2 = [ "foo", "bar", "baz" ].join(null);
-        var a3 = [ "foo", "bar", "baz" ].join(void 0);
-        var a4 = [ "foo", , "baz" ].join();
-        var a5 = [ "foo", null, "baz" ].join();
-        var a6 = [ "foo", void 0, "baz" ].join();
         var b = [ "foo", 1, 2, 3, "bar" ].join("");
         var c = [ boo(), "foo", 1, 2, 3, "bar", bar() ].join("");
         var c1 = [ boo(), bar(), "foo", 1, 2, 3, "bar", bar() ].join("");
         var c2 = [ 1, 2, "foo", "bar", baz() ].join("");
-        var c3 = [ boo() + bar() + "foo", 1, 2, 3, "bar", bar() + "foo" ].join("");
-        var c4 = [ 1, 2, null, undefined, "foo", "bar", baz() ].join("");
-        var c5 = [ boo() + bar() + "foo", 1, 2, 3, "bar", bar() + "foo" ].join();
-        var c6 = [ 1, 2, null, undefined, "foo", "bar", baz() ].join();
         var d = [ "foo", 1 + 2 + "bar", "baz" ].join("-");
         var e = [].join(foo + bar);
         var f = [].join("");
@@ -42,19 +33,10 @@ constant_join: {
     expect: {
         var a = "foobarbaz";
         var a1 = "foo,bar,baz";
-        var a2 = "foonullbarnullbaz";
-        var a3 = "foo,bar,baz";
-        var a4 = "foo,,baz";
-        var a5 = "foo,,baz";
-        var a6 = "foo,,baz";
         var b = "foo123bar";
         var c = boo() + "foo123bar" + bar();
         var c1 = "" + boo() + bar() + "foo123bar" + bar();
         var c2 = "12foobar" + baz();
-        var c3 = boo() + bar() + "foo123bar" + bar() + "foo";
-        var c4 = "12foobar" + baz();
-        var c5 = [ boo() + bar() + "foo", 1, 2, 3, "bar", bar() + "foo" ].join();
-        var c6 = [ "1,2,,,foo,bar", baz() ].join();
         var d = "foo-3bar-baz";
         var e = [].join(foo + bar);
         var f = "";
@@ -90,88 +72,3 @@ constant_join_2: {
         var f = "strstr" + variable + "foobarmoo" + foo;
     }
 }
-
-constant_join_3: {
-    options = {
-        unsafe: true,
-        evaluate: true,
-    };
-    input: {
-        var a = [ null ].join();
-        var b = [ , ].join();
-        var c = [ , 1, , 3 ].join();
-        var d = [ foo ].join();
-        var e = [ foo, null, undefined, bar ].join("-");
-        var f = [ foo, bar ].join("");
-        var g = [ null, "foo", null, bar + "baz" ].join("");
-        var h = [ null, "foo", null, bar + "baz" ].join("-");
-        var i = [ "foo" + bar, null, baz + "moo" ].join("");
-        var j = [ foo + "bar", baz ].join("");
-        var k = [ foo, "bar" + baz ].join("");
-        var l = [ foo, bar + "baz" ].join("");
-    }
-    expect: {
-        var a = "";
-        var b = "";
-        var c = ",1,,3";
-        var d = "" + foo;
-        var e = [ foo, "-", bar ].join("-");
-        var f = "" + foo + bar;
-        var g = "foo" + bar + "baz";
-        var h = [ "-foo-", bar + "baz" ].join("-");
-        var i = "foo" + bar + baz + "moo";
-        var j = foo + "bar" + baz;
-        var k = foo + "bar" + baz;
-        var l = foo + (bar + "baz");
-    }
-}
-
-for_loop: {
-    options = {
-        unsafe      : true,
-        unused      : true,
-        evaluate    : true,
-        reduce_vars : true
-    };
-    input: {
-        function f0() {
-            var a = [1, 2, 3];
-            for (var i = 0; i < a.length; i++) {
-                console.log(a[i]);
-            }
-        }
-
-        function f1() {
-            var a = [1, 2, 3];
-            for (var i = 0, len = a.length; i < len; i++) {
-                console.log(a[i]);
-            }
-        }
-
-        function f2() {
-            var a = [1, 2, 3];
-            for (var i = 0; i < a.length; i++) {
-                a[i]++;
-            }
-        }
-    }
-    expect: {
-        function f0() {
-            var a = [1, 2, 3];
-            for (var i = 0; i < 3; i++)
-                console.log(a[i]);
-        }
-
-        function f1() {
-            var a = [1, 2, 3];
-            for (var i = 0; i < 3; i++)
-                console.log(a[i]);
-        }
-
-        function f2() {
-            var a = [1, 2, 3];
-            for (var i = 0; i < a.length; i++)
-                a[i]++;
-        }
-    }
-}

test/compress/ascii.js

@@ -1,35 +0,0 @@
-ascii_only_true: {
-    options = {}
-    beautify = {
-        ascii_only : true,
-        ie8        : false,
-        beautify   : false,
-    }
-    input: {
-        function f() {
-            return "\x000\x001\x007\x008\x00" +
-                   "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" +
-                   "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
-                   "\x20\x21\x22\x23 ... \x7d\x7e\x7f\x80\x81 ... \xfe\xff\u0fff\uffff";
-        }
-    }
-    expect_exact: 'function f(){return"\\x000\\x001\\x007\\x008\\0"+"\\0\\x01\\x02\\x03\\x04\\x05\\x06\\x07\\b\\t\\n\\v\\f\\r\\x0e\\x0f"+"\\x10\\x11\\x12\\x13\\x14\\x15\\x16\\x17\\x18\\x19\\x1a\\x1b\\x1c\\x1d\\x1e\\x1f"+\' !"# ... }~\\x7f\\x80\\x81 ... \\xfe\\xff\\u0fff\\uffff\'}'
-}
-
-ascii_only_false: {
-    options = {}
-    beautify = {
-        ascii_only : false,
-        ie8        : false,
-        beautify   : false,
-    }
-    input: {
-        function f() {
-            return "\x000\x001\x007\x008\x00" +
-                   "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f" +
-                   "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
-                   "\x20\x21\x22\x23 ... \x7d\x7e\x7f\x80\x81 ... \xfe\xff\u0fff\uffff";
-        }
-    }
-    expect_exact: 'function f(){return"\\x000\\x001\\x007\\x008\\0"+"\\0\x01\x02\x03\x04\x05\x06\x07\\b\\t\\n\\v\\f\\r\x0e\x0f"+"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"+\' !"# ... }~\x7f\x80\x81 ... \xfe\xff\u0fff\uffff\'}'
-}

test/compress/asm.js

@@ -1,106 +0,0 @@
-asm_mixed: {
-    options = {
-        sequences     : true,
-        properties    : true,
-        dead_code     : true,
-        drop_debugger : true,
-        conditionals  : true,
-        comparisons   : true,
-        evaluate      : true,
-        booleans      : true,
-        loops         : true,
-        unused        : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        keep_fnames   : false,
-        hoist_vars    : true,
-        if_return     : true,
-        join_vars     : true,
-        cascade       : true,
-        side_effects  : true,
-        negate_iife   : true
-    };
-    input: {
-        // adapted from http://asmjs.org/spec/latest/
-        function asm_GeometricMean(stdlib, foreign, buffer) {
-          "use asm";
-          var exp = stdlib.Math.exp;
-          var log = stdlib.Math.log;
-          var values = new stdlib.Float64Array(buffer);
-          function logSum(start, end) {
-            start = start|0;
-            end = end|0;
-            var sum = 0.0, p = 0, q = 0;
-            // asm.js forces byte addressing of the heap by requiring shifting by 3
-            for (p = start << 3, q = end << 3; (p|0) < (q|0); p = (p + 8)|0) {
-              sum = sum + +log(values[p>>3]);
-            }
-            return +sum;
-          }
-          function geometricMean(start, end) {
-            start = start|0;
-            end = end|0;
-            return +exp(+logSum(start, end) / +((end - start)|0));
-          }
-          return { geometricMean: geometricMean };
-        }
-        function no_asm_GeometricMean(stdlib, foreign, buffer) {
-          var exp = stdlib.Math.exp;
-          var log = stdlib.Math.log;
-          var values = new stdlib.Float64Array(buffer);
-          function logSum(start, end) {
-            start = start|0;
-            end = end|0;
-            var sum = 0.0, p = 0, q = 0;
-            // asm.js forces byte addressing of the heap by requiring shifting by 3
-            for (p = start << 3, q = end << 3; (p|0) < (q|0); p = (p + 8)|0) {
-              sum = sum + +log(values[p>>3]);
-            }
-            return +sum;
-          }
-          function geometricMean(start, end) {
-            start = start|0;
-            end = end|0;
-            return +exp(+logSum(start, end) / +((end - start)|0));
-          }
-          return { geometricMean: geometricMean };
-        }
-    }
-    expect: {
-        function asm_GeometricMean(stdlib, foreign, buffer) {
-            "use asm";
-            var exp = stdlib.Math.exp;
-            var log = stdlib.Math.log;
-            var values = new stdlib.Float64Array(buffer);
-            function logSum(start, end) {
-                start = start | 0;
-                end = end | 0;
-                var sum = 0.0, p = 0, q = 0;
-                for (p = start << 3, q = end << 3; (p | 0) < (q | 0); p = p + 8 | 0) {
-                    sum = sum + +log(values[p >> 3]);
-                }
-                return +sum;
-            }
-            function geometricMean(start, end) {
-                start = start | 0;
-                end = end | 0;
-                return +exp(+logSum(start, end) / +(end - start | 0));
-            }
-            return { geometricMean: geometricMean };
-        }
-        function no_asm_GeometricMean(stdlib, foreign, buffer) {
-            function logSum(start, end) {
-                start |= 0, end |= 0;
-                var sum = 0, p = 0, q = 0;
-                for (p = start << 3, q = end << 3; (0 | p) < (0 | q); p = p + 8 | 0) sum += +log(values[p >> 3]);
-                return +sum;
-            }
-            function geometricMean(start, end) {
-                return start |= 0, end |= 0, +exp(+logSum(start, end) / +(end - start | 0));
-            }
-            var exp = stdlib.Math.exp, log = stdlib.Math.log, values = new stdlib.Float64Array(buffer);
-            return { geometricMean: geometricMean };
-        }
-    }
-}
-

test/compress/assignment.js

@@ -1,238 +0,0 @@
-op_equals_left_local_var: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        var x;
-
-        x = x +   3;
-        x = x -   3;
-        x = x /   3;
-        x = x *   3;
-        x = x >>  3;
-        x = x <<  3;
-        x = x >>> 3;
-        x = x |   3;
-        x = x ^   3;
-        x = x %   3;
-        x = x &   3;
-
-        x = x +   g();
-        x = x -   g();
-        x = x /   g();
-        x = x *   g();
-        x = x >>  g();
-        x = x <<  g();
-        x = x >>> g();
-        x = x |   g();
-        x = x ^   g();
-        x = x %   g();
-        x = x &   g();
-    }
-    expect: {
-        var x;
-
-        x   += 3;
-        x   -= 3;
-        x   /= 3;
-        x   *= 3;
-        x  >>= 3;
-        x  <<= 3;
-        x >>>= 3;
-        x   |= 3;
-        x   ^= 3;
-        x   %= 3;
-        x   &= 3;
-
-        x   += g();
-        x   -= g();
-        x   /= g();
-        x   *= g();
-        x  >>= g();
-        x  <<= g();
-        x >>>= g();
-        x   |= g();
-        x   ^= g();
-        x   %= g();
-        x   &= g();
-    }
-}
-
-op_equals_right_local_var: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        var x;
-
-        x = (x -= 2) ^ x;
-
-        x = 3 +   x;
-        x = 3 -   x;
-        x = 3 /   x;
-        x = 3 *   x;
-        x = 3 >>  x;
-        x = 3 <<  x;
-        x = 3 >>> x;
-        x = 3 |   x;
-        x = 3 ^   x;
-        x = 3 %   x;
-        x = 3 &   x;
-
-        x = g() +   x;
-        x = g() -   x;
-        x = g() /   x;
-        x = g() *   x;
-        x = g() >>  x;
-        x = g() <<  x;
-        x = g() >>> x;
-        x = g() |   x;
-        x = g() ^   x;
-        x = g() %   x;
-        x = g() &   x;
-    }
-    expect: {
-        var x;
-
-        x = (x -= 2) ^ x;
-
-        x = 3 + x;
-        x = 3 - x;
-        x = 3 / x;
-        x *= 3;
-        x = 3 >> x;
-        x = 3 << x;
-        x = 3 >>> x;
-        x |= 3;
-        x ^= 3;
-        x = 3 % x;
-        x &= 3;
-
-        x = g() +   x;
-        x = g() -   x;
-        x = g() /   x;
-        x = g() *   x;
-        x = g() >>  x;
-        x = g() <<  x;
-        x = g() >>> x;
-        x = g() |   x;
-        x = g() ^   x;
-        x = g() %   x;
-        x = g() &   x;
-    }
-}
-op_equals_left_global_var: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        x = x +   3;
-        x = x -   3;
-        x = x /   3;
-        x = x *   3;
-        x = x >>  3;
-        x = x <<  3;
-        x = x >>> 3;
-        x = x |   3;
-        x = x ^   3;
-        x = x %   3;
-        x = x &   3;
-
-        x = x +   g();
-        x = x -   g();
-        x = x /   g();
-        x = x *   g();
-        x = x >>  g();
-        x = x <<  g();
-        x = x >>> g();
-        x = x |   g();
-        x = x ^   g();
-        x = x %   g();
-        x = x &   g();
-    }
-    expect: {
-        x   += 3;
-        x   -= 3;
-        x   /= 3;
-        x   *= 3;
-        x  >>= 3;
-        x  <<= 3;
-        x >>>= 3;
-        x   |= 3;
-        x   ^= 3;
-        x   %= 3;
-        x   &= 3;
-
-        x   += g();
-        x   -= g();
-        x   /= g();
-        x   *= g();
-        x  >>= g();
-        x  <<= g();
-        x >>>= g();
-        x   |= g();
-        x   ^= g();
-        x   %= g();
-        x   &= g();
-    }
-}
-
-op_equals_right_global_var: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        x = (x -= 2) ^ x;
-
-        x = 3 +   x;
-        x = 3 -   x;
-        x = 3 /   x;
-        x = 3 *   x;
-        x = 3 >>  x;
-        x = 3 <<  x;
-        x = 3 >>> x;
-        x = 3 |   x;
-        x = 3 ^   x;
-        x = 3 %   x;
-        x = 3 &   x;
-
-        x = g() +   x;
-        x = g() -   x;
-        x = g() /   x;
-        x = g() *   x;
-        x = g() >>  x;
-        x = g() <<  x;
-        x = g() >>> x;
-        x = g() |   x;
-        x = g() ^   x;
-        x = g() %   x;
-        x = g() &   x;
-    }
-    expect: {
-        x = (x -= 2) ^ x;
-
-        x = 3 +   x;
-        x = 3 -   x;
-        x = 3 /   x;
-        x *= 3;
-        x = 3 >>  x;
-        x = 3 <<  x;
-        x = 3 >>> x;
-        x |= 3;
-        x ^= 3;
-        x = 3 %   x;
-        x &= 3;
-
-        x = g() +   x;
-        x = g() -   x;
-        x = g() /   x;
-        x = g() *   x;
-        x = g() >>  x;
-        x = g() <<  x;
-        x = g() >>> x;
-        x = g() |   x;
-        x = g() ^   x;
-        x = g() %   x;
-        x = g() &   x;
-    }
-}

test/compress/comparing.js

@@ -1,76 +0,0 @@
-keep_comparisons: {
-    options = {
-        comparisons: true,
-        unsafe_comps: false
-    }
-    input: {
-        var obj1 = {
-            valueOf: function() {triggeredFirst();}
-        }
-        var obj2 = {
-            valueOf: function() {triggeredSecond();}
-        }
-        var result1 = obj1 <= obj2;
-        var result2 = obj1 <  obj2;
-        var result3 = obj1 >= obj2;
-        var result4 = obj1 >  obj2;
-    }
-    expect: {
-        var obj1 = {
-            valueOf: function() {triggeredFirst();}
-        }
-        var obj2 = {
-            valueOf: function() {triggeredSecond();}
-        }
-        var result1 = obj1 <= obj2;
-        var result2 = obj1 <  obj2;
-        var result3 = obj1 >= obj2;
-        var result4 = obj1 >  obj2;
-    }
-}
-
-keep_comparisons_with_unsafe_comps: {
-    options = {
-        comparisons: true,
-        unsafe_comps: true
-    }
-    input: {
-        var obj1 = {
-            valueOf: function() {triggeredFirst();}
-        }
-        var obj2 = {
-            valueOf: function() {triggeredSecond();}
-        }
-        var result1 = obj1 <= obj2;
-        var result2 = obj1 <  obj2;
-        var result3 = obj1 >= obj2;
-        var result4 = obj1 >  obj2;
-    }
-    expect: {
-        var obj1 = {
-            valueOf: function() {triggeredFirst();}
-        }
-        var obj2 = {
-            valueOf: function() {triggeredSecond();}
-        }
-        var result1 = obj2 >= obj1;
-        var result2 = obj2 >  obj1;
-        var result3 = obj1 >= obj2;
-        var result4 = obj1 >  obj2;
-    }
-}
-
-dont_change_in_or_instanceof_expressions: {
-    input: {
-        1 in 1;
-        null in null;
-        1 instanceof 1;
-        null instanceof null;
-    }
-    expect: {
-        1 in 1;
-        null in null;
-        1 instanceof 1;
-        null instanceof null;
-    }
-}

test/compress/concat-strings.js

@@ -11,9 +11,6 @@ concat_1: {
         var d = 1 + x() + 2 + 3 + "boo";
 
         var e = 1 + x() + 2 + "X" + 3 + "boo";
-
-        // be careful with concatentation with "\0" with octal-looking strings.
-        var f = "\0" + 360 + "\0" + 8 + "\0";
     }
     expect: {
         var a = "foobar" + x() + "moofoo" + y() + "xyz" + q();
@@ -21,203 +18,5 @@ concat_1: {
         var c = 1 + x() + 2 + "boo";
         var d = 1 + x() + 2 + 3 + "boo";
         var e = 1 + x() + 2 + "X3boo";
-        var f = "\x00360\x008\0";
     }
 }
-
-concat_2: {
-    options = {};
-    input: {
-        console.log(
-            1 + (2 + 3),
-            1 + (2 + "3"),
-            1 + ("2" + 3),
-            1 + ("2" + "3"),
-            "1" + (2 + 3),
-            "1" + (2 + "3"),
-            "1" + ("2" + 3),
-            "1" + ("2" + "3")
-        );
-    }
-    expect: {
-        console.log(
-            1 + (2 + 3),
-            1 + (2 + "3"),
-            1 + "2" + 3,
-            1 + "2" + "3",
-            "1" + (2 + 3),
-            "1" + 2 + "3",
-            "1" + "2" + 3,
-            "1" + "2" + "3"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_3: {
-    options = {};
-    input: {
-        console.log(
-            1 + 2 + (3 + 4 + 5),
-            1 + 2 + (3 + 4 + "5"),
-            1 + 2 + (3 + "4" + 5),
-            1 + 2 + (3 + "4" + "5"),
-            1 + 2 + ("3" + 4 + 5),
-            1 + 2 + ("3" + 4 + "5"),
-            1 + 2 + ("3" + "4" + 5),
-            1 + 2 + ("3" + "4" + "5")
-        );
-    }
-    expect: {
-        console.log(
-            1 + 2 + (3 + 4 + 5),
-            1 + 2 + (3 + 4 + "5"),
-            1 + 2 + (3 + "4") + 5,
-            1 + 2 + (3 + "4") + "5",
-            1 + 2 + "3" + 4 + 5,
-            1 + 2 + "3" + 4 + "5",
-            1 + 2 + "3" + "4" + 5,
-            1 + 2 + "3" + "4" + "5"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_4: {
-    options = {};
-    input: {
-        console.log(
-            1 + "2" + (3 + 4 + 5),
-            1 + "2" + (3 + 4 + "5"),
-            1 + "2" + (3 + "4" + 5),
-            1 + "2" + (3 + "4" + "5"),
-            1 + "2" + ("3" + 4 + 5),
-            1 + "2" + ("3" + 4 + "5"),
-            1 + "2" + ("3" + "4" + 5),
-            1 + "2" + ("3" + "4" + "5")
-        );
-    }
-    expect: {
-        console.log(
-            1 + "2" + (3 + 4 + 5),
-            1 + "2" + (3 + 4) + "5",
-            1 + "2" + 3 + "4" + 5,
-            1 + "2" + 3 + "4" + "5",
-            1 + "2" + "3" + 4 + 5,
-            1 + "2" + "3" + 4 + "5",
-            1 + "2" + "3" + "4" + 5,
-            1 + "2" + "3" + "4" + "5"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_5: {
-    options = {};
-    input: {
-        console.log(
-            "1" + 2 + (3 + 4 + 5),
-            "1" + 2 + (3 + 4 + "5"),
-            "1" + 2 + (3 + "4" + 5),
-            "1" + 2 + (3 + "4" + "5"),
-            "1" + 2 + ("3" + 4 + 5),
-            "1" + 2 + ("3" + 4 + "5"),
-            "1" + 2 + ("3" + "4" + 5),
-            "1" + 2 + ("3" + "4" + "5")
-        );
-    }
-    expect: {
-        console.log(
-            "1" + 2 + (3 + 4 + 5),
-            "1" + 2 + (3 + 4) + "5",
-            "1" + 2 + 3 + "4" + 5,
-            "1" + 2 + 3 + "4" + "5",
-            "1" + 2 + "3" + 4 + 5,
-            "1" + 2 + "3" + 4 + "5",
-            "1" + 2 + "3" + "4" + 5,
-            "1" + 2 + "3" + "4" + "5"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_6: {
-    options = {};
-    input: {
-        console.log(
-            "1" + "2" + (3 + 4 + 5),
-            "1" + "2" + (3 + 4 + "5"),
-            "1" + "2" + (3 + "4" + 5),
-            "1" + "2" + (3 + "4" + "5"),
-            "1" + "2" + ("3" + 4 + 5),
-            "1" + "2" + ("3" + 4 + "5"),
-            "1" + "2" + ("3" + "4" + 5),
-            "1" + "2" + ("3" + "4" + "5")
-        );
-    }
-    expect: {
-        console.log(
-            "1" + "2" + (3 + 4 + 5),
-            "1" + "2" + (3 + 4) + "5",
-            "1" + "2" + 3 + "4" + 5,
-            "1" + "2" + 3 + "4" + "5",
-            "1" + "2" + "3" + 4 + 5,
-            "1" + "2" + "3" + 4 + "5",
-            "1" + "2" + "3" + "4" + 5,
-            "1" + "2" + "3" + "4" + "5"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_7: {
-    input: {
-        console.log(
-            "" + 1,
-            "" + "1",
-            "" + 1 + 2,
-            "" + 1 + "2",
-            "" + "1" + 2,
-            "" + "1" + "2",
-            "" + (x += "foo")
-        );
-    }
-    expect: {
-        console.log(
-            "" + 1,
-            "1",
-            "" + 1 + 2,
-            1 + "2",
-            "1" + 2,
-            "1" + "2",
-            x += "foo"
-        );
-    }
-    expect_stdout: true
-}
-
-concat_8: {
-    input: {
-        console.log(
-            1 + "",
-            "1" + "",
-            1 + 2 + "",
-            1 + "2" + "",
-            "1" + 2 + "",
-            "1" + "2" + "",
-            (x += "foo") + ""
-        );
-    }
-    expect: {
-        console.log(
-            1 + "",
-            "1",
-            1 + 2 + "",
-            1 + "2",
-            "1" + 2,
-            "1" + "2",
-            x += "foo"
-        );
-    }
-    expect_stdout: true
-}

test/compress/conditionals.js

@@ -50,8 +50,7 @@ ifs_3_should_warn: {
         conditionals : true,
         dead_code    : true,
         evaluate     : true,
-        booleans     : true,
-        side_effects : true,
+        booleans     : true
     };
     input: {
         var x, y;
@@ -87,9 +86,7 @@ ifs_4: {
             x(foo)[10].bar.baz = something_else();
     }
     expect: {
-        foo && bar
-            ? x(foo)[10].bar.baz = something()
-            : x(foo)[10].bar.baz = something_else();
+        x(foo)[10].bar.baz = (foo && bar) ? something() : something_else();
     }
 }
 
@@ -136,28 +133,14 @@ ifs_6: {
         comparisons: true
     };
     input: {
-        var x, y;
         if (!foo && !bar && !baz && !boo) {
             x = 10;
         } else {
             x = 20;
         }
-        if (y) {
-            x[foo] = 10;
-        } else {
-            x[foo] = 20;
-        }
-        if (foo) {
-            x[bar] = 10;
-        } else {
-            x[bar] = 20;
-        }
     }
     expect: {
-        var x, y;
         x = foo || bar || baz || boo ? 20 : 10;
-        x[foo] = y ? 10 : 20;
-        foo ? x[bar] = 10 : x[bar] = 20;
     }
 }
 
@@ -166,22 +149,14 @@ cond_1: {
         conditionals: true
     };
     input: {
-        var do_something; // if undeclared it's assumed to have side-effects
         if (some_condition()) {
             do_something(x);
         } else {
             do_something(y);
         }
-        if (some_condition()) {
-            side_effects(x);
-        } else {
-            side_effects(y);
-        }
     }
     expect: {
-        var do_something;
         do_something(some_condition() ? x : y);
-        some_condition() ? side_effects(x) : side_effects(y);
     }
 }
 
@@ -190,7 +165,6 @@ cond_2: {
         conditionals: true
     };
     input: {
-        var x, FooBar;
         if (some_condition()) {
             x = new FooBar(1);
         } else {
@@ -198,7 +172,6 @@ cond_2: {
         }
     }
     expect: {
-        var x, FooBar;
         x = new FooBar(some_condition() ? 1 : 2);
     }
 }
@@ -208,7 +181,6 @@ cond_3: {
         conditionals: true
     };
     input: {
-        var FooBar;
         if (some_condition()) {
             new FooBar(1);
         } else {
@@ -216,7 +188,6 @@ cond_3: {
         }
     }
     expect: {
-        var FooBar;
         some_condition() ? new FooBar(1) : FooBar(2);
     }
 }
@@ -226,22 +197,14 @@ cond_4: {
         conditionals: true
     };
     input: {
-        var do_something;
         if (some_condition()) {
             do_something();
         } else {
             do_something();
         }
-        if (some_condition()) {
-            side_effects();
-        } else {
-            side_effects();
-        }
     }
     expect: {
-        var do_something;
         some_condition(), do_something();
-        some_condition(), side_effects();
     }
 }
 
@@ -275,8 +238,7 @@ cond_5: {
 cond_7: {
     options = {
         conditionals: true,
-        evaluate    : true,
-        side_effects: true,
+        evaluate    : true
     };
     input: {
         var x, y, z, a, b;
@@ -341,7 +303,6 @@ cond_7_1: {
         evaluate    : true
     };
     input: {
-        var x;
         // access to global should be assumed to have side effects
         if (y) {
             x = 1+1;
@@ -350,7 +311,6 @@ cond_7_1: {
         }
     }
     expect: {
-        var x;
         x = (y, 2);
     }
 }
@@ -358,19 +318,15 @@ cond_7_1: {
 cond_8: {
     options = {
         conditionals: true,
-        evaluate    : true,
-        booleans    : false
+        evaluate    : true
     };
     input: {
-        var a;
         // compress these
         a = condition ? true : false;
-        a = !condition ? true : false;
-        a = condition() ? true : false;
 
-        a = condition ? !0 : !1;
-        a = !condition ? !null : !2;
-        a = condition() ? !0 : !-3.5;
+        a = !condition ? true : false;
+
+        a = condition() ? true : false;
 
         if (condition) {
             a = true;
@@ -378,19 +334,11 @@ cond_8: {
             a = false;
         }
 
-        if (condition) {
-            a = !0;
-        } else {
-            a = !1;
-        }
-
         a = condition ? false : true;
-        a = !condition ? false : true;
-        a = condition() ? false : true;
 
-        a = condition ? !3 : !0;
-        a = !condition ? !2 : !0;
-        a = condition() ? !1 : !0;
+        a = !condition ? false : true;
+
+        a = condition() ? false : true;
 
         if (condition) {
             a = false;
@@ -398,620 +346,25 @@ cond_8: {
             a = true;
         }
 
-        if (condition) {
-            a = !1;
-        } else {
-            a = !0;
-        }
-
         // don't compress these
         a = condition ? 1 : false;
+
         a = !condition ? true : 0;
+
         a = condition ? 1 : 0;
+
     }
     expect: {
-        var a;
         a = !!condition;
         a = !condition;
         a = !!condition();
-
         a = !!condition;
-        a = !condition;
-        a = !!condition();
-
-        a = !!condition;
-        a = !!condition;
-
         a = !condition;
         a = !!condition;
         a = !condition();
-
         a = !condition;
-        a = !!condition;
-        a = !condition();
-
-        a = !condition;
-        a = !condition;
-
-        a = !!condition && 1;
-        a = !condition || 0;
-        a = condition ? 1 : 0;
-    }
-}
-
-cond_8b: {
-    options = {
-        conditionals: true,
-        evaluate    : true,
-        booleans    : true
-    };
-    input: {
-        var a;
-        // compress these
-        a = condition ? true : false;
-        a = !condition ? true : false;
-        a = condition() ? true : false;
-
-        a = condition ? !0 : !1;
-        a = !condition ? !null : !2;
-        a = condition() ? !0 : !-3.5;
-
-        if (condition) {
-            a = true;
-        } else {
-            a = false;
-        }
-
-        if (condition) {
-            a = !0;
-        } else {
-            a = !1;
-        }
-
-        a = condition ? false : true;
-        a = !condition ? false : true;
-        a = condition() ? false : true;
-
-        a = condition ? !3 : !0;
-        a = !condition ? !2 : !0;
-        a = condition() ? !1 : !0;
-
-        if (condition) {
-            a = false;
-        } else {
-            a = true;
-        }
-
-        if (condition) {
-            a = !1;
-        } else {
-            a = !0;
-        }
-
         a = condition ? 1 : false;
-        a = !condition ? true : 0;
+        a = condition ? 0 : true;
         a = condition ? 1 : 0;
     }
-    expect: {
-        var a;
-        a = !!condition;
-        a = !condition;
-        a = !!condition();
-
-        a = !!condition;
-        a = !condition;
-        a = !!condition();
-
-        a = !!condition;
-        a = !!condition;
-
-        a = !condition;
-        a = !!condition;
-        a = !condition();
-
-        a = !condition;
-        a = !!condition;
-        a = !condition();
-
-        a = !condition;
-        a = !condition;
-
-        a = !!condition && 1;
-        a = !condition || 0;
-        a = condition ? 1 : 0;
-    }
-}
-
-cond_8c: {
-    options = {
-        conditionals: true,
-        evaluate    : false,
-        booleans    : false
-    };
-    input: {
-        var a;
-        // compress these
-        a = condition ? true : false;
-        a = !condition ? true : false;
-        a = condition() ? true : false;
-
-        a = condition ? !0 : !1;
-        a = !condition ? !null : !2;
-        a = condition() ? !0 : !-3.5;
-
-        if (condition) {
-            a = true;
-        } else {
-            a = false;
-        }
-
-        if (condition) {
-            a = !0;
-        } else {
-            a = !1;
-        }
-
-        a = condition ? false : true;
-        a = !condition ? false : true;
-        a = condition() ? false : true;
-
-        a = condition ? !3 : !0;
-        a = !condition ? !2 : !0;
-        a = condition() ? !1 : !0;
-
-        if (condition) {
-            a = false;
-        } else {
-            a = true;
-        }
-
-        if (condition) {
-            a = !1;
-        } else {
-            a = !0;
-        }
-
-        a = condition ? 1 : false;
-        a = !condition ? true : 0;
-        a = condition ? 1 : 0;
-    }
-    expect: {
-        var a;
-        a = !!condition;
-        a = !condition;
-        a = !!condition();
-
-        a = !!condition;
-        a = !condition;
-        a = !!condition() || !-3.5;
-
-        a = !!condition;
-        a = !!condition;
-
-        a = !condition;
-        a = !!condition;
-        a = !condition();
-
-        a = !condition;
-        a = !!condition;
-        a = !condition();
-
-        a = !condition;
-        a = !condition;
-
-        a = !!condition && 1;
-        a = !condition || 0;
-        a = condition ? 1 : 0;
-    }
-}
-
-ternary_boolean_consequent: {
-    options = {
-        collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    }
-    input: {
-        function f1() { return a == b ? true : x; }
-        function f2() { return a == b ? false : x; }
-        function f3() { return a < b ? !0 : x; }
-        function f4() { return a < b ? !1 : x; }
-        function f5() { return c ? !0 : x; }
-        function f6() { return c ? false : x; }
-        function f7() { return !c ? true : x; }
-        function f8() { return !c ? !1 : x; }
-    }
-    expect: {
-        function f1() { return a == b || x; }
-        function f2() { return a != b && x; }
-        function f3() { return a < b || x; }
-        function f4() { return !(a < b) && x; }
-        function f5() { return !!c || x; }
-        function f6() { return !c && x; }
-        function f7() { return !c || x; }
-        function f8() { return !!c && x; }
-    }
-}
-
-ternary_boolean_alternative: {
-    options = {
-        collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    }
-    input: {
-        function f1() { return a == b ? x : true; }
-        function f2() { return a == b ? x : false; }
-        function f3() { return a < b ? x : !0; }
-        function f4() { return a < b ? x : !1; }
-        function f5() { return c ? x : true; }
-        function f6() { return c ? x : !1; }
-        function f7() { return !c ? x : !0; }
-        function f8() { return !c ? x : false; }
-    }
-    expect: {
-        function f1() { return a != b || x; }
-        function f2() { return a == b && x; }
-        function f3() { return !(a < b) || x; }
-        function f4() { return a < b && x; }
-        function f5() { return !c || x; }
-        function f6() { return !!c && x; }
-        function f7() { return !!c || x; }
-        function f8() { return !c && x; }
-    }
-}
-
-trivial_boolean_ternary_expressions : {
-    options = {
-        conditionals: true,
-        evaluate    : true,
-        booleans    : true
-    };
-    input: {
-        f('foo' in m ? true  : false);
-        f('foo' in m ? false : true);
-
-        f(g       ? true : false);
-        f(foo()   ? true : false);
-        f("bar"   ? true : false);
-        f(5       ? true : false);
-        f(5.7     ? true : false);
-        f(x - y   ? true : false);
-
-        f(x == y  ? true : false);
-        f(x === y ?   !0 :    !1);
-        f(x < y   ?   !0 : false);
-        f(x <= y  ? true : false);
-        f(x > y   ? true :    !1);
-        f(x >= y  ?   !0 :    !1);
-
-        f(g       ? false : true);
-        f(foo()   ? false : true);
-        f("bar"   ? false : true);
-        f(5       ? false : true);
-        f(5.7     ? false : true);
-        f(x - y   ? false : true);
-
-        f(x == y  ?    !1 :   !0);
-        f(x === y ? false : true);
-
-        f(x < y   ? false : true);
-        f(x <= y  ? false :   !0);
-        f(x > y   ?    !1 : true);
-        f(x >= y  ?    !1 :   !0);
-    }
-    expect: {
-        f('foo' in m);
-        f(!('foo' in m));
-
-        f(!!g);
-        f(!!foo());
-        f(!0);
-        f(!0);
-        f(!0);
-        f(!!(x - y));
-
-        f(x == y);
-        f(x === y);
-        f(x < y);
-        f(x <= y);
-        f(x > y);
-        f(x >= y);
-
-        f(!g);
-        f(!foo());
-        f(!1);
-        f(!1);
-        f(!1);
-        f(!(x - y));
-
-        f(x != y);
-        f(x !== y);
-
-        f(!(x < y));
-        f(!(x <= y));
-        f(!(x > y));
-        f(!(x >= y));
-    }
-}
-
-issue_1154: {
-    options = {
-        conditionals: true,
-        evaluate    : true,
-        booleans    : true,
-        side_effects: true,
-    };
-    input: {
-        function f1(x) { return x ? -1 : -1; }
-        function f2(x) { return x ? +2 : +2; }
-        function f3(x) { return x ? ~3 : ~3; }
-        function f4(x) { return x ? !4 : !4; }
-        function f5(x) { return x ? void 5 : void 5; }
-        function f6(x) { return x ? typeof 6 : typeof 6; }
-
-        function g1() { return g() ? -1 : -1; }
-        function g2() { return g() ? +2 : +2; }
-        function g3() { return g() ? ~3 : ~3; }
-        function g4() { return g() ? !4 : !4; }
-        function g5() { return g() ? void 5 : void 5; }
-        function g6() { return g() ? typeof 6 : typeof 6; }
-    }
-    expect: {
-        function f1(x) { return -1; }
-        function f2(x) { return 2; }
-        function f3(x) { return -4; }
-        function f4(x) { return !1; }
-        function f5(x) { return; }
-        function f6(x) { return "number"; }
-
-        function g1() { return g(), -1; }
-        function g2() { return g(), 2; }
-        function g3() { return g(), -4; }
-        function g4() { return g(), !1; }
-        function g5() { return void g(); }
-        function g6() { return g(), "number"; }
-    }
-}
-
-no_evaluate: {
-    options = {
-        conditionals: true,
-        evaluate    : false,
-        side_effects: true,
-    }
-    input: {
-        function f(b) {
-            a = b ? !0 : !0;
-            a = b ? ~1 : ~1;
-            a = b ? -2 : -2;
-            a = b ? +3 : +3;
-        }
-    }
-    expect: {
-        function f(b) {
-            a = !0;
-            a = ~1;
-            a = -2;
-            a = +3;
-        }
-    }
-}
-
-equality_conditionals_false: {
-    options = {
-        conditionals: false,
-        sequences: true,
-    }
-    input: {
-        function f(a, b, c) {
-            console.log(
-                a == (b ? a : a),
-                a == (b ? a : c),
-                a != (b ? a : a),
-                a != (b ? a : c),
-                a === (b ? a : a),
-                a === (b ? a : c),
-                a !== (b ? a : a),
-                a !== (b ? a : c)
-            );
-        }
-        f(0, 0, 0);
-        f(0, true, 0);
-        f(1, 2, 3);
-        f(1, null, 3);
-        f(NaN);
-        f(NaN, "foo");
-    }
-    expect: {
-        function f(a, b, c) {
-            console.log(
-                a == (b ? a : a),
-                a == (b ? a : c),
-                a != (b ? a : a),
-                a != (b ? a : c),
-                a === (b ? a : a),
-                a === (b ? a : c),
-                a !== (b ? a : a),
-                a !== (b ? a : c)
-            );
-        }
-        f(0, 0, 0),
-        f(0, true, 0),
-        f(1, 2, 3),
-        f(1, null, 3),
-        f(NaN),
-        f(NaN, "foo");
-    }
-    expect_stdout: true
-}
-
-equality_conditionals_true: {
-    options = {
-        conditionals: true,
-        sequences: true,
-    }
-    input: {
-        function f(a, b, c) {
-            console.log(
-                a == (b ? a : a),
-                a == (b ? a : c),
-                a != (b ? a : a),
-                a != (b ? a : c),
-                a === (b ? a : a),
-                a === (b ? a : c),
-                a !== (b ? a : a),
-                a !== (b ? a : c)
-            );
-        }
-        f(0, 0, 0);
-        f(0, true, 0);
-        f(1, 2, 3);
-        f(1, null, 3);
-        f(NaN);
-        f(NaN, "foo");
-    }
-    expect: {
-        function f(a, b, c) {
-            console.log(
-                (b, a == a),
-                a == (b ? a : c),
-                (b, a != a),
-                a != (b ? a : c),
-                (b, a === a),
-                a === (b ? a : c),
-                (b, a !== a),
-                a !== (b ? a : c)
-            );
-        }
-        f(0, 0, 0),
-        f(0, true, 0),
-        f(1, 2, 3),
-        f(1, null, 3),
-        f(NaN),
-        f(NaN, "foo");
-    }
-    expect_stdout: true
-}
-
-issue_1645_1: {
-    options = {
-        conditionals: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        (b = a) ? a++ + (b += a) ? b += a : b += a : b ^= a;
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        (b = a) ? (a++ + (b += a), b += a) : b ^= a;
-        console.log(a,b);
-    }
-    expect_stdout: true
-}
-
-issue_1645_2: {
-    options = {
-        conditionals: true,
-    }
-    input: {
-        var a = 0;
-        function f() {
-            return a++;
-        }
-        f() ? a += 2 : a += 4;
-        console.log(a);
-    }
-    expect: {
-        var a = 0;
-        function f(){
-            return a++;
-        }
-        f() ? a += 2 : a += 4;
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-condition_symbol_matches_consequent: {
-    options = {
-        conditionals: true,
-    }
-    input: {
-        function foo(x, y) {
-            return x ? x : y;
-        }
-        function bar() {
-            return g ? g : h;
-        }
-        var g = 4;
-        var h = 5;
-        console.log(foo(3, null), foo(0, 7), foo(true, false), bar());
-    }
-    expect: {
-        function foo(x, y) {
-            return x || y;
-        }
-        function bar() {
-            return g || h;
-        }
-        var g = 4;
-        var h = 5;
-        console.log(foo(3, null), foo(0, 7), foo(true, false), bar());
-    }
-    expect_stdout: "3 7 true 4"
-}
-
-delete_conditional_1: {
-    options = {
-        booleans: true,
-        conditionals: true,
-        evaluate: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(delete (1 ? undefined : x));
-        console.log(delete (1 ? void 0 : x));
-        console.log(delete (1 ? Infinity : x));
-        console.log(delete (1 ? 1 / 0 : x));
-        console.log(delete (1 ? NaN : x));
-        console.log(delete (1 ? 0 / 0 : x));
-    }
-    expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-    }
-    expect_stdout: true
-}
-
-delete_conditional_2: {
-    options = {
-        booleans: true,
-        conditionals: true,
-        evaluate: true,
-        keep_infinity: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(delete (0 ? x : undefined));
-        console.log(delete (0 ? x : void 0));
-        console.log(delete (0 ? x : Infinity));
-        console.log(delete (0 ? x : 1 / 0));
-        console.log(delete (0 ? x : NaN));
-        console.log(delete (0 ? x : 0 / 0));
-    }
-    expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-    }
-    expect_stdout: true
-}
+}

test/compress/dead-code.js

@@ -1,415 +1,89 @@
-dead_code_1: {
-    options = {
-        dead_code: true
-    };
-    input: {
-        function f() {
-            a();
-            b();
-            x = 10;
-            return;
-            if (x) {
-                y();
-            }
-        }
-    }
-    expect: {
-        function f() {
-            a();
-            b();
-            x = 10;
-            return;
-        }
-    }
-}
-
-dead_code_2_should_warn: {
-    options = {
-        dead_code: true
-    };
-    input: {
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            // completely discarding the `if` would introduce some
-            // bugs.  UglifyJS v1 doesn't deal with this issue; in v2
-            // we copy any declarations to the upper scope.
-            if (x) {
-                y();
-                var x;
-                function g(){};
-                // but nested declarations should not be kept.
-                (function(){
-                    var q;
-                    function y(){};
-                })();
-            }
-        }
-        f();
-    }
-    expect: {
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            var x;
-            function g(){};
-        }
-        f();
-    }
-    expect_stdout: true
-    node_version: "<=4"
-}
-
-dead_code_2_should_warn_strict: {
-    options = {
-        dead_code: true
-    };
-    input: {
-        "use strict";
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            // completely discarding the `if` would introduce some
-            // bugs.  UglifyJS v1 doesn't deal with this issue; in v2
-            // we copy any declarations to the upper scope.
-            if (x) {
-                y();
-                var x;
-                function g(){};
-                // but nested declarations should not be kept.
-                (function(){
-                    var q;
-                    function y(){};
-                })();
-            }
-        }
-        f();
-    }
-    expect: {
-        "use strict";
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            var x;
-        }
-        f();
-    }
-    expect_stdout: true
-    node_version: ">=4"
-}
-
-dead_code_constant_boolean_should_warn_more: {
-    options = {
-        dead_code    : true,
-        loops        : true,
-        booleans     : true,
-        conditionals : true,
-        evaluate     : true,
-        side_effects : true,
-    };
-    input: {
-        while (!((foo && bar) || (x + "0"))) {
-            console.log("unreachable");
-            var foo;
-            function bar() {}
-        }
-        for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
-            asdf();
-            foo();
-            var moo;
-        }
-        bar();
-    }
-    expect: {
-        var foo;
-        function bar() {}
-        // nothing for the while
-        // as for the for, it should keep:
-        var x = 10, y;
-        var moo;
-        bar();
-    }
-    expect_stdout: true
-    node_version: "<=4"
-}
-
-dead_code_constant_boolean_should_warn_more_strict: {
-    options = {
-        dead_code    : true,
-        loops        : true,
-        booleans     : true,
-        conditionals : true,
-        evaluate     : true,
-        side_effects : true,
-    };
-    input: {
-        "use strict";
-        while (!((foo && bar) || (x + "0"))) {
-            console.log("unreachable");
-            var foo;
-            function bar() {}
-        }
-        for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
-            asdf();
-            foo();
-            var moo;
-        }
-        bar();
-    }
-    expect: {
-        "use strict";
-        var foo;
-        // nothing for the while
-        // as for the for, it should keep:
-        var x = 10, y;
-        var moo;
-        bar();
-    }
-    expect_stdout: true
-    node_version: ">=4"
-}
-
-try_catch_finally: {
-    options = {
-        conditionals: true,
-        dead_code: true,
-        evaluate: true,
-    }
-    input: {
-        var a = 1;
-        !function() {
-            try {
-                if (false) throw x;
-            } catch (a) {
-                var a = 2;
-                console.log("FAIL");
-            } finally {
-                a = 3;
-                console.log("PASS");
-            }
-        }();
-        try {
-            console.log(a);
-        } finally {
-        }
-    }
-    expect: {
-        var a = 1;
-        !function() {
-            var a;
-            a = 3;
-            console.log("PASS");
-        }();
-        try {
-            console.log(a);
-        } finally {
-        }
-    }
-    expect_stdout: [
-        "PASS",
-        "1",
-    ]
-}
-
-accessor: {
-    options = {
-        side_effects: true,
-    }
-    input: {
-        ({
-            get a() {},
-            set a(v){
-                this.b = 2;
-            },
-            b: 1
-        });
-    }
-    expect: {}
-}
-
-issue_2233_1: {
-    options = {
-        pure_getters: "strict",
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        Array.isArray;
-        Boolean;
-        console.log;
-        Date;
-        decodeURI;
-        decodeURIComponent;
-        encodeURI;
-        encodeURIComponent;
-        Error.name;
-        escape;
-        eval;
-        EvalError;
-        Function.length;
-        isFinite;
-        isNaN;
-        JSON;
-        Math.random;
-        Number.isNaN;
-        parseFloat;
-        parseInt;
-        RegExp;
-        Object.defineProperty;
-        String.fromCharCode;
-        RangeError;
-        ReferenceError;
-        SyntaxError;
-        TypeError;
-        unescape;
-        URIError;
-    }
-    expect: {}
-    expect_stdout: true
-}
-
-global_timeout_and_interval_symbols: {
-    options = {
-        pure_getters: "strict",
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        // These global symbols do not exist in the test sandbox
-        // and must be tested separately.
-        clearInterval;
-        clearTimeout;
-        setInterval;
-        setTimeout;
-    }
-    expect: {}
-}
-
-issue_2233_2: {
-    options = {
-        pure_getters: "strict",
-        reduce_vars: true,
-        side_effects: true,
-        unsafe: true,
-        unused: true,
-    }
-    input: {
-        var RegExp;
-        Array.isArray;
-        RegExp;
-        UndeclaredGlobal;
-        function foo() {
-            var Number;
-            AnotherUndeclaredGlobal;
-            Math.sin;
-            Number.isNaN;
-        }
-    }
-    expect: {
-        var RegExp;
-        UndeclaredGlobal;
-        function foo() {
-            var Number;
-            AnotherUndeclaredGlobal;
-            Number.isNaN;
-        }
-    }
-}
-
-issue_2233_3: {
-    options = {
-        pure_getters: "strict",
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-        unsafe: true,
-        unused: true,
-    }
-    input: {
-        var RegExp;
-        Array.isArray;
-        RegExp;
-        UndeclaredGlobal;
-        function foo() {
-            var Number;
-            AnotherUndeclaredGlobal;
-            Math.sin;
-            Number.isNaN;
-        }
-    }
-    expect: {
-        UndeclaredGlobal;
-    }
-}
-
-global_fns: {
-    options = {
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        Boolean(1, 2);
-        decodeURI(1, 2);
-        decodeURIComponent(1, 2);
-        Date(1, 2);
-        encodeURI(1, 2);
-        encodeURIComponent(1, 2);
-        Error(1, 2);
-        escape(1, 2);
-        EvalError(1, 2);
-        isFinite(1, 2);
-        isNaN(1, 2);
-        Number(1, 2);
-        Object(1, 2);
-        parseFloat(1, 2);
-        parseInt(1, 2);
-        RangeError(1, 2);
-        ReferenceError(1, 2);
-        String(1, 2);
-        SyntaxError(1, 2);
-        TypeError(1, 2);
-        unescape(1, 2);
-        URIError(1, 2);
-        try {
-            Function(1, 2);
-        } catch (e) {
-            console.log(e.name);
-        }
-        try {
-            RegExp(1, 2);
-        } catch (e) {
-            console.log(e.name);
-        }
-        try {
-            Array(NaN);
-        } catch (e) {
-            console.log(e.name);
-        }
-    }
-    expect: {
-        try {
-            Function(1, 2);
-        } catch (e) {
-            console.log(e.name);
-        }
-        try {
-            RegExp(1, 2);
-        } catch (e) {
-            console.log(e.name);
-        }
-        try {
-            Array(NaN);
-        } catch (e) {
-            console.log(e.name);
-        }
-    }
-    expect_stdout: [
-        "SyntaxError",
-        "SyntaxError",
-        "RangeError",
-    ]
-}
+dead_code_1: {
+    options = {
+        dead_code: true
+    };
+    input: {
+        function f() {
+            a();
+            b();
+            x = 10;
+            return;
+            if (x) {
+                y();
+            }
+        }
+    }
+    expect: {
+        function f() {
+            a();
+            b();
+            x = 10;
+            return;
+        }
+    }
+}
+
+dead_code_2_should_warn: {
+    options = {
+        dead_code: true
+    };
+    input: {
+        function f() {
+            g();
+            x = 10;
+            throw "foo";
+            // completely discarding the `if` would introduce some
+            // bugs.  UglifyJS v1 doesn't deal with this issue; in v2
+            // we copy any declarations to the upper scope.
+            if (x) {
+                y();
+                var x;
+                function g(){};
+                // but nested declarations should not be kept.
+                (function(){
+                    var q;
+                    function y(){};
+                })();
+            }
+        }
+    }
+    expect: {
+        function f() {
+            g();
+            x = 10;
+            throw "foo";
+            var x;
+            function g(){};
+        }
+    }
+}
+
+dead_code_constant_boolean_should_warn_more: {
+    options = {
+        dead_code    : true,
+        loops        : true,
+        booleans     : true,
+        conditionals : true,
+        evaluate     : true
+    };
+    input: {
+        while (!((foo && bar) || (x + "0"))) {
+            console.log("unreachable");
+            var foo;
+            function bar() {}
+        }
+        for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
+            asdf();
+            foo();
+            var moo;
+        }
+    }
+    expect: {
+        var foo;
+        function bar() {}
+        // nothing for the while
+        // as for the for, it should keep:
+        var x = 10, y;
+        var moo;
+    }
+}

test/compress/drop-console.js

@@ -1,24 +1,24 @@
-drop_console_1: {
-    options = {};
-    input: {
-        console.log('foo');
-        console.log.apply(console, arguments);
-    }
-    expect: {
-        console.log('foo');
-        console.log.apply(console, arguments);
-    }
-}
-
-drop_console_2: {
-    options = { drop_console: true };
-    input: {
-        console.log('foo');
-        console.log.apply(console, arguments);
-    }
-    expect: {
-        // with regular compression these will be stripped out as well
-        void 0;
-        void 0;
-    }
-}
+drop_console_1: {
+    options = {};
+    input: {
+        console.log('foo');
+        console.log.apply(console, arguments);
+    }
+    expect: {
+        console.log('foo');
+        console.log.apply(console, arguments);
+    }
+}
+
+drop_console_1: {
+    options = { drop_console: true };
+    input: {
+        console.log('foo');
+        console.log.apply(console, arguments);
+    }
+    expect: {
+        // with regular compression these will be stripped out as well
+        void 0;
+        void 0;
+    }
+}

test/compress/functions.js

@@ -1,510 +0,0 @@
-non_ascii_function_identifier_name: {
-    input: {
-        function fooλ(δλ) {}
-        function λ(δλ) {}
-        (function λ(δλ) {})()
-    }
-    expect_exact: "function fooλ(δλ){}function λ(δλ){}(function λ(δλ){})();"
-}
-
-iifes_returning_constants_keep_fargs_true: {
-    options = {
-        keep_fargs    : true,
-        side_effects  : true,
-        evaluate      : true,
-        unused        : true,
-        dead_code     : true,
-        conditionals  : true,
-        comparisons   : true,
-        booleans      : true,
-        if_return     : true,
-        join_vars     : true,
-        reduce_vars   : true,
-        cascade       : true,
-        inline        : true,
-    }
-    input: {
-        (function(){ return -1.23; }());
-        console.log( function foo(){ return "okay"; }() );
-        console.log( function foo(x, y, z){ return 123; }() );
-        console.log( function(x, y, z){ return z; }() );
-        console.log( function(x, y, z){ if (x) return y; return z; }(1, 2, 3) );
-        console.log( function(x, y){ return x * y; }(2, 3) );
-        console.log( function(x, y){ return x * y; }(2, 3, a(), b()) );
-    }
-    expect: {
-        console.log("okay");
-        console.log(123);
-        console.log(void 0);
-        console.log(2);
-        console.log(6);
-        console.log((a(), b(), 6));
-    }
-    expect_stdout: true
-}
-
-iifes_returning_constants_keep_fargs_false: {
-    options = {
-        keep_fargs    : false,
-        side_effects  : true,
-        evaluate      : true,
-        unused        : true,
-        dead_code     : true,
-        conditionals  : true,
-        comparisons   : true,
-        booleans      : true,
-        if_return     : true,
-        join_vars     : true,
-        reduce_vars   : true,
-        cascade       : true,
-        inline        : true,
-    }
-    input: {
-        (function(){ return -1.23; }());
-        console.log( function foo(){ return "okay"; }() );
-        console.log( function foo(x, y, z){ return 123; }() );
-        console.log( function(x, y, z){ return z; }() );
-        console.log( function(x, y, z){ if (x) return y; return z; }(1, 2, 3) );
-        console.log( function(x, y){ return x * y; }(2, 3) );
-        console.log( function(x, y){ return x * y; }(2, 3, a(), b()) );
-    }
-    expect: {
-        console.log("okay");
-        console.log(123);
-        console.log(void 0);
-        console.log(2);
-        console.log(6);
-        console.log((a(), b(), 6));
-    }
-    expect_stdout: true
-}
-
-issue_485_crashing_1530: {
-    options = {
-        conditionals: true,
-        dead_code: true,
-        evaluate: true,
-        inline: true,
-    }
-    input: {
-        (function(a) {
-            if (true) return;
-            var b = 42;
-        })(this);
-    }
-    expect: {
-        this, void 0;
-    }
-}
-
-issue_1841_1: {
-    options = {
-        keep_fargs: false,
-        pure_getters: "strict",
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        var b = 10;
-        !function(arg) {
-            for (var key in "hi")
-                var n = arg.baz, n = [ b = 42 ];
-        }(--b);
-        console.log(b);
-    }
-    expect: {
-        var b = 10;
-        !function() {
-            for (var key in "hi")
-                b = 42;
-        }(--b);
-        console.log(b);
-    }
-    expect_exact: "42"
-}
-
-issue_1841_2: {
-    options = {
-        keep_fargs: false,
-        pure_getters: false,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        var b = 10;
-        !function(arg) {
-            for (var key in "hi")
-                var n = arg.baz, n = [ b = 42 ];
-        }(--b);
-        console.log(b);
-    }
-    expect: {
-        var b = 10;
-        !function(arg) {
-            for (var key in "hi")
-                arg.baz, b = 42;
-        }(--b);
-        console.log(b);
-    }
-    expect_exact: "42"
-}
-
-function_returning_constant_literal: {
-    options = {
-        reduce_vars: true,
-        unsafe: true,
-        toplevel: true,
-        evaluate: true,
-        cascade: true,
-        unused: true,
-        inline: true,
-    }
-    input: {
-        function greeter() {
-            return { message: 'Hello there' };
-        }
-        var greeting = greeter();
-        console.log(greeting.message);
-    }
-    expect: {
-        console.log("Hello there");
-    }
-    expect_stdout: "Hello there"
-}
-
-hoist_funs: {
-    options = {
-        hoist_funs: true,
-    }
-    input: {
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            function f() {}
-            console.log(5, typeof f, typeof g);
-        }
-        function g() {}
-        console.log(6, typeof f, typeof g);
-    }
-    expect: {
-        function f() {}
-        function g() {}
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            console.log(5, typeof f, typeof g);
-        }
-        console.log(6, typeof f, typeof g);
-    }
-    expect_stdout: [
-        "1 'function' 'function'",
-        "2 'function' 'function'",
-        "4 'function' 'function'",
-        "5 'function' 'function'",
-        "6 'function' 'function'",
-    ]
-    node_version: "<=4"
-}
-
-hoist_funs_strict: {
-    options = {
-        hoist_funs: true,
-    }
-    input: {
-        "use strict";
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            function f() {}
-            console.log(5, typeof f, typeof g);
-        }
-        function g() {}
-        console.log(6, typeof f, typeof g);
-    }
-    expect: {
-        "use strict";
-        function g() {}
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            function f() {}
-            console.log(5, typeof f, typeof g);
-        }
-        console.log(6, typeof f, typeof g);
-    }
-    expect_stdout: [
-        "1 'undefined' 'function'",
-        "2 'undefined' 'function'",
-        "4 'function' 'function'",
-        "5 'function' 'function'",
-        "6 'undefined' 'function'",
-    ]
-    node_version: ">=4"
-}
-
-issue_203: {
-    options = {
-        keep_fargs: false,
-        side_effects: true,
-        unsafe_Func: true,
-        unused: true,
-    }
-    input: {
-        var m = {};
-        var fn = Function("require", "module", "exports", "module.exports = 42;");
-        fn(null, m, m.exports);
-        console.log(m.exports);
-    }
-    expect: {
-        var m = {};
-        var fn = Function("n,o", "o.exports=42");
-        fn(null, m, m.exports);
-        console.log(m.exports);
-    }
-    expect_stdout: "42"
-}
-
-no_webkit: {
-    beautify = {
-        webkit: false,
-    }
-    input: {
-        console.log(function() {
-            1 + 1;
-        }.a = 1);
-    }
-    expect_exact: "console.log(function(){1+1}.a=1);"
-    expect_stdout: "1"
-}
-
-webkit: {
-    beautify = {
-        webkit: true,
-    }
-    input: {
-        console.log(function() {
-            1 + 1;
-        }.a = 1);
-    }
-    expect_exact: "console.log((function(){1+1}).a=1);"
-    expect_stdout: "1"
-}
-
-issue_2084: {
-    options = {
-        collapse_vars: true,
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        passes: 2,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var c = 0;
-        !function() {
-            !function(c) {
-                c = 1 + c;
-                var c = 0;
-                function f14(a_1) {
-                    if (c = 1 + c, 0 !== 23..toString())
-                        c = 1 + c, a_1 && (a_1[0] = 0);
-                }
-                f14();
-            }(-1);
-        }();
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        !function(c) {
-            c = 1 + c,
-            c = 1 + (c = 0),
-            0 !== 23..toString() && (c = 1 + c);
-        }(-1),
-        console.log(c);
-    }
-    expect_stdout: "0"
-}
-
-issue_2097: {
-    options = {
-        negate_iife: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            try {
-                throw 0;
-            } catch (e) {
-                console.log(arguments[0]);
-            }
-        }
-        f(1);
-    }
-    expect: {
-        !function() {
-            try {
-                throw 0;
-            } catch (e) {
-                console.log(arguments[0]);
-            }
-        }(1);
-    }
-    expect_stdout: "1"
-}
-
-issue_2101: {
-    options = {
-        inline: true,
-    }
-    input: {
-        a = {};
-        console.log(function() {
-            return function() {
-                return this.a;
-            }();
-        }() === function() {
-            return a;
-        }());
-    }
-    expect: {
-        a = {};
-        console.log(function() {
-            return this.a;
-        }() === a);
-    }
-    expect_stdout: "true"
-}
-
-inner_ref: {
-    options = {
-        inline: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(a) {
-            return function() {
-                return a;
-            }();
-        }(1), function(a) {
-            return function(a) {
-                return a;
-            }();
-        }(2));
-    }
-    expect: {
-        console.log(function(a) {
-            return a;
-        }(1), function(a) {
-            return a;
-        }());
-    }
-    expect_stdout: "1 undefined"
-}
-
-issue_2107: {
-    options = {
-        cascade: true,
-        collapse_vars: true,
-        inline: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var c = 0;
-        !function() {
-            c++;
-        }(c++ + new function() {
-            this.a = 0;
-            var a = (c = c + 1) + (c = 1 + c);
-            return c++ + a;
-        }());
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        c++, new function() {
-            this.a = 0, c = 1 + (c += 1), c++;
-        }(), c++, console.log(c);
-    }
-    expect_stdout: "5"
-}
-
-issue_2114_1: {
-    options = {
-        collapse_vars: true,
-        if_return: true,
-        inline: true,
-        keep_fargs: false,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var c = 0;
-        !function(a) {
-            a = 0;
-        }([ {
-            0: c = c + 1,
-            length: c = 1 + c
-        }, typeof void function a() {
-            var b = function f1(a) {
-            }(b && (b.b += (c = c + 1, 0)));
-        }() ]);
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        c = 1 + (c += 1), function() {
-            var b = void (b && (b.b += (c += 1, 0)));
-        }();
-        console.log(c);
-    }
-    expect_stdout: "2"
-}
-
-issue_2114_2: {
-    options = {
-        collapse_vars: true,
-        if_return: true,
-        inline: true,
-        keep_fargs: false,
-        passes: 2,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var c = 0;
-        !function(a) {
-            a = 0;
-        }([ {
-            0: c = c + 1,
-            length: c = 1 + c
-        }, typeof void function a() {
-            var b = function f1(a) {
-            }(b && (b.b += (c = c + 1, 0)));
-        }() ]);
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        c = 1 + (c += 1), function() {
-            var b = void (b && (b.b += (c += 1, 0)));
-        }();
-        console.log(c);
-    }
-    expect_stdout: "2"
-}

test/compress/global_defs.js

@@ -1,198 +0,0 @@
-must_replace: {
-    options = {
-        global_defs: {
-            D: "foo bar",
-        }
-    }
-    input: {
-        console.log(D);
-    }
-    expect: {
-        console.log("foo bar");
-    }
-}
-
-keyword: {
-    options = {
-        global_defs: {
-            undefined: 0,
-            NaN: 1,
-            Infinity: 2,
-        },
-    }
-    input: {
-        console.log(undefined, NaN, Infinity);
-    }
-    expect: {
-        console.log(0, 1, 2);
-    }
-}
-
-object: {
-    options = {
-        evaluate: true,
-        global_defs: {
-            CONFIG: {
-                DEBUG: [ 0 ],
-                VALUE: 42,
-            },
-        },
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        function f(CONFIG) {
-            // CONFIG not global - do not replace
-            return CONFIG.VALUE;
-        }
-        function g() {
-            var CONFIG = { VALUE: 1 };
-            // CONFIG not global - do not replace
-            return CONFIG.VALUE;
-        }
-        function h() {
-            return CONFIG.VALUE;
-        }
-        if (CONFIG.DEBUG[0])
-            console.debug("foo");
-    }
-    expect: {
-        function f(CONFIG) {
-            return CONFIG.VALUE;
-        }
-        function g() {
-            var CONFIG = { VALUE: 1 };
-            return CONFIG.VALUE;
-        }
-        function h() {
-            return 42;
-        }
-        if (0)
-            console.debug("foo");
-    }
-}
-
-expanded: {
-    options = {
-        global_defs: {
-            "CONFIG.DEBUG": [ 0 ],
-            "CONFIG.VALUE": 42,
-        },
-    }
-    input: {
-        function f(CONFIG) {
-            // CONFIG not global - do not replace
-            return CONFIG.VALUE;
-        }
-        function g() {
-            var CONFIG = { VALUE: 1 };
-            // CONFIG not global - do not replace
-            return CONFIG.VALUE;
-        }
-        function h() {
-            return CONFIG.VALUE;
-        }
-        if (CONFIG.DEBUG[0])
-            console.debug("foo");
-    }
-    expect: {
-        function f(CONFIG) {
-            return CONFIG.VALUE;
-        }
-        function g() {
-            var CONFIG = { VALUE: 1 };
-            return CONFIG.VALUE;
-        }
-        function h() {
-            return 42;
-        }
-        if ([0][0])
-            console.debug("foo");
-    }
-}
-
-mixed: {
-    options = {
-        evaluate: true,
-        global_defs: {
-            "CONFIG.VALUE": 42,
-            "FOO.BAR": "moo",
-        },
-        properties: true,
-    }
-    input: {
-        var FOO = { BAR: 0 };
-        console.log(FOO.BAR);
-        console.log(++CONFIG.DEBUG);
-        console.log(++CONFIG.VALUE);
-        console.log(++CONFIG["VAL" + "UE"]);
-        console.log(++DEBUG[CONFIG.VALUE]);
-        CONFIG.VALUE.FOO = "bar";
-        console.log(CONFIG);
-    }
-    expect: {
-        var FOO = { BAR: 0 };
-        console.log("moo");
-        console.log(++CONFIG.DEBUG);
-        console.log(++CONFIG.VALUE);
-        console.log(++CONFIG.VALUE);
-        console.log(++DEBUG[42]);
-        CONFIG.VALUE.FOO = "bar";
-        console.log(CONFIG);
-    }
-    expect_warnings: [
-        'WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:127,22]',
-        'WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:128,22]',
-        'WARN: global_defs CONFIG.VALUE redefined [test/compress/global_defs.js:130,8]',
-    ]
-}
-
-issue_1801: {
-    options = {
-        booleans: true,
-        global_defs: {
-            "CONFIG.FOO.BAR": true,
-        },
-    }
-    input: {
-        console.log(CONFIG.FOO.BAR);
-    }
-    expect: {
-        console.log(!0);
-    }
-}
-
-issue_1986: {
-    options = {
-        global_defs: {
-            "@alert": "console.log",
-        },
-    }
-    input: {
-        alert(42);
-    }
-    expect: {
-        console.log(42);
-    }
-}
-
-issue_2167: {
-    options = {
-        conditionals: true,
-        dead_code: true,
-        evaluate: true,
-        global_defs: {
-            "@isDevMode": "function(){}",
-        },
-        side_effects: true,
-    }
-    input: {
-        if (isDevMode()) {
-            greetOverlord();
-        }
-        doWork();
-    }
-    expect: {
-        doWork();
-    }
-}

test/compress/hoist_vars.js

@@ -1,111 +0,0 @@
-statements: {
-    options = {
-        hoist_funs: false,
-        hoist_vars: true,
-    }
-    input: {
-        function f() {
-            var a = 1;
-            var b = 2;
-            var c = 3;
-            function g() {}
-            return g(a, b, c);
-        }
-    }
-    expect: {
-        function f() {
-            var a = 1, b = 2, c = 3;
-            function g() {}
-            return g(a, b, c);
-        }
-    }
-}
-
-statements_funs: {
-    options = {
-        hoist_funs: true,
-        hoist_vars: true,
-    }
-    input: {
-        function f() {
-            var a = 1;
-            var b = 2;
-            var c = 3;
-            function g() {}
-            return g(a, b, c);
-        }
-    }
-    expect: {
-        function f() {
-            function g() {}
-            var a = 1, b = 2, c = 3;
-            return g(a, b, c);
-        }
-    }
-}
-
-sequences: {
-    options = {
-        hoist_funs: false,
-        hoist_vars: true,
-    }
-    input: {
-        function f() {
-            var a = 1, b = 2;
-            function g() {}
-            var c = 3;
-            return g(a, b, c);
-        }
-    }
-    expect: {
-        function f() {
-            var c, a = 1, b = 2;
-            function g() {}
-            c = 3;
-            return g(a, b, c);
-        }
-    }
-}
-
-sequences_funs: {
-    options = {
-        hoist_funs: true,
-        hoist_vars: true,
-    }
-    input: {
-        function f() {
-            var a = 1, b = 2;
-            function g() {}
-            var c = 3;
-            return g(a, b, c);
-        }
-    }
-    expect: {
-        function f() {
-            function g() {}
-            var a = 1, b = 2, c = 3;
-            return g(a, b, c);
-        }
-    }
-}
-
-issue_2295: {
-    options = {
-        collapse_vars: true,
-        hoist_vars: true,
-    }
-    input: {
-        function foo(o) {
-            var a = o.a;
-            if (a) return a;
-            var a = 1;
-        }
-    }
-    expect: {
-        function foo(o) {
-            var a = o.a;
-            if (a) return a;
-            a = 1;
-        }
-    }
-}

test/compress/html_comments.js

@@ -1,55 +0,0 @@
-html_comment_in_expression: {
-    input: {
-        function f(a, b, x, y) { return a < !--b && x-- > y; }
-    }
-    expect_exact: "function f(a,b,x,y){return a< !--b&&x-- >y}";
-}
-
-html_comment_in_less_than: {
-    input: {
-        function f(a, b) { return a < !--b; }
-    }
-    expect_exact: "function f(a,b){return a< !--b}";
-}
-
-html_comment_in_left_shift: {
-    input: {
-        function f(a, b) { return a << !--b; }
-    }
-    expect_exact: "function f(a,b){return a<< !--b}";
-}
-
-html_comment_in_right_shift: {
-    input: {
-        function f(a, b) { return a-- >> b; }
-    }
-    expect_exact: "function f(a,b){return a-- >>b}";
-}
-
-html_comment_in_zero_fill_right_shift: {
-    input: {
-        function f(a, b) { return a-- >>> b; }
-    }
-    expect_exact: "function f(a,b){return a-- >>>b}";
-}
-
-html_comment_in_greater_than: {
-    input: {
-        function f(a, b) { return a-- > b; }
-    }
-    expect_exact: "function f(a,b){return a-- >b}";
-}
-
-html_comment_in_greater_than_or_equal: {
-    input: {
-        function f(a, b) { return a-- >= b; }
-    }
-    expect_exact: "function f(a,b){return a-- >=b}";
-}
-
-html_comment_in_string_literal: {
-    input: {
-        function f() { return "<!--HTML-->comment in<!--string literal-->"; }
-    }
-    expect_exact: 'function f(){return"\\x3c!--HTML--\\x3ecomment in\\x3c!--string literal--\\x3e"}';
-}

test/compress/if_return.js

@@ -1,328 +0,0 @@
-if_return_1: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x) {
-            if (x) {
-                return true;
-            }
-        }
-    }
-    expect: {
-        function f(x){if(x)return!0}
-    }
-}
-
-if_return_2: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x, y) {
-            if (x)
-                return 3;
-            if (y)
-                return c();
-        }
-    }
-    expect: {
-        function f(x,y){return x?3:y?c():void 0}
-    }
-}
-
-if_return_3: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x) {
-            a();
-            if (x) {
-                b();
-                return false;
-            }
-        }
-    }
-    expect: {
-        function f(x){if(a(),x)return b(),!1}
-    }
-}
-
-if_return_4: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x, y) {
-            a();
-            if (x) return 3;
-            b();
-            if (y) return c();
-        }
-    }
-    expect: {
-        function f(x,y){return a(),x?3:(b(),y?c():void 0)}
-    }
-}
-
-if_return_5: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f() {
-            if (x)
-                return;
-            return 7;
-            if (y)
-                return j;
-        }
-    }
-    expect: {
-        function f(){if(!x)return 7}
-    }
-}
-
-if_return_6: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x) {
-          return x ? true : void 0;
-          return y;
-        }
-    }
-    expect: {
-        // suboptimal
-        function f(x){return!!x||void 0}
-    }
-}
-
-if_return_7: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function f(x) {
-            if (x) {
-                return true;
-            }
-            foo();
-            bar();
-        }
-    }
-    expect: {
-        function f(x){if(x)return!0;foo(),bar()}
-    }
-}
-
-if_return_8: {
-    options = {
-        if_return:     true,
-        sequences:     true,
-        conditionals:  true,
-        side_effects : true,
-    }
-    input: {
-        function f(e) {
-            if (2 == e) return foo();
-            if (3 == e) return bar();
-            if (4 == e) return baz();
-            fail(e);
-        }
-
-        function g(e) {
-            if (a(e)) return foo();
-            if (b(e)) return bar();
-            if (c(e)) return baz();
-            fail(e);
-        }
-
-        function h(e) {
-            if (a(e)) return foo();
-            else if (b(e)) return bar();
-            else if (c(e)) return baz();
-            else fail(e);
-        }
-
-        function i(e) {
-            if (a(e)) return foo();
-            else if (b(e)) return bar();
-            else if (c(e)) return baz();
-            fail(e);
-        }
-    }
-    expect: {
-        function f(e){return 2==e?foo():3==e?bar():4==e?baz():void fail(e)}
-        function g(e){return a(e)?foo():b(e)?bar():c(e)?baz():void fail(e)}
-        function h(e){return a(e)?foo():b(e)?bar():c(e)?baz():void fail(e)}
-        function i(e){return a(e)?foo():b(e)?bar():c(e)?baz():void fail(e)}
-    }
-}
-
-issue_1089: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : true,
-        comparisons  : true,
-        evaluate     : true,
-        booleans     : true,
-        unused       : true,
-        side_effects : true,
-        dead_code    : true,
-    }
-    input: {
-        function x() {
-            var f = document.getElementById("fname");
-            if (f.files[0].size > 12345) {
-                alert("alert");
-                f.focus();
-                return false;
-            }
-        }
-    }
-    expect: {
-        function x() {
-            var f = document.getElementById("fname");
-            if (f.files[0].size > 12345)
-                return alert("alert"), f.focus(), !1;
-        }
-    }
-}
-
-issue_1437: {
-    options = {
-        if_return    : true,
-        sequences    : true,
-        conditionals : false
-    }
-    input: {
-        function x() {
-            if (a())
-                return b();
-            if (c())
-                return d();
-            else
-                e();
-            f();
-        }
-    }
-    expect: {
-        function x() {
-            if (a())
-                return b();
-            if (c())
-                return d();
-            else
-                e()
-            f();
-        }
-    }
-}
-
-issue_1437_conditionals: {
-    options = {
-        conditionals : true,
-        if_return    : true,
-        sequences    : true
-    }
-    input: {
-        function x() {
-            if (a())
-                return b();
-            if (c())
-                return d();
-            else
-                e();
-            f();
-        }
-    }
-    expect: {
-        function x() {
-            return a() ? b() : c() ? d() : (e(), f(), void 0);
-        }
-    }
-}
-
-issue_512: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function a() {
-            if (b()) {
-                c();
-                return;
-            }
-            throw e;
-        }
-    }
-    expect: {
-        function a() {
-            if (!b()) throw e;
-            c();
-        }
-    }
-}

test/compress/issue-1034.js

@@ -1,256 +0,0 @@
-non_hoisted_function_after_return: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true
-    }
-    input: {
-        function foo(x) {
-            if (x) {
-                return bar();
-                not_called1();
-            } else {
-                return baz();
-                not_called2();
-            }
-            function bar() { return 7; }
-            return not_reached;
-            function UnusedFunction() {}
-            function baz() { return 8; }
-        }
-    }
-    expect: {
-        function foo(x) {
-            return x ? bar() : baz();
-            function bar() { return 7 }
-            function baz() { return 8 }
-        }
-    }
-    expect_warnings: [
-        'WARN: Dropping unreachable code [test/compress/issue-1034.js:11,16]',
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:14,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:17,12]",
-        "WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:18,21]"
-    ]
-}
-
-non_hoisted_function_after_return_2a: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true,
-        collapse_vars: false, passes: 2, warnings: "verbose"
-    }
-    input: {
-        function foo(x) {
-            if (x) {
-                return bar(1);
-                var a = not_called(1);
-            } else {
-                return bar(2);
-                var b = not_called(2);
-            }
-            var c = bar(3);
-            function bar(x) { return 7 - x; }
-            function nope() {}
-            return b || c;
-        }
-    }
-    expect: {
-        function foo(x) {
-            return bar(x ? 1 : 2);
-            function bar(x) {
-                return 7 - x;
-            }
-        }
-    }
-    expect_warnings: [
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:48,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:48,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:51,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:51,16]",
-        "WARN: Dropping unused variable a [test/compress/issue-1034.js:48,20]",
-        "WARN: Dropping unused function nope [test/compress/issue-1034.js:55,21]",
-        "WARN: pass 0: last_count: Infinity, count: 37",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:53,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:53,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:56,12]",
-        "WARN: Dropping unused variable b [test/compress/issue-1034.js:51,20]",
-        "WARN: Dropping unused variable c [test/compress/issue-1034.js:53,16]",
-        "WARN: pass 1: last_count: 37, count: 18",
-    ]
-}
-
-non_hoisted_function_after_return_2b: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true,
-        collapse_vars: false
-    }
-    input: {
-        function foo(x) {
-            if (x) {
-                return bar(1);
-            } else {
-                return bar(2);
-                var b;
-            }
-            var c = bar(3);
-            function bar(x) {
-                return 7 - x;
-            }
-            return b || c;
-        }
-    }
-    expect: {
-        function foo(x) {
-            return bar(x ? 1 : 2);
-            function bar(x) { return 7 - x; }
-        }
-    }
-    expect_warnings: [
-        // duplicate warnings no longer emitted
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:97,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:97,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:99,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:99,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:103,12]",
-    ]
-}
-
-non_hoisted_function_after_return_strict: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true
-    }
-    input: {
-        "use strict";
-        function foo(x) {
-            if (x) {
-                return bar();
-                not_called1();
-            } else {
-                return baz();
-                not_called2();
-            }
-            function bar() { return 7; }
-            return not_reached;
-            function UnusedFunction() {}
-            function baz() { return 8; }
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect: {
-        "use strict";
-        function foo(x) {
-            return x ? bar() : baz();
-            function bar() { return 7 }
-            function baz() { return 8 }
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect_stdout: "8 7"
-    expect_warnings: [
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:133,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:136,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:139,12]",
-        "WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:140,21]",
-    ]
-}
-
-non_hoisted_function_after_return_2a_strict: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true,
-        collapse_vars: false, passes: 2, warnings: "verbose"
-    }
-    input: {
-        "use strict";
-        function foo(x) {
-            if (x) {
-                return bar(1);
-                var a = not_called(1);
-            } else {
-                return bar(2);
-                var b = not_called(2);
-            }
-            var c = bar(3);
-            function bar(x) { return 7 - x; }
-            function nope() {}
-            return b || c;
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect: {
-        "use strict";
-        function foo(x) {
-            return bar(x ? 1 : 2);
-            function bar(x) {
-                return 7 - x;
-            }
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect_stdout: "5 6"
-    expect_warnings: [
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:175,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:175,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:178,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:178,16]",
-        "WARN: Dropping unused variable a [test/compress/issue-1034.js:175,20]",
-        "WARN: Dropping unused function nope [test/compress/issue-1034.js:182,21]",
-        "WARN: pass 0: last_count: Infinity, count: 48",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:180,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:180,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:183,12]",
-        "WARN: Dropping unused variable b [test/compress/issue-1034.js:178,20]",
-        "WARN: Dropping unused variable c [test/compress/issue-1034.js:180,16]",
-        "WARN: pass 1: last_count: 48, count: 29",
-    ]
-}
-
-non_hoisted_function_after_return_2b_strict: {
-    options = {
-        hoist_funs: false, dead_code: true, conditionals: true, comparisons: true,
-        evaluate: true, booleans: true, loops: true, unused: true, keep_fargs: true,
-        if_return: true, join_vars: true, cascade: true, side_effects: true,
-        collapse_vars: false
-    }
-    input: {
-        "use strict";
-        function foo(x) {
-            if (x) {
-                return bar(1);
-            } else {
-                return bar(2);
-                var b;
-            }
-            var c = bar(3);
-            function bar(x) {
-                return 7 - x;
-            }
-            return b || c;
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect: {
-        "use strict";
-        function foo(x) {
-            return bar(x ? 1 : 2);
-            function bar(x) { return 7 - x; }
-        }
-        console.log(foo(0), foo(1));
-    }
-    expect_stdout: "5 6"
-    expect_warnings: [
-        // duplicate warnings no longer emitted
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:229,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:229,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:231,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:231,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:235,12]",
-    ]
-}

test/compress/issue-1041.js

@@ -1,28 +0,0 @@
-const_pragma: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-    };
-
-    input: {
-        /** @const */ var goog = goog || {};
-    }
-    expect: {
-        var goog = goog || {};
-    }
-}
-
-// for completeness' sake
-not_const: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-    };
-
-    input: {
-        var goog = goog || {};
-    }
-    expect: {
-        var goog = goog || {};
-    }
-}

test/compress/issue-105.js

@@ -0,0 +1,25 @@
+typeof_eq_undefined: {
+    options = {
+        comparisons: true
+    };
+    input: { a = typeof b.c != "undefined" }
+    expect: { a = "undefined" != typeof b.c }
+}
+
+typeof_eq_undefined_unsafe: {
+    options = {
+        comparisons: true,
+        unsafe: true
+    };
+    input: { a = typeof b.c != "undefined" }
+    expect: { a = void 0 !== b.c }
+}
+
+typeof_eq_undefined_unsafe2: {
+    options = {
+        comparisons: true,
+        unsafe: true
+    };
+    input: { a = "undefined" != typeof b.c }
+    expect: { a = void 0 !== b.c }
+}

test/compress/issue-1052.js

@@ -1,164 +0,0 @@
-multiple_functions: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        ( function() {
-            if ( !window ) {
-                return;
-            }
-            function f() {}
-            function g() {}
-        } )();
-    }
-    expect: {
-        ( function() {
-            // NOTE: other compression steps will reduce this
-            // down to just `window`.
-            if ( window );
-            function f() {}
-            function g() {}
-        } )();
-    }
-}
-
-single_function: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        ( function() {
-            if ( !window ) {
-                return;
-            }
-            function f() {}
-        } )();
-    }
-    expect: {
-        ( function() {
-            if ( window );
-            function f() {}
-        } )();
-    }
-}
-
-deeply_nested: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        ( function() {
-            if ( !window ) {
-                return;
-            }
-            function f() {}
-            function g() {}
-            if ( !document ) {
-                return;
-            }
-            function h() {}
-        } )();
-    }
-    expect: {
-        ( function() {
-            // NOTE: other compression steps will reduce this
-            // down to just `window`.
-            if ( window )
-                if (document);
-            function f() {}
-            function g() {}
-            function h() {}
-        } )();
-    }
-}
-
-not_hoisted_when_already_nested: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        ( function() {
-            if ( !window ) {
-                return;
-            }
-            if ( foo ) function f() {}
-        } )();
-    }
-    expect: {
-        ( function() {
-            if ( window )
-                if ( foo ) function f() {}
-        } )();
-    }
-}
-
-defun_if_return: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        function e() {
-            function f() {}
-            if (!window) return;
-            else function g() {}
-            function h() {}
-        }
-    }
-    expect: {
-        function e() {
-            function f() {}
-            if (window) function g() {}
-            function h() {}
-        }
-    }
-}
-
-defun_hoist_funs: {
-    options = {
-        hoist_funs: true,
-        if_return: true,
-    }
-    input: {
-        function e() {
-            function f() {}
-            if (!window) return;
-            else function g() {}
-            function h() {}
-        }
-    }
-    expect: {
-        function e() {
-            function f() {}
-            function g() {}
-            function h() {}
-            if (window);
-        }
-    }
-}
-
-defun_else_if_return: {
-    options = {
-        hoist_funs: false,
-        if_return: true,
-    }
-    input: {
-        function e() {
-            function f() {}
-            if (window) function g() {}
-            else return;
-            function h() {}
-        }
-    }
-    expect: {
-        function e() {
-            function f() {}
-            if (window) function g() {}
-            function h() {}
-        }
-    }
-}

test/compress/issue-1105.js

@@ -1,305 +0,0 @@
-with_in_global_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        var o = 42;
-        with(o) {
-            var foo = 'something'
-        }
-        doSomething(o);
-    }
-    expect: {
-        var o=42;
-        with(o)
-            var foo = "something";
-        doSomething(o);
-    }
-}
-with_in_function_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        function foo() {
-            var o = 42;
-            with(o) {
-                var foo = "something"
-            }
-            doSomething(o);
-        }
-    }
-    expect: {
-        function foo() {
-            var o=42;
-            with(o)
-                var foo = "something";
-            doSomething(o)
-        }
-    }
-}
-compress_with_with_in_other_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        function foo() {
-            var o = 42;
-            with(o) {
-                var foo = "something"
-            }
-            doSomething(o);
-        }
-        function bar() {
-            var unused = 42;
-            return something();
-        }
-    }
-    expect: {
-        function foo() {
-            var o = 42;
-            with(o)
-                var foo = "something";
-            doSomething(o)
-        }
-        function bar() {
-            return something()
-        }
-    }
-}
-with_using_existing_variable_outside_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        function f() {
-            var o = {};
-            var unused = {}; // Doesn't get removed because upper scope uses with
-            function foo() {
-                with(o) {
-                    var foo = "something"
-                }
-                doSomething(o);
-            }
-            foo()
-        }
-    }
-    expect: {
-        function f() {
-            var o = {};
-            var unused = {};
-            function foo() {
-                with(o)
-                    var foo = "something";
-                doSomething(o)
-            }
-            foo()
-        }
-    }
-}
-check_drop_unused_in_peer_function: {
-    options = {
-        unused: true
-    }
-    input: {
-        function outer() {
-            var o = {};
-            var unused = {};     // should be kept
-            function foo() {     // should be kept
-                function not_in_use() {
-                    var nested_unused = "foo"; // should be dropped
-                    return 24;
-                }
-                var unused = {}; // should be kept
-                with (o) {
-                    var foo = "something";
-                }
-                doSomething(o);
-            }
-            function bar() {
-                var unused = {}; // should be dropped
-                doSomethingElse();
-            }
-            foo();
-            bar();
-        }
-    }
-    expect: {
-        function outer() {
-            var o = {};
-            var unused = {};     // should be kept
-            function foo() {     // should be kept
-                function not_in_use() {
-                    return 24;
-                }
-                var unused = {}; // should be kept
-                with (o)
-                    var foo = "something";
-                doSomething(o);
-            }
-            function bar() {
-                doSomethingElse();
-            }
-            foo();
-            bar();
-        }
-    }
-}
-
-Infinity_not_in_with_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        var o = { Infinity: 'oInfinity' };
-        var vInfinity = "Infinity";
-        vInfinity = Infinity;
-    }
-    expect: {
-        var o = { Infinity: 'oInfinity' }
-        var vInfinity = "Infinity"
-        vInfinity = 1/0
-    }
-}
-
-Infinity_in_with_scope: {
-    options = {
-        unused: true
-    }
-    input: {
-        var o = { Infinity: 'oInfinity' };
-        var vInfinity = "Infinity";
-        with (o) { vInfinity = Infinity; }
-    }
-    expect: {
-        var o = { Infinity: 'oInfinity' }
-        var vInfinity = "Infinity"
-        with (o) vInfinity = Infinity
-    }
-}
-
-assorted_Infinity_NaN_undefined_in_with_scope: {
-    options = {
-        unused:        true,
-        evaluate:      true,
-        dead_code:     true,
-        conditionals:  true,
-        comparisons:   true,
-        booleans:      true,
-        hoist_funs:    true,
-        keep_fargs:    true,
-        if_return:     true,
-        join_vars:     true,
-        cascade:       true,
-        side_effects:  true,
-        sequences:     false,
-        keep_infinity: false,
-    }
-    input: {
-        var f = console.log;
-        var o = {
-            undefined : 3,
-            NaN       : 4,
-            Infinity  : 5,
-        };
-        if (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -(1/0));
-            f(2 + 7 + undefined, 2 + 7 + void 0);
-        }
-        with (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -(1/0));
-            f(2 + 7 + undefined, 2 + 7 + void 0);
-        }
-    }
-    expect: {
-        var f = console.log, o = {
-            undefined : 3,
-            NaN       : 4,
-            Infinity  : 5
-        };
-        if (o) {
-            f(void 0, void 0);
-            f(NaN, NaN);
-            f(1/0, 1/0);
-            f(-1/0, -1/0);
-            f(NaN, NaN);
-        }
-        with (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -1/0);
-            f(9 + undefined, 9 + void 0);
-        }
-    }
-    expect_stdout: true
-}
-
-assorted_Infinity_NaN_undefined_in_with_scope_keep_infinity: {
-    options = {
-        unused:        true,
-        evaluate:      true,
-        dead_code:     true,
-        conditionals:  true,
-        comparisons:   true,
-        booleans:      true,
-        hoist_funs:    true,
-        keep_fargs:    true,
-        if_return:     true,
-        join_vars:     true,
-        cascade:       true,
-        side_effects:  true,
-        sequences:     false,
-        keep_infinity: true,
-    }
-    input: {
-        var f = console.log;
-        var o = {
-            undefined : 3,
-            NaN       : 4,
-            Infinity  : 5,
-        };
-        if (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -(1/0));
-            f(2 + 7 + undefined, 2 + 7 + void 0);
-        }
-        with (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -(1/0));
-            f(2 + 7 + undefined, 2 + 7 + void 0);
-        }
-    }
-    expect: {
-        var f = console.log, o = {
-            undefined : 3,
-            NaN       : 4,
-            Infinity  : 5
-        };
-        if (o) {
-            f(void 0, void 0);
-            f(NaN, NaN);
-            f(Infinity, 1/0);
-            f(-Infinity, -1/0);
-            f(NaN, NaN);
-        }
-        with (o) {
-            f(undefined, void 0);
-            f(NaN, 0/0);
-            f(Infinity, 1/0);
-            f(-Infinity, -1/0);
-            f(9 + undefined, 9 + void 0);
-        }
-    }
-    expect_stdout: true
-}

test/compress/issue-12.js

@@ -9,50 +9,3 @@ keep_name_of_setter: {
     input: { a = { set foo () {} } }
     expect: { a = { set foo () {} } }
 }
-
-setter_with_operator_keys: {
-    input: {
-        var tokenCodes  = {
-            get instanceof(){
-                return test0;
-            },
-            set instanceof(value){
-                test0 = value;
-            },
-            set typeof(value){
-                test1 = value;
-            },
-            get typeof(){
-                return test1;
-            },
-            set else(value){
-                test2 = value;
-            },
-            get else(){
-                return test2;
-            }
-        };
-    }
-    expect: {
-        var tokenCodes  = {
-            get instanceof(){
-                return test0;
-            },
-            set instanceof(value){
-                test0 = value;
-            },
-            set typeof(value){
-                test1 = value;
-            },
-            get typeof(){
-                return test1;
-            },
-            set else(value){
-                test2 = value;
-            },
-            get else(){
-                return test2;
-            }
-        };
-    }
-}

test/compress/issue-1202.js

@@ -1,51 +0,0 @@
-mangle_keep_fnames_false: {
-    options = {
-        keep_fnames : true,
-        keep_fargs  : true,
-    }
-    mangle = {
-        keep_fnames : false,
-    }
-    input: {
-        "use strict";
-        function total() {
-            return function n(a, b, c) {
-                return a + b + c;
-            };
-        }
-    }
-    expect: {
-        "use strict";
-        function total() {
-            return function t(n, r, u) {
-                return n + r + u;
-            };
-        }
-    }
-}
-
-mangle_keep_fnames_true: {
-    options = {
-        keep_fnames : true,
-        keep_fargs  : true,
-    }
-    mangle = {
-        keep_fnames : true,
-    }
-    input: {
-        "use strict";
-        function total() {
-            return function n(a, b, c) {
-                return a + b + c;
-            };
-        }
-    }
-    expect: {
-        "use strict";
-        function total() {
-            return function n(t, r, u) {
-                return t + r + u;
-            };
-        }
-    }
-}

test/compress/issue-1261.js

@@ -1,185 +0,0 @@
-pure_function_calls: {
-    options = {
-        evaluate     : true,
-        conditionals : true,
-        comparisons  : true,
-        side_effects : true,
-        booleans     : true,
-        unused       : true,
-        if_return    : true,
-        join_vars    : true,
-        cascade      : true,
-        negate_iife  : true,
-    }
-    input: {
-        // pure top-level IIFE will be dropped
-        // @__PURE__ - comment
-        (function() {
-            console.log("iife0");
-        })();
-
-        // pure top-level IIFE assigned to unreferenced var will not be dropped
-        var iife1 = /*@__PURE__*/(function() {
-            console.log("iife1");
-            function iife1() {}
-            return iife1;
-        })();
-
-        (function(){
-            // pure IIFE in function scope assigned to unreferenced var will be dropped
-            var iife2 = /*#__PURE__*/(function() {
-                console.log("iife2");
-                function iife2() {}
-                return iife2;
-            })();
-        })();
-
-        // comment #__PURE__ comment
-        bar(), baz(), quux();
-        a.b(), /* @__PURE__ */ c.d.e(), f.g();
-    }
-    expect: {
-        var iife1 = function() {
-            console.log("iife1");
-            function iife1() {}
-            return iife1;
-        }();
-
-        baz(), quux();
-        a.b(), f.g();
-    }
-    expect_warnings: [
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:17,8]",
-        "WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:17,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:30,37]",
-        "WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:30,16]",
-        "WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:28,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:38,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:39,31]",
-    ]
-}
-
-pure_function_calls_toplevel: {
-    options = {
-        evaluate     : true,
-        conditionals : true,
-        comparisons  : true,
-        side_effects : true,
-        booleans     : true,
-        unused       : true,
-        if_return    : true,
-        join_vars    : true,
-        cascade      : true,
-        negate_iife  : true,
-        toplevel     : true,
-    }
-    input: {
-        // pure top-level IIFE will be dropped
-        // @__PURE__ - comment
-        (function() {
-            console.log("iife0");
-        })();
-
-        // pure top-level IIFE assigned to unreferenced var will be dropped
-        var iife1 = /*@__PURE__*/(function() {
-            console.log("iife1");
-            function iife1() {}
-            return iife1;
-        })();
-
-        (function(){
-            // pure IIFE in function scope assigned to unreferenced var will be dropped
-            var iife2 = /*#__PURE__*/(function() {
-                console.log("iife2");
-                function iife2() {}
-                return iife2;
-            })();
-        })();
-
-        // pure top-level calls will be dropped regardless of the leading comments position
-        var MyClass = /*#__PURE__*//*@class*/(function(){
-            function MyClass() {}
-            MyClass.prototype.method = function() {};
-            return MyClass;
-        })();
-
-        // comment #__PURE__ comment
-        bar(), baz(), quux();
-        a.b(), /* @__PURE__ */ c.d.e(), f.g();
-    }
-    expect: {
-        baz(), quux();
-        a.b(), f.g();
-    }
-    expect_warnings: [
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:79,8]",
-        "WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:79,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:92,37]",
-        "WARN: Dropping unused variable iife2 [test/compress/issue-1261.js:92,16]",
-        "WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:90,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:107,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:108,31]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:84,33]",
-        "WARN: Dropping unused variable iife1 [test/compress/issue-1261.js:84,12]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:100,45]",
-        "WARN: Dropping unused variable MyClass [test/compress/issue-1261.js:100,12]",
-    ]
-}
-
-should_warn: {
-    options = {
-        booleans: true,
-        conditionals: true,
-        evaluate: true,
-        side_effects: true,
-    }
-    input: {
-        /* @__PURE__ */(function(){x})(), void/* @__PURE__ */(function(){y})();
-        /* @__PURE__ */(function(){x})() || true ? foo() : bar();
-        true || /* @__PURE__ */(function(){y})() ? foo() : bar();
-        /* @__PURE__ */(function(){x})() && false ? foo() : bar();
-        false && /* @__PURE__ */(function(){y})() ? foo() : bar();
-        /* @__PURE__ */(function(){x})() + "foo" ? bar() : baz();
-        "foo" + /* @__PURE__ */(function(){y})() ? bar() : baz();
-        /* @__PURE__ */(function(){x})() ? foo() : foo();
-        [/* @__PURE__ */(function(){x})()] ? foo() : bar();
-        !{ foo: /* @__PURE__ */(function(){x})() } ? bar() : baz();
-    }
-    expect: {
-        foo();
-        foo();
-        bar();
-        bar();
-        bar();
-        bar();
-        foo();
-        foo();
-        baz();
-    }
-    expect_warnings: [
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:137,61]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:137,23]",
-        "WARN: Dropping side-effect-free statement [test/compress/issue-1261.js:137,23]",
-        "WARN: Boolean || always true [test/compress/issue-1261.js:138,23]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:138,23]",
-        "WARN: Condition always true [test/compress/issue-1261.js:138,23]",
-        "WARN: Condition left of || always true [test/compress/issue-1261.js:139,8]",
-        "WARN: Condition always true [test/compress/issue-1261.js:139,8]",
-        "WARN: Boolean && always false [test/compress/issue-1261.js:140,23]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:140,23]",
-        "WARN: Condition always false [test/compress/issue-1261.js:140,23]",
-        "WARN: Condition left of && always false [test/compress/issue-1261.js:141,8]",
-        "WARN: Condition always false [test/compress/issue-1261.js:141,8]",
-        "WARN: + in boolean context always true [test/compress/issue-1261.js:142,23]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:142,23]",
-        "WARN: Condition always true [test/compress/issue-1261.js:142,23]",
-        "WARN: + in boolean context always true [test/compress/issue-1261.js:143,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:143,31]",
-        "WARN: Condition always true [test/compress/issue-1261.js:143,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:144,23]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:145,24]",
-        "WARN: Condition always true [test/compress/issue-1261.js:145,8]",
-        "WARN: Dropping __PURE__ call [test/compress/issue-1261.js:146,31]",
-        "WARN: Condition always false [test/compress/issue-1261.js:146,8]",
-    ]
-}

test/compress/issue-1275.js

@@ -1,50 +0,0 @@
-string_plus_optimization: {
-    options = {
-        side_effects  : true,
-        evaluate      : true,
-        conditionals  : true,
-        comparisons   : true,
-        dead_code     : true,
-        booleans      : true,
-        unused        : true,
-        if_return     : true,
-        join_vars     : true,
-        cascade       : true,
-        hoist_funs    : true,
-    };
-    input: {
-        function foo(anything) {
-            function throwing_function() {
-                throw "nope";
-            }
-            try {
-                console.log('0' + throwing_function() ? "yes" : "no");
-            } catch (ex) {
-                console.log(ex);
-            }
-            console.log('0' + anything ? "yes" : "no");
-            console.log(anything + '0' ? "Yes" : "No");
-            console.log('' + anything);
-            console.log(anything + '');
-        }
-        foo();
-    }
-    expect: {
-        function foo(anything) {
-            function throwing_function() {
-                throw "nope";
-            }
-            try {
-                console.log((throwing_function(), "yes"));
-            } catch (ex) {
-                console.log(ex);
-            }
-            console.log("yes");
-            console.log("Yes");
-            console.log('' + anything);
-            console.log(anything + '');
-        }
-        foo();
-    }
-    expect_stdout: true
-}

test/compress/issue-1321.js

@@ -1,63 +0,0 @@
-issue_1321_no_debug: {
-    mangle = {
-        properties: {
-            keep_quoted: true,
-        },
-    }
-    input: {
-        var x = {};
-        x.foo = 1;
-        x["a"] = 2 * x.foo;
-        console.log(x.foo, x["a"]);
-    }
-    expect: {
-        var x = {};
-        x.x = 1;
-        x["a"] = 2 * x.x;
-        console.log(x.x, x["a"]);
-    }
-    expect_stdout: true
-}
-
-issue_1321_debug: {
-    mangle = {
-        properties: {
-            debug: "",
-            keep_quoted: true,
-        },
-    }
-    input: {
-        var x = {};
-        x.foo = 1;
-        x["_$foo$_"] = 2 * x.foo;
-        console.log(x.foo, x["_$foo$_"]);
-    }
-    expect: {
-        var x = {};
-        x.x = 1;
-        x["_$foo$_"] = 2 * x.x;
-        console.log(x.x, x["_$foo$_"]);
-    }
-    expect_stdout: true
-}
-
-issue_1321_with_quoted: {
-    mangle = {
-        properties: {
-            keep_quoted: false,
-        },
-    }
-    input: {
-        var x = {};
-        x.foo = 1;
-        x["a"] = 2 * x.foo;
-        console.log(x.foo, x["a"]);
-    }
-    expect: {
-        var x = {};
-        x.x = 1;
-        x["o"] = 2 * x.x;
-        console.log(x.x, x["o"]);
-    }
-    expect_stdout: true
-}

test/compress/issue-1431.js

@@ -1,151 +0,0 @@
-level_zero: {
-    options = {
-        keep_fnames: true
-    }
-    mangle = {
-        keep_fnames: true
-    }
-    input: {
-        function f(x) {
-            function n(a) {
-                return a * a;
-            }
-            return function() {
-                return x;
-            };
-        }
-    }
-    expect: {
-        function f(r) {
-            function n(n) {
-                return n * n;
-            }
-            return function() {
-                return r;
-            };
-        }
-    }
-}
-
-level_one: {
-    options = {
-        keep_fnames: true
-    }
-    mangle = {
-        keep_fnames: true
-    }
-    input: {
-        function f(x) {
-            return function() {
-                function n(a) {
-                    return a * a;
-                }
-                return x(n);
-            };
-        }
-    }
-    expect: {
-        function f(r) {
-            return function() {
-                function n(n) {
-                    return n * n;
-                }
-                return r(n);
-            };
-        }
-    }
-}
-
-level_two: {
-    options = {
-        keep_fnames: true
-    }
-    mangle = {
-        keep_fnames: true
-    }
-    input: {
-        function f(x) {
-            return function() {
-                function r(a) {
-                    return a * a;
-                }
-                return function() {
-                    function n(a) {
-                        return a * a;
-                    }
-                    return x(n);
-                };
-            };
-        }
-    }
-    expect: {
-        function f(t) {
-            return function() {
-                function r(n) {
-                    return n * n;
-                }
-                return function() {
-                    function n(n) {
-                        return n * n;
-                    }
-                    return t(n);
-                };
-            };
-        }
-    }
-}
-
-level_three: {
-    options = {
-        keep_fnames: true
-    }
-    mangle = {
-        keep_fnames: true
-    }
-    input: {
-        function f(x) {
-            return function() {
-                function r(a) {
-                    return a * a;
-                }
-                return [
-                    function() {
-                        function t(a) {
-                            return a * a;
-                        }
-                        return t;
-                    },
-                    function() {
-                        function n(a) {
-                            return a * a;
-                        }
-                        return x(n);
-                    }
-                ];
-            };
-        }
-    }
-    expect: {
-        function f(t) {
-            return function() {
-                function r(n) {
-                    return n * n;
-                }
-                return [
-                    function() {
-                        function t(n) {
-                            return n * n;
-                        }
-                        return t;
-                    },
-                    function() {
-                        function n(n) {
-                            return n * n;
-                        }
-                        return t(n);
-                    }
-                ];
-            };
-        }
-    }
-}

test/compress/issue-1443.js

@@ -1,61 +0,0 @@
-// tests assume that variable `undefined` not redefined and has `void 0` as value
-
-unsafe_undefined: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        unsafe: true
-    }
-    mangle = {}
-    input: {
-        function f(undefined) {
-            return function() {
-                if (a)
-                    return b;
-                if (c)
-                    return d;
-            };
-        }
-    }
-    expect: {
-        function f(n) {
-            return function() {
-                return a ? b : c ? d : n;
-            };
-        }
-    }
-}
-
-keep_fnames: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        unsafe: true
-    }
-    mangle = {
-        keep_fnames: true
-    }
-    input: {
-        function f(undefined) {
-            return function() {
-                function n(a) {
-                    return a * a;
-                }
-                if (a)
-                    return b;
-                if (c)
-                    return d;
-            };
-        }
-    }
-    expect: {
-        function f(r) {
-            return function() {
-                function n(n) {
-                    return n * n;
-                }
-                return a ? b : c ? d : r;
-            };
-        }
-    }
-}

test/compress/issue-1446.js

@@ -1,75 +0,0 @@
-typeof_eq_undefined: {
-    options = {
-        comparisons: true,
-        typeofs: true,
-    }
-    input: {
-        var a = typeof b != "undefined";
-        b = typeof a != "undefined";
-        var c = typeof d.e !== "undefined";
-        var f = "undefined" === typeof g;
-        g = "undefined" === typeof f;
-        var h = "undefined" == typeof i.j;
-    }
-    expect: {
-        var a = "undefined" != typeof b;
-        b = void 0 !== a;
-        var c = void 0 !== d.e;
-        var f = "undefined" == typeof g;
-        g = void 0 === f;
-        var h = void 0 === i.j;
-    }
-}
-
-typeof_eq_undefined_ie8: {
-    options = {
-        comparisons: true,
-        ie8: true,
-        typeofs: true,
-    }
-    input: {
-        var a = typeof b != "undefined";
-        b = typeof a != "undefined";
-        var c = typeof d.e !== "undefined";
-        var f = "undefined" === typeof g;
-        g = "undefined" === typeof f;
-        var h = "undefined" == typeof i.j;
-    }
-    expect: {
-        var a = "undefined" != typeof b;
-        b = void 0 !== a;
-        var c = "undefined" != typeof d.e;
-        var f = "undefined" == typeof g;
-        g = void 0 === f;
-        var h = "undefined" == typeof i.j;
-    }
-}
-
-undefined_redefined: {
-    options = {
-        comparisons: true,
-        typeofs: true,
-    }
-    input: {
-        function f(undefined) {
-            var n = 1;
-            return typeof n == "undefined";
-        }
-    }
-    expect_exact: "function f(undefined){var n=1;return void 0===n}"
-}
-
-undefined_redefined_mangle: {
-    options = {
-        comparisons: true,
-        typeofs: true,
-    }
-    mangle = {}
-    input: {
-        function f(undefined) {
-            var n = 1;
-            return typeof n == "undefined";
-        }
-    }
-    expect_exact: "function f(n){var r=1;return void 0===r}"
-}

test/compress/issue-1447.js

@@ -1,46 +0,0 @@
-else_with_empty_block: {
-    options = {}
-    input: {
-        if (x)
-            yes();
-        else {
-        }
-    }
-    expect_exact: "if(x)yes();"
-}
-
-else_with_empty_statement: {
-    options = {}
-    input: {
-        if (x)
-            yes();
-        else
-            ;
-    }
-    expect_exact: "if(x)yes();"
-}
-
-conditional_false_stray_else_in_loop: {
-    options = {
-        evaluate     : true,
-        comparisons  : true,
-        booleans     : true,
-        unused       : true,
-        loops        : true,
-        side_effects : true,
-        dead_code    : true,
-        hoist_vars   : true,
-        join_vars    : true,
-        if_return    : true,
-        cascade      : true,
-        conditionals : false,
-    }
-    input: {
-        for (var i = 1; i <= 4; ++i) {
-            if (i <= 2) continue;
-            console.log(i);
-        }
-    }
-    expect_exact: "for(var i=1;i<=4;++i)if(!(i<=2))console.log(i);"
-    expect_stdout: true
-}

test/compress/issue-1569.js

@@ -1,19 +0,0 @@
-inner_reference: {
-    options = {
-        side_effects: true,
-    }
-    input: {
-        !function f(a) {
-            return a && f(a - 1) + a;
-        }(42);
-        !function g(a) {
-            return a;
-        }(42);
-    }
-    expect: {
-        !function f(a) {
-            return a && f(a - 1) + a;
-        }(42);
-        !void 0;
-    }
-}

test/compress/issue-1588.js

@@ -1,87 +0,0 @@
-screw_ie8: {
-    options = {
-        ie8: false,
-    }
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        try { throw "foo"; } catch (x) { console.log(x); }
-    }
-    expect_exact: 'try{throw"foo"}catch(o){console.log(o)}'
-    expect_stdout: [
-        "foo"
-    ]
-}
-
-support_ie8: {
-    options = {
-        ie8: true,
-    }
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        try { throw "foo"; } catch (x) { console.log(x); }
-    }
-    expect_exact: 'try{throw"foo"}catch(x){console.log(x)}'
-    expect_stdout: "foo"
-}
-
-safe_undefined: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        unsafe: false,
-    }
-    mangle = {}
-    input: {
-        var a, c;
-        console.log(function(undefined) {
-            return function() {
-                if (a)
-                    return b;
-                if (c)
-                    return d;
-            };
-        }(1)());
-    }
-    expect: {
-        var a, c;
-        console.log(function(n) {
-            return function() {
-                return a ? b : c ? d : void 0;
-            };
-        }(1)());
-    }
-    expect_stdout: true
-}
-
-unsafe_undefined: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        unsafe: true,
-    }
-    mangle = {}
-    input: {
-        var a, c;
-        console.log(function(undefined) {
-            return function() {
-                if (a)
-                    return b;
-                if (c)
-                    return d;
-            };
-        }()());
-    }
-    expect: {
-        var a, c;
-        console.log(function(n) {
-            return function() {
-                return a ? b : c ? d : n;
-            };
-        }()());
-    }
-    expect_stdout: true
-}

test/compress/issue-1609.js

@@ -1,52 +0,0 @@
-chained_evaluation_1: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        (function() {
-            var a = 1;
-            (function() {
-                var b = a, c;
-                c = f(b);
-                c.bar = b;
-            })();
-        })();
-    }
-    expect: {
-        (function() {
-            (function() {
-                f(1).bar = 1;
-            })();
-        })();
-    }
-}
-
-chained_evaluation_2: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        (function() {
-            var a = "long piece of string";
-            (function() {
-                var b = a, c;
-                c = f(b);
-                c.bar = b;
-            })();
-        })();
-    }
-    expect: {
-        (function() {
-            (function() {
-                var b = "long piece of string";
-                f(b).bar = b;
-            })();
-        })();
-    }
-}

test/compress/issue-1639.js

@@ -1,88 +0,0 @@
-
-issue_1639_1: {
-    options = {
-        booleans: true,
-        cascade: true,
-        conditionals: true,
-        evaluate: true,
-        join_vars: true,
-        loops: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 100, b = 10;
-
-        var L1 = 5;
-        while (--L1 > 0) {
-            if ((--b), false) {
-                if (b) {
-                    var ignore = 0;
-                }
-            }
-        }
-
-        console.log(a, b);
-    }
-    expect: {
-        for (var a = 100, b = 10, L1 = 5; --L1 > 0;)
-            if (--b, !1) var ignore = 0;
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-issue_1639_2: {
-    options = {
-        booleans: true,
-        cascade: true,
-        conditionals: true,
-        evaluate: true,
-        join_vars: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 100, b = 10;
-
-        function f19() {
-            if (++a, false)
-                if (a)
-                    if (++a);
-        }
-        f19();
-
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        function f19() {
-            ++a, 1;
-        }
-        f19(),
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-issue_1639_3: {
-    options = {
-        booleans: true,
-        cascade: true,
-        conditionals: true,
-        evaluate: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        a++ && false && a ? 0 : 0;
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        a++,
-        console.log(a, b);
-    }
-    expect_stdout: true
-}

test/compress/issue-1656.js

@@ -1,45 +0,0 @@
-f7: {
-    options = {
-        booleans: true,
-        cascade: true,
-        collapse_vars: true,
-        comparisons: true,
-        conditionals: true,
-        dead_code: true,
-        drop_debugger: true,
-        evaluate: true,
-        hoist_funs: true,
-        if_return: true,
-        join_vars: true,
-        loops: true,
-        negate_iife: true,
-        passes: 3,
-        properties: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        function f22464() {
-            var brake146670 = 5;
-            while (((b = a) ? !a : ~a ? null : b += a) && --brake146670 > 0) {
-            }
-        }
-        f22464();
-        console.log(a, b);
-    }
-    expect_exact: [
-        "var b = 10;",
-        "",
-        "!function() {",
-        "    for (;b = 100, !1; ) ;",
-        "}(), console.log(100, b);",
-    ]
-    expect_stdout: true
-}

test/compress/issue-1673.js

@@ -1,161 +0,0 @@
-side_effects_catch: {
-    options = {
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                try {
-                    throw 0;
-                } catch (e) {
-                    console.log("PASS");
-                }
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        function f() {
-            (function() {
-                try {
-                    throw 0;
-                } catch (e) {
-                    console.log("PASS");
-                }
-            })();
-        }
-        f();
-    }
-    expect_stdout: "PASS"
-}
-
-side_effects_else: {
-    options = {
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            function g() {
-                if (x);
-                else console.log("PASS");
-            }
-            g();
-        }
-        f(0);
-    }
-    expect: {
-        function f(x) {
-            (function() {
-                if (x);
-                else console.log("PASS");
-            })();
-        }
-        f(0);
-    }
-    expect_stdout: "PASS"
-}
-
-side_effects_finally: {
-    options = {
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                try {
-                    x();
-                } catch (e) {
-                } finally {
-                    console.log("PASS");
-                }
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        function f() {
-            (function() {
-                try {
-                    x();
-                } catch (e) {
-                } finally {
-                    console.log("PASS");
-                }
-            })();
-        }
-        f();
-    }
-    expect_stdout: "PASS"
-}
-
-side_effects_label: {
-    options = {
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            function g() {
-                L: {
-                    console.log("PASS");
-                    break L;
-                }
-            }
-            g();
-        }
-        f(0);
-    }
-    expect: {
-        function f(x) {
-            (function() {
-                L: {
-                    console.log("PASS");
-                    break L;
-                }
-            })();
-        }
-        f(0);
-    }
-    expect_stdout: "PASS"
-}
-
-side_effects_switch: {
-    options = {
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                switch (0) {
-                  default:
-                  case console.log("PASS"):
-                }
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        function f() {
-            (function() {
-                switch (0) {
-                  default:
-                  case console.log("PASS"):
-                }
-            })();
-        }
-        f();
-    }
-    expect_stdout: "PASS"
-}

test/compress/issue-1704.js

@@ -1,347 +0,0 @@
-mangle_catch: {
-    options = {
-        ie8: false,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: false,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="FAIL";try{throw 1}catch(o){a="PASS"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_ie8: {
-    options = {
-        ie8: true,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: false,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="FAIL";try{throw 1}catch(args){a="PASS"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_var: {
-    options = {
-        ie8: false,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: false,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            var a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="FAIL";try{throw 1}catch(o){var a="PASS"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_var_ie8: {
-    options = {
-        ie8: true,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: false,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            var a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="FAIL";try{throw 1}catch(args){var a="PASS"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_toplevel: {
-    options = {
-        ie8: false,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: true,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="FAIL";try{throw 1}catch(c){o="PASS"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_ie8_toplevel: {
-    options = {
-        ie8: true,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: true,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="FAIL";try{throw 1}catch(c){o="PASS"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_var_toplevel: {
-    options = {
-        ie8: false,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: true,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            var a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="FAIL";try{throw 1}catch(r){var o="PASS"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_var_ie8_toplevel: {
-    options = {
-        ie8: true,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: true,
-    }
-    input: {
-        var a = "FAIL";
-        try {
-            throw 1;
-        } catch (args) {
-            var a = "PASS";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="FAIL";try{throw 1}catch(r){var o="PASS"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_redef_1: {
-    options = {
-        ie8: false,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: false,
-    }
-    input: {
-        var a = "PASS";
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="PASS";try{throw"FAIL1"}catch(a){var a="FAIL2"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_redef_1_ie8: {
-    options = {
-        ie8: true,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: false,
-    }
-    input: {
-        var a = "PASS";
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var a="PASS";try{throw"FAIL1"}catch(a){var a="FAIL2"}console.log(a);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_redef_1_toplevel: {
-    options = {
-        ie8: false,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: true,
-    }
-    input: {
-        var a = "PASS";
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="PASS";try{throw"FAIL1"}catch(o){var o="FAIL2"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_redef_1_ie8_toplevel: {
-    options = {
-        ie8: true,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: true,
-    }
-    input: {
-        var a = "PASS";
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'var o="PASS";try{throw"FAIL1"}catch(o){var o="FAIL2"}console.log(o);'
-    expect_stdout: "PASS"
-}
-
-mangle_catch_redef_2: {
-    options = {
-        ie8: false,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: false,
-    }
-    input: {
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'try{throw"FAIL1"}catch(a){var a="FAIL2"}console.log(a);'
-    expect_stdout: "undefined"
-}
-
-mangle_catch_redef_2_ie8: {
-    options = {
-        ie8: true,
-        toplevel: false,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: false,
-    }
-    input: {
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'try{throw"FAIL1"}catch(a){var a="FAIL2"}console.log(a);'
-    expect_stdout: "undefined"
-}
-
-mangle_catch_redef_2_toplevel: {
-    options = {
-        ie8: false,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: false,
-        toplevel: true,
-    }
-    input: {
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'try{throw"FAIL1"}catch(o){var o="FAIL2"}console.log(o);'
-    expect_stdout: "undefined"
-}
-
-mangle_catch_redef_2_ie8_toplevel: {
-    options = {
-        ie8: true,
-        toplevel: true,
-    }
-    mangle = {
-        ie8: true,
-        toplevel: true,
-    }
-    input: {
-        try {
-            throw "FAIL1";
-        } catch (a) {
-            var a = "FAIL2";
-        }
-        console.log(a);
-    }
-    expect_exact: 'try{throw"FAIL1"}catch(o){var o="FAIL2"}console.log(o);'
-    expect_stdout: "undefined"
-}

test/compress/issue-1733.js

@@ -1,97 +0,0 @@
-function_iife_catch: {
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        function f(n) {
-            !function() {
-                try {
-                    throw 0;
-                } catch (n) {
-                    var a = 1;
-                    console.log(n, a);
-                }
-            }();
-        }
-        f();
-    }
-    expect_exact: "function f(o){!function(){try{throw 0}catch(c){var o=1;console.log(c,o)}}()}f();"
-    expect_stdout: "0 1"
-}
-
-function_iife_catch_ie8: {
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        function f(n) {
-            !function() {
-                try {
-                    throw 0;
-                } catch (n) {
-                    var a = 1;
-                    console.log(n, a);
-                }
-            }();
-        }
-        f();
-    }
-    expect_exact: "function f(o){!function(){try{throw 0}catch(o){var c=1;console.log(o,c)}}()}f();"
-    expect_stdout: "0 1"
-}
-
-function_catch_catch: {
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        var o = 0;
-        function f() {
-            try {
-                throw 1;
-            } catch (c) {
-                try {
-                    throw 2;
-                } catch (o) {
-                    var o = 3;
-                    console.log(o);
-                }
-            }
-            console.log(o);
-        }
-        f();
-    }
-    expect_exact: "var o=0;function f(){try{throw 1}catch(c){try{throw 2}catch(o){var o=3;console.log(o)}}console.log(o)}f();"
-    expect_stdout: [
-        "3",
-        "undefined",
-    ]
-}
-
-function_catch_catch_ie8: {
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        var o = 0;
-        function f() {
-            try {
-                throw 1;
-            } catch (c) {
-                try {
-                    throw 2;
-                } catch (o) {
-                    var o = 3;
-                    console.log(o);
-                }
-            }
-            console.log(o);
-        }
-        f();
-    }
-    expect_exact: "var o=0;function f(){try{throw 1}catch(c){try{throw 2}catch(o){var o=3;console.log(o)}}console.log(o)}f();"
-    expect_stdout: [
-        "3",
-        "undefined",
-    ]
-}

test/compress/issue-1750.js

@@ -1,54 +0,0 @@
-case_1: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        switches: true,
-    }
-    input: {
-        var a = 0, b = 1;
-        switch (true) {
-          case a, true:
-          default:
-            b = 2;
-          case true:
-        }
-        console.log(a, b);
-    }
-    expect: {
-        var a = 0, b = 1;
-        switch (true) {
-          case a, true:
-            b = 2;
-        }
-        console.log(a, b);
-    }
-    expect_stdout: "0 2"
-}
-
-case_2: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        switches: true,
-    }
-    input: {
-        var a = 0, b = 1;
-        switch (0) {
-          default:
-            b = 2;
-          case a:
-            a = 3;
-          case 0:
-        }
-        console.log(a, b);
-    }
-    expect: {
-        var a = 0, b = 1;
-        switch (0) {
-          case a:
-            a = 3;
-        }
-        console.log(a, b);
-    }
-    expect_stdout: "3 1"
-}

test/compress/issue-1770.js

@@ -1,245 +0,0 @@
-mangle_props: {
-    mangle = {
-        properties: true,
-    }
-    input: {
-        var obj = {
-            undefined: 1,
-            NaN: 2,
-            Infinity: 3,
-            "-Infinity": 4,
-            null: 5,
-        };
-        console.log(
-            obj[void 0],
-            obj[undefined],
-            obj["undefined"],
-            obj[0/0],
-            obj[NaN],
-            obj["NaN"],
-            obj[1/0],
-            obj[Infinity],
-            obj["Infinity"],
-            obj[-1/0],
-            obj[-Infinity],
-            obj["-Infinity"],
-            obj[null],
-            obj["null"]
-        );
-    }
-    expect: {
-        var obj = {
-            undefined: 1,
-            NaN: 2,
-            Infinity: 3,
-            "-Infinity": 4,
-            null: 5,
-        };
-        console.log(
-            obj[void 0],
-            obj[void 0],
-            obj["undefined"],
-            obj[0/0],
-            obj[NaN],
-            obj["NaN"],
-            obj[1/0],
-            obj[1/0],
-            obj["Infinity"],
-            obj[-1/0],
-            obj[-1/0],
-            obj["-Infinity"],
-            obj[null],
-            obj["null"]
-        );
-    }
-    expect_stdout: "1 1 1 2 2 2 3 3 3 4 4 4 5 5"
-}
-
-numeric_literal: {
-    mangle = {
-        properties: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        var obj = {
-            0: 0,
-            "-0": 1,
-            42: 2,
-            "42": 3,
-            0x25: 4,
-            "0x25": 5,
-            1E42: 6,
-            "1E42": 7,
-            "1e+42": 8,
-        };
-        console.log(obj[-0], obj[-""], obj["-0"]);
-        console.log(obj[42], obj["42"]);
-        console.log(obj[0x25], obj["0x25"], obj[37], obj["37"]);
-        console.log(obj[1E42], obj["1E42"], obj["1e+42"]);
-    }
-    expect_exact: [
-        'var obj = {',
-        '    0: 0,',
-        '    "-0": 1,',
-        '    42: 2,',
-        '    "42": 3,',
-        '    37: 4,',
-        '    o: 5,',
-        '    1e42: 6,',
-        '    b: 7,',
-        '    "1e+42": 8',
-        '};',
-        '',
-        'console.log(obj[-0], obj[-""], obj["-0"]);',
-        '',
-        'console.log(obj[42], obj["42"]);',
-        '',
-        'console.log(obj[37], obj["o"], obj[37], obj["37"]);',
-        '',
-        'console.log(obj[1e42], obj["b"], obj["1e+42"]);',
-    ]
-    expect_stdout: [
-        "0 0 1",
-        "3 3",
-        "4 5 4 4",
-        "8 7 8",
-    ]
-}
-
-identifier: {
-    mangle = {
-        properties: true,
-    }
-    input: {
-        var obj = {
-            abstract: 1,
-            boolean: 2,
-            byte: 3,
-            char: 4,
-            class: 5,
-            double: 6,
-            enum: 7,
-            export: 8,
-            extends: 9,
-            final: 10,
-            float: 11,
-            goto: 12,
-            implements: 13,
-            import: 14,
-            int: 15,
-            interface: 16,
-            let: 17,
-            long: 18,
-            native: 19,
-            package: 20,
-            private: 21,
-            protected: 22,
-            public: 23,
-            short: 24,
-            static: 25,
-            super: 26,
-            synchronized: 27,
-            this: 28,
-            throws: 29,
-            transient: 30,
-            volatile: 31,
-            yield: 32,
-            false: 33,
-            null: 34,
-            true: 35,
-            break: 36,
-            case: 37,
-            catch: 38,
-            const: 39,
-            continue: 40,
-            debugger: 41,
-            default: 42,
-            delete: 43,
-            do: 44,
-            else: 45,
-            finally: 46,
-            for: 47,
-            function: 48,
-            if: 49,
-            in: 50,
-            instanceof: 51,
-            new: 52,
-            return: 53,
-            switch: 54,
-            throw: 55,
-            try: 56,
-            typeof: 57,
-            var: 58,
-            void: 59,
-            while: 60,
-            with: 61,
-        };
-    }
-    expect: {
-        var obj = {
-            e: 1,
-            t: 2,
-            n: 3,
-            a: 4,
-            i: 5,
-            o: 6,
-            r: 7,
-            l: 8,
-            s: 9,
-            c: 10,
-            f: 11,
-            u: 12,
-            d: 13,
-            h: 14,
-            p: 15,
-            b: 16,
-            v: 17,
-            w: 18,
-            y: 19,
-            g: 20,
-            m: 21,
-            k: 22,
-            x: 23,
-            j: 24,
-            z: 25,
-            q: 26,
-            A: 27,
-            B: 28,
-            C: 29,
-            D: 30,
-            F: 31,
-            G: 32,
-            false: 33,
-            null: 34,
-            true: 35,
-            H: 36,
-            I: 37,
-            J: 38,
-            K: 39,
-            L: 40,
-            M: 41,
-            N: 42,
-            O: 43,
-            P: 44,
-            Q: 45,
-            R: 46,
-            S: 47,
-            T: 48,
-            U: 49,
-            V: 50,
-            W: 51,
-            X: 52,
-            Y: 53,
-            Z: 54,
-            $: 55,
-            _: 56,
-            ee: 57,
-            te: 58,
-            ne: 59,
-            ae: 60,
-            ie: 61,
-        };
-    }
-}

test/compress/issue-1787.js

@@ -1,16 +0,0 @@
-unary_prefix: {
-    options = {
-        evaluate: true,
-        inline: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        console.log(function() {
-            var x = -(2 / 3);
-            return x;
-        }());
-    }
-    expect_exact: "console.log(-2/3);"
-    expect_stdout: true
-}

test/compress/issue-1833.js

@@ -1,134 +0,0 @@
-iife_for: {
-    options = {
-        negate_iife: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                L: for (;;) break L;
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        !function() {
-            !function() {
-                L: for (;;) break L;
-            }();
-        }();
-    }
-}
-
-iife_for_in: {
-    options = {
-        negate_iife: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                L: for (var a in x) break L;
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        !function() {
-            !function() {
-                L: for (var a in x) break L;
-            }();
-        }();
-    }
-}
-
-iife_do: {
-    options = {
-        negate_iife: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                L: do {
-                    break L;
-                } while (1);
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        !function() {
-            !function() {
-                L: do {
-                    break L;
-                } while (1);
-            }();
-        }();
-    }
-}
-
-iife_while: {
-    options = {
-        negate_iife: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                L: while (1) break L;
-            }
-            g();
-        }
-        f();
-    }
-    expect: {
-        !function() {
-            !function() {
-                L: while (1) break L;
-            }();
-        }();
-    }
-}
-
-label_do: {
-    options = {
-        evaluate: true,
-        loops: true,
-    }
-    input: {
-        L: do {
-            continue L;
-        } while (0);
-    }
-    expect: {
-        L: do {
-            continue L;
-        } while (0);
-    }
-}
-
-label_while: {
-    options = {
-        evaluate: true,
-        dead_code: true,
-        loops: true,
-    }
-    input: {
-        function f() {
-            L: while (0) continue L;
-        }
-    }
-    expect_exact: "function f(){L:;}"
-}

test/compress/issue-1943.js

@@ -1,31 +0,0 @@
-operator: {
-    input: {
-        a. //comment
-        typeof
-    }
-    expect_exact: "a.typeof;"
-}
-
-name: {
-    input: {
-        a. //comment
-        b
-    }
-    expect_exact: "a.b;"
-}
-
-keyword: {
-    input: {
-        a. //comment
-        default
-    }
-    expect_exact: "a.default;"
-}
-
-atom: {
-    input: {
-        a. //comment
-        true
-    }
-    expect_exact: "a.true;"
-}

test/compress/issue-208.js

@@ -1,70 +0,0 @@
-do_not_update_lhs: {
-    options = {
-        global_defs: { DEBUG: 0 }
-    }
-    input: {
-        DEBUG++;
-        DEBUG += 1;
-        DEBUG = 1;
-    }
-    expect: {
-        DEBUG++;
-        DEBUG += 1;
-        DEBUG = 1;
-    }
-}
-
-do_update_rhs: {
-    options = {
-        global_defs: { DEBUG: 0 }
-    }
-    input: {
-        MY_DEBUG = DEBUG;
-        MY_DEBUG += DEBUG;
-    }
-    expect: {
-        MY_DEBUG = 0;
-        MY_DEBUG += 0;
-    }
-}
-
-mixed: {
-    options = {
-        evaluate: true,
-        global_defs: {
-            DEBUG: 0,
-            ENV: 1,
-            FOO: 2,
-        }
-    }
-    input: {
-        var ENV = 3;
-        var FOO = 4;
-        f(ENV * 10);
-        --FOO;
-        DEBUG = 1;
-        DEBUG++;
-        DEBUG += 1;
-        f(DEBUG);
-        x = DEBUG;
-    }
-    expect: {
-        var ENV = 3;
-        var FOO = 4;
-        f(10);
-        --FOO;
-        DEBUG = 1;
-        DEBUG++;
-        DEBUG += 1;
-        f(0);
-        x = 0;
-    }
-    expect_warnings: [
-        'WARN: global_defs ENV redefined [test/compress/issue-208.js:41,12]',
-        'WARN: global_defs FOO redefined [test/compress/issue-208.js:42,12]',
-        'WARN: global_defs FOO redefined [test/compress/issue-208.js:44,10]',
-        'WARN: global_defs DEBUG redefined [test/compress/issue-208.js:45,8]',
-        'WARN: global_defs DEBUG redefined [test/compress/issue-208.js:46,8]',
-        'WARN: global_defs DEBUG redefined [test/compress/issue-208.js:47,8]',
-    ]
-}

test/compress/issue-281.js

@@ -1,493 +0,0 @@
-collapse_vars_constants: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        inline: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        function f1(x) {
-            var a = 4, b = x.prop, c = 5, d = sideeffect1(), e = sideeffect2();
-            return b + (function() { return d - a * e - c; })();
-        }
-        function f2(x) {
-            var a = 4, b = x.prop, c = 5, not_used = sideeffect1(), e = sideeffect2();
-            return b + (function() { return -a * e - c; })();
-        }
-    }
-    expect: {
-        function f1(x) {
-            var b = x.prop, d = sideeffect1(), e = sideeffect2();
-            return b + (d - 4 * e - 5);
-        }
-        function f2(x) {
-            var b = x.prop;
-            sideeffect1();
-            return b + (-4 * sideeffect2() - 5);
-        }
-    }
-}
-
-modified: {
-    options = {
-        collapse_vars: true,
-        inline: true,
-        unused: true,
-    }
-    input: {
-        function f5(b) {
-            var a = function() {
-                return b;
-            }();
-            return b++ + a;
-        }
-        console.log(f5(1));
-    }
-    expect: {
-        function f5(b) {
-            var a = b;
-            return b++ + a;
-        }
-        console.log(f5(1));
-    }
-    expect_stdout: "2"
-}
-
-ref_scope: {
-    options = {
-        collapse_vars: true,
-        inline: true,
-        unused: true,
-    }
-    input: {
-        console.log(function() {
-            var a = 1, b = 2, c = 3;
-            var a = c++, b = b /= a;
-            return function() {
-                return a;
-            }() + b;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var a = 1, b = 2, c = 3;
-            b = b /= a = c++;
-            return a + b;
-        }());
-    }
-    expect_stdout: true
-}
-
-safe_undefined: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        inline: true,
-        unsafe: false,
-        unused: true,
-    }
-    mangle = {}
-    input: {
-        var a, c;
-        console.log(function(undefined) {
-            return function() {
-                if (a)
-                    return b;
-                if (c)
-                    return d;
-            };
-        }(1)());
-    }
-    expect: {
-        var a, c;
-        console.log(a ? b : c ? d : void 0);
-    }
-    expect_stdout: true
-}
-
-negate_iife_3: {
-    options = {
-        conditionals: true,
-        expression: true,
-        inline: true,
-        negate_iife: true,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        t ? console.log(true) : console.log(false);
-    }
-}
-
-negate_iife_3_off: {
-    options = {
-        conditionals: true,
-        expression: true,
-        inline: true,
-        negate_iife: false,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        t ? console.log(true) : console.log(false);
-    }
-}
-
-negate_iife_4: {
-    options = {
-        conditionals: true,
-        expression: true,
-        inline: true,
-        negate_iife: true,
-        sequences: true,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        t ? console.log(true) : console.log(false), void console.log("something");
-    }
-}
-
-negate_iife_5: {
-    options = {
-        conditionals: true,
-        expression: true,
-        inline: true,
-        negate_iife: true,
-        sequences: true,
-    }
-    input: {
-        if ((function(){ return t })()) {
-            foo(true);
-        } else {
-            bar(false);
-        }
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        t ? foo(true) : bar(false), void console.log("something");
-    }
-}
-
-negate_iife_5_off: {
-    options = {
-        conditionals: true,
-        expression: true,
-        inline: true,
-        negate_iife: false,
-        sequences: true,
-    };
-    input: {
-        if ((function(){ return t })()) {
-            foo(true);
-        } else {
-            bar(false);
-        }
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        t ? foo(true) : bar(false), void console.log("something");
-    }
-}
-
-issue_1254_negate_iife_true: {
-    options = {
-        expression: true,
-        inline: true,
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: 'void console.log("test");'
-    expect_stdout: true
-}
-
-issue_1254_negate_iife_nested: {
-    options = {
-        expression: true,
-        inline: true,
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()()()()();
-    }
-    expect_exact: '(void console.log("test"))()()();'
-}
-
-negate_iife_issue_1073: {
-    options = {
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        negate_iife: true,
-        reduce_vars: true,
-        sequences: true,
-        unused: true,
-    };
-    input: {
-        new (function(a) {
-            return function Foo() {
-                this.x = a;
-                console.log(this);
-            };
-        }(7))();
-    }
-    expect: {
-        new function() {
-            this.x = 7,
-            console.log(this);
-        }();
-    }
-    expect_stdout: true
-}
-
-issue_1288_side_effects: {
-    options = {
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        negate_iife: true,
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    };
-    input: {
-        if (w) ;
-        else {
-            (function f() {})();
-        }
-        if (!x) {
-            (function() {
-                x = {};
-            })();
-        }
-        if (y)
-            (function() {})();
-        else
-            (function(z) {
-                return z;
-            })(0);
-    }
-    expect: {
-        w;
-        x || (x = {});
-        y;
-    }
-}
-
-inner_var_for_in_1: {
-    options = {
-        evaluate: true,
-        inline: true,
-        reduce_vars: true,
-    }
-    input: {
-        function f() {
-            var a = 1, b = 2;
-            for (b in (function() {
-                return x(a, b, c);
-            })()) {
-                var c = 3, d = 4;
-                x(a, b, c, d);
-            }
-            x(a, b, c, d);
-        }
-    }
-    expect: {
-        function f() {
-            var a = 1, b = 2;
-            for (b in x(1, b, c)) {
-                var c = 3, d = 4;
-                x(1, b, c, d);
-            }
-            x(1, b, c, d);
-        }
-    }
-}
-
-issue_1595_3: {
-    options = {
-        evaluate: true,
-        inline: true,
-        passes: 2,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        (function f(a) {
-            return g(a + 1);
-        })(2);
-    }
-    expect: {
-        g(3);
-    }
-}
-
-issue_1758: {
-    options = {
-        inline: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(function(c) {
-            var undefined = 42;
-            return function() {
-                c--;
-                c--, c.toString();
-                return;
-            }();
-        }());
-    }
-    expect: {
-        console.log(function(c) {
-            var undefined = 42;
-            return c--, c--, void c.toString();
-        }());
-    }
-    expect_stdout: "undefined"
-}
-wrap_iife: {
-    options = {
-        inline: true,
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: 'void console.log("test");'
-}
-
-wrap_iife_in_expression: {
-    options = {
-        inline: true,
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        foo = (function () {
-            return bar();
-        })();
-    }
-    expect_exact: 'foo=bar();'
-}
-
-wrap_iife_in_return_call: {
-    options = {
-        inline: true,
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        (function() {
-            return (function() {
-                console.log('test')
-            })();
-        })()();
-    }
-    expect_exact: '(void console.log("test"))();'
-}
-
-pure_annotation_1: {
-    options = {
-        inline: true,
-        side_effects: true,
-    }
-    input: {
-        /*@__PURE__*/(function() {
-            console.log("hello");
-        }());
-    }
-    expect_exact: ""
-}
-
-pure_annotation_2: {
-    options = {
-        collapse_vars: true,
-        inline: true,
-        side_effects: true,
-    }
-    input: {
-        /*@__PURE__*/(function(n) {
-            console.log("hello", n);
-        }(42));
-    }
-    expect_exact: ""
-}
-
-drop_fargs: {
-    options = {
-        cascade: true,
-        inline: true,
-        keep_fargs: false,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var a = 1;
-        !function(a_1) {
-            a++;
-        }(a++ + (a && a.var));
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        ++a && a.var, a++;
-        console.log(a);
-    }
-    expect_stdout: "3"
-}
-
-keep_fargs: {
-    options = {
-        cascade: true,
-        inline: true,
-        keep_fargs: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var a = 1;
-        !function(a_1) {
-            a++;
-        }(a++ + (a && a.var));
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        ++a && a.var, a++;
-        console.log(a);
-    }
-    expect_stdout: "3"
-}

test/compress/issue-368.js

@@ -1,55 +0,0 @@
-collapse: {
-    options = {
-        cascade: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f1() {
-            var a;
-            a = typeof b === 'function' ? b() : b;
-            return a !== undefined && c();
-        }
-        function f2(b) {
-            var a;
-            b = c();
-            a = typeof b === 'function' ? b() : b;
-            return 'stirng' == typeof a && d();
-        }
-        function f3(c) {
-            var a;
-            a = b(a / 2);
-            if (a < 0) {
-                a++;
-                ++c;
-                return c / 2;
-            }
-        }
-        function f4(c) {
-            var a;
-            a = b(a / 2);
-            if (a < 0) {
-                a++;
-                c++;
-                return c / 2;
-            }
-        }
-    }
-    expect: {
-        function f1() {
-            return void 0 !== ('function' === typeof b ? b() : b) && c();
-        }
-        function f2(b) {
-            return b = c(), 'stirng' == typeof ('function' === typeof b ? b() : b) && d();
-        }
-        function f3(c) {
-            var a;
-            if ((a = b(a / 2)) < 0) return a++, ++c / 2;
-        }
-        function f4(c) {
-            var a;
-            if ((a = b(a / 2)) < 0) return a++, ++c / 2;
-        }
-    }
-}

test/compress/issue-597.js

@@ -6,7 +6,7 @@ NaN_and_Infinity_must_have_parens: {
     }
     expect: {
         (1/0).toString();
-        NaN.toString();
+        (0/0).toString();
     }
 }
 
@@ -23,135 +23,3 @@ NaN_and_Infinity_should_not_be_replaced_when_they_are_redefined: {
         NaN.toString();
     }
 }
-
-NaN_and_Infinity_must_have_parens_evaluate: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        (123456789 / 0).toString();
-        (+"foo").toString();
-    }
-    expect: {
-        (1/0).toString();
-        NaN.toString();
-    }
-}
-
-NaN_and_Infinity_should_not_be_replaced_when_they_are_redefined_evaluate: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        var Infinity, NaN;
-        (123456789 / 0).toString();
-        (+"foo").toString();
-    }
-    expect: {
-        var Infinity, NaN;
-        (1/0).toString();
-        (0/0).toString();
-    }
-}
-
-beautify_off_1: {
-    options = {
-        evaluate: true,
-    }
-    beautify = {
-        beautify: false,
-    }
-    input: {
-        var NaN;
-        console.log(
-            null,
-            undefined,
-            Infinity,
-            NaN,
-            Infinity * undefined,
-            Infinity.toString(),
-            NaN.toString(),
-            (Infinity * undefined).toString()
-        );
-    }
-    expect_exact: "var NaN;console.log(null,void 0,1/0,NaN,0/0,(1/0).toString(),NaN.toString(),(0/0).toString());"
-    expect_stdout: true
-}
-
-beautify_off_2: {
-    options = {
-        evaluate: true,
-    }
-    beautify = {
-        beautify: false,
-    }
-    input: {
-        console.log(
-            null.toString(),
-            undefined.toString()
-        );
-    }
-    expect_exact: "console.log(null.toString(),(void 0).toString());"
-}
-
-beautify_on_1: {
-    options = {
-        evaluate: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        var NaN;
-        console.log(
-            null,
-            undefined,
-            Infinity,
-            NaN,
-            Infinity * undefined,
-            Infinity.toString(),
-            NaN.toString(),
-            (Infinity * undefined).toString()
-        );
-    }
-    expect_exact: [
-        "var NaN;",
-        "",
-        "console.log(null, void 0, 1 / 0, NaN, 0 / 0, (1 / 0).toString(), NaN.toString(), (0 / 0).toString());",
-    ]
-    expect_stdout: true
-}
-
-beautify_on_2: {
-    options = {
-        evaluate: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        console.log(
-            null.toString(),
-            undefined.toString()
-        );
-    }
-    expect_exact: "console.log(null.toString(), (void 0).toString());"
-}
-
-issue_1724: {
-    input: {
-        var a = 0;
-        ++a % Infinity | Infinity ? a++ : 0;
-        console.log(a);
-    }
-    expect_exact: "var a=0;++a%(1/0)|1/0?a++:0;console.log(a);"
-    expect_stdout: "2"
-}
-
-issue_1725: {
-    input: {
-        ([].length === 0) % Infinity ? console.log("PASS") : console.log("FAIL");
-    }
-    expect_exact: '(0===[].length)%(1/0)?console.log("PASS"):console.log("FAIL");'
-    expect_stdout: "PASS"
-}

test/compress/issue-640.js

@@ -1,320 +0,0 @@
-cond_5: {
-    options = {
-        conditionals: true,
-        expression: true,
-    }
-    input: {
-        if (some_condition()) {
-            if (some_other_condition()) {
-                do_something();
-            } else {
-                alternate();
-            }
-        } else {
-            alternate();
-        }
-
-        if (some_condition()) {
-            if (some_other_condition()) {
-                do_something();
-            }
-        }
-    }
-    expect: {
-        some_condition() && some_other_condition() ? do_something() : alternate();
-        if (some_condition() && some_other_condition()) do_something();
-    }
-}
-
-dead_code_const_annotation_regex: {
-    options = {
-        booleans     : true,
-        conditionals : true,
-        dead_code    : true,
-        evaluate     : true,
-        expression   : true,
-        loops        : true,
-    }
-    input: {
-        var unused;
-        // @constraint this shouldn't be a constant
-        var CONST_FOO_ANN = false;
-        if (CONST_FOO_ANN) {
-            console.log("reachable");
-        }
-    }
-    expect: {
-        var unused;
-        var CONST_FOO_ANN = !1;
-        if (CONST_FOO_ANN) console.log('reachable');
-    }
-    expect_stdout: true
-}
-
-drop_console_2: {
-    options = {
-        drop_console: true,
-        expression: true,
-    }
-    input: {
-        console.log('foo');
-        console.log.apply(console, arguments);
-    }
-    expect: {
-        // with regular compression these will be stripped out as well
-        void 0;
-        void 0;
-    }
-}
-
-drop_value: {
-    options = {
-        expression: true,
-        side_effects: true,
-    }
-    input: {
-        (1, [2, foo()], 3, {a:1, b:bar()});
-    }
-    expect: {
-        foo(), {a:1, b:bar()};
-    }
-}
-
-wrongly_optimized: {
-    options = {
-        conditionals: true,
-        booleans: true,
-        evaluate: true,
-        expression: true,
-    }
-    input: {
-        function func() {
-            foo();
-        }
-        if (func() || true) {
-            bar();
-        }
-    }
-    expect: {
-        function func() {
-            foo();
-        }
-        // TODO: optimize to `func(), bar()`
-        if (func(), !0) bar();
-    }
-}
-
-negate_iife_1: {
-    options = {
-        expression: true,
-        negate_iife: true,
-    }
-    input: {
-        (function(){ stuff() })();
-    }
-    expect: {
-        (function(){ stuff() })();
-    }
-}
-
-negate_iife_3: {
-    options = {
-        conditionals: true,
-        expression: true,
-        negate_iife: true,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-}
-
-negate_iife_3_off: {
-    options = {
-        conditionals: true,
-        expression: true,
-        negate_iife: false,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-}
-
-negate_iife_4: {
-    options = {
-        conditionals: true,
-        expression: true,
-        negate_iife: true,
-        sequences: true,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true), function(){
-            console.log("something");
-        }();
-    }
-}
-
-negate_iife_5: {
-    options = {
-        conditionals: true,
-        expression: true,
-        negate_iife: true,
-        sequences: true,
-    }
-    input: {
-        if ((function(){ return t })()) {
-            foo(true);
-        } else {
-            bar(false);
-        }
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
-            console.log("something");
-        }();
-    }
-}
-
-negate_iife_5_off: {
-    options = {
-        conditionals: true,
-        expression: true,
-        negate_iife: false,
-        sequences: true,
-    };
-    input: {
-        if ((function(){ return t })()) {
-            foo(true);
-        } else {
-            bar(false);
-        }
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
-            console.log("something");
-        }();
-    }
-}
-
-issue_1254_negate_iife_true: {
-    options = {
-        expression: true,
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: '(function(){return function(){console.log("test")}})()();'
-    expect_stdout: true
-}
-
-issue_1254_negate_iife_nested: {
-    options = {
-        expression: true,
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()()()()();
-    }
-    expect_exact: '(function(){return function(){console.log("test")}})()()()()();'
-    expect_stdout: true
-}
-
-conditional: {
-    options = {
-        expression: true,
-        pure_funcs: [ "pure" ],
-        side_effects: true,
-    }
-    input: {
-        pure(1 | a() ? 2 & b() : 7 ^ c());
-        pure(1 | a() ? 2 & b() : 5);
-        pure(1 | a() ? 4 : 7 ^ c());
-        pure(1 | a() ? 4 : 5);
-        pure(3 ? 2 & b() : 7 ^ c());
-        pure(3 ? 2 & b() : 5);
-        pure(3 ? 4 : 7 ^ c());
-        pure(3 ? 4 : 5);
-    }
-    expect: {
-        1 | a() ? b() : c();
-        1 | a() && b();
-        1 | a() || c();
-        a();
-        3 ? b() : c();
-        3 && b();
-        3 || c();
-        pure(3 ? 4 : 5);
-    }
-}
-
-limit_1: {
-    options = {
-        expression: true,
-        sequences: 3,
-    }
-    input: {
-        a;
-        b;
-        c;
-        d;
-        e;
-        f;
-        g;
-        h;
-        i;
-        j;
-        k;
-    }
-    expect: {
-        // Turned into a single return statement
-        // so it can no longer be split into lines
-        a,b,c,d,e,f,g,h,i,j,k;
-    }
-}
-
-iife: {
-    options = {
-        expression: true,
-        sequences: true,
-    }
-    input: {
-        x = 42;
-        (function a() {})();
-        !function b() {}();
-        ~function c() {}();
-        +function d() {}();
-        -function e() {}();
-        void function f() {}();
-        typeof function g() {}();
-    }
-    expect: {
-        x = 42, function a() {}(), function b() {}(), function c() {}(),
-        function d() {}(), function e() {}(), function f() {}(), typeof function g() {}();
-    }
-}

test/compress/issue-747.js

@@ -1,45 +0,0 @@
-dont_reuse_prop: {
-    mangle = {
-        properties: {
-            regex: /asd/,
-        },
-    }
-    input: {
-        "aaaaaaaaaabbbbb";
-        var obj = {};
-        obj.a = 123;
-        obj.asd = 256;
-        console.log(obj.a);
-    }
-    expect: {
-        "aaaaaaaaaabbbbb";
-        var obj = {};
-        obj.a = 123;
-        obj.b = 256;
-        console.log(obj.a);
-    }
-    expect_stdout: "123"
-}
-
-unmangleable_props_should_always_be_reserved: {
-    mangle = {
-        properties: {
-            regex: /asd/,
-        },
-    }
-    input: {
-        "aaaaaaaaaabbbbb";
-        var obj = {};
-        obj.asd = 256;
-        obj.a = 123;
-        console.log(obj.a);
-    }
-    expect: {
-        "aaaaaaaaaabbbbb";
-        var obj = {};
-        obj.b = 256;
-        obj.a = 123;
-        console.log(obj.a);
-    }
-    expect_stdout: "123"
-}

test/compress/issue-751.js

@@ -1,29 +0,0 @@
-negate_booleans_1: {
-    options = {
-        comparisons: true
-    };
-    input: {
-        var a = !a || !b || !c || !d || !e || !f;
-    }
-    expect: {
-        var a = !(a && b && c && d && e && f);
-    }
-}
-
-negate_booleans_2: {
-    options = {
-        comparisons: true
-    };
-    input: {
-        var match = !x &&       // should not touch this one
-            (!z || c) &&
-            (!k || d) &&
-            the_stuff();
-    }
-    expect: {
-        var match = !x &&
-            (!z || c) &&
-            (!k || d) &&
-            the_stuff();
-    }
-}

test/compress/issue-782.js

@@ -1,27 +0,0 @@
-remove_redundant_sequence_items: {
-    options = { side_effects: true };
-    input: {
-        (0, 1, eval)();
-        (0, 1, logThis)();
-        (0, 1, _decorators.logThis)();
-    }
-    expect: {
-        (0, eval)();
-        logThis();
-        (0, _decorators.logThis)();
-    }
-}
-
-dont_remove_this_binding_sequence: {
-    options = { side_effects: true };
-    input: {
-        (0, eval)();
-        (0, logThis)();
-        (0, _decorators.logThis)();
-    }
-    expect: {
-        (0, eval)();
-        logThis();
-        (0, _decorators.logThis)();
-    }
-}

test/compress/issue-892.js

@@ -1,33 +0,0 @@
-dont_mangle_arguments: {
-    mangle = {
-    };
-    options = {
-        sequences     : true,
-        properties    : true,
-        dead_code     : true,
-        drop_debugger : true,
-        conditionals  : true,
-        comparisons   : true,
-        evaluate      : true,
-        booleans      : true,
-        loops         : true,
-        unused        : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        keep_fnames   : false,
-        hoist_vars    : true,
-        if_return     : true,
-        join_vars     : true,
-        cascade       : true,
-        side_effects  : true,
-        negate_iife   : false
-    };
-    input: {
-        (function(){
-            var arguments = arguments, not_arguments = 9;
-            console.log(not_arguments, arguments);
-        })(5,6,7);
-    }
-    expect_exact: "(function(){var arguments=arguments,o=9;console.log(o,arguments)})(5,6,7);"
-    expect_stdout: true
-}

test/compress/issue-913.js

@@ -1,20 +0,0 @@
-keep_var_for_in: {
-    options = {
-        hoist_vars: true,
-        unused: true
-    };
-    input: {
-        (function(obj){
-            var foo = 5;
-            for (var i in obj)
-                return foo;
-        })();
-    }
-    expect: {
-        (function(obj){
-            var i, foo = 5;
-            for (i in obj)
-                return foo;
-        })();
-    }
-}

test/compress/issue-973.js

@@ -1,97 +0,0 @@
-this_binding_conditionals: {
-    options = {
-        conditionals: true,
-        evaluate    : true
-    };
-    input: {
-        (1 && a)();
-        (0 || a)();
-        (0 || 1 && a)();
-        (1 ? a : 0)();
-
-        (1 && a.b)();
-        (0 || a.b)();
-        (0 || 1 && a.b)();
-        (1 ? a.b : 0)();
-
-        (1 && a[b])();
-        (0 || a[b])();
-        (0 || 1 && a[b])();
-        (1 ? a[b] : 0)();
-
-        (1 && eval)();
-        (0 || eval)();
-        (0 || 1 && eval)();
-        (1 ? eval : 0)();
-    }
-    expect: {
-        a();
-        a();
-        a();
-        a();
-
-        (0, a.b)();
-        (0, a.b)();
-        (0, a.b)();
-        (0, a.b)();
-
-        (0, a[b])();
-        (0, a[b])();
-        (0, a[b])();
-        (0, a[b])();
-
-        (0, eval)();
-        (0, eval)();
-        (0, eval)();
-        (0, eval)();
-    }
-}
-
-this_binding_collapse_vars: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    };
-    input: {
-        var c = a; c();
-        var d = a.b; d();
-        var e = eval; e();
-    }
-    expect: {
-        a();
-        (0, a.b)();
-        (0, eval)();
-    }
-}
-
-this_binding_side_effects: {
-    options = {
-        side_effects : true
-    };
-    input: {
-        (function (foo) {
-            (0, foo)();
-            (0, foo.bar)();
-            (0, eval)('console.log(foo);');
-        }());
-        (function (foo) {
-            var eval = console;
-            (0, foo)();
-            (0, foo.bar)();
-            (0, eval)('console.log(foo);');
-        }());
-    }
-    expect: {
-        (function (foo) {
-            foo();
-            (0, foo.bar)();
-            (0, eval)('console.log(foo);');
-        }());
-        (function (foo) {
-            var eval = console;
-            foo();
-            (0, foo.bar)();
-            (0, eval)('console.log(foo);');
-        }());
-    }
-}

test/compress/issue-976.js

@@ -1,89 +0,0 @@
-eval_collapse_vars: {
-    options = {
-        collapse_vars:true, sequences:false, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    };
-    input: {
-        function f1() {
-            var e = 7;
-            var s = "abcdef";
-            var i = 2;
-            var eval = console.log.bind(console);
-            var x = s.charAt(i++);
-            var y = s.charAt(i++);
-            var z = s.charAt(i++);
-            eval(x, y, z, e);
-        }
-        function p1() { var a = foo(), b = bar(), eval = baz(); return a + b + eval; }
-        function p2() { var a = foo(), b = bar(), eval = baz; return a + b + eval(); }
-        (function f2(eval) {
-            var a = 2;
-            console.log(a - 5);
-            eval("console.log(a);");
-        })(eval);
-    }
-    expect: {
-        function f1() {
-            var e = 7,
-                s = "abcdef",
-                i = 2,
-                eval = console.log.bind(console),
-                x = s.charAt(i++),
-                y = s.charAt(i++),
-                z = s.charAt(i++);
-            eval(x, y, z, e);
-        }
-        function p1() { return foo() + bar() + baz(); }
-        function p2() { var a = foo(), b = bar(), eval = baz; return a + b + eval(); }
-        (function f2(eval) {
-            var a = 2;
-            console.log(a - 5);
-            eval("console.log(a);");
-        })(eval);
-    }
-    expect_stdout: true
-}
-
-eval_unused: {
-    options = { unused: true, keep_fargs: false };
-    input: {
-        function f1(a, eval, c, d, e) {
-            return a('c') + eval;
-        }
-        function f2(a, b, c, d, e) {
-            return a + eval('c');
-        }
-        function f3(a, eval, c, d, e) {
-            return a + eval('c');
-        }
-    }
-    expect: {
-        function f1(a, eval) {
-            return a('c') + eval;
-        }
-        function f2(a, b, c, d, e) {
-            return a + eval('c');
-        }
-        function f3(a, eval, c, d, e) {
-            return a + eval('c');
-        }
-    }
-}
-
-eval_mangle: {
-    mangle = {
-    };
-    input: {
-        function f1(a, eval, c, d, e) {
-            return a('c') + eval;
-        }
-        function f2(a, b, c, d, e) {
-            return a + eval('c');
-        }
-        function f3(a, eval, c, d, e) {
-            return a + eval('c');
-        }
-    }
-    expect_exact: 'function f1(n,c,e,a,f){return n("c")+c}function f2(a,b,c,d,e){return a+eval("c")}function f3(a,eval,c,d,e){return a+eval("c")}'
-}

test/compress/issue-979.js

@@ -1,89 +0,0 @@
-issue979_reported: {
-    options = {
-        sequences:true, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    }
-    input: {
-        function f1() {
-            if (a == 1 || b == 2) {
-                foo();
-            }
-        }
-        function f2() {
-            if (!(a == 1 || b == 2)) {
-            }
-            else {
-                foo();
-            }
-        }
-    }
-    expect: {
-        function f1() {
-            1!=a&&2!=b||foo();
-        }
-        function f2() {
-            1!=a&&2!=b||foo();
-        }
-    }
-}
-
-issue979_test_negated_is_best: {
-    options = {
-        sequences:true, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    }
-    input: {
-        function f3() {
-            if (a == 1 | b == 2) {
-                foo();
-            }
-        }
-        function f4() {
-            if (!(a == 1 | b == 2)) {
-            }
-            else {
-                foo();
-            }
-        }
-        function f5() {
-            if (a == 1 && b == 2) {
-                foo();
-            }
-        }
-        function f6() {
-            if (!(a == 1 && b == 2)) {
-            }
-            else {
-                foo();
-            }
-        }
-        function f7() {
-            if (a == 1 || b == 2) {
-                foo();
-            }
-            else {
-                return bar();
-            }
-        }
-    }
-    expect: {
-        function f3() {
-            1==a|2==b&&foo();
-        }
-        function f4() {
-            1==a|2==b&&foo();
-        }
-        function f5() {
-            1==a&&2==b&&foo();
-        }
-        function f6() {
-            1!=a||2!=b||foo();
-        }
-        function f7() {
-            if(1!=a&&2!=b)return bar();foo()
-        }
-    }
-}
-

test/compress/labels.js

@@ -9,7 +9,6 @@ labels_1: {
     expect: {
         foo || console.log("bar");
     }
-    expect_stdout: true
 }
 
 labels_2: {
@@ -41,7 +40,6 @@ labels_3: {
         for (var i = 0; i < 5; ++i)
             i < 3 || console.log(i);
     }
-    expect_stdout: true
 }
 
 labels_4: {
@@ -56,7 +54,6 @@ labels_4: {
         for (var i = 0; i < 5; ++i)
             i < 3 || console.log(i);
     }
-    expect_stdout: true
 }
 
 labels_5: {

test/compress/loops.js

@@ -121,332 +121,3 @@ drop_if_else_break_4: {
         for (; bar() && (x(), y(), foo());) baz(), z(), k();
     }
 }
-
-parse_do_while_with_semicolon: {
-    options = { loops: false };
-    input: {
-        do {
-            x();
-        } while (false);y()
-    }
-    expect: {
-        do x(); while (false);y();
-    }
-}
-
-parse_do_while_without_semicolon: {
-    options = { loops: false };
-    input: {
-        do {
-            x();
-        } while (false)y()
-    }
-    expect: {
-        do x(); while (false);y();
-    }
-}
-
-evaluate: {
-    options = {
-        loops: true,
-        dead_code: true,
-        evaluate: true,
-    };
-    input: {
-        while (true) {
-            a();
-        }
-        while (false) {
-            b();
-        }
-        do {
-            c();
-        } while (true);
-        do {
-            d();
-        } while (false);
-    }
-    expect: {
-        for(;;)
-            a();
-        for(;;)
-            c();
-        d();
-    }
-}
-
-issue_1532: {
-    options = {
-        evaluate: true,
-        loops: true,
-    }
-    input: {
-        function f(x, y) {
-            do {
-                if (x) break;
-                foo();
-            } while (false);
-        }
-    }
-    expect: {
-        function f(x, y) {
-            do {
-                if (x) break;
-                foo();
-            } while (false);
-        }
-    }
-}
-
-issue_186: {
-    beautify = {
-        beautify: false,
-        ie8: false,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: 'var x=3;if(foo())do{do{alert(x)}while(--x)}while(x);else bar();'
-}
-
-issue_186_ie8: {
-    beautify = {
-        beautify: false,
-        ie8: true,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: 'var x=3;if(foo()){do{do{alert(x)}while(--x)}while(x)}else bar();'
-}
-
-issue_186_beautify: {
-    beautify = {
-        beautify: true,
-        ie8: false,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: [
-        'var x = 3;',
-        '',
-        'if (foo()) do {',
-        '    do {',
-        '        alert(x);',
-        '    } while (--x);',
-        '} while (x); else bar();',
-    ]
-}
-
-issue_186_beautify_ie8: {
-    beautify = {
-        beautify: true,
-        ie8: true,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: [
-        'var x = 3;',
-        '',
-        'if (foo()) {',
-        '    do {',
-        '        do {',
-        '            alert(x);',
-        '        } while (--x);',
-        '    } while (x);',
-        '} else bar();',
-    ]
-}
-
-issue_186_bracketize: {
-    beautify = {
-        beautify: false,
-        bracketize: true,
-        ie8: false,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: 'var x=3;if(foo()){do{do{alert(x)}while(--x)}while(x)}else{bar()}'
-}
-
-issue_186_bracketize_ie8: {
-    beautify = {
-        beautify: false,
-        bracketize: true,
-        ie8: true,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: 'var x=3;if(foo()){do{do{alert(x)}while(--x)}while(x)}else{bar()}'
-}
-
-issue_186_beautify_bracketize: {
-    beautify = {
-        beautify: true,
-        bracketize: true,
-        ie8: false,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: [
-        'var x = 3;',
-        '',
-        'if (foo()) {',
-        '    do {',
-        '        do {',
-        '            alert(x);',
-        '        } while (--x);',
-        '    } while (x);',
-        '} else {',
-        '    bar();',
-        '}',
-    ]
-}
-
-issue_186_beautify_bracketize_ie8: {
-    beautify = {
-        beautify: true,
-        bracketize: true,
-        ie8: true,
-    }
-    input: {
-        var x = 3;
-        if (foo())
-            do
-                do
-                    alert(x);
-                while (--x);
-            while (x);
-        else
-            bar();
-    }
-    expect_exact: [
-        'var x = 3;',
-        '',
-        'if (foo()) {',
-        '    do {',
-        '        do {',
-        '            alert(x);',
-        '        } while (--x);',
-        '    } while (x);',
-        '} else {',
-        '    bar();',
-        '}',
-    ]
-}
-
-issue_1648: {
-    options = {
-        join_vars: true,
-        loops: true,
-        passes: 2,
-        sequences: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            x();
-            var b = 1;
-            while (1);
-        }
-    }
-    expect_exact: "function f(){for(x();1;);}"
-}
-
-do_switch: {
-    options = {
-        evaluate: true,
-        loops: true,
-    }
-    input: {
-        do {
-            switch (a) {
-              case b:
-                continue;
-            }
-        } while (false);
-    }
-    expect: {
-        do {
-            switch (a) {
-              case b:
-                continue;
-            }
-        } while (false);
-    }
-}
-
-in_parenthesis_1: {
-    input: {
-        for (("foo" in {});0;);
-    }
-    expect_exact: 'for(("foo"in{});0;);'
-}
-
-in_parenthesis_2: {
-    input: {
-        for ((function(){ "foo" in {}; });0;);
-    }
-    expect_exact: 'for(function(){"foo"in{}};0;);'
-}

test/compress/max_line_len.js

@@ -1,39 +0,0 @@
-too_short: {
-    beautify = {
-        max_line_len: 10,
-    }
-    input: {
-        function f(a) {
-            return { c: 42, d: a(), e: "foo"};
-        }
-    }
-    expect_exact: [
-        'function f(a){',
-        'return{',
-        'c:42,',
-        'd:a(),',
-        'e:"foo"}}',
-    ]
-    expect_warnings: [
-        "WARN: Output exceeds 10 characters"
-    ]
-}
-
-just_enough: {
-    beautify = {
-        max_line_len: 14,
-    }
-    input: {
-        function f(a) {
-            return { c: 42, d: a(), e: "foo"};
-        }
-    }
-    expect_exact: [
-        'function f(a){',
-        'return{c:42,',
-        'd:a(),e:"foo"}',
-        '}',
-    ]
-    expect_warnings: [
-    ]
-}

test/compress/negate-iife.js

@@ -10,173 +10,56 @@ negate_iife_1: {
     }
 }
 
-negate_iife_1_off: {
-    options = {
-        negate_iife: false,
-    };
-    input: {
-        (function(){ stuff() })();
-    }
-    expect_exact: '(function(){stuff()})();'
-}
-
 negate_iife_2: {
     options = {
-        inline: true,
-        negate_iife: true,
+        negate_iife: true
     };
     input: {
+        (function(){ return {} })().x = 10; // should not transform this one
+    }
+    expect: {
         (function(){ return {} })().x = 10;
     }
-    expect_exact: "({}).x=10;"
-}
-
-negate_iife_2_side_effects: {
-    options = {
-        inline: true,
-        negate_iife: true,
-        side_effects: true,
-    }
-    input: {
-        (function(){ return {} })().x = 10;
-    }
-    expect_exact: "({}).x=10;"
 }
 
 negate_iife_3: {
     options = {
         negate_iife: true,
-        conditionals: true
     };
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true);
-    }
-}
-
-negate_iife_3_evaluate: {
-    options = {
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        negate_iife: true,
-    }
     input: {
         (function(){ return true })() ? console.log(true) : console.log(false);
     }
     expect: {
-        console.log(true);
+        !function(){ return true }() ? console.log(false) : console.log(true);
     }
-    expect_stdout: true
 }
 
-negate_iife_3_side_effects: {
+negate_iife_3: {
     options = {
-        conditionals: true,
         negate_iife: true,
-        side_effects: true,
-    }
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true);
-    }
-}
-
-negate_iife_3_off: {
-    options = {
-        negate_iife: false,
-        conditionals: true,
+        sequences: true
     };
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-    }
-    expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true);
-    }
-}
-
-negate_iife_3_off_evaluate: {
-    options = {
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        negate_iife: false,
-    }
     input: {
         (function(){ return true })() ? console.log(true) : console.log(false);
+        (function(){
+            console.log("something");
+        })();
     }
     expect: {
-        console.log(true);
+        !function(){ return true }() ? console.log(false) : console.log(true), function(){
+            console.log("something");
+        }();
     }
-    expect_stdout: true
 }
 
 negate_iife_4: {
-    options = {
-        negate_iife: true,
-        conditionals: true,
-        sequences: true
-    };
-    input: {
-        (function(){ return t })() ? console.log(true) : console.log(false);
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true), function(){
-            console.log("something");
-        }();
-    }
-}
-
-sequence_off: {
-    options = {
-        negate_iife: false,
-        conditionals: true,
-        sequences: true,
-        passes: 2,
-    };
-    input: {
-        function f() {
-            (function(){ return t })() ? console.log(true) : console.log(false);
-            (function(){
-                console.log("something");
-            })();
-        }
-        function g() {
-            (function(){
-                console.log("something");
-            })();
-            (function(){ return t })() ? console.log(true) : console.log(false);
-        }
-    }
-    expect: {
-        function f() {
-            !function(){ return t }() ? console.log(false) : console.log(true), function(){
-                console.log("something");
-            }();
-        }
-        function g() {
-            (function(){
-                console.log("something");
-            })(), function(){ return t }() ? console.log(true) : console.log(false);
-        }
-    }
-}
-
-negate_iife_5: {
     options = {
         negate_iife: true,
         sequences: true,
         conditionals: true,
     };
     input: {
-        if ((function(){ return t })()) {
+        if ((function(){ return true })()) {
             foo(true);
         } else {
             bar(false);
@@ -186,233 +69,8 @@ negate_iife_5: {
         })();
     }
     expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
+        !function(){ return true }() ? bar(false) : foo(true), function(){
             console.log("something");
         }();
     }
 }
-
-negate_iife_5_off: {
-    options = {
-        negate_iife: false,
-        sequences: true,
-        conditionals: true,
-    };
-    input: {
-        if ((function(){ return t })()) {
-            foo(true);
-        } else {
-            bar(false);
-        }
-        (function(){
-            console.log("something");
-        })();
-    }
-    expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
-            console.log("something");
-        }();
-    }
-}
-
-negate_iife_nested: {
-    options = {
-        negate_iife: true,
-        sequences: true,
-        conditionals: true,
-    };
-    input: {
-        function Foo(f) {
-            this.f = f;
-        }
-        new Foo(function() {
-            (function(x) {
-                (function(y) {
-                    console.log(y);
-                })(x);
-            })(7);
-        }).f();
-    }
-    expect: {
-        function Foo(f) {
-            this.f = f;
-        }
-        new Foo(function() {
-            !function(x) {
-                !function(y) {
-                    console.log(y);
-                }(x);
-            }(7);
-        }).f();
-    }
-    expect_stdout: true
-}
-
-negate_iife_nested_off: {
-    options = {
-        negate_iife: false,
-        sequences: true,
-        conditionals: true,
-    };
-    input: {
-        function Foo(f) {
-            this.f = f;
-        }
-        new Foo(function() {
-            (function(x) {
-                (function(y) {
-                    console.log(y);
-                })(x);
-            })(7);
-        }).f();
-    }
-    expect: {
-        function Foo(f) {
-            this.f = f;
-        }
-        new Foo(function() {
-            (function(x) {
-                (function(y) {
-                    console.log(y);
-                })(x);
-            })(7);
-        }).f();
-    }
-    expect_stdout: true
-}
-
-negate_iife_issue_1073: {
-    options = {
-        negate_iife: true,
-        sequences: true,
-        conditionals: true,
-    };
-    input: {
-        new (function(a) {
-            return function Foo() {
-                this.x = a;
-                console.log(this);
-            };
-        }(7))();
-    }
-    expect: {
-        new (function(a) {
-            return function Foo() {
-                this.x = a,
-                console.log(this);
-            };
-        }(7))();
-    }
-    expect_stdout: true
-}
-
-issue_1254_negate_iife_false: {
-    options = {
-        negate_iife: false,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: '(function(){return function(){console.log("test")}})()();'
-    expect_stdout: true
-}
-
-issue_1254_negate_iife_true: {
-    options = {
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: '!function(){return function(){console.log("test")}}()();'
-    expect_stdout: true
-}
-
-issue_1254_negate_iife_nested: {
-    options = {
-        negate_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()()()()();
-    }
-    expect_exact: '!function(){return function(){console.log("test")}}()()()()();'
-    expect_stdout: true
-}
-
-issue_1288: {
-    options = {
-        conditionals: true,
-        negate_iife: true,
-        side_effects: false,
-    };
-    input: {
-        if (w) ;
-        else {
-            (function f() {})();
-        }
-        if (!x) {
-            (function() {
-                x = {};
-            })();
-        }
-        if (y)
-            (function() {})();
-        else
-            (function(z) {
-                return z;
-            })(0);
-    }
-    expect: {
-        w || !function f() {}();
-        x || !function() {
-            x = {};
-        }();
-        y ? !function() {}() : !function(z) {
-            return z;
-        }(0);
-    }
-}
-
-issue_1288_side_effects: {
-    options = {
-        conditionals: true,
-        negate_iife: true,
-        side_effects: true,
-    }
-    input: {
-        if (w) ;
-        else {
-            (function f() {})();
-        }
-        if (!x) {
-            (function() {
-                x = {};
-            })();
-        }
-        if (y)
-            (function() {})();
-        else
-            (function(z) {
-                return z;
-            })(0);
-    }
-    expect: {
-        w;
-        x || function() {
-            x = {};
-        }();
-        y;
-    }
-}

test/compress/new.js

@@ -1,100 +0,0 @@
-new_statement: {
-    input: {
-        new x(1);
-        new x(1)(2);
-        new x(1)(2)(3);
-        new new x(1);
-        new new x(1)(2);
-        new (new x(1))(2);
-        (new new x(1))(2);
-    }
-    expect_exact: "new x(1);new x(1)(2);new x(1)(2)(3);new new x(1);new new x(1)(2);new new x(1)(2);(new new x(1))(2);"
-}
-
-new_statements_2: {
-    input: {
-        new x;
-        new new x;
-        new new new x;
-        new true;
-        new (0);
-        new (!0);
-        new (bar = function(foo) {this.foo=foo;})(123);
-        new (bar = function(foo) {this.foo=foo;})();
-    }
-    expect_exact: "new x;new(new x);new(new(new x));new true;new 0;new(!0);new(bar=function(foo){this.foo=foo})(123);new(bar=function(foo){this.foo=foo});"
-}
-
-new_statements_3: {
-    input: {
-        new (function(foo){this.foo=foo;})(1);
-        new (function(foo){this.foo=foo;})();
-        new (function test(foo){this.foo=foo;})(1);
-        new (function test(foo){this.foo=foo;})();
-    }
-    expect_exact: "new function(foo){this.foo=foo}(1);new function(foo){this.foo=foo};new function test(foo){this.foo=foo}(1);new function test(foo){this.foo=foo};"
-}
-
-new_with_rewritten_true_value: {
-    options = { booleans: true }
-    input: {
-        new true;
-    }
-    expect_exact: "new(!0);"
-}
-
-new_with_many_parameters: {
-    input: {
-        new foo.bar("baz");
-        new x(/123/, 456);
-    }
-    expect_exact: 'new foo.bar("baz");new x(/123/,456);'
-}
-
-new_constructor_with_unary_arguments: {
-    input: {
-        new x();
-        new x(-1);
-        new x(-1, -2);
-        new x(void 1, +2, -3, ~4, !5, --a, ++b, c--, d++, typeof e, delete f);
-        new (-1);     // should parse despite being invalid at runtime.
-        new (-1)();   // should parse despite being invalid at runtime.
-        new (-1)(-2); // should parse despite being invalid at runtime.
-    }
-    expect_exact: "new x;new x(-1);new x(-1,-2);new x(void 1,+2,-3,~4,!5,--a,++b,c--,d++,typeof e,delete f);new(-1);new(-1);new(-1)(-2);"
-}
-
-call_with_unary_arguments: {
-    input: {
-        x();
-        x(-1);
-        x(-1, -2);
-        x(void 1, +2, -3, ~4, !5, --a, ++b, c--, d++, typeof e, delete f);
-        (-1)();   // should parse despite being invalid at runtime.
-        (-1)(-2); // should parse despite being invalid at runtime.
-    }
-    expect_exact: "x();x(-1);x(-1,-2);x(void 1,+2,-3,~4,!5,--a,++b,c--,d++,typeof e,delete f);(-1)();(-1)(-2);"
-}
-
-new_with_unary_prefix: {
-    input: {
-        var bar = (+new Date()).toString(32);
-    }
-    expect_exact: 'var bar=(+new Date).toString(32);';
-}
-
-dot_parenthesis_1: {
-    input: {
-        console.log(new (Math.random().constructor) instanceof Number);
-    }
-    expect_exact: "console.log(new(Math.random().constructor)instanceof Number);"
-    expect_stdout: "true"
-}
-
-dot_parenthesis_2: {
-    input: {
-        console.log(typeof new function(){Math.random()}.constructor);
-    }
-    expect_exact: "console.log(typeof new function(){Math.random()}.constructor);"
-    expect_stdout: "function"
-}

test/compress/node_version.js

@@ -1,38 +0,0 @@
-eval_let_6: {
-    input: {
-        eval("let a;");
-        console.log();
-    }
-    expect: {
-        eval("let a;");
-        console.log();
-    }
-    expect_stdout: ""
-    node_version: ">=6"
-}
-
-eval_let_4: {
-    input: {
-        eval("let a;");
-        console.log();
-    }
-    expect: {
-        eval("let a;");
-        console.log();
-    }
-    expect_stdout: SyntaxError("Block-scoped declarations (let, const, function, class) not yet supported outside strict mode")
-    node_version: "4"
-}
-
-eval_let_0: {
-    input: {
-        eval("let a;");
-        console.log();
-    }
-    expect: {
-        eval("let a;");
-        console.log();
-    }
-    expect_stdout: SyntaxError("Unexpected identifier")
-    node_version: "<=0.12"
-}

test/compress/numbers.js

@@ -1,204 +0,0 @@
-hex_numbers_in_parentheses_for_prototype_functions: {
-    input: {
-        (-2);
-        (-2).toFixed(0);
-
-        (2);
-        (2).toFixed(0);
-
-        (0.2);
-        (0.2).toFixed(0);
-
-        (0.00000002);
-        (0.00000002).toFixed(0);
-
-        (1000000000000000128);
-        (1000000000000000128).toFixed(0);
-    }
-    expect_exact: "-2;(-2).toFixed(0);2;2..toFixed(0);.2;.2.toFixed(0);2e-8;2e-8.toFixed(0);0xde0b6b3a7640080;(0xde0b6b3a7640080).toFixed(0);"
-}
-
-comparisons: {
-    options = {
-        comparisons: true,
-    }
-    input: {
-        console.log(
-            ~x === 42,
-            x % n === 42
-        );
-    }
-    expect: {
-        console.log(
-            42 == ~x,
-            x % n == 42
-        );
-    }
-}
-
-evaluate_1: {
-    options = {
-        evaluate: true,
-        unsafe_math: false,
-    }
-    input: {
-        console.log(
-            x + 1 + 2,
-            x * 1 * 2,
-            +x + 1 + 2,
-            1 + x + 2 + 3,
-            1 | x | 2 | 3,
-            1 + x-- + 2 + 3,
-            1 + (x*y + 2) + 3,
-            1 + (2 + x + 3),
-            1 + (2 + ~x + 3),
-            -y + (2 + ~x + 3),
-            1 & (2 & x & 3),
-            1 + (2 + (x |= 0) + 3)
-        );
-    }
-    expect: {
-        console.log(
-            x + 1 + 2,
-            1 * x * 2,
-            +x + 1 + 2,
-            1 + x + 2 + 3,
-            3 | x,
-            1 + x-- + 2 + 3,
-            x*y + 2 + 1 + 3,
-            1 + (2 + x + 3),
-            2 + ~x + 3 + 1,
-            -y + (2 + ~x + 3),
-            0 & x,
-            2 + (x |= 0) + 3 + 1
-        );
-    }
-}
-
-evaluate_2: {
-    options = {
-        evaluate: true,
-        unsafe_math: true,
-    }
-    input: {
-        console.log(
-            x + 1 + 2,
-            x * 1 * 2,
-            +x + 1 + 2,
-            1 + x + 2 + 3,
-            1 | x | 2 | 3,
-            1 + x-- + 2 + 3,
-            1 + (x*y + 2) + 3,
-            1 + (2 + x + 3),
-            1 & (2 & x & 3),
-            1 + (2 + (x |= 0) + 3)
-        );
-    }
-    expect: {
-        console.log(
-            x + 1 + 2,
-            2 * x,
-            3 + +x,
-            1 + x + 2 + 3,
-            3 | x,
-            6 + x--,
-            6 + x*y,
-            1 + (2 + x + 3),
-            0 & x,
-            6 + (x |= 0)
-        );
-    }
-}
-
-evaluate_3: {
-    options = {
-        evaluate: true,
-        unsafe: true,
-        unsafe_math: true,
-    }
-    input: {
-        console.log(1 + Number(x) + 2);
-    }
-    expect: {
-        console.log(3 + +x);
-    }
-}
-
-evaluate_4: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        console.log(
-            1+ +a,
-            +a+1,
-            1+-a,
-            -a+1,
-            +a+ +b,
-            +a+-b,
-            -a+ +b,
-            -a+-b
-        );
-    }
-    expect: {
-        console.log(
-            +a+1,
-            +a+1,
-            1-a,
-            1-a,
-            +a+ +b,
-            +a-b,
-            -a+ +b,
-            -a-b
-        );
-    }
-}
-
-issue_1710: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        var x = {};
-        console.log((x += 1) + -x);
-    }
-    expect: {
-        var x = {};
-        console.log((x += 1) + -x);
-    }
-    expect_stdout: true
-}
-
-unary_binary_parenthesis: {
-    input: {
-        var v = [ 0, 1, NaN, Infinity, null, undefined, true, false, "", "foo", /foo/ ];
-        v.forEach(function(x) {
-            v.forEach(function(y) {
-                console.log(
-                    +(x*y),
-                    +(x/y),
-                    +(x%y),
-                    -(x*y),
-                    -(x/y),
-                    -(x%y)
-                );
-            });
-        });
-    }
-    expect: {
-        var v = [ 0, 1, NaN, 1/0, null, void 0, true, false, "", "foo", /foo/ ];
-        v.forEach(function(x) {
-            v.forEach(function(y) {
-                console.log(
-                    +x*y,
-                    +x/y,
-                    +x%y,
-                    -x*y,
-                    -x/y,
-                    -x%y
-                );
-            });
-        });
-    }
-    expect_stdout: true
-}

test/compress/properties.js

@@ -12,11 +12,8 @@ keep_properties: {
 
 dot_properties: {
     options = {
-        properties: true,
-    }
-    beautify = {
-        ie8: true,
-    }
+        properties: true
+    };
     input: {
         a["foo"] = "bar";
         a["if"] = "if";
@@ -38,10 +35,8 @@ dot_properties: {
 dot_properties_es5: {
     options = {
         properties: true,
-    }
-    beautify = {
-        ie8: false,
-    }
+        screw_ie8: true
+    };
     input: {
         a["foo"] = "bar";
         a["if"] = "if";
@@ -58,56 +53,7 @@ dot_properties_es5: {
     }
 }
 
-sub_properties: {
-    options = {
-        evaluate: true,
-        properties: true
-    };
-    input: {
-        a[0] = 0;
-        a["0"] = 1;
-        a[3.14] = 2;
-        a["3" + ".14"] = 3;
-        a["i" + "f"] = 4;
-        a["foo" + " bar"] = 5;
-        a[0 / 0] = 6;
-        a[null] = 7;
-        a[undefined] = 8;
-    }
-    expect: {
-        a[0] = 0;
-        a[0] = 1;
-        a[3.14] = 2;
-        a[3.14] = 3;
-        a.if = 4;
-        a["foo bar"] = 5;
-        a[NaN] = 6;
-        a[null] = 7;
-        a[void 0] = 8;
-    }
-}
-
-evaluate_array_length: {
-    options = {
-        properties: true,
-        unsafe: true,
-        evaluate: true
-    };
-    input: {
-        a = [1, 2, 3].length;
-        a = [1, 2, 3].join()["len" + "gth"];
-        a = [1, 2, b].length;
-        a = [1, 2, 3].join(b).length;
-    }
-    expect: {
-        a = 3;
-        a = 5;
-        a = [1, 2, b].length;
-        a = [1, 2, 3].join(b).length;
-    }
-}
-
-evaluate_string_length: {
+evaluate_length: {
     options = {
         properties: true,
         unsafe: true,
@@ -126,681 +72,3 @@ evaluate_string_length: {
         a = ("foo" + b).length;
     }
 }
-
-mangle_properties: {
-    mangle = {
-        properties: {
-            keep_quoted: false,
-        },
-    }
-    input: {
-        a["foo"] = "bar";
-        a.color = "red";
-        x = {"bar": 10};
-        a.run(x.bar, a.foo);
-        a['run']({color: "blue", foo: "baz"});
-    }
-    expect: {
-        a["a"] = "bar";
-        a.b = "red";
-        x = {o: 10};
-        a.r(x.o, a.a);
-        a['r']({b: "blue", a: "baz"});
-    }
-}
-
-mangle_unquoted_properties: {
-    options = {
-        properties: false
-    }
-    mangle = {
-        properties: {
-            keep_quoted: true,
-        },
-    }
-    beautify = {
-        beautify: false,
-        quote_style: 3,
-        keep_quoted_props: true,
-    }
-    input: {
-        a.top = 1;
-        function f1() {
-            a["foo"] = "bar";
-            a.color = "red";
-            a.stuff = 2;
-            x = {"bar": 10, size: 7};
-            a.size = 9;
-        }
-        function f2() {
-            a.foo = "bar";
-            a['color'] = "red";
-            x = {bar: 10, size: 7};
-            a.size = 9;
-            a.stuff = 3;
-        }
-    }
-    expect: {
-        a.a = 1;
-        function f1() {
-            a["foo"] = "bar";
-            a.color = "red";
-            a.r = 2;
-            x = {"bar": 10, b: 7};
-            a.b = 9;
-        }
-        function f2() {
-            a.foo = "bar";
-            a['color'] = "red";
-            x = {bar: 10, b: 7};
-            a.b = 9;
-            a.r = 3;
-        }
-    }
-}
-
-mangle_debug: {
-    mangle = {
-        properties: {
-            debug: "",
-        },
-    }
-    input: {
-        a.foo = "bar";
-        x = { baz: "ban" };
-    }
-    expect: {
-        a._$foo$_ = "bar";
-        x = { _$baz$_: "ban" };
-    }
-}
-
-mangle_debug_true: {
-    mangle = {
-        properties: {
-            debug: true,
-        },
-    }
-    input: {
-        a.foo = "bar";
-        x = { baz: "ban" };
-    }
-    expect: {
-        a._$foo$_ = "bar";
-        x = { _$baz$_: "ban" };
-    }
-}
-
-mangle_debug_suffix: {
-    mangle = {
-        properties: {
-            debug: "XYZ",
-        },
-    }
-    input: {
-        a.foo = "bar";
-        x = { baz: "ban" };
-    }
-    expect: {
-        a._$foo$XYZ_ = "bar";
-        x = { _$baz$XYZ_: "ban" };
-    }
-}
-
-mangle_debug_suffix_keep_quoted: {
-    options = {
-        properties: false
-    }
-    mangle = {
-        properties: {
-            debug: "XYZ",
-            keep_quoted: true,
-            reserved: [],
-        },
-    }
-    beautify = {
-        beautify: false,
-        quote_style: 3,
-        keep_quoted_props: true,
-    }
-    input: {
-        a.top = 1;
-        function f1() {
-            a["foo"] = "bar";
-            a.color = "red";
-            a.stuff = 2;
-            x = {"bar": 10, size: 7};
-            a.size = 9;
-        }
-        function f2() {
-            a.foo = "bar";
-            a['color'] = "red";
-            x = {bar: 10, size: 7};
-            a.size = 9;
-            a.stuff = 3;
-        }
-    }
-    expect: {
-        a._$top$XYZ_ = 1;
-        function f1() {
-            a["foo"] = "bar";
-            a.color = "red";
-            a._$stuff$XYZ_ = 2;
-            x = {"bar": 10, _$size$XYZ_: 7};
-            a._$size$XYZ_ = 9;
-        }
-        function f2() {
-            a.foo = "bar";
-            a['color'] = "red";
-            x = {bar: 10, _$size$XYZ_: 7};
-            a._$size$XYZ_ = 9;
-            a._$stuff$XYZ_ = 3;
-        }
-    }
-}
-
-first_256_chars_as_properties: {
-    beautify = {
-        ascii_only: true,
-    }
-    input: {
-        // Note: some of these unicode character keys are not visible on github.com
-        var o = {
-            "\0":0,"
":1,"":2,"":3,"":4,"":5,"":6,"":7,"\b":8,
-            "\t":9,"\n":10,"\v":11,"\f":12,"\r":13,"":14,"":15,"":16,"":17,
-            "":18,"":19,"":20,"":21,"":22,"":23,"":24,"":25,"":26,
-            "":27,"":28,"":29,"":30,"":31," ":32,"!":33,'"':34,"#":35,
-            $:36,"%":37,"&":38,"'":39,"(":40,")":41,"*":42,"+":43,",":44,
-            "-":45,".":46,"/":47,"0":48,"1":49,"2":50,"3":51,"4":52,"5":53,"6":54,"7":55,
-            "8":56,"9":57,":":58,";":59,"<":60,"=":61,">":62,"?":63,"@":64,A:65,
-            B:66,C:67,D:68,E:69,F:70,G:71,H:72,I:73,J:74,K:75,L:76,M:77,N:78,
-            O:79,P:80,Q:81,R:82,S:83,T:84,U:85,V:86,W:87,X:88,Y:89,Z:90,"[":91,
-            "\\":92,"]":93,"^":94,_:95,"`":96,a:97,b:98,c:99,d:100,e:101,
-            f:102,g:103,h:104,i:105,j:106,k:107,l:108,m:109,n:110,o:111,p:112,
-            q:113,r:114,s:115,t:116,u:117,v:118,w:119,x:120,y:121,z:122,"{":123,
-            "|":124,"}":125,"~":126,"":127,"€":128,"":129,"‚":130,"ƒ":131,
-            "„":132,"…":133,"†":134,"‡":135,"ˆ":136,"‰":137,"Š":138,"‹":139,
-            "Œ":140,"":141,"Ž":142,"":143,"":144,"‘":145,"’":146,"“":147,
-            "”":148,"•":149,"–":150,"—":151,"˜":152,"™":153,"š":154,"›":155,
-            "œ":156,"":157,"ž":158,"Ÿ":159," ":160,"¡":161,"¢":162,"£":163,
-            "¤":164,"¥":165,"¦":166,"§":167,"¨":168,"©":169,"ª":170,"«":171,
-            "¬":172,"­":173,"®":174,"¯":175,"°":176,"±":177,"²":178,"³":179,
-            "´":180,"µ":181,"¶":182,"·":183,"¸":184,"¹":185,"º":186,"»":187,
-            "¼":188,"½":189,"¾":190,"¿":191,"À":192,"Á":193,"Â":194,"Ã":195,
-            "Ä":196,"Å":197,"Æ":198,"Ç":199,"È":200,"É":201,"Ê":202,"Ë":203,
-            "Ì":204,"Í":205,"Î":206,"Ï":207,"Ð":208,"Ñ":209,"Ò":210,"Ó":211,
-            "Ô":212,"Õ":213,"Ö":214,"×":215,"Ø":216,"Ù":217,"Ú":218,"Û":219,
-            "Ü":220,"Ý":221,"Þ":222,"ß":223,"à":224,"á":225,"â":226,"ã":227,
-            "ä":228,"å":229,"æ":230,"ç":231,"è":232,"é":233,"ê":234,"ë":235,
-            "ì":236,"í":237,"î":238,"ï":239,"ð":240,"ñ":241,"ò":242,"ó":243,
-            "ô":244,"õ":245,"ö":246,"÷":247,"ø":248,"ù":249,"ú":250,"û":251,
-            "ü":252,"ý":253,"þ":254,"ÿ":255
-        };
-    }
-    expect: {
-        var o = {
-            "\0":0,"\x01":1,"\x02":2,"\x03":3,"\x04":4,"\x05":5,"\x06":6,
-            "\x07":7,"\b":8,"\t":9,"\n":10,"\v":11,"\f":12,"\r":13,"\x0e":14,
-            "\x0f":15,"\x10":16,"\x11":17,"\x12":18,"\x13":19,"\x14":20,"\x15":21,
-            "\x16":22,"\x17":23,"\x18":24,"\x19":25,"\x1a":26,"\x1b":27,"\x1c":28,
-            "\x1d":29,"\x1e":30,"\x1f":31," ":32,"!":33,'"':34,"#":35,$:36,
-            "%":37,"&":38,"'":39,"(":40,")":41,"*":42,"+":43,",":44,"-":45,
-            ".":46,"/":47,0:48,1:49,2:50,3:51,4:52,5:53,6:54,7:55,8:56,9:57,
-            ":":58,";":59,"<":60,"=":61,">":62,"?":63,"@":64,A:65,B:66,C:67,
-            D:68,E:69,F:70,G:71,H:72,I:73,J:74,K:75,L:76,M:77,N:78,O:79,P:80,
-            Q:81,R:82,S:83,T:84,U:85,V:86,W:87,X:88,Y:89,Z:90,"[":91,"\\":92,
-            "]":93,"^":94,_:95,"`":96,a:97,b:98,c:99,d:100,e:101,f:102,g:103,
-            h:104,i:105,j:106,k:107,l:108,m:109,n:110,o:111,p:112,q:113,r:114,
-            s:115,t:116,u:117,v:118,w:119,x:120,y:121,z:122,"{":123,"|":124,
-            "}":125,"~":126,"\x7f":127,"\x80":128,"\x81":129,"\x82":130,"\x83":131,
-            "\x84":132,"\x85":133,"\x86":134,"\x87":135,"\x88":136,"\x89":137,
-            "\x8a":138,"\x8b":139,"\x8c":140,"\x8d":141,"\x8e":142,"\x8f":143,
-            "\x90":144,"\x91":145,"\x92":146,"\x93":147,"\x94":148,"\x95":149,
-            "\x96":150,"\x97":151,"\x98":152,"\x99":153,"\x9a":154,"\x9b":155,
-            "\x9c":156,"\x9d":157,"\x9e":158,"\x9f":159,"\xa0":160,"\xa1":161,
-            "\xa2":162,"\xa3":163,"\xa4":164,"\xa5":165,"\xa6":166,"\xa7":167,
-            "\xa8":168,"\xa9":169,"\xaa":170,"\xab":171,"\xac":172,"\xad":173,
-            "\xae":174,"\xaf":175,"\xb0":176,"\xb1":177,"\xb2":178,"\xb3":179,
-            "\xb4":180,"\xb5":181,"\xb6":182,"\xb7":183,"\xb8":184,"\xb9":185,
-            "\xba":186,"\xbb":187,"\xbc":188,"\xbd":189,"\xbe":190,"\xbf":191,
-            "\xc0":192,"\xc1":193,"\xc2":194,"\xc3":195,"\xc4":196,"\xc5":197,
-            "\xc6":198,"\xc7":199,"\xc8":200,"\xc9":201,"\xca":202,"\xcb":203,
-            "\xcc":204,"\xcd":205,"\xce":206,"\xcf":207,"\xd0":208,"\xd1":209,
-            "\xd2":210,"\xd3":211,"\xd4":212,"\xd5":213,"\xd6":214,"\xd7":215,
-            "\xd8":216,"\xd9":217,"\xda":218,"\xdb":219,"\xdc":220,"\xdd":221,
-            "\xde":222,"\xdf":223,"\xe0":224,"\xe1":225,"\xe2":226,"\xe3":227,
-            "\xe4":228,"\xe5":229,"\xe6":230,"\xe7":231,"\xe8":232,"\xe9":233,
-            "\xea":234,"\xeb":235,"\xec":236,"\xed":237,"\xee":238,"\xef":239,
-            "\xf0":240,"\xf1":241,"\xf2":242,"\xf3":243,"\xf4":244,"\xf5":245,
-            "\xf6":246,"\xf7":247,"\xf8":248,"\xf9":249,"\xfa":250,"\xfb":251,
-            "\xfc":252,"\xfd":253,"\xfe":254,"\xff":255
-        };
-    }
-}
-
-first_256_unicode_chars_as_properties: {
-    input: {
-        var o = {
-            "\u0000":   0, "\u0001":   1, "\u0002":   2, "\u0003":   3, "\u0004":   4, "\u0005":   5,
-            "\u0006":   6, "\u0007":   7, "\u0008":   8, "\u0009":   9, "\u000A":  10, "\u000B":  11,
-            "\u000C":  12, "\u000D":  13, "\u000E":  14, "\u000F":  15, "\u0010":  16, "\u0011":  17,
-            "\u0012":  18, "\u0013":  19, "\u0014":  20, "\u0015":  21, "\u0016":  22, "\u0017":  23,
-            "\u0018":  24, "\u0019":  25, "\u001A":  26, "\u001B":  27, "\u001C":  28, "\u001D":  29,
-            "\u001E":  30, "\u001F":  31, "\u0020":  32, "\u0021":  33, "\u0022":  34, "\u0023":  35,
-            "\u0024":  36, "\u0025":  37, "\u0026":  38, "\u0027":  39, "\u0028":  40, "\u0029":  41,
-            "\u002A":  42, "\u002B":  43, "\u002C":  44, "\u002D":  45, "\u002E":  46, "\u002F":  47,
-            "\u0030":  48, "\u0031":  49, "\u0032":  50, "\u0033":  51, "\u0034":  52, "\u0035":  53,
-            "\u0036":  54, "\u0037":  55, "\u0038":  56, "\u0039":  57, "\u003A":  58, "\u003B":  59,
-            "\u003C":  60, "\u003D":  61, "\u003E":  62, "\u003F":  63, "\u0040":  64, "\u0041":  65,
-            "\u0042":  66, "\u0043":  67, "\u0044":  68, "\u0045":  69, "\u0046":  70, "\u0047":  71,
-            "\u0048":  72, "\u0049":  73, "\u004A":  74, "\u004B":  75, "\u004C":  76, "\u004D":  77,
-            "\u004E":  78, "\u004F":  79, "\u0050":  80, "\u0051":  81, "\u0052":  82, "\u0053":  83,
-            "\u0054":  84, "\u0055":  85, "\u0056":  86, "\u0057":  87, "\u0058":  88, "\u0059":  89,
-            "\u005A":  90, "\u005B":  91, "\u005C":  92, "\u005D":  93, "\u005E":  94, "\u005F":  95,
-            "\u0060":  96, "\u0061":  97, "\u0062":  98, "\u0063":  99, "\u0064": 100, "\u0065": 101,
-            "\u0066": 102, "\u0067": 103, "\u0068": 104, "\u0069": 105, "\u006A": 106, "\u006B": 107,
-            "\u006C": 108, "\u006D": 109, "\u006E": 110, "\u006F": 111, "\u0070": 112, "\u0071": 113,
-            "\u0072": 114, "\u0073": 115, "\u0074": 116, "\u0075": 117, "\u0076": 118, "\u0077": 119,
-            "\u0078": 120, "\u0079": 121, "\u007A": 122, "\u007B": 123, "\u007C": 124, "\u007D": 125,
-            "\u007E": 126, "\u007F": 127, "\u0080": 128, "\u0081": 129, "\u0082": 130, "\u0083": 131,
-            "\u0084": 132, "\u0085": 133, "\u0086": 134, "\u0087": 135, "\u0088": 136, "\u0089": 137,
-            "\u008A": 138, "\u008B": 139, "\u008C": 140, "\u008D": 141, "\u008E": 142, "\u008F": 143,
-            "\u0090": 144, "\u0091": 145, "\u0092": 146, "\u0093": 147, "\u0094": 148, "\u0095": 149,
-            "\u0096": 150, "\u0097": 151, "\u0098": 152, "\u0099": 153, "\u009A": 154, "\u009B": 155,
-            "\u009C": 156, "\u009D": 157, "\u009E": 158, "\u009F": 159, "\u00A0": 160, "\u00A1": 161,
-            "\u00A2": 162, "\u00A3": 163, "\u00A4": 164, "\u00A5": 165, "\u00A6": 166, "\u00A7": 167,
-            "\u00A8": 168, "\u00A9": 169, "\u00AA": 170, "\u00AB": 171, "\u00AC": 172, "\u00AD": 173,
-            "\u00AE": 174, "\u00AF": 175, "\u00B0": 176, "\u00B1": 177, "\u00B2": 178, "\u00B3": 179,
-            "\u00B4": 180, "\u00B5": 181, "\u00B6": 182, "\u00B7": 183, "\u00B8": 184, "\u00B9": 185,
-            "\u00BA": 186, "\u00BB": 187, "\u00BC": 188, "\u00BD": 189, "\u00BE": 190, "\u00BF": 191,
-            "\u00C0": 192, "\u00C1": 193, "\u00C2": 194, "\u00C3": 195, "\u00C4": 196, "\u00C5": 197,
-            "\u00C6": 198, "\u00C7": 199, "\u00C8": 200, "\u00C9": 201, "\u00CA": 202, "\u00CB": 203,
-            "\u00CC": 204, "\u00CD": 205, "\u00CE": 206, "\u00CF": 207, "\u00D0": 208, "\u00D1": 209,
-            "\u00D2": 210, "\u00D3": 211, "\u00D4": 212, "\u00D5": 213, "\u00D6": 214, "\u00D7": 215,
-            "\u00D8": 216, "\u00D9": 217, "\u00DA": 218, "\u00DB": 219, "\u00DC": 220, "\u00DD": 221,
-            "\u00DE": 222, "\u00DF": 223, "\u00E0": 224, "\u00E1": 225, "\u00E2": 226, "\u00E3": 227,
-            "\u00E4": 228, "\u00E5": 229, "\u00E6": 230, "\u00E7": 231, "\u00E8": 232, "\u00E9": 233,
-            "\u00EA": 234, "\u00EB": 235, "\u00EC": 236, "\u00ED": 237, "\u00EE": 238, "\u00EF": 239,
-            "\u00F0": 240, "\u00F1": 241, "\u00F2": 242, "\u00F3": 243, "\u00F4": 244, "\u00F5": 245,
-            "\u00F6": 246, "\u00F7": 247, "\u00F8": 248, "\u00F9": 249, "\u00FA": 250, "\u00FB": 251,
-            "\u00FC": 252, "\u00FD": 253, "\u00FE": 254, "\u00FF": 255
-        };
-    }
-    expect: {
-        var o = {
-            "\0":0,"\x01":1,"\x02":2,"\x03":3,"\x04":4,"\x05":5,"\x06":6,
-            "\x07":7,"\b":8,"\t":9,"\n":10,"\v":11,"\f":12,"\r":13,"\x0e":14,
-            "\x0f":15,"\x10":16,"\x11":17,"\x12":18,"\x13":19,"\x14":20,"\x15":21,
-            "\x16":22,"\x17":23,"\x18":24,"\x19":25,"\x1a":26,"\x1b":27,"\x1c":28,
-            "\x1d":29,"\x1e":30,"\x1f":31," ":32,"!":33,'"':34,"#":35,$:36,
-            "%":37,"&":38,"'":39,"(":40,")":41,"*":42,"+":43,",":44,"-":45,
-            ".":46,"/":47,0:48,1:49,2:50,3:51,4:52,5:53,6:54,7:55,8:56,9:57,
-            ":":58,";":59,"<":60,"=":61,">":62,"?":63,"@":64,A:65,B:66,C:67,
-            D:68,E:69,F:70,G:71,H:72,I:73,J:74,K:75,L:76,M:77,N:78,O:79,P:80,
-            Q:81,R:82,S:83,T:84,U:85,V:86,W:87,X:88,Y:89,Z:90,"[":91,"\\":92,
-            "]":93,"^":94,_:95,"`":96,a:97,b:98,c:99,d:100,e:101,f:102,g:103,
-            h:104,i:105,j:106,k:107,l:108,m:109,n:110,o:111,p:112,q:113,r:114,
-            s:115,t:116,u:117,v:118,w:119,x:120,y:121,z:122,"{":123,"|":124,
-            "}":125,"~":126,"\x7f":127,"\x80":128,"\x81":129,"\x82":130,"\x83":131,
-            "\x84":132,"\x85":133,"\x86":134,"\x87":135,"\x88":136,"\x89":137,
-            "\x8a":138,"\x8b":139,"\x8c":140,"\x8d":141,"\x8e":142,"\x8f":143,
-            "\x90":144,"\x91":145,"\x92":146,"\x93":147,"\x94":148,"\x95":149,
-            "\x96":150,"\x97":151,"\x98":152,"\x99":153,"\x9a":154,"\x9b":155,
-            "\x9c":156,"\x9d":157,"\x9e":158,"\x9f":159,"\xa0":160,"\xa1":161,
-            "\xa2":162,"\xa3":163,"\xa4":164,"\xa5":165,"\xa6":166,"\xa7":167,
-            "\xa8":168,"\xa9":169,"\xaa":170,"\xab":171,"\xac":172,"\xad":173,
-            "\xae":174,"\xaf":175,"\xb0":176,"\xb1":177,"\xb2":178,"\xb3":179,
-            "\xb4":180,"\xb5":181,"\xb6":182,"\xb7":183,"\xb8":184,"\xb9":185,
-            "\xba":186,"\xbb":187,"\xbc":188,"\xbd":189,"\xbe":190,"\xbf":191,
-            "\xc0":192,"\xc1":193,"\xc2":194,"\xc3":195,"\xc4":196,"\xc5":197,
-            "\xc6":198,"\xc7":199,"\xc8":200,"\xc9":201,"\xca":202,"\xcb":203,
-            "\xcc":204,"\xcd":205,"\xce":206,"\xcf":207,"\xd0":208,"\xd1":209,
-            "\xd2":210,"\xd3":211,"\xd4":212,"\xd5":213,"\xd6":214,"\xd7":215,
-            "\xd8":216,"\xd9":217,"\xda":218,"\xdb":219,"\xdc":220,"\xdd":221,
-            "\xde":222,"\xdf":223,"\xe0":224,"\xe1":225,"\xe2":226,"\xe3":227,
-            "\xe4":228,"\xe5":229,"\xe6":230,"\xe7":231,"\xe8":232,"\xe9":233,
-            "\xea":234,"\xeb":235,"\xec":236,"\xed":237,"\xee":238,"\xef":239,
-            "\xf0":240,"\xf1":241,"\xf2":242,"\xf3":243,"\xf4":244,"\xf5":245,
-            "\xf6":246,"\xf7":247,"\xf8":248,"\xf9":249,"\xfa":250,"\xfb":251,
-            "\xfc":252,"\xfd":253,"\xfe":254,"\xff":255
-        };
-    }
-}
-
-first_256_hex_chars_as_properties: {
-    input: {
-        var o = {
-            "\x00":   0, "\x01":   1, "\x02":   2, "\x03":   3, "\x04":   4, "\x05":   5,
-            "\x06":   6, "\x07":   7, "\x08":   8, "\x09":   9, "\x0A":  10, "\x0B":  11,
-            "\x0C":  12, "\x0D":  13, "\x0E":  14, "\x0F":  15, "\x10":  16, "\x11":  17,
-            "\x12":  18, "\x13":  19, "\x14":  20, "\x15":  21, "\x16":  22, "\x17":  23,
-            "\x18":  24, "\x19":  25, "\x1A":  26, "\x1B":  27, "\x1C":  28, "\x1D":  29,
-            "\x1E":  30, "\x1F":  31, "\x20":  32, "\x21":  33, "\x22":  34, "\x23":  35,
-            "\x24":  36, "\x25":  37, "\x26":  38, "\x27":  39, "\x28":  40, "\x29":  41,
-            "\x2A":  42, "\x2B":  43, "\x2C":  44, "\x2D":  45, "\x2E":  46, "\x2F":  47,
-            "\x30":  48, "\x31":  49, "\x32":  50, "\x33":  51, "\x34":  52, "\x35":  53,
-            "\x36":  54, "\x37":  55, "\x38":  56, "\x39":  57, "\x3A":  58, "\x3B":  59,
-            "\x3C":  60, "\x3D":  61, "\x3E":  62, "\x3F":  63, "\x40":  64, "\x41":  65,
-            "\x42":  66, "\x43":  67, "\x44":  68, "\x45":  69, "\x46":  70, "\x47":  71,
-            "\x48":  72, "\x49":  73, "\x4A":  74, "\x4B":  75, "\x4C":  76, "\x4D":  77,
-            "\x4E":  78, "\x4F":  79, "\x50":  80, "\x51":  81, "\x52":  82, "\x53":  83,
-            "\x54":  84, "\x55":  85, "\x56":  86, "\x57":  87, "\x58":  88, "\x59":  89,
-            "\x5A":  90, "\x5B":  91, "\x5C":  92, "\x5D":  93, "\x5E":  94, "\x5F":  95,
-            "\x60":  96, "\x61":  97, "\x62":  98, "\x63":  99, "\x64": 100, "\x65": 101,
-            "\x66": 102, "\x67": 103, "\x68": 104, "\x69": 105, "\x6A": 106, "\x6B": 107,
-            "\x6C": 108, "\x6D": 109, "\x6E": 110, "\x6F": 111, "\x70": 112, "\x71": 113,
-            "\x72": 114, "\x73": 115, "\x74": 116, "\x75": 117, "\x76": 118, "\x77": 119,
-            "\x78": 120, "\x79": 121, "\x7A": 122, "\x7B": 123, "\x7C": 124, "\x7D": 125,
-            "\x7E": 126, "\x7F": 127, "\x80": 128, "\x81": 129, "\x82": 130, "\x83": 131,
-            "\x84": 132, "\x85": 133, "\x86": 134, "\x87": 135, "\x88": 136, "\x89": 137,
-            "\x8A": 138, "\x8B": 139, "\x8C": 140, "\x8D": 141, "\x8E": 142, "\x8F": 143,
-            "\x90": 144, "\x91": 145, "\x92": 146, "\x93": 147, "\x94": 148, "\x95": 149,
-            "\x96": 150, "\x97": 151, "\x98": 152, "\x99": 153, "\x9A": 154, "\x9B": 155,
-            "\x9C": 156, "\x9D": 157, "\x9E": 158, "\x9F": 159, "\xA0": 160, "\xA1": 161,
-            "\xA2": 162, "\xA3": 163, "\xA4": 164, "\xA5": 165, "\xA6": 166, "\xA7": 167,
-            "\xA8": 168, "\xA9": 169, "\xAA": 170, "\xAB": 171, "\xAC": 172, "\xAD": 173,
-            "\xAE": 174, "\xAF": 175, "\xB0": 176, "\xB1": 177, "\xB2": 178, "\xB3": 179,
-            "\xB4": 180, "\xB5": 181, "\xB6": 182, "\xB7": 183, "\xB8": 184, "\xB9": 185,
-            "\xBA": 186, "\xBB": 187, "\xBC": 188, "\xBD": 189, "\xBE": 190, "\xBF": 191,
-            "\xC0": 192, "\xC1": 193, "\xC2": 194, "\xC3": 195, "\xC4": 196, "\xC5": 197,
-            "\xC6": 198, "\xC7": 199, "\xC8": 200, "\xC9": 201, "\xCA": 202, "\xCB": 203,
-            "\xCC": 204, "\xCD": 205, "\xCE": 206, "\xCF": 207, "\xD0": 208, "\xD1": 209,
-            "\xD2": 210, "\xD3": 211, "\xD4": 212, "\xD5": 213, "\xD6": 214, "\xD7": 215,
-            "\xD8": 216, "\xD9": 217, "\xDA": 218, "\xDB": 219, "\xDC": 220, "\xDD": 221,
-            "\xDE": 222, "\xDF": 223, "\xE0": 224, "\xE1": 225, "\xE2": 226, "\xE3": 227,
-            "\xE4": 228, "\xE5": 229, "\xE6": 230, "\xE7": 231, "\xE8": 232, "\xE9": 233,
-            "\xEA": 234, "\xEB": 235, "\xEC": 236, "\xED": 237, "\xEE": 238, "\xEF": 239,
-            "\xF0": 240, "\xF1": 241, "\xF2": 242, "\xF3": 243, "\xF4": 244, "\xF5": 245,
-            "\xF6": 246, "\xF7": 247, "\xF8": 248, "\xF9": 249, "\xFA": 250, "\xFB": 251,
-            "\xFC": 252, "\xFD": 253, "\xFE": 254, "\xFF": 255
-        };
-    }
-    expect: {
-        var o = {
-            "\0":0,"\x01":1,"\x02":2,"\x03":3,"\x04":4,"\x05":5,"\x06":6,
-            "\x07":7,"\b":8,"\t":9,"\n":10,"\v":11,"\f":12,"\r":13,"\x0e":14,
-            "\x0f":15,"\x10":16,"\x11":17,"\x12":18,"\x13":19,"\x14":20,"\x15":21,
-            "\x16":22,"\x17":23,"\x18":24,"\x19":25,"\x1a":26,"\x1b":27,"\x1c":28,
-            "\x1d":29,"\x1e":30,"\x1f":31," ":32,"!":33,'"':34,"#":35,$:36,
-            "%":37,"&":38,"'":39,"(":40,")":41,"*":42,"+":43,",":44,"-":45,
-            ".":46,"/":47,0:48,1:49,2:50,3:51,4:52,5:53,6:54,7:55,8:56,9:57,
-            ":":58,";":59,"<":60,"=":61,">":62,"?":63,"@":64,A:65,B:66,C:67,
-            D:68,E:69,F:70,G:71,H:72,I:73,J:74,K:75,L:76,M:77,N:78,O:79,P:80,
-            Q:81,R:82,S:83,T:84,U:85,V:86,W:87,X:88,Y:89,Z:90,"[":91,"\\":92,
-            "]":93,"^":94,_:95,"`":96,a:97,b:98,c:99,d:100,e:101,f:102,g:103,
-            h:104,i:105,j:106,k:107,l:108,m:109,n:110,o:111,p:112,q:113,r:114,
-            s:115,t:116,u:117,v:118,w:119,x:120,y:121,z:122,"{":123,"|":124,
-            "}":125,"~":126,"\x7f":127,"\x80":128,"\x81":129,"\x82":130,"\x83":131,
-            "\x84":132,"\x85":133,"\x86":134,"\x87":135,"\x88":136,"\x89":137,
-            "\x8a":138,"\x8b":139,"\x8c":140,"\x8d":141,"\x8e":142,"\x8f":143,
-            "\x90":144,"\x91":145,"\x92":146,"\x93":147,"\x94":148,"\x95":149,
-            "\x96":150,"\x97":151,"\x98":152,"\x99":153,"\x9a":154,"\x9b":155,
-            "\x9c":156,"\x9d":157,"\x9e":158,"\x9f":159,"\xa0":160,"\xa1":161,
-            "\xa2":162,"\xa3":163,"\xa4":164,"\xa5":165,"\xa6":166,"\xa7":167,
-            "\xa8":168,"\xa9":169,"\xaa":170,"\xab":171,"\xac":172,"\xad":173,
-            "\xae":174,"\xaf":175,"\xb0":176,"\xb1":177,"\xb2":178,"\xb3":179,
-            "\xb4":180,"\xb5":181,"\xb6":182,"\xb7":183,"\xb8":184,"\xb9":185,
-            "\xba":186,"\xbb":187,"\xbc":188,"\xbd":189,"\xbe":190,"\xbf":191,
-            "\xc0":192,"\xc1":193,"\xc2":194,"\xc3":195,"\xc4":196,"\xc5":197,
-            "\xc6":198,"\xc7":199,"\xc8":200,"\xc9":201,"\xca":202,"\xcb":203,
-            "\xcc":204,"\xcd":205,"\xce":206,"\xcf":207,"\xd0":208,"\xd1":209,
-            "\xd2":210,"\xd3":211,"\xd4":212,"\xd5":213,"\xd6":214,"\xd7":215,
-            "\xd8":216,"\xd9":217,"\xda":218,"\xdb":219,"\xdc":220,"\xdd":221,
-            "\xde":222,"\xdf":223,"\xe0":224,"\xe1":225,"\xe2":226,"\xe3":227,
-            "\xe4":228,"\xe5":229,"\xe6":230,"\xe7":231,"\xe8":232,"\xe9":233,
-            "\xea":234,"\xeb":235,"\xec":236,"\xed":237,"\xee":238,"\xef":239,
-            "\xf0":240,"\xf1":241,"\xf2":242,"\xf3":243,"\xf4":244,"\xf5":245,
-            "\xf6":246,"\xf7":247,"\xf8":248,"\xf9":249,"\xfa":250,"\xfb":251,
-            "\xfc":252,"\xfd":253,"\xfe":254,"\xff":255
-        };
-    }
-}
-
-native_prototype: {
-    options = {
-        unsafe_proto: true,
-    }
-    input: {
-        Array.prototype.splice.apply(a, [1, 2, b, c]);
-        Object.prototype.hasOwnProperty.call(d, "foo");
-        String.prototype.indexOf.call(e, "bar");
-    }
-    expect: {
-        [].splice.apply(a, [1, 2, b, c]);
-        ({}).hasOwnProperty.call(d, "foo");
-        "".indexOf.call(e, "bar");
-    }
-}
-
-accessor_boolean: {
-    input: {
-        var a = 1;
-        var b = {
-            get true() {
-                return a;
-            },
-            set false(c) {
-                a = c;
-            }
-        };
-        console.log(b.true, b.false = 2, b.true);
-    }
-    expect_exact: 'var a=1;var b={get true(){return a},set false(c){a=c}};console.log(b.true,b.false=2,b.true);'
-    expect_stdout: "1 2 2"
-}
-
-accessor_get_set: {
-    input: {
-        var a = 1;
-        var b = {
-            get set() {
-                return a;
-            },
-            set get(c) {
-                a = c;
-            }
-        };
-        console.log(b.set, b.get = 2, b.set);
-    }
-    expect_exact: 'var a=1;var b={get set(){return a},set get(c){a=c}};console.log(b.set,b.get=2,b.set);'
-    expect_stdout: "1 2 2"
-}
-
-accessor_null_undefined: {
-    input: {
-        var a = 1;
-        var b = {
-            get null() {
-                return a;
-            },
-            set undefined(c) {
-                a = c;
-            }
-        };
-        console.log(b.null, b.undefined = 2, b.null);
-    }
-    expect_exact: 'var a=1;var b={get null(){return a},set undefined(c){a=c}};console.log(b.null,b.undefined=2,b.null);'
-    expect_stdout: "1 2 2"
-}
-
-accessor_number: {
-    input: {
-        var a = 1;
-        var b = {
-            get 42() {
-                return a;
-            },
-            set 42(c) {
-                a = c;
-            }
-        };
-        console.log(b[42], b[42] = 2, b[42]);
-    }
-    expect_exact: 'var a=1;var b={get 42(){return a},set 42(c){a=c}};console.log(b[42],b[42]=2,b[42]);'
-    expect_stdout: "1 2 2"
-}
-
-accessor_string: {
-    input: {
-        var a = 1;
-        var b = {
-            get "a-b"() {
-                return a;
-            },
-            set "a-b"(c) {
-                a = c;
-            }
-        };
-        console.log(b["a-b"], b["a-b"] = 2, b["a-b"]);
-    }
-    expect_exact: 'var a=1;var b={get"a-b"(){return a},set"a-b"(c){a=c}};console.log(b["a-b"],b["a-b"]=2,b["a-b"]);'
-    expect_stdout: "1 2 2"
-}
-
-accessor_this: {
-    input: {
-        var a = 1;
-        var b = {
-            get this() {
-                return a;
-            },
-            set this(c) {
-                a = c;
-            }
-        };
-        console.log(b.this, b.this = 2, b.this);
-    }
-    expect_exact: 'var a=1;var b={get this(){return a},set this(c){a=c}};console.log(b.this,b.this=2,b.this);'
-    expect_stdout: "1 2 2"
-}
-
-issue_2208_1: {
-    options = {
-        inline: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        console.log({
-            p: function() {
-                return 42;
-            }
-        }.p());
-    }
-    expect: {
-        console.log(42);
-    }
-    expect_stdout: "42"
-}
-
-issue_2208_2: {
-    options = {
-        inline: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        console.log({
-            a: 42,
-            p: function() {
-                return this.a;
-            }
-        }.p());
-    }
-    expect: {
-        console.log({
-            a: 42,
-            p: function() {
-                return this.a;
-            }
-        }.p());
-    }
-    expect_stdout: "42"
-}
-
-issue_2208_3: {
-    options = {
-        inline: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        a = 42;
-        console.log({
-            p: function() {
-                return function() {
-                    return this.a;
-                }();
-            }
-        }.p());
-    }
-    expect: {
-        a = 42;
-        console.log(function() {
-            return this.a;
-        }());
-    }
-    expect_stdout: "42"
-}
-
-issue_2208_4: {
-    options = {
-        inline: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        function foo() {}
-        console.log({
-            a: foo(),
-            p: function() {
-                return 42;
-            }
-        }.p());
-    }
-    expect: {
-        function foo() {}
-        console.log((foo(), function() {
-            return 42;
-        })());
-    }
-    expect_stdout: "42"
-}
-
-issue_2208_5: {
-    options = {
-        inline: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        console.log({
-            p: "FAIL",
-            p: function() {
-                return 42;
-            }
-        }.p());
-    }
-    expect: {
-        console.log(42);
-    }
-    expect_stdout: "42"
-}
-
-issue_2256: {
-    options = {
-        side_effects: true,
-    }
-    mangle = {
-        properties: {
-            keep_quoted: true,
-        },
-    }
-    input: {
-        ({ "keep": 1 });
-        g.keep = g.change;
-    }
-    expect: {
-        g.keep = g.g;
-    }
-}

test/compress/pure_funcs.js

@@ -1,295 +0,0 @@
-array: {
-    options = {
-        pure_funcs: [ "Math.floor" ],
-        side_effects: true,
-    }
-    input: {
-        var a;
-        function f(b) {
-            Math.floor(a / b);
-            Math.floor(c / b);
-        }
-    }
-    expect: {
-        var a;
-        function f(b) {
-            c;
-        }
-    }
-}
-
-func: {
-    options = {
-        pure_funcs: function(node) {
-            return !~node.args[0].print_to_string().indexOf("a");
-        },
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            Math.floor(a / b);
-            Math.floor(c / b);
-        }
-    }
-    expect: {
-        function f(a, b) {
-            Math.floor(c / b);
-        }
-    }
-}
-
-side_effects: {
-    options = {
-        pure_funcs: [ "console.log" ],
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            console.log(a());
-            console.log(b);
-        }
-    }
-    expect: {
-        function f(a, b) {
-            a();
-        }
-    }
-}
-
-unused: {
-    options = {
-        pure_funcs: [ "pure" ],
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function foo() {
-            var u = pure(1);
-            var x = pure(2);
-            var y = pure(x);
-            var z = pure(pure(side_effects()));
-            return pure(3);
-        }
-    }
-    expect: {
-        function foo() {
-            side_effects();
-            return pure(3);
-        }
-    }
-}
-
-babel: {
-    options = {
-        pure_funcs: [ "_classCallCheck" ],
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function _classCallCheck(instance, Constructor) {
-            if (!(instance instanceof Constructor))
-                throw new TypeError("Cannot call a class as a function");
-        }
-        var Foo = function Foo() {
-            _classCallCheck(this, Foo);
-        };
-    }
-    expect: {
-        function _classCallCheck(instance, Constructor) {
-            if (!(instance instanceof Constructor))
-                throw new TypeError("Cannot call a class as a function");
-        }
-        var Foo = function() {
-        };
-    }
-}
-
-conditional: {
-    options = {
-        pure_funcs: [ "pure" ],
-        side_effects: true,
-    }
-    input: {
-        pure(1 | a() ? 2 & b() : 7 ^ c());
-        pure(1 | a() ? 2 & b() : 5);
-        pure(1 | a() ? 4 : 7 ^ c());
-        pure(1 | a() ? 4 : 5);
-        pure(3 ? 2 & b() : 7 ^ c());
-        pure(3 ? 2 & b() : 5);
-        pure(3 ? 4 : 7 ^ c());
-        pure(3 ? 4 : 5);
-    }
-    expect: {
-        1 | a() ? b() : c();
-        1 | a() && b();
-        1 | a() || c();
-        a();
-        3 ? b() : c();
-        3 && b();
-        3 || c();
-    }
-}
-
-relational: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        foo() in foo();
-        foo() instanceof bar();
-        foo() < "bar";
-        bar() > foo();
-        bar() != bar();
-        bar() !== "bar";
-        "bar" == foo();
-        "bar" === bar();
-        "bar" >= "bar";
-    }
-    expect: {
-        bar();
-        bar();
-        bar(), bar();
-        bar();
-        bar();
-    }
-}
-
-arithmetic: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        foo() + foo();
-        foo() - bar();
-        foo() * "bar";
-        bar() / foo();
-        bar() & bar();
-        bar() | "bar";
-        "bar" >> foo();
-        "bar" << bar();
-        "bar" >>> "bar";
-    }
-    expect: {
-        bar();
-        bar();
-        bar(), bar();
-        bar();
-        bar();
-    }
-}
-
-boolean_and: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        foo() && foo();
-        foo() && bar();
-        foo() && "bar";
-        bar() && foo();
-        bar() && bar();
-        bar() && "bar";
-        "bar" && foo();
-        "bar" && bar();
-        "bar" && "bar";
-    }
-    expect: {
-        foo() && bar();
-        bar();
-        bar() && bar();
-        bar();
-        "bar" && bar();
-    }
-}
-
-boolean_or: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        foo() || foo();
-        foo() || bar();
-        foo() || "bar";
-        bar() || foo();
-        bar() || bar();
-        bar() || "bar";
-        "bar" || foo();
-        "bar" || bar();
-        "bar" || "bar";
-    }
-    expect: {
-        foo() || bar();
-        bar();
-        bar() || bar();
-        bar();
-        "bar" || bar();
-    }
-}
-
-assign: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        var a;
-        function f(b) {
-            a = foo();
-            b *= 4 + foo();
-            c >>= 0 | foo();
-        }
-    }
-    expect: {
-        var a;
-        function f(b) {
-            a = foo();
-            b *= 4 + foo();
-            c >>= 0 | foo();
-        }
-    }
-}
-
-unary: {
-    options = {
-        pure_funcs: [ "foo" ],
-        side_effects :true,
-    }
-    input: {
-        typeof foo();
-        typeof bar();
-        typeof "bar";
-        void foo();
-        void bar();
-        void "bar";
-        delete a[foo()];
-        delete a[bar()];
-        delete a["bar"];
-        a[foo()]++;
-        a[bar()]++;
-        a["bar"]++;
-        --a[foo()];
-        --a[bar()];
-        --a["bar"];
-        ~foo();
-        ~bar();
-        ~"bar";
-    }
-    expect: {
-        bar();
-        bar();
-        delete a[foo()];
-        delete a[bar()];
-        delete a["bar"];
-        a[foo()]++;
-        a[bar()]++;
-        a["bar"]++;
-        --a[foo()];
-        --a[bar()];
-        --a["bar"];
-        bar();
-    }
-}

test/compress/pure_getters.js

@@ -1,601 +0,0 @@
-strict: {
-    options = {
-        pure_getters: "strict",
-        reduce_vars: false,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        c.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        undefined.prop;
-    }
-    expect: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        c.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        (void 0).prop;
-    }
-}
-
-strict_reduce_vars: {
-    options = {
-        pure_getters: "strict",
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        c.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        undefined.prop;
-    }
-    expect: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        (void 0).prop;
-    }
-}
-
-unsafe: {
-    options = {
-        pure_getters: true,
-        reduce_vars: false,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        c.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        undefined.prop;
-    }
-    expect: {
-        var a, b = null, c = {};
-        d;
-        null.prop;
-        (void 0).prop;
-        (void 0).prop;
-    }
-}
-
-unsafe_reduce_vars: {
-    options = {
-        pure_getters: true,
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        var a, b = null, c = {};
-        a.prop;
-        b.prop;
-        c.prop;
-        d.prop;
-        null.prop;
-        (void 0).prop;
-        undefined.prop;
-    }
-    expect: {
-        var a, b = null, c = {};
-        d;
-        null.prop;
-        (void 0).prop;
-        (void 0).prop;
-    }
-}
-
-chained: {
-    options = {
-        pure_getters: "strict",
-        side_effects: true,
-    }
-    input: {
-        a.b.c;
-    }
-    expect: {
-        a.b.c;
-    }
-}
-
-impure_getter_1: {
-    options = {
-        pure_getters: "strict",
-        side_effects: true,
-    }
-    input: {
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).a;
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).b;
-    }
-    expect: {
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).a;
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).b;
-    }
-    expect_stdout: "1"
-}
-
-impure_getter_2: {
-    options = {
-        pure_getters: true,
-        side_effects: true,
-    }
-    input: {
-        // will produce incorrect output because getter is not pure
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).a;
-        ({
-            get a() {
-                console.log(1);
-            },
-            b: 1
-        }).b;
-    }
-    expect: {}
-}
-
-issue_2110_1: {
-    options = {
-        cascade: true,
-        pure_getters: "strict",
-        sequences: true,
-        side_effects: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function f() {}
-            function g() {
-                return this;
-            }
-            f.g = g;
-            return f.g();
-        }
-        console.log(typeof f());
-    }
-    expect: {
-        function f() {
-            function f() {}
-            return f.g = function() {
-                return this;
-            }, f.g();
-        }
-        console.log(typeof f());
-    }
-    expect_stdout: "function"
-}
-
-issue_2110_2: {
-    options = {
-        collapse_vars: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            function f() {}
-            function g() {
-                return this;
-            }
-            f.g = g;
-            return f.g();
-        }
-        console.log(typeof f());
-    }
-    expect: {
-        function f() {
-            function f() {}
-            f.g = function() {
-                return this;
-            };
-            return f.g();
-        }
-        console.log(typeof f());
-    }
-    expect_stdout: "function"
-}
-
-set_immutable_1: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var a = 1;
-        a.foo += "";
-        if (a.foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect: {
-        1..foo += "";
-        if (1..foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect_stdout: "PASS"
-}
-
-set_immutable_2: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        var a = 1;
-        a.foo += "";
-        if (a.foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect: {
-        var a = 1;
-        a.foo += "", a.foo ? console.log("FAIL") : console.log("PASS");
-    }
-    expect_stdout: "PASS"
-}
-
-set_immutable_3: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        "use strict";
-        var a = 1;
-        a.foo += "";
-        if (a.foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect: {
-        "use strict";
-        1..foo += "";
-        if (1..foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect_stdout: true
-}
-
-set_immutable_4: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        toplevel: true,
-    }
-    input: {
-        "use strict";
-        var a = 1;
-        a.foo += "";
-        if (a.foo) console.log("FAIL");
-        else console.log("PASS");
-    }
-    expect: {
-        "use strict";
-        var a = 1;
-        a.foo += "", a.foo ? console.log("FAIL") : console.log("PASS");
-    }
-    expect_stdout: true
-}
-
-set_mutable_1: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function a() {
-            a.foo += "";
-            if (a.foo) console.log("PASS");
-            else console.log("FAIL");
-        }();
-    }
-    expect: {
-        !function a() {
-            if (a.foo += "") console.log("PASS");
-            else console.log("FAIL");
-        }();
-    }
-    expect_stdout: "PASS"
-}
-
-set_mutable_2: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        pure_getters: "strict",
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        !function a() {
-            a.foo += "";
-            if (a.foo) console.log("PASS");
-            else console.log("FAIL");
-        }();
-    }
-    expect: {
-        !function a() {
-            (a.foo += "") ? console.log("PASS") : console.log("FAIL");
-        }();
-    }
-    expect_stdout: "PASS"
-}
-
-issue_2313_1: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        pure_getters: "strict",
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        if (x().y().z) {
-            console.log(3);
-        }
-    }
-    expect: {
-        function x() {
-            return console.log(1), {
-                y: function() {
-                    return console.log(2), {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++,
-        x().y().z && console.log(3);
-    }
-    expect_stdout: [
-        "1",
-        "2",
-        "1",
-        "2",
-    ]
-}
-
-issue_2313_2: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        pure_getters: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        if (x().y().z) {
-            console.log(3);
-        }
-    }
-    expect: {
-        function x() {
-            return console.log(1), {
-                y: function() {
-                    return console.log(2), {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++,
-        x().y().z && console.log(3);
-    }
-    expect_stdout: [
-        "1",
-        "2",
-        "1",
-        "2",
-    ]
-}
-
-issue_2313_3: {
-    options = {
-        collapse_vars: true,
-        conditionals: true,
-        pure_getters: "strict",
-    }
-    input: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        if (x().y().z) {
-            console.log(3);
-        }
-    }
-    expect: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        x().y().z && console.log(3);
-    }
-    expect_stdout: [
-        "1",
-        "2",
-        "1",
-        "2",
-    ]
-}
-
-issue_2313_4: {
-    options = {
-        collapse_vars: true,
-        conditionals: true,
-        pure_getters: true,
-    }
-    input: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        if (x().y().z) {
-            console.log(3);
-        }
-    }
-    expect: {
-        function x() {
-            console.log(1);
-            return {
-                y: function() {
-                    console.log(2);
-                    return {
-                        z: 0
-                    };
-                }
-            };
-        }
-        x().y().z++;
-        x().y().z && console.log(3);
-    }
-    expect_stdout: [
-        "1",
-        "2",
-        "1",
-        "2",
-    ]
-}
-
-issue_2313_5: {
-    options = {
-        pure_getters: "strict",
-        side_effects: true,
-    }
-    input: {
-        x().y++;
-        x().y;
-    }
-    expect: {
-        x().y++;
-        x().y;
-    }
-}
-
-issue_2313_6: {
-    options = {
-        pure_getters: true,
-        side_effects: true,
-    }
-    input: {
-        x().y++;
-        x().y;
-    }
-    expect: {
-        x().y++;
-        x();
-    }
-}

test/compress/return_undefined.js

@@ -1,124 +0,0 @@
-return_undefined: {
-    options = {
-        sequences     : false,
-        if_return     : true,
-        evaluate      : true,
-        dead_code     : true,
-        conditionals  : true,
-        comparisons   : true,
-        booleans      : true,
-        unused        : true,
-        side_effects  : true,
-        properties    : true,
-        drop_debugger : true,
-        loops         : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        keep_fnames   : false,
-        hoist_vars    : true,
-        join_vars     : true,
-        cascade       : true,
-        negate_iife   : true
-    };
-    input: {
-        function f0() {
-        }
-        function f1() {
-            return undefined;
-        }
-        function f2() {
-            return void 0;
-        }
-        function f3() {
-            return void 123;
-        }
-        function f4() {
-            return;
-        }
-        function f5(a, b) {
-            console.log(a, b);
-            baz(a);
-            return;
-        }
-        function f6(a, b) {
-            console.log(a, b);
-            if (a) {
-                foo(b);
-                baz(a);
-                return a + b;
-            }
-            return undefined;
-        }
-        function f7(a, b) {
-            console.log(a, b);
-            if (a) {
-                foo(b);
-                baz(a);
-                return void 0;
-            }
-            return a + b;
-        }
-        function f8(a, b) {
-            foo(a);
-            bar(b);
-            return void 0;
-        }
-        function f9(a, b) {
-            foo(a);
-            bar(b);
-            return undefined;
-        }
-        function f10() {
-            return false;
-        }
-        function f11() {
-            return null;
-        }
-        function f12() {
-            return 0;
-        }
-    }
-    expect: {
-        function f0() {}
-        function f1() {}
-        function f2() {}
-        function f3() {}
-        function f4() {}
-        function f5(a, b) {
-            console.log(a, b);
-            baz(a);
-        }
-        function f6(a, b) {
-            console.log(a, b);
-            if (a) {
-                foo(b);
-                baz(a);
-                return a + b;
-            }
-        }
-        function f7(a, b) {
-            console.log(a, b);
-            if (!a)
-                return a + b;
-            foo(b);
-            baz(a);
-        }
-        function f8(a, b) {
-            foo(a);
-            bar(b);
-        }
-        function f9(a, b) {
-            foo(a);
-            bar(b);
-        }
-        function f10() {
-            return !1;
-        }
-        function f11() {
-            return null;
-        }
-        function f12() {
-            return 0;
-        }
-    }
-}

test/compress/sandbox.js

@@ -1,14 +0,0 @@
-console_log: {
-    input: {
-        console.log("%% %s");
-        console.log("%% %s", "%s");
-    }
-    expect: {
-        console.log("%% %s");
-        console.log("%% %s", "%s");
-    }
-    expect_stdout: [
-        "%% %s",
-        "% %s",
-    ]
-}

test/compress/screw-ie8.js

@@ -1,393 +0,0 @@
-do_screw: {
-    options = {
-        ie8: false,
-    }
-    beautify = {
-        ie8: false,
-        ascii_only: true,
-    }
-    input: {
-        f("\v");
-    }
-    expect_exact: 'f("\\v");'
-}
-
-dont_screw: {
-    options = {
-        ie8: true,
-    }
-    beautify = {
-        ie8: true,
-        ascii_only: true,
-    }
-    input: {
-        f("\v");
-    }
-    expect_exact: 'f("\\x0B");'
-}
-
-do_screw_constants: {
-    options = {
-        ie8: false,
-    }
-    input: {
-        f(undefined, Infinity);
-    }
-    expect_exact: "f(void 0,1/0);"
-}
-
-dont_screw_constants: {
-    options = {
-        ie8: true,
-    }
-    input: {
-        f(undefined, Infinity);
-    }
-    expect_exact: "f(undefined,Infinity);"
-}
-
-do_screw_try_catch: {
-    options = {
-        ie8: false,
-    }
-    mangle = {
-        ie8: false,
-    }
-    beautify = {
-        ie8: false,
-    }
-    input: {
-        good = function(e){
-            return function(error){
-                try{
-                    e()
-                } catch(e) {
-                    error(e)
-                }
-            }
-        };
-    }
-    expect: {
-        good = function(n){
-            return function(t){
-                try{
-                    n()
-                } catch(n) {
-                    t(n)
-                }
-            }
-        };
-    }
-}
-
-dont_screw_try_catch: {
-    options = {
-        ie8: true,
-    }
-    mangle = {
-        ie8: true,
-    }
-    beautify = {
-        ie8: true,
-    }
-    input: {
-        bad = function(e){
-            return function(error){
-                try{
-                    e()
-                } catch(e) {
-                    error(e)
-                }
-            }
-        };
-    }
-    expect: {
-        bad = function(n){
-            return function(t){
-                try{
-                    n()
-                } catch(n) {
-                    t(n)
-                }
-            }
-        };
-    }
-}
-
-do_screw_try_catch_undefined: {
-    options = {
-        ie8: false,
-    }
-    mangle = {
-        ie8: false,
-    }
-    beautify = {
-        ie8: false,
-    }
-    input: {
-        function a(b){
-            try {
-                throw 'Stuff';
-            } catch (undefined) {
-                console.log('caught: ' + undefined);
-            }
-            console.log('undefined is ' + undefined);
-            return b === undefined;
-        };
-    }
-    expect: {
-        function a(o){
-            try{
-                throw "Stuff"
-            } catch (o) {
-                console.log("caught: "+o)
-            }
-            console.log("undefined is " + void 0);
-            return void 0===o
-        }
-    }
-    expect_stdout: true
-}
-
-dont_screw_try_catch_undefined: {
-    options = {
-        ie8: true,
-    }
-    mangle = {
-        ie8: true,
-    }
-    beautify = {
-        ie8: true,
-    }
-    input: {
-        function a(b){
-            try {
-                throw 'Stuff';
-            } catch (undefined) {
-                console.log('caught: ' + undefined);
-            }
-            console.log('undefined is ' + undefined);
-            return b === undefined;
-        };
-    }
-    expect: {
-        function a(n){
-            try{
-                throw "Stuff"
-            } catch (undefined) {
-                console.log("caught: " + undefined)
-            }
-            console.log("undefined is " + undefined);
-            return n === undefined
-        }
-    }
-    expect_stdout: true
-}
-
-reduce_vars: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        ie8: true,
-        unused: true,
-    }
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        function f() {
-            var a;
-            try {
-                x();
-            } catch (a) {
-                y();
-            }
-            alert(a);
-        }
-    }
-    expect: {
-        function f() {
-            var t;
-            try {
-                x();
-            } catch (t) {
-                y();
-            }
-            alert(t);
-        }
-    }
-}
-
-issue_1586_1: {
-    options = {
-        ie8: true,
-    }
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        function f() {
-            try {
-                x();
-            } catch (err) {
-                console.log(err.message);
-            }
-        }
-    }
-    expect_exact: "function f(){try{x()}catch(c){console.log(c.message)}}"
-}
-
-issue_1586_2: {
-    options = {
-        ie8: false,
-    }
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        function f() {
-            try {
-                x();
-            } catch (err) {
-                console.log(err.message);
-            }
-        }
-    }
-    expect_exact: "function f(){try{x()}catch(c){console.log(c.message)}}"
-}
-
-issue_2120_1: {
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        "aaaaaaaa";
-        var a = 1, b = "FAIL";
-        try {
-            throw 1;
-        } catch (c) {
-            try {
-                throw 0;
-            } catch (a) {
-                if (c) b = "PASS";
-            }
-        }
-        console.log(b);
-    }
-    expect: {
-        "aaaaaaaa";
-        var a = 1, b = "FAIL";
-        try {
-            throw 1;
-        } catch (t) {
-            try {
-                throw 0;
-            } catch (a) {
-                if (t) b = "PASS";
-            }
-        }
-        console.log(b);
-    }
-    expect_stdout: "PASS"
-}
-
-issue_2120_2: {
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        "aaaaaaaa";
-        var a = 1, b = "FAIL";
-        try {
-            throw 1;
-        } catch (c) {
-            try {
-                throw 0;
-            } catch (a) {
-                if (c) b = "PASS";
-            }
-        }
-        console.log(b);
-    }
-    expect: {
-        "aaaaaaaa";
-        var a = 1, b = "FAIL";
-        try {
-            throw 1;
-        } catch (c) {
-            try {
-                throw 0;
-            } catch (a) {
-                if (c) b = "PASS";
-            }
-        }
-        console.log(b);
-    }
-    expect_stdout: "PASS"
-}
-
-issue_2254_1: {
-    mangle = {
-        ie8: false,
-    }
-    input: {
-        "eeeeee";
-        try {
-            console.log(f("PASS"));
-        } catch (e) {}
-        function f(s) {
-            try {
-                throw "FAIL";
-            } catch (e) {
-                return s;
-            }
-        }
-    }
-    expect: {
-        "eeeeee";
-        try {
-            console.log(f("PASS"));
-        } catch (e) {}
-        function f(e) {
-            try {
-                throw "FAIL";
-            } catch (t) {
-                return e;
-            }
-        }
-    }
-    expect_stdout: "PASS"
-}
-
-issue_2254_2: {
-    mangle = {
-        ie8: true,
-    }
-    input: {
-        "eeeeee";
-        try {
-            console.log(f("PASS"));
-        } catch (e) {}
-        function f(s) {
-            try {
-                throw "FAIL";
-            } catch (e) {
-                return s;
-            }
-        }
-    }
-    expect: {
-        "eeeeee";
-        try {
-            console.log(f("PASS"));
-        } catch (e) {}
-        function f(t) {
-            try {
-                throw "FAIL";
-            } catch (e) {
-                return t;
-            }
-        }
-    }
-    expect_stdout: "PASS"
-}

test/compress/sequences.js

@@ -86,7 +86,6 @@ make_sequences_4: {
         switch (x = 5, y) {}
         with (x = 5, obj);
     }
-    expect_stdout: true
 }
 
 lift_sequences_1: {
@@ -104,18 +103,15 @@ lift_sequences_1: {
 lift_sequences_2: {
     options = { sequences: true, evaluate: true };
     input: {
-        var foo = 1, bar;
+        var foo, bar;
         foo.x = (foo = {}, 10);
         bar = (bar = {}, 10);
-        console.log(foo, bar);
     }
     expect: {
-        var foo = 1, bar;
+        var foo, bar;
         foo.x = (foo = {}, 10),
-        bar = {}, bar = 10,
-        console.log(foo, bar);
+        bar = {}, bar = 10;
     }
-    expect_stdout: true
 }
 
 lift_sequences_3: {
@@ -142,23 +138,6 @@ lift_sequences_4: {
     }
 }
 
-lift_sequences_5: {
-    options = {
-        sequences: true,
-    }
-    input: {
-        var a = 2, b;
-        a *= (b, a = 4, 3);
-        console.log(a);
-    }
-    expect: {
-        var a = 2, b;
-        b, a *= (a = 4, 3),
-        console.log(a);
-    }
-    expect_stdout: "6"
-}
-
 for_sequences: {
     options = { sequences: true };
     input: {
@@ -176,11 +155,6 @@ for_sequences: {
         // 4
         x = (foo in bar);
         for (y = 5; false;);
-        // 5
-        x = function() {
-            foo in bar;
-        };
-        for (y = 5; false;);
     }
     expect: {
         // 1
@@ -193,590 +167,5 @@ for_sequences: {
         // 4
         x = (foo in bar);
         for (y = 5; false;);
-        // 5
-        for (x = function() {
-            foo in bar;
-        }, y = 5; false;);
     }
 }
-
-limit_1: {
-    options = {
-        sequences: 3,
-    };
-    input: {
-        a;
-        b;
-        c;
-        d;
-        e;
-        f;
-        g;
-        h;
-        i;
-        j;
-        k;
-    }
-    expect: {
-        a, b, c;
-        d, e, f;
-        g, h, i;
-        j, k;
-    }
-}
-
-limit_2: {
-    options = {
-        sequences: 3,
-    };
-    input: {
-        a, b;
-        c, d;
-        e, f;
-        g, h;
-        i, j;
-        k;
-    }
-    expect: {
-        a, b, c, d;
-        e, f, g, h;
-        i, j, k;
-    }
-}
-
-negate_iife_for: {
-    options = {
-        sequences: true,
-        negate_iife: true,
-    };
-    input: {
-        (function() {})();
-        for (i = 0; i < 5; i++) console.log(i);
-
-        (function() {})();
-        for (; i < 5; i++) console.log(i);
-    }
-    expect: {
-        for (!function() {}(), i = 0; i < 5; i++) console.log(i);
-        for (function() {}(); i < 5; i++) console.log(i);
-    }
-    expect_stdout: true
-}
-
-iife: {
-    options = {
-        sequences: true,
-    };
-    input: {
-        x = 42;
-        (function a() {})();
-        !function b() {}();
-        ~function c() {}();
-        +function d() {}();
-        -function e() {}();
-        void function f() {}();
-        typeof function g() {}();
-    }
-    expect: {
-        x = 42, function a() {}(), function b() {}(), function c() {}(),
-        function d() {}(), function e() {}(), function f() {}(), function g() {}();
-    }
-}
-
-unsafe_undefined: {
-    options = {
-        conditionals: true,
-        if_return: true,
-        sequences: true,
-        side_effects: true,
-        unsafe: true,
-    }
-    input: {
-        function f(undefined) {
-            if (a)
-                return b;
-            if (c)
-                return d;
-        }
-        function g(undefined) {
-            if (a)
-                return b;
-            if (c)
-                return d;
-            e();
-        }
-    }
-    expect: {
-        function f(undefined) {
-            return a ? b : c ? d : undefined;
-        }
-        function g(undefined) {
-            return a ? b : c ? d : void e();
-        }
-    }
-}
-
-issue_1685: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        function f() {
-            var a = (a--, delete a && --b);
-        }
-        f();
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        function f() {
-            var a = (a--, delete a && --b);
-        }
-        f();
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-func_def_1: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {
-            return f = 0, !!f;
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            return !!(f = 0);
-        }
-        console.log(f());
-    }
-    expect_stdout: "false"
-}
-
-func_def_2: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(function f() {
-            return f = 0, !!f;
-        }());
-    }
-    expect: {
-        console.log(function f() {
-            return f = 0, !!f;
-        }());
-    }
-    expect_stdout: "true"
-}
-
-func_def_3: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {
-            function g() {}
-            return g = 0, !!g;
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            function g() {}
-            return !!(g = 0);
-        }
-        console.log(f());
-    }
-    expect_stdout: "false"
-}
-
-func_def_4: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {
-            function g() {
-                return g = 0, !!g;
-            }
-            return g();
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            function g() {
-                return !!(g = 0);
-            }
-            return g();
-        }
-        console.log(f());
-    }
-    expect_stdout: "false"
-}
-
-func_def_5: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {
-            return function g(){
-                return g = 0, !!g;
-            }();
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            return function g(){
-                return g = 0, !!g;
-            }();
-        }
-        console.log(f());
-    }
-    expect_stdout: "true"
-}
-
-issue_1758: {
-    options = {
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(function(c) {
-            var undefined = 42;
-            return function() {
-                c--;
-                c--, c.toString();
-                return;
-            }();
-        }());
-    }
-    expect: {
-        console.log(function(c) {
-            var undefined = 42;
-            return function() {
-                return c--, c--, void c.toString();
-            }();
-        }());
-    }
-    expect_stdout: "undefined"
-}
-
-delete_seq_1: {
-    options = {
-        booleans: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(delete (1, undefined));
-        console.log(delete (1, void 0));
-        console.log(delete (1, Infinity));
-        console.log(delete (1, 1 / 0));
-        console.log(delete (1, NaN));
-        console.log(delete (1, 0 / 0));
-    }
-    expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-    }
-    expect_stdout: true
-}
-
-delete_seq_2: {
-    options = {
-        booleans: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(delete (1, 2, undefined));
-        console.log(delete (1, 2, void 0));
-        console.log(delete (1, 2, Infinity));
-        console.log(delete (1, 2, 1 / 0));
-        console.log(delete (1, 2, NaN));
-        console.log(delete (1, 2, 0 / 0));
-    }
-    expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-    }
-    expect_stdout: true
-}
-
-delete_seq_3: {
-    options = {
-        booleans: true,
-        keep_infinity: true,
-        side_effects: true,
-    }
-    input: {
-        console.log(delete (1, 2, undefined));
-        console.log(delete (1, 2, void 0));
-        console.log(delete (1, 2, Infinity));
-        console.log(delete (1, 2, 1 / 0));
-        console.log(delete (1, 2, NaN));
-        console.log(delete (1, 2, 0 / 0));
-    }
-    expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-    }
-    expect_stdout: true
-}
-
-delete_seq_4: {
-    options = {
-        booleans: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {}
-        console.log(delete (f(), undefined));
-        console.log(delete (f(), void 0));
-        console.log(delete (f(), Infinity));
-        console.log(delete (f(), 1 / 0));
-        console.log(delete (f(), NaN));
-        console.log(delete (f(), 0 / 0));
-    }
-    expect: {
-        function f() {}
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0));
-    }
-    expect_stdout: true
-}
-
-delete_seq_5: {
-    options = {
-        booleans: true,
-        keep_infinity: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {}
-        console.log(delete (f(), undefined));
-        console.log(delete (f(), void 0));
-        console.log(delete (f(), Infinity));
-        console.log(delete (f(), 1 / 0));
-        console.log(delete (f(), NaN));
-        console.log(delete (f(), 0 / 0));
-    }
-    expect: {
-        function f() {}
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0)),
-        console.log((f(), !0));
-    }
-    expect_stdout: true
-}
-
-delete_seq_6: {
-    options = {
-        booleans: true,
-        side_effects: true,
-    }
-    input: {
-        var a;
-        console.log(delete (1, a));
-    }
-    expect: {
-        var a;
-        console.log(!0);
-    }
-    expect_stdout: true
-}
-
-side_effects: {
-    options = {
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        0, a(), 1, b(), 2, c(), 3;
-    }
-    expect: {
-        a(), b(), c();
-    }
-}
-
-side_effects_cascade_1: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            a -= 42;
-            if (a < 0) a = 0;
-            b.a = a;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            (a -= 42) < 0 && (a = 0), b.a = a;
-        }
-    }
-}
-
-side_effects_cascade_2: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            b = a,
-            !a + (b += a) || (b += a),
-            b = a,
-            b;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            b = a,
-            !a + (b += a) || (b += a),
-            b = a;
-        }
-    }
-}
-
-side_effects_cascade_3: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            "foo" ^ (b += a),
-            b ? false : (b = a) ? -1 : (b -= a) - (b ^= a),
-            a-- || !a,
-            a;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            !(b += a) && ((b = a) || (b -= a, b ^= a)),
-            --a;
-        }
-    }
-}
-
-issue_27: {
-    options = {
-        cascade: true,
-        passes: 2,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        (function(jQuery) {
-            var $;
-            $ = jQuery;
-            $("body").addClass("foo");
-        })(jQuery);
-    }
-    expect: {
-        (function(jQuery) {
-            jQuery("body").addClass("foo");
-        })(jQuery);
-    }
-}
-
-issue_2062: {
-    options = {
-        booleans: true,
-        cascade: true,
-        conditionals: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 1;
-        if ([ a || a++ + a--, a++ + a--, a && a.var ]);
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        a || (a++, a--), a++, --a && a.var;
-        console.log(a);
-    }
-    expect_stdout: "1"
-}
-
-issue_2313: {
-    options = {
-        cascade: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        var a = 0, b = 0;
-        var foo = {
-            get c() {
-                a++;
-                return 42;
-            },
-            set c(c) {
-                b++;
-            },
-            d: function() {
-                this.c++;
-                if (this.c) console.log(a, b);
-            }
-        }
-        foo.d();
-    }
-    expect: {
-        var a = 0, b = 0;
-        var foo = {
-            get c() {
-                return a++, 42;
-            },
-            set c(c) {
-                b++;
-            },
-            d: function() {
-                if (this.c++, this.c) console.log(a, b);
-            }
-        }
-        foo.d();
-    }
-    expect_stdout: "2 1"
-}

test/compress/string-literal.js

@@ -1,19 +0,0 @@
-octal_escape_sequence: {
-    input: {
-        var boundaries = "\0\7\00\07\70\77\000\077\300\377";
-        var border_check = "\400\700\0000\3000";
-    }
-    expect: {
-        var boundaries = "\x00\x07\x00\x07\x38\x3f\x00\x3f\xc0\xff";
-        var border_check = "\x20\x30\x38\x30\x00\x30\xc0\x30";
-    }
-}
-
-issue_1929: {
-    input: {
-        function f(s) {
-            return s.split(/[\\/]/);
-        }
-    }
-    expect_exact: "function f(s){return s.split(/[\\\\/]/)}"
-}

test/compress/switch.js

@@ -1,10 +1,5 @@
 constant_switch_1: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         switch (1+1) {
           case 1: foo(); break;
@@ -18,12 +13,7 @@ constant_switch_1: {
 }
 
 constant_switch_2: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         switch (1) {
           case 1: foo();
@@ -38,12 +28,7 @@ constant_switch_2: {
 }
 
 constant_switch_3: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         switch (10) {
           case 1: foo();
@@ -59,12 +44,7 @@ constant_switch_3: {
 }
 
 constant_switch_4: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         switch (2) {
           case 1:
@@ -85,12 +65,7 @@ constant_switch_4: {
 }
 
 constant_switch_5: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         switch (1) {
           case 1:
@@ -119,12 +94,7 @@ constant_switch_5: {
 }
 
 constant_switch_6: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         OUT: {
             foo();
@@ -153,12 +123,7 @@ constant_switch_6: {
 }
 
 constant_switch_7: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         OUT: {
             foo();
@@ -196,12 +161,7 @@ constant_switch_7: {
 }
 
 constant_switch_8: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         OUT: switch (1) {
           case 1:
@@ -225,12 +185,7 @@ constant_switch_8: {
 }
 
 constant_switch_9: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
+    options = { dead_code: true, evaluate: true };
     input: {
         OUT: switch (1) {
           case 1:
@@ -255,10 +210,7 @@ constant_switch_9: {
 }
 
 drop_default_1: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
+    options = { dead_code: true };
     input: {
         switch (foo) {
           case 'bar': baz();
@@ -273,10 +225,7 @@ drop_default_1: {
 }
 
 drop_default_2: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
+    options = { dead_code: true };
     input: {
         switch (foo) {
           case 'bar': baz(); break;
@@ -292,10 +241,7 @@ drop_default_2: {
 }
 
 keep_default: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
+    options = { dead_code: true };
     input: {
         switch (foo) {
           case 'bar': baz();
@@ -312,507 +258,3 @@ keep_default: {
         }
     }
 }
-
-issue_1663: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        function f() {
-            switch (1) {
-              case 1:
-                b = a++;
-                return ++b;
-              default:
-                var b;
-            }
-        }
-        f();
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        function f() {
-            var b;
-            b = a++;
-            return ++b;
-        }
-        f();
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-drop_case: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (foo) {
-          case 'bar': baz(); break;
-          case 'moo':
-            break;
-        }
-    }
-    expect: {
-        switch (foo) {
-          case 'bar': baz();
-        }
-    }
-}
-
-keep_case: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (foo) {
-          case 'bar': baz(); break;
-          case moo:
-            break;
-        }
-    }
-    expect: {
-        switch (foo) {
-          case 'bar': baz(); break;
-          case moo:
-        }
-    }
-}
-
-issue_376: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        switches: true,
-    }
-    input: {
-        switch (true) {
-          case boolCondition:
-            console.log(1);
-            break;
-          case false:
-            console.log(2);
-            break;
-        }
-    }
-    expect: {
-        switch (true) {
-          case boolCondition:
-            console.log(1);
-        }
-    }
-}
-
-issue_441_1: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (foo) {
-          case bar:
-            qux();
-            break;
-          case baz:
-            qux();
-            break;
-          default:
-            qux();
-            break;
-        }
-    }
-    expect: {
-        switch (foo) {
-          case bar:
-          case baz:
-          default:
-            qux();
-        }
-    }
-}
-
-issue_441_2: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (foo) {
-          case bar:
-            // TODO: Fold into the case below
-            qux();
-            break;
-          case fall:
-          case baz:
-            qux();
-            break;
-          default:
-            qux();
-            break;
-        }
-    }
-    expect: {
-        switch (foo) {
-          case bar:
-            qux();
-            break;
-          case fall:
-          case baz:
-          default:
-            qux();
-        }
-    }
-}
-
-issue_1674: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        side_effects: true,
-        switches: true,
-    }
-    input: {
-        switch (0) {
-          default:
-            console.log("FAIL");
-            break;
-          case 0:
-            console.log("PASS");
-            break;
-        }
-    }
-    expect: {
-        console.log("PASS");
-    }
-    expect_stdout: "PASS"
-}
-
-issue_1679: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        switches: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        function f() {
-            switch (--b) {
-              default:
-              case !function x() {}:
-                break;
-              case b--:
-                switch (0) {
-                  default:
-                  case a--:
-                }
-                break;
-              case (a++):
-                break;
-            }
-        }
-        f();
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        function f() {
-            switch (--b) {
-              default:
-              case !function x() {}:
-                break;
-              case b--:
-                switch (0) {
-                  default:
-                  case a--:
-                }
-                break;
-              case (a++):
-            }
-        }
-        f();
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-issue_1680_1: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        switches: true,
-    }
-    input: {
-        function f(x) {
-            console.log(x);
-            return x + 1;
-        }
-        switch (2) {
-          case f(0):
-          case f(1):
-            f(2);
-          case 2:
-          case f(3):
-          case f(4):
-            f(5);
-        }
-    }
-    expect: {
-        function f(x) {
-            console.log(x);
-            return x + 1;
-        }
-        switch (2) {
-          case f(0):
-          case f(1):
-            f(2);
-          case 2:
-            f(5);
-        }
-    }
-    expect_stdout: [
-        "0",
-        "1",
-        "2",
-        "5",
-    ]
-}
-
-issue_1680_2: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        var a = 100, b = 10;
-        switch (b) {
-          case a--:
-            break;
-          case b:
-            var c;
-            break;
-          case a:
-            break;
-          case a--:
-            break;
-        }
-        console.log(a, b);
-    }
-    expect: {
-        var a = 100, b = 10;
-        switch (b) {
-          case a--:
-            break;
-          case b:
-            var c;
-            break;
-          case a:
-          case a--:
-        }
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-issue_1690_1: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (console.log("PASS")) {}
-    }
-    expect: {
-        console.log("PASS");
-    }
-    expect_stdout: "PASS"
-}
-
-issue_1690_2: {
-    options = {
-        dead_code: false,
-        switches: true,
-    }
-    input: {
-        switch (console.log("PASS")) {}
-    }
-    expect: {
-        switch (console.log("PASS")) {}
-    }
-    expect_stdout: "PASS"
-}
-
-if_switch_typeof: {
-    options = {
-        conditionals: true,
-        dead_code: true,
-        side_effects: true,
-        switches: true,
-    }
-    input: {
-        if (a) switch(typeof b) {}
-    }
-    expect: {
-        a;
-    }
-}
-
-issue_1698: {
-    options = {
-        side_effects: true,
-        switches: true,
-    }
-    input: {
-        var a = 1;
-        !function() {
-            switch (a++) {}
-        }();
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        !function() {
-            switch (a++) {}
-        }();
-        console.log(a);
-    }
-    expect_stdout: "2"
-}
-
-issue_1705_1: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        var a = 0;
-        switch (a) {
-          default:
-            console.log("FAIL");
-          case 0:
-            break;
-        }
-    }
-    expect: {
-        var a = 0;
-        switch (a) {
-          default:
-            console.log("FAIL");
-          case 0:
-        }
-    }
-    expect_stdout: true
-}
-
-issue_1705_2: {
-    options = {
-        dead_code: true,
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        switches: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var a = 0;
-        switch (a) {
-          default:
-            console.log("FAIL");
-          case 0:
-            break;
-        }
-    }
-    expect: {
-    }
-    expect_stdout: true
-}
-
-issue_1705_3: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        switch (a) {
-          case 0:
-            break;
-          default:
-            break;
-        }
-    }
-    expect: {
-        a;
-    }
-    expect_stdout: true
-}
-
-beautify: {
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        switch (a) {
-          case 0:
-          case 1:
-            break;
-          case 2:
-          default:
-        }
-        switch (b) {
-          case 3:
-            foo();
-            bar();
-          default:
-            break;
-        }
-    }
-    expect_exact: [
-        "switch (a) {",
-        "  case 0:",
-        "  case 1:",
-        "    break;",
-        "",
-        "  case 2:",
-        "  default:",
-        "}",
-        "",
-        "switch (b) {",
-        "  case 3:",
-        "    foo();",
-        "    bar();",
-        "",
-        "  default:",
-        "    break;",
-        "}",
-    ]
-}
-
-issue_1758: {
-    options = {
-        dead_code: true,
-        switches: true,
-    }
-    input: {
-        var a = 1, b = 2;
-        switch (a--) {
-          default:
-            b++;
-        }
-        console.log(a, b);
-    }
-    expect: {
-        var a = 1, b = 2;
-        a--;
-        b++;
-        console.log(a, b);
-    }
-    expect_stdout: "0 3"
-}

test/compress/transform.js

@@ -1,130 +0,0 @@
-booleans_evaluate: {
-    options = {
-        booleans: true,
-        evaluate: true,
-    }
-    input: {
-        console.log(typeof void 0 != "undefined");
-        console.log(1 == 1, 1 === 1)
-        console.log(1 != 1, 1 !== 1)
-    }
-    expect: {
-        console.log(!1);
-        console.log(!0, !0);
-        console.log(!1, !1);
-    }
-    expect_stdout: true
-}
-
-booleans_global_defs: {
-    options = {
-        booleans: true,
-        evaluate: true,
-        global_defs: {
-            A: true,
-        },
-    }
-    input: {
-        console.log(A == 1);
-    }
-    expect: {
-        console.log(!0);
-    }
-}
-
-condition_evaluate: {
-    options = {
-        booleans: true,
-        dead_code: false,
-        evaluate: true,
-        loops: false,
-    }
-    input: {
-        while (1 === 2);
-        for (; 1 == true;);
-        if (void 0 == null);
-    }
-    expect: {
-        while (!1);
-        for (; !0;);
-        if (!0);
-    }
-}
-
-if_else_empty: {
-    options = {
-        conditionals: true,
-    }
-    input: {
-        if ({} ? a : b); else {}
-    }
-    expect: {
-        !{} ? b : a;
-    }
-}
-
-label_if_break: {
-    options = {
-        conditionals: true,
-        dead_code: true,
-        evaluate: true,
-    }
-    input: {
-        L: if (true) {
-            a;
-            break L;
-        }
-    }
-    expect: {
-        a;
-    }
-}
-
-while_if_break: {
-    options = {
-        conditionals: true,
-        loops: true,
-        sequences: true,
-    }
-    input: {
-        while (a) {
-            if (b) if(c) d;
-            if (e) break;
-        }
-    }
-    expect: {
-        for(; a && (b && c && d, !e););
-    }
-}
-
-if_return: {
-    options = {
-        booleans: true,
-        conditionals: true,
-        if_return: true,
-        sequences: true,
-    }
-    input: {
-        function f(w, x, y, z) {
-            if (x) return;
-            if (w) {
-                if (y) return;
-            } else if (z) return;
-            if (x == y) return true;
-
-            if (x) w();
-            if (y) z();
-            return true;
-        }
-    }
-    expect: {
-        function f(w, x, y, z) {
-            if (!x) {
-                if (w) {
-                    if (y) return;
-                } else if (z) return;
-                return x == y || (x && w(), y && z(), !0);
-            }
-        }
-    }
-}

test/compress/typeof.js

@@ -23,40 +23,3 @@ typeof_evaluation: {
         h='undefined';
     }
 }
-
-typeof_in_boolean_context: {
-    options = {
-        booleans     : true,
-        evaluate     : true,
-        conditionals : true,
-        side_effects : true,
-    };
-    input: {
-        function f1(x) { return typeof x ? "yes" : "no"; }
-        function f2() { return typeof g()? "Yes" : "No"; }
-        typeof 0 ? foo() : bar();
-        !typeof console.log(1);
-        var a = !typeof console.log(2);
-        if (typeof (1 + foo()));
-    }
-    expect: {
-        function f1(x) { return "yes"; }
-        function f2() { return g(), "Yes"; }
-        foo();
-        console.log(1);
-        var a = !(console.log(2), !0);
-        foo();
-    }
-}
-
-issue_1668: {
-    options = {
-        booleans: true,
-    }
-    input: {
-        if (typeof bar);
-    }
-    expect: {
-        if (!0);
-    }
-}

test/compress/unicode.js

@@ -15,43 +15,3 @@ unicode_parse_variables: {
         var l০ = 3;
     }
 }
-
-issue_2242_1: {
-    beautify = {
-        ascii_only: false,
-    }
-    input: {
-        console.log("\ud83d", "\ude00", "\ud83d\ude00", "\ud83d@\ude00");
-    }
-    expect_exact: 'console.log("\\ud83d","\\ude00","\ud83d\ude00","\\ud83d@\\ude00");'
-}
-
-issue_2242_2: {
-    beautify = {
-        ascii_only: true,
-    }
-    input: {
-        console.log("\ud83d", "\ude00", "\ud83d\ude00", "\ud83d@\ude00");
-    }
-    expect_exact: 'console.log("\\ud83d","\\ude00","\\ud83d\\ude00","\\ud83d@\\ude00");'
-}
-
-issue_2242_3: {
-    options = {
-        evaluate: false,
-    }
-    input: {
-        console.log("\ud83d" + "\ude00", "\ud83d" + "@" + "\ude00");
-    }
-    expect_exact: 'console.log("\\ud83d"+"\\ude00","\\ud83d"+"@"+"\\ude00");'
-}
-
-issue_2242_4: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        console.log("\ud83d" + "\ude00", "\ud83d" + "@" + "\ude00");
-    }
-    expect_exact: 'console.log("\ud83d\ude00","\\ud83d@\\ude00");'
-}

test/compress/wrap_iife.js

@@ -1,48 +0,0 @@
-wrap_iife: {
-    options = {
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        (function() {
-            return function() {
-                console.log('test')
-            };
-        })()();
-    }
-    expect_exact: '(function(){return function(){console.log("test")}})()();'
-}
-
-wrap_iife_in_expression: {
-    options = {
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        foo = (function () {
-            return bar();
-        })();
-    }
-    expect_exact: 'foo=(function(){return bar()})();'
-}
-
-wrap_iife_in_return_call: {
-    options = {
-        negate_iife: false,
-    }
-    beautify = {
-        wrap_iife: true,
-    }
-    input: {
-        (function() {
-            return (function() {
-                console.log('test')
-            })();
-        })()();
-    }
-    expect_exact: '(function(){return(function(){console.log("test")})()})()();'
-}

test/exports.js

@@ -1,14 +0,0 @@
-exports["Compressor"] = Compressor;
-exports["JS_Parse_Error"] = JS_Parse_Error;
-exports["OutputStream"] = OutputStream;
-exports["SourceMap"] = SourceMap;
-exports["TreeWalker"] = TreeWalker;
-exports["base54"] = base54;
-exports["defaults"] = defaults;
-exports["mangle_properties"] = mangle_properties;
-exports["minify"] = minify;
-exports["parse"] = parse;
-exports["reserve_quoted_keys"] = reserve_quoted_keys;
-exports["string_template"] = string_template;
-exports["tokenizer"] = tokenizer;
-exports["is_identifier"] = is_identifier;