v2.8.24

fixes #1922

.github/ISSUE_TEMPLATE.md

@@ -1,20 +1,9 @@
-**Bug report or feature request?** 
+- Bug report or feature request? <!-- Note: sub-optimal but correct code is not a bug -->
-
+- `uglify-js` version (`uglifyjs -V`)
-<!-- Note: sub-optimal but correct code is not a bug -->
+- JavaScript input - ideally as small as possible.
-
+- The `uglifyjs` CLI command executed or `minify()` options used.
-**ES5 or ES6+ input?** 
+- An example of JavaScript output produced and/or the error or warning.
-
-<!-- Note: for ES6 see: https://github.com/mishoo/UglifyJS2/tree/harmony#harmony -->
-
-**Uglify version (`uglifyjs -V`)**
-
-**JavaScript input**  <!-- ideally as small as possible -->
-
-**The `uglifyjs` CLI command executed or `minify()` options used.**
-
-**JavaScript output or error produced.**
-
 <!--
-    Note: `uglify-js` only supports ES5. 
+    Note: the release version of uglify-js only supports ES5. Those wishing
-    Those wishing to minify ES6 should use `uglify-es`.
+    to minify ES6 should use the experimental harmony branch.
 -->

.travis.yml

@@ -1,14 +1,12 @@
 language: node_js
+before_install: "npm install -g npm"
 node_js:
     - "0.10"
     - "0.12"
     - "4"
     - "6"
-    - "8"
 env:
     - UGLIFYJS_TEST_ALL=1
 matrix:
   fast_finish: true
 sudo: false
-cache:
-  directories: tmp

bin/extract-props.js

@@ -0,0 +1,77 @@
+#! /usr/bin/env node
+
+"use strict";
+
+var U2 = require("../tools/node");
+var fs = require("fs");
+var yargs = require("yargs");
+var ARGS = yargs
+    .describe("o", "Output file")
+    .argv;
+var files = ARGS._.slice();
+var output = {
+    vars: {},
+    props: {}
+};
+
+if (ARGS.o) try {
+    output = JSON.parse(fs.readFileSync(ARGS.o, "utf8"));
+} catch(ex) {}
+
+files.forEach(getProps);
+
+if (ARGS.o) {
+    fs.writeFileSync(ARGS.o, JSON.stringify(output, null, 2), "utf8");
+} else {
+    console.log("%s", JSON.stringify(output, null, 2));
+}
+
+function getProps(filename) {
+    var code = fs.readFileSync(filename, "utf8");
+    var ast = U2.parse(code);
+
+    ast.walk(new U2.TreeWalker(function(node){
+        if (node instanceof U2.AST_ObjectKeyVal) {
+            add(node.key);
+        }
+        else if (node instanceof U2.AST_ObjectProperty) {
+            add(node.key.name);
+        }
+        else if (node instanceof U2.AST_Dot) {
+            add(node.property);
+        }
+        else if (node instanceof U2.AST_Sub) {
+            addStrings(node.property);
+        }
+    }));
+
+    function addStrings(node) {
+        var out = {};
+        try {
+            (function walk(node){
+                node.walk(new U2.TreeWalker(function(node){
+                    if (node instanceof U2.AST_Seq) {
+                        walk(node.cdr);
+                        return true;
+                    }
+                    if (node instanceof U2.AST_String) {
+                        add(node.value);
+                        return true;
+                    }
+                    if (node instanceof U2.AST_Conditional) {
+                        walk(node.consequent);
+                        walk(node.alternative);
+                        return true;
+                    }
+                    throw out;
+                }));
+            })(node);
+        } catch(ex) {
+            if (ex !== out) throw ex;
+        }
+    }
+
+    function add(name) {
+        output.props[name] = true;
+    }
+}

lib/ast.js

@@ -182,13 +182,21 @@ 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);
 
@@ -318,14 +326,63 @@ var AST_Toplevel = DEFNODE("Toplevel", "globals", {
     $propdoc: {
         globals: "[Object/S] a map of name -> SymbolDef for all undeclared names",
     },
-    wrap_commonjs: function(name) {
+    wrap_enclose: function(arg_parameter_pairs) {
-        var body = this.body;
+        var self = this;
-        var wrapped_tl = "(function(exports){'$ORIG';})(typeof " + name + "=='undefined'?(" + name + "={}):" + name + ");";
+        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(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){ '$ORIG'; '$EXPORTS'; global['" + name + "'] = exports; }({}, (function(){return this}())))";
+        wrapped_tl = parse(wrapped_tl);
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
+            if (node instanceof AST_Directive) {
+                switch (node.value) {
+                  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;
     }
@@ -495,10 +552,10 @@ 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"
     },
@@ -516,10 +573,14 @@ 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 +601,11 @@ var AST_Call = DEFNODE("Call", "expression args", {
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
+            this.expression._walk(visitor);
             var args = this.args;
             for (var i = 0, len = args.length; i < len; i++) {
                 args[i]._walk(visitor);
             }
-            this.expression._walk(visitor);
         });
     }
 });
@@ -553,16 +614,68 @@ 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", {
+var AST_Seq = DEFNODE("Seq", "car cdr", {
-    $documentation: "A sequence expression (comma-separated expressions)",
+    $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;
+        }
+    },
+    len: function() {
+        if (this.cdr instanceof AST_Seq) {
+            return this.cdr.len() + 1;
+        } else {
+            return 2;
+        }
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            this.expressions.forEach(function(node) {
+            this.car._walk(visitor);
-                node._walk(visitor);
+            if (this.cdr) this.cdr._walk(visitor);
-            });
         });
     }
 });
@@ -615,7 +728,7 @@ 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",
@@ -685,8 +798,8 @@ 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.",
+        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_Accessor."
+        value: "[AST_Node] property value.  For setters and getters this is an AST_Function."
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
@@ -724,13 +837,17 @@ 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)",
 }, 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);

lib/minify.js

@@ -1,177 +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 minify(files, options) {
-    var warn_function = AST_Node.warn_function;
-    try {
-        options = defaults(options, {
-            compress: {},
-            ie8: false,
-            keep_fnames: false,
-            mangle: {},
-            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" ]);
-        if (options.mangle) {
-            options.mangle = defaults(options.mangle, {
-                cache: null,
-                eval: false,
-                ie8: false,
-                keep_fnames: false,
-                properties: false,
-                reserved: [],
-                toplevel: false,
-            }, true);
-        }
-        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 (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 (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

@@ -111,19 +111,23 @@
         },
         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);
+            switch (M.kind) {
-            args.key = new AST_SymbolAccessor({
+              case "init":
-                name: args.key
+                return new AST_ObjectKeyVal(args);
-            });
+              case "set":
-            args.value = new AST_Accessor(args.value);
+                args.value.name = from_moz(key);
-            if (M.kind == "get") return new AST_ObjectGetter(args);
+                return new AST_ObjectSetter(args);
-            if (M.kind == "set") return new AST_ObjectSetter(args);
+              case "get":
+                args.value.name = from_moz(key);
+                return new AST_ObjectGetter(args);
+            }
         },
         ArrayExpression: function(M) {
             return new AST_Array({
@@ -145,11 +149,7 @@
             });
         },
         SequenceExpression: function(M) {
-            return new AST_Sequence({
+            return AST_Seq.from_array(M.expressions.map(from_moz));
-                start      : my_start_token(M),
-                end        : my_end_token(M),
-                expressions: M.expressions.map(from_moz)
-            });
         },
         MemberExpression: function(M) {
             return new (M.computed ? AST_Sub : AST_Dot)({
@@ -168,7 +168,7 @@
             });
         },
         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)
@@ -204,7 +204,7 @@
         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
@@ -256,7 +256,10 @@
     map("CallExpression", AST_Call, "callee>expression, arguments@args");
 
     def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
-        return to_moz_scope("Program", M);
+        return {
+            type: "Program",
+            body: M.body.map(to_moz)
+        };
     });
 
     def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) {
@@ -264,7 +267,7 @@
             type: "FunctionDeclaration",
             id: to_moz(M.name),
             params: M.argnames.map(to_moz),
-            body: to_moz_scope("BlockStatement", M)
+            body: to_moz_block(M)
         }
     });
 
@@ -273,7 +276,7 @@
             type: "FunctionExpression",
             id: to_moz(M.name),
             params: M.argnames.map(to_moz),
-            body: to_moz_scope("BlockStatement", M)
+            body: to_moz_block(M)
         }
     });
 
@@ -324,15 +327,15 @@
     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)
         };
     });
 
@@ -379,10 +382,11 @@
     });
 
     def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
-        var key = {
+        var key = (
-            type: "Literal",
+            is_identifier(M.key)
-            value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key
+            ? {type: "Identifier", name: M.key}
-        };
+            : {type: "Literal", value: M.key}
+        );
         var kind;
         if (M instanceof AST_ObjectKeyVal) {
             kind = "init";
@@ -543,8 +547,8 @@
         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
         );
-        me_to_moz = new Function("to_moz", "to_moz_block", "to_moz_scope", "return(" + me_to_moz + ")")(
+        me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")(
-            to_moz, to_moz_block, to_moz_scope
+            to_moz, to_moz_block
         );
         MOZ_TO_ME[moztype] = moz_to_me;
         def_to_moz(mytype, me_to_moz);
@@ -602,14 +606,4 @@
         };
     };
 
-    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/output.js

@@ -57,7 +57,6 @@ function OutputStream(options) {
         beautify         : false,
         bracketize       : false,
         comments         : false,
-        ie8              : false,
         indent_level     : 4,
         indent_start     : 0,
         inline_script    : true,
@@ -67,10 +66,12 @@ function OutputStream(options) {
         preserve_line    : false,
         quote_keys       : false,
         quote_style      : 0,
+        screw_ie8        : true,
         semicolons       : true,
         shebang          : true,
         source_map       : null,
-        webkit           : false,
+        space_colon      : true,
+        unescape_regexps : false,
         width            : 80,
         wrap_iife        : false,
     }, true);
@@ -135,7 +136,7 @@ function OutputStream(options) {
               case "\t": return "\\t";
               case "\b": return "\\b";
               case "\f": return "\\f";
-              case "\x0B": return options.ie8 ? "\\x0B" : "\\v";
+              case "\x0B": return options.screw_ie8 ? "\\v" : "\\x0B";
               case "\u2028": return "\\u2028";
               case "\u2029": return "\\u2029";
               case "\ufeff": return "\\ufeff";
@@ -190,43 +191,12 @@ function OutputStream(options) {
     var might_need_semicolon = false;
     var might_add_newline = 0;
     var last = "";
-    var mapping_token, mapping_name, mappings = options.source_map && [];
-
-    var do_add_mapping = mappings ? function() {
-        mappings.forEach(function(mapping) {
-            try {
-                options.source_map.add(
-                    mapping.token.file,
-                    mapping.line, mapping.col,
-                    mapping.token.line, mapping.token.col,
-                    !mapping.name && mapping.token.type == "name" ? mapping.token.value : mapping.name
-                );
-            } catch(ex) {
-                AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]", {
-                    file: mapping.token.file,
-                    line: mapping.token.line,
-                    col: mapping.token.col,
-                    cline: mapping.line,
-                    ccol: mapping.col,
-                    name: mapping.name || ""
-                })
-            }
-        });
-        mappings = [];
-    } : noop;
 
     var ensure_line_len = options.max_line_len ? function() {
         if (current_col > options.max_line_len) {
             if (might_add_newline) {
                 var left = OUTPUT.slice(0, might_add_newline);
                 var right = OUTPUT.slice(might_add_newline);
-                if (mappings) {
-                    var delta = right.length - current_col;
-                    mappings.forEach(function(mapping) {
-                        mapping.line++;
-                        mapping.col += delta;
-                    });
-                }
                 OUTPUT = left + "\n" + right;
                 current_line++;
                 current_pos++;
@@ -236,10 +206,7 @@ function OutputStream(options) {
                 AST_Node.warn("Output exceeds {max_line_len} characters", options);
             }
         }
-        if (might_add_newline) {
         might_add_newline = 0;
-            do_add_mapping();
-        }
     } : noop;
 
     var requireSemicolonChars = makePredicate("( [ + * / - , .");
@@ -299,18 +266,6 @@ function OutputStream(options) {
             }
             might_need_space = false;
         }
-
-        if (mapping_token) {
-            mappings.push({
-                token: mapping_token,
-                name: mapping_name,
-                line: current_line,
-                col: current_col
-            });
-            mapping_token = false;
-            if (!might_add_newline) do_add_mapping();
-        }
-
         OUTPUT += str;
         current_pos += str.length;
         var a = str.split(/\r?\n/), n = a.length - 1;
@@ -402,12 +357,27 @@ function OutputStream(options) {
 
     function colon() {
         print(":");
-        space();
+        if (options.space_colon) space();
     };
 
-    var add_mapping = mappings ? function(token, name) {
+    var add_mapping = options.source_map ? function(token, name) {
-        mapping_token = token;
+        try {
-        mapping_name = name;
+            if (token) options.source_map.add(
+                token.file || "?",
+                current_line, current_col,
+                token.line, token.col,
+                (!name && token.type == "name") ? token.value : name
+            );
+        } catch(ex) {
+            AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]", {
+                file: token.file,
+                line: token.line,
+                col: token.col,
+                cline: current_line,
+                ccol: current_col,
+                name: name || ""
+            })
+        }
     } : noop;
 
     function get() {
@@ -598,13 +568,6 @@ function OutputStream(options) {
             return true;
         }
 
-        if (output.option('webkit')) {
-            var p = output.parent();
-            if (p instanceof AST_PropAccess && p.expression === this) {
-                return true;
-            }
-        }
-
         if (output.option('wrap_iife')) {
             var p = output.parent();
             return p instanceof AST_Call && p.expression === this;
@@ -625,7 +588,7 @@ function OutputStream(options) {
             || p instanceof AST_Call && p.expression === this;
     });
 
-    PARENS(AST_Sequence, function(output){
+    PARENS(AST_Seq, function(output){
         var p = output.parent();
         return p instanceof AST_Call             // (foo, bar)() or foo(1, (2, 3), 4)
             || p instanceof AST_Unary            // !(foo, bar, baz)
@@ -939,7 +902,7 @@ function OutputStream(options) {
     function make_then(self, output) {
         var b = self.body;
         if (output.option("bracketize")
-            || output.option("ie8") && b instanceof AST_Do)
+            || !output.option("screw_ie8") && b instanceof AST_Do)
             return make_block(b, output);
         // The squeezer replaces "block"-s that contain only a single
         // statement with the statement itself; technically, the AST
@@ -1070,6 +1033,9 @@ function OutputStream(options) {
     DEFPRINT(AST_Var, function(self, output){
         self._do_print(output, "var");
     });
+    DEFPRINT(AST_Const, function(self, output){
+        self._do_print(output, "const");
+    });
 
     function parenthesize_for_noin(node, output, noin) {
         if (!noin) node.print(output);
@@ -1117,19 +1083,18 @@ function OutputStream(options) {
         AST_Call.prototype._codegen(self, output);
     });
 
-    AST_Sequence.DEFMETHOD("_do_print", function(output){
+    AST_Seq.DEFMETHOD("_do_print", function(output){
-        this.expressions.forEach(function(node, index) {
+        this.car.print(output);
-            if (index > 0) {
+        if (this.cdr) {
             output.comma();
             if (output.should_break()) {
                 output.newline();
                 output.indent();
             }
+            this.cdr.print(output);
         }
-            node.print(output);
     });
-    });
+    DEFPRINT(AST_Seq, function(self, output){
-    DEFPRINT(AST_Sequence, function(self, output){
         self._do_print(output);
         // var p = output.parent();
         // if (p instanceof AST_Statement) {
@@ -1242,8 +1207,9 @@ function OutputStream(options) {
         });
         else output.print("{}");
     });
-
+    DEFPRINT(AST_ObjectKeyVal, function(self, output){
-    function print_property_name(key, quote, output) {
+        var key = self.key;
+        var quote = self.quote;
         if (output.option("quote_keys")) {
             output.print_string(key + "");
         } else if ((typeof key == "number"
@@ -1251,7 +1217,7 @@ function OutputStream(options) {
                     && +key + "" == key)
                    && parseFloat(key) >= 0) {
             output.print(make_num(key));
-        } else if (RESERVED_WORDS(key) ? !output.option("ie8") : is_identifier_string(key)) {
+        } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
             if (quote && output.option("keep_quoted_props")) {
                 output.print_string(key, quote);
             } else {
@@ -1260,24 +1226,20 @@ function OutputStream(options) {
         } else {
             output.print_string(key, quote);
         }
-    }
-
-    DEFPRINT(AST_ObjectKeyVal, function(self, output){
-        print_property_name(self.key, self.quote, output);
         output.colon();
         self.value.print(output);
     });
-    AST_ObjectProperty.DEFMETHOD("_print_getter_setter", function(type, output) {
-        output.print(type);
-        output.space();
-        print_property_name(this.key.name, this.quote, output);
-        this.value._do_print(output, true);
-    });
     DEFPRINT(AST_ObjectSetter, function(self, output){
-        self._print_getter_setter("set", output);
+        output.print("set");
+        output.space();
+        self.key.print(output);
+        self.value._do_print(output, true);
     });
     DEFPRINT(AST_ObjectGetter, function(self, output){
-        self._print_getter_setter("get", output);
+        output.print("get");
+        output.space();
+        self.key.print(output);
+        self.value._do_print(output, true);
     });
     DEFPRINT(AST_Symbol, function(self, output){
         var def = self.definition();
@@ -1301,14 +1263,45 @@ function OutputStream(options) {
         }
     });
 
+    function regexp_safe_literal(code) {
+        return [
+            0x5c   , // \
+            0x2f   , // /
+            0x2e   , // .
+            0x2b   , // +
+            0x2a   , // *
+            0x3f   , // ?
+            0x28   , // (
+            0x29   , // )
+            0x5b   , // [
+            0x5d   , // ]
+            0x7b   , // {
+            0x7d   , // }
+            0x24   , // $
+            0x5e   , // ^
+            0x3a   , // :
+            0x7c   , // |
+            0x21   , // !
+            0x0a   , // \n
+            0x0d   , // \r
+            0x00   , // \0
+            0xfeff , // Unicode BOM
+            0x2028 , // unicode "line separator"
+            0x2029 , // unicode "paragraph separator"
+        ].indexOf(code) < 0;
+    };
+
     DEFPRINT(AST_RegExp, function(self, output){
-        var regexp = self.getValue();
+        var str = self.getValue().toString();
-        var str = regexp.toString();
-        if (regexp.raw_source) {
-            str = "/" + regexp.raw_source + str.slice(str.lastIndexOf("/"));
-        }
         if (output.option("ascii_only")) {
             str = output.to_ascii(str);
+        } else if (output.option("unescape_regexps")) {
+            str = str.split("\\\\").map(function(str){
+                return str.replace(/\\u[0-9a-fA-F]{4}|\\x[0-9a-fA-F]{2}/g, function(s){
+                    var code = parseInt(s.substr(2), 16);
+                    return regexp_safe_literal(code) ? String.fromCharCode(code) : s;
+                });
+            }).join("\\\\");
         }
         output.print(str);
         var p = output.parent();

lib/parse.js

@@ -111,10 +111,12 @@ var WHITESPACE_CHARS = makePredicate(characters(" \u00a0\n\r\t\f\u000b\u200b\u20
 
 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
@@ -283,11 +285,7 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
         S.regex_allowed = ((type == "operator" && !UNARY_POSTFIX(value)) ||
                            (type == "keyword" && KEYWORDS_BEFORE_EXPRESSION(value)) ||
                            (type == "punc" && PUNC_BEFORE_EXPRESSION(value)));
-        if (type == "punc" && value == ".") {
+        prev_was_dot = (type == "punc" && value == ".");
-            prev_was_dot = true;
-        } else if (!is_comment) {
-            prev_was_dot = false;
-        }
         var ret = {
             type    : type,
             value   : value,
@@ -475,31 +473,29 @@ function tokenizer($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;
+            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);
+          return token("regexp", new RegExp(regexp, mods));
-            regexp.raw_source = source;
-            return token("regexp", regexp);
         } catch(e) {
           parse_error(e.message);
         }
@@ -633,7 +629,8 @@ function tokenizer($TEXT, filename, html5_comments, shebang) {
     }
 
     next_token.has_directive = function(directive) {
-        return S.directives[directive] > 0;
+        return S.directives[directive] !== undefined &&
+            S.directives[directive] > 0;
     }
 
     return next_token;
@@ -682,7 +679,9 @@ 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 ]----- */
 
@@ -690,13 +689,14 @@ function parse($TEXT, options) {
 
     options = defaults(options, {
         bare_returns   : false,
+        cli            : false,
         expression     : false,
         filename       : null,
         html5_comments : true,
         shebang        : true,
         strict         : false,
         toplevel       : null,
-    }, true);
+    });
 
     var S = {
         input         : (typeof $TEXT == "string"
@@ -803,23 +803,28 @@ function parse($TEXT, options) {
     };
 
     var statement = embed_tokens(function() {
+        var tmp;
         handle_regexp();
         switch (S.token.type) {
           case "string":
-            if (S.in_directives) {
+            var dir = false;
-                var token = peek();
+            if (S.in_directives === true) {
-                if (S.token.raw.indexOf("\\") == -1
+                if ((is_token(peek(), "punc", ";") || peek().nlb) && 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;
+            if (dir) {
+                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":
@@ -851,97 +856,75 @@ 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,
+                    body      : in_loop(statement),
-                    condition : condition
+                    condition : (expect_token("keyword", "while"), tmp = parenthesised(), semicolon(true), 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();
+                return tmp = var_(), semicolon(), tmp;
-                var node = var_();
+
-                semicolon();
+              case "const":
-                return node;
+                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()
@@ -1051,32 +1034,29 @@ function parse($TEXT, options) {
         if (in_statement && !name)
             unexpected();
         expect("(");
-        var argnames = [];
+        return new ctor({
-        for (var first = true; !is("punc", ")");) {
+            name: name,
+            argnames: (function(first, a){
+                while (!is("punc", ")")) {
                     if (first) first = false; else expect(",");
-            argnames.push(as_symbol(AST_SymbolFunarg));
+                    a.push(as_symbol(AST_SymbolFunarg));
                 }
                 next();
-        var loop = S.in_loop;
+                return a;
-        var labels = S.labels;
+            })(true, []),
+            body: (function(loop, labels){
                 ++S.in_function;
                 S.in_directives = true;
                 S.input.push_directives_stack();
                 S.in_loop = 0;
                 S.labels = [];
-        var body = block_();
+                var a = 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({
+                return a;
-            name: name,
+            })(S.in_loop, S.labels)
-            argnames: argnames,
-            body: body
         });
     };
 
@@ -1172,12 +1152,12 @@ 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()
             }));
@@ -1191,7 +1171,15 @@ function parse($TEXT, options) {
     var var_ = function(no_in) {
         return new AST_Var({
             start       : prev(),
-            definitions : vardefs(no_in),
+            definitions : vardefs(no_in, false),
+            end         : prev()
+        });
+    };
+
+    var const_ = function() {
+        return new AST_Const({
+            start       : prev(),
+            definitions : vardefs(false, true),
             end         : prev()
         });
     };
@@ -1218,6 +1206,7 @@ function parse($TEXT, options) {
         var tok = S.token, ret;
         switch (tok.type) {
           case "name":
+          case "keyword":
             ret = _make_symbol(AST_SymbolRef);
             break;
           case "num":
@@ -1247,6 +1236,13 @@ function parse($TEXT, options) {
                 break;
             }
             break;
+          case "operator":
+            if (!is_identifier_string(tok.value)) {
+                croak("Invalid getter/setter name: " + tok.value,
+                    tok.line, tok.col, tok.pos);
+            }
+            ret = _make_symbol(AST_SymbolRef);
+            break;
         }
         next();
         return ret;
@@ -1280,7 +1276,7 @@ function parse($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();
@@ -1324,15 +1320,10 @@ function parse($TEXT, options) {
             var type = start.type;
             var name = as_property_name();
             if (type == "name" && !is("punc", ":")) {
-                var key = new AST_SymbolAccessor({
-                    start: S.token,
-                    name: as_property_name(),
-                    end: prev()
-                });
                 if (name == "get") {
                     a.push(new AST_ObjectGetter({
                         start : start,
-                        key   : key,
+                        key   : as_atom_node(),
                         value : create_accessor(),
                         end   : prev()
                     }));
@@ -1341,7 +1332,7 @@ function parse($TEXT, options) {
                 if (name == "set") {
                     a.push(new AST_ObjectSetter({
                         start : start,
-                        key   : key,
+                        key   : as_atom_node(),
                         value : create_accessor(),
                         end   : prev()
                     }));
@@ -1363,15 +1354,14 @@ 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();
@@ -1380,9 +1370,16 @@ function parse($TEXT, options) {
 
     function as_name() {
         var tmp = S.token;
-        if (tmp.type != "name") unexpected();
         next();
+        switch (tmp.type) {
+          case "name":
+          case "operator":
+          case "keyword":
+          case "atom":
             return tmp.value;
+          default:
+            unexpected();
+        }
     };
 
     function _make_symbol(type) {
@@ -1394,20 +1391,12 @@ 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;
     };
@@ -1451,14 +1440,14 @@ function parse($TEXT, options) {
         if (is("operator") && UNARY_PREFIX(start.value)) {
             next();
             handle_regexp();
-            var ex = make_unary(AST_UnaryPrefix, start, maybe_unary(allow_calls));
+            var ex = make_unary(AST_UnaryPrefix, start.value, maybe_unary(allow_calls));
             ex.start = start;
             ex.end = prev();
             return ex;
         }
         var val = expr_atom(allow_calls);
         while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) {
-            val = make_unary(AST_UnaryPostfix, S.token, val);
+            val = make_unary(AST_UnaryPostfix, S.token.value, val);
             val.start = start;
             val.end = S.token;
             next();
@@ -1466,19 +1455,9 @@ function parse($TEXT, options) {
         return val;
     };
 
-    function make_unary(ctor, token, expr) {
+    function make_unary(ctor, op, expr) {
-        var op = token.value;
+        if ((op == "++" || op == "--") && !is_assignable(expr))
-        switch (op) {
+            croak("Invalid use of " + op + " operator", null, ctor === AST_UnaryPrefix ? expr.start.col - 1 : null);
-          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;
-        }
         return new ctor({ operator: op, expression: expr });
     };
 
@@ -1523,6 +1502,7 @@ function parse($TEXT, options) {
     };
 
     function is_assignable(expr) {
+        if (options.cli) return true;
         return expr instanceof AST_PropAccess || expr instanceof AST_SymbolRef;
     };
 
@@ -1547,18 +1527,17 @@ function parse($TEXT, options) {
 
     var expression = function(commas, no_in) {
         var start = S.token;
-        var exprs = [];
+        var expr = maybe_assign(no_in);
-        while (true) {
+        if (commas && is("punc", ",")) {
-            exprs.push(maybe_assign(no_in));
-            if (!commas || !is("punc", ",")) break;
             next();
-            commas = true;
+            return new AST_Seq({
-        }
-        return exprs.length == 1 ? exprs[0] : new AST_Sequence({
                 start  : start,
-            expressions : exprs,
+                car    : expr,
+                cdr    : expression(true, no_in),
                 end    : peek()
             });
+        }
+        return expr;
     };
 
     function in_loop(cont) {

lib/propmangle.js

@@ -43,16 +43,16 @@
 
 "use strict";
 
-function find_builtins(reserved) {
+function find_builtins() {
     // NaN will be included due to Number.NaN
-    [
+    var a = [
         "null",
         "true",
         "false",
         "Infinity",
         "-Infinity",
         "undefined",
-    ].forEach(add);
+    ];
     [ Object, Array, Function, Number,
       String, Boolean, Error, Math,
       Date, RegExp
@@ -63,24 +63,24 @@ function find_builtins(reserved) {
         }
     });
     function add(name) {
-        push_uniq(reserved, name);
+        push_uniq(a, name);
     }
+    return a;
 }
 
 function mangle_properties(ast, options) {
     options = defaults(options, {
-        builtins: false,
         cache: null,
         debug: false,
-        keep_quoted: false,
+        ignore_quoted: false,
         only_cache: false,
         regex: null,
         reserved: null,
     });
 
     var reserved = options.reserved;
-    if (!Array.isArray(reserved)) reserved = [];
+    if (reserved == null)
-    if (!options.builtins) find_builtins(reserved);
+        reserved = find_builtins();
 
     var cache = options.cache;
     if (cache == null) {
@@ -91,12 +91,12 @@ function mangle_properties(ast, options) {
     }
 
     var regex = options.regex;
-    var keep_quoted = options.keep_quoted;
+    var ignore_quoted = options.ignore_quoted;
 
     // 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 = (options.debug !== false);
     var debug_name_suffix;
     if (debug) {
         debug_name_suffix = (options.debug === true ? "" : options.debug);
@@ -104,12 +104,12 @@ function mangle_properties(ast, options) {
 
     var names_to_mangle = [];
     var unmangleable = [];
-    var to_keep = {};
+    var ignored = {};
 
     // step 1: find candidates to mangle
     ast.walk(new TreeWalker(function(node){
         if (node instanceof AST_ObjectKeyVal) {
-            add(node.key, keep_quoted && node.quote);
+            add(node.key, ignore_quoted && node.quote);
         }
         else if (node instanceof AST_ObjectProperty) {
             // setter or getter, since KeyVal is handled above
@@ -119,14 +119,14 @@ function mangle_properties(ast, options) {
             add(node.property);
         }
         else if (node instanceof AST_Sub) {
-            addStrings(node.property, keep_quoted);
+            addStrings(node.property, ignore_quoted);
         }
     }));
 
     // step 2: transform the tree, renaming properties
     return ast.transform(new TreeTransformer(function(node){
         if (node instanceof AST_ObjectKeyVal) {
-            if (!(keep_quoted && node.quote))
+            if (!(ignore_quoted && node.quote))
                 node.key = mangle(node.key);
         }
         else if (node instanceof AST_ObjectProperty) {
@@ -137,7 +137,7 @@ function mangle_properties(ast, options) {
             node.property = mangle(node.property);
         }
         else if (node instanceof AST_Sub) {
-            if (!keep_quoted)
+            if (!ignore_quoted)
                 node.property = mangleStrings(node.property);
         }
         // else if (node instanceof AST_String) {
@@ -167,16 +167,16 @@ function mangle_properties(ast, options) {
     }
 
     function should_mangle(name) {
-        if (keep_quoted && name in to_keep) return false;
+        if (ignore_quoted && name in ignored) return false;
         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, keep) {
+    function add(name, ignore) {
-        if (keep) {
+        if (ignore) {
-            to_keep[name] = true;
+            ignored[name] = true;
             return;
         }
 
@@ -199,19 +199,19 @@ function mangle_properties(ast, options) {
                 // 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) && !(keep_quoted && debug_mangled in to_keep)) {
+                if (can_mangle(debug_mangled) && !(ignore_quoted && debug_mangled in ignored)) {
                     mangled = debug_mangled;
                 }
             }
 
             // either debug mode is off, or it is on and we could not use the mangled name
             if (!mangled) {
-                // Note: `can_mangle()` does not check if the name collides with the `to_keep` set
+                // note can_mangle() does not check if the name collides with the 'ignored' set
-                // (filled with quoted properties when `keep_quoted` is set). Make sure we add this
+                // (filled with quoted properties when ignore_quoted set). Make sure we add this
                 // check so we don't collide with a quoted name.
                 do {
                     mangled = base54(++cache.cname);
-                } while (!can_mangle(mangled) || keep_quoted && mangled in to_keep);
+                } while (!can_mangle(mangled) || (ignore_quoted && mangled in ignored));
             }
 
             cache.props.set(name, mangled);
@@ -219,17 +219,17 @@ function mangle_properties(ast, options) {
         return mangled;
     }
 
-    function addStrings(node, keep) {
+    function addStrings(node, ignore) {
         var out = {};
         try {
             (function walk(node){
                 node.walk(new TreeWalker(function(node){
-                    if (node instanceof AST_Sequence) {
+                    if (node instanceof AST_Seq) {
-                        walk(node.expressions[node.expressions.length - 1]);
+                        walk(node.cdr);
                         return true;
                     }
                     if (node instanceof AST_String) {
-                        add(node.value, keep);
+                        add(node.value, ignore);
                         return true;
                     }
                     if (node instanceof AST_Conditional) {
@@ -247,9 +247,8 @@ function mangle_properties(ast, options) {
 
     function mangleStrings(node) {
         return node.transform(new TreeTransformer(function(node){
-            if (node instanceof AST_Sequence) {
+            if (node instanceof AST_Seq) {
-                var last = node.expressions.length - 1;
+                node.cdr = mangleStrings(node.cdr);
-                node.expressions[last] = mangleStrings(node.expressions[last]);
             }
             else if (node instanceof AST_String) {
                 node.value = mangle(node.value);
@@ -261,4 +260,5 @@ function mangle_properties(ast, options) {
             return node;
         }));
     }
+
 }

lib/scope.js

@@ -76,7 +76,7 @@ SymbolDef.prototype = {
         else 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 && sym instanceof AST_SymbolLambda)
                 s = s.parent_scope;
             var def;
             if (this.defun && (def = this.defun.variables.get(this.name))) {
@@ -93,7 +93,7 @@ SymbolDef.prototype = {
 AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     options = defaults(options, {
         cache: null,
-        ie8: false,
+        screw_ie8: true,
     });
 
     // pass 1: setup scope chaining and handle definitions
@@ -156,7 +156,8 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             // later.
             (node.scope = defun.parent_scope).def_function(node);
         }
-        else if (node instanceof AST_SymbolVar) {
+        else if (node instanceof AST_SymbolVar
+            || node instanceof AST_SymbolConst) {
             defun.def_variable(node);
             if (defun !== scope) {
                 node.mark_enclosed(options);
@@ -183,8 +184,16 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     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_Lambda) {
+            var prev_func = func;
+            func = node;
+            descend();
+            func = prev_func;
+            return true;
+        }
         if (node instanceof AST_LoopControl && node.label) {
             node.label.thedef.references.push(node);
             return true;
@@ -211,7 +220,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     self.walk(tw);
 
     // pass 3: fix up any scoping issue with IE8
-    if (options.ie8) {
+    if (!options.screw_ie8) {
         self.walk(new TreeWalker(function(node, descend) {
             if (node instanceof AST_SymbolCatch) {
                 var name = node.name;
@@ -259,7 +268,7 @@ AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){
 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({
+    this.def_variable(new AST_SymbolVar({
         name: "arguments",
         start: this.start,
         end: this.end
@@ -316,8 +325,8 @@ 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.
+        // shadow a name excepted from mangling.
-        if (options.reserved.indexOf(m) >= 0) continue;
+        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
@@ -352,8 +361,15 @@ AST_Symbol.DEFMETHOD("unmangleable", function(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
@@ -364,9 +380,13 @@ AST_Symbol.DEFMETHOD("undeclared", function(){
     return this.definition().undeclared;
 });
 
-AST_LabelRef.DEFMETHOD("undeclared", return_false);
+AST_LabelRef.DEFMETHOD("undeclared", function(){
+    return false;
+});
 
-AST_Label.DEFMETHOD("undeclared", return_false);
+AST_Label.DEFMETHOD("undeclared", function(){
+    return false;
+});
 
 AST_Symbol.DEFMETHOD("definition", function(){
     return this.thedef;
@@ -377,22 +397,21 @@ AST_Symbol.DEFMETHOD("global", function(){
 });
 
 AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){
-    options = defaults(options, {
+    return defaults(options, {
         eval        : false,
-        ie8         : false,
+        except      : [],
         keep_fnames : false,
-        reserved    : [],
+        screw_ie8   : true,
+        sort        : false, // Ignored. Flag retained for backwards compatibility.
         toplevel    : 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');
+    options.except.push('arguments');
 
     // We only need to mangle declaration nodes.  Special logic wired
     // into the code generator will display the mangled name if it's
@@ -403,7 +422,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
 
     if (options.cache) {
         this.globals.each(function(symbol){
-            if (options.reserved.indexOf(symbol.name) < 0) {
+            if (options.except.indexOf(symbol.name) < 0) {
                 to_mangle.push(symbol);
             }
         });
@@ -420,7 +439,7 @@ 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);
                 }
             });
@@ -433,7 +452,7 @@ 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;
         }
@@ -473,6 +492,8 @@ AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options){
         }
         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)
@@ -552,3 +573,89 @@ var base54 = (function() {
     };
     return base54;
 })();
+
+AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
+    options = defaults(options, {
+        assign_to_global : true,
+        eval             : true,
+        func_arguments   : true,
+        nested_defuns    : true,
+        undeclared       : false, // this makes a lot of noise
+        unreferenced     : 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/transform.js

@@ -174,8 +174,9 @@ TreeTransformer.prototype = new TreeWalker;
         self.args = do_list(self.args, tw);
     });
 
-    _(AST_Sequence, function(self, tw){
+    _(AST_Seq, function(self, tw){
-        self.expressions = do_list(self.expressions, 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);
 };
@@ -339,7 +346,7 @@ function first_in_statement(stack) {
     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) ||
+        if ((p instanceof AST_Seq           && p.car === 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 ) ||

package.json

@@ -4,7 +4,7 @@
   "homepage": "http://lisperator.net/uglifyjs",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.0.16",
+  "version": "2.8.24",
   "engines": {
     "node": ">=0.8.0"
   },
@@ -29,16 +29,26 @@
     "LICENSE"
   ],
   "dependencies": {
-    "commander": "~2.9.0",
+    "source-map": "~0.5.1",
-    "source-map": "~0.5.1"
+    "yargs": "~3.10.0"
   },
   "devDependencies": {
-    "acorn": "~5.0.3",
+    "acorn": "~0.6.0",
-    "mocha": "~2.3.4",
+    "escodegen": "~1.3.3",
-    "semver": "~5.3.0"
+    "esfuzz": "~0.3.1",
+    "estraverse": "~1.5.1",
+    "mocha": "~2.3.4"
+  },
+  "optionalDependencies": {
+    "uglify-to-browserify": "~1.0.0"
+  },
+  "browserify": {
+    "transform": [
+      "uglify-to-browserify"
+    ]
   },
   "scripts": {
     "test": "node test/run-tests.js"
   },
-  "keywords": ["uglify", "uglify-js", "minify", "minifier", "es5"]
+  "keywords": ["uglify", "uglify-js", "minify", "minifier"]
 }

test/benchmark.js

@@ -4,13 +4,12 @@
 "use strict";
 
 var createHash = require("crypto").createHash;
-var fetch = require("./fetch");
 var fork = require("child_process").fork;
 var args = process.argv.slice(2);
 if (!args.length) {
-    args.push("-mc");
+    args.push("-mc", "warnings=false");
 }
-args.push("--timings");
+args.push("--stats");
 var urls = [
     "https://code.jquery.com/jquery-3.2.1.js",
     "https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.4/angular.js",
@@ -31,6 +30,11 @@ function done() {
             console.log();
             console.log(url);
             console.log(info.log);
+            var elapsed = 0;
+            info.log.replace(/: ([0-9]+\.[0-9]{3})s/g, function(match, time) {
+                elapsed += parseFloat(time);
+            });
+            console.log("Run-time:", elapsed.toFixed(3), "s");
             console.log("Original:", info.input, "bytes");
             console.log("Uglified:", info.output, "bytes");
             console.log("SHA1 sum:", info.sha1);
@@ -53,8 +57,7 @@ urls.forEach(function(url) {
         output: 0,
         log: ""
     };
-    fetch(url, function(err, res) {
+    require(url.slice(0, url.indexOf(":"))).get(url, function(res) {
-        if (err) throw err;
         var uglifyjs = fork("bin/uglifyjs", args, { silent: true });
         res.on("data", function(data) {
             results[url].input += data.length;

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/ascii.js

@@ -2,7 +2,7 @@ ascii_only_true: {
     options = {}
     beautify = {
         ascii_only : true,
-        ie8        : false,
+        screw_ie8  : true,
         beautify   : false,
     }
     input: {
@@ -20,7 +20,7 @@ ascii_only_false: {
     options = {}
     beautify = {
         ascii_only : false,
-        ie8        : false,
+        screw_ie8  : true,
         beautify   : false,
     }
     input: {
@@ -33,3 +33,4 @@ ascii_only_false: {
     }
     expect_exact: 'function f(){return"\\x000\\x001\\x007\\08\\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/collapse_vars.js

@@ -2,7 +2,7 @@ collapse_vars_side_effects_1: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -68,10 +68,11 @@ collapse_vars_side_effects_1: {
             log(x, s.charAt(i++), y, 7);
         }
         function f4() {
-            var i = 10,
+            var log = console.log.bind(console),
+                i = 10,
                 x = i += 2,
                 y = i += 3;
-            console.log.bind(console)(x, i += 4, y, i);
+            log(x, i += 4, y, i);
         }
         f1(), f2(), f3(), f4();
     }
@@ -150,7 +151,7 @@ collapse_vars_issue_721: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         define(["require", "exports", 'handlebars'], function (require, exports, hb) {
@@ -216,7 +217,7 @@ collapse_vars_properties: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(obj) {
@@ -243,7 +244,7 @@ collapse_vars_if: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -293,7 +294,7 @@ collapse_vars_while: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:false, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(y) {
@@ -392,9 +393,9 @@ collapse_vars_do_while: {
         }
         function f3(y) {
             function fn(n) { console.log(n); }
-            var a = 2, x = 7;
+            var a = 2;
             do {
-                fn(a = x);
+                fn(a = 7);
                 break;
             } while (y);
         }
@@ -467,9 +468,8 @@ collapse_vars_do_while_drop_assign: {
         }
         function f3(y) {
             function fn(n) { console.log(n); }
-            var x = 7;
             do {
-                fn(x);
+                fn(7);
                 break;
             } while (y);
         }
@@ -583,8 +583,8 @@ collapse_vars_assignment: {
             return a = a;
         }
         function f1(c) {
-            var a = 3 / c;
+            const a = 3 / c;
-            var b = 1 - a;
+            const b = 1 - a;
             return b;
         }
         function f2(c) {
@@ -670,8 +670,8 @@ collapse_vars_lvalues: {
         function f4(x) { var a = (x -= 3); return x + a; }
         function f5(x) { var w = e1(), v = e2(), c = v = --x; return (w = x) - c; }
         function f6(x) { var w = e1(), v = e2(); return (v = --x) - (w = x); }
-        function f7(x) { var w = e1(); return (w = x) - (e2() - x); }
+        function f7(x) { var w = e1(), v = e2(), c = v - x; return (w = x) - c; }
-        function f8(x) { var w = e1(); return (w = x) - (e2() - x); }
+        function f8(x) { var w = e1(), v = e2(); return (w = x) - (v - x); }
         function f9(x) { var w = e1(); return e2() - x - (w = x); }
     }
 }
@@ -700,10 +700,10 @@ collapse_vars_lvalues_drop_assign: {
         function f2(x) { var z = x, a = ++z; return z += a; }
         function f3(x) { var a = (x -= 3); return x + a; }
         function f4(x) { var a = (x -= 3); return x + a; }
-        function f5(x) { e1(); var v = e2(), c = v = --x; return x - c; }
+        function f5(x) { var v = (e1(), e2()), c = v = --x; return x - c; }
         function f6(x) { e1(), e2(); return --x - x; }
-        function f7(x) { e1(); return x - (e2() - x); }
+        function f7(x) { var v = (e1(), e2()), c = v - x; return x - c; }
-        function f8(x) { e1(); return x - (e2() - x); }
+        function f8(x) { var v = (e1(), e2()); return x - (v - x); }
         function f9(x) { e1(); return e2() - x - x; }
     }
 }
@@ -712,7 +712,7 @@ collapse_vars_misc1: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f0(o, a, h) {
@@ -724,10 +724,10 @@ collapse_vars_misc1: {
             return t;
         }
         function f1(x) { var y = 5 - x; return y; }
-        function f2(x) { var z = foo(), y = z / (5 - x); return y; }
+        function f2(x) { const z = foo(), y = z / (5 - x); return y; }
         function f3(x) { var z = foo(), y = (5 - x) / z; return y; }
         function f4(x) { var z = foo(), y = (5 - u) / z; return y; }
-        function f5(x) { var z = foo(), y = (5 - window.x) / z; return y; }
+        function f5(x) { const z = foo(), y = (5 - window.x) / z; return y; }
         function f6() { var b = window.a * window.z; return b && zap(); }
         function f7() { var b = window.a * window.z; return b + b; }
         function f8() { var b = window.a * window.z; var c = b + 5; return b + c; }
@@ -744,7 +744,7 @@ collapse_vars_misc1: {
         function f2(x) { return foo() / (5 - x) }
         function f3(x) { return (5 - x) / foo() }
         function f4(x) { var z = foo(); return (5 - u) / z }
-        function f5(x) { var z = foo(); return (5 - window.x) / z }
+        function f5(x) { const z = foo(); return (5 - window.x) / z }
         function f6() { return window.a * window.z && zap() }
         function f7() { var b = window.a * window.z; return b + b }
         function f8() { var b = window.a * window.z; return b + (b + 5) }
@@ -789,7 +789,7 @@ collapse_vars_repeated: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -812,17 +812,19 @@ collapse_vars_repeated: {
     }
     expect: {
         function f1() {
-            return -3;
+            return -3
         }
         function f2(x) {
-            return x;
+            return x
         }
         (function(x){
-             console.log("GOOD!!");
+             var a = "GOOD" + x, e = "BAD", e = a;
-        })(),
+             console.log(e + "!");
+        })("!"),
         (function(x){
-             console.log("GOOD!!");
+            var a = "GOOD" + x, e = "BAD" + x, e = a;
-        })();
+            console.log(e + "!");
+        })("!");
     }
     expect_stdout: true
 }
@@ -831,7 +833,7 @@ collapse_vars_closures: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function constant_vars_can_be_replaced_in_any_scope() {
@@ -921,7 +923,7 @@ collapse_vars_try: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -1046,9 +1048,10 @@ collapse_vars_object: {
     }
     expect: {
         function f0(x, y) {
+            var z = x + y;
             return {
                 get b() { return 7; },
-                r: x + y
+                r: z
             };
         }
         function f1(x, y) {
@@ -1118,7 +1121,7 @@ collapse_vars_constants: {
     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, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(x) {
@@ -1146,7 +1149,7 @@ collapse_vars_constants: {
         function f3(x) {
             var b = x.prop;
             sideeffect1();
-            return b + (function() { return -9; })();
+            return b + -9;
         }
     }
 }
@@ -1156,7 +1159,7 @@ collapse_vars_arguments: {
         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,
-        toplevel:true, reduce_vars:true
+        toplevel:true
     }
     input: {
         var outer = function() {
@@ -1283,7 +1286,6 @@ collapse_vars_regexp: {
         join_vars:     true,
         cascade:       true,
         side_effects:  true,
-        reduce_vars:   true,
     }
     input: {
         function f1() {
@@ -1317,8 +1319,8 @@ collapse_vars_regexp: {
             };
         }
         (function(){
-            var result, rx = /ab*/g;
+            var result, s = "acdabcdeabbb", rx = /ab*/g;
-            while (result = rx.exec("acdabcdeabbb"))
+            while (result = rx.exec(s))
                 console.log(result[0]);
         })();
     }
@@ -1342,10 +1344,7 @@ issue_1537: {
 issue_1562: {
     options = {
         collapse_vars: true,
-        evaluate: true,
-        reduce_vars: true,
         toplevel: true,
-        unused: true,
     }
     input: {
         var v = 1, B = 2;
@@ -1364,11 +1363,14 @@ issue_1562: {
         var v = 1;
         for (v in objs) f(2);
 
-        while(5) bar(10);
+        var x = 3;
+        while(x + 2) bar(10);
 
-        do bar(20); while(6);
+        var y = 4;
+        do bar(20); while(y + 2);
 
-        for (; f(7) ;) bar(30);
+        var z = 5;
+        for (; f(z + 2) ;) bar(30);
     }
 }
 
@@ -1591,598 +1593,48 @@ var_side_effects_3: {
     expect_stdout: true
 }
 
-reduce_vars_assign: {
+reassign_const_1: {
     options = {
         collapse_vars: true,
-        reduce_vars: true,
-    }
-    input: {
-        !function() {
-            var a = 1;
-            a = [].length,
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = 1;
-            a = [].length,
-            console.log(a);
-        }();
-    }
-    expect_stdout: "0"
-}
-
-iife_1: {
-    options = {
-        collapse_vars: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var log = function(x) {
-            console.log(x);
-        }, foo = bar();
-        log(foo);
-    }
-    expect: {
-        (function(x) {
-            console.log(x);
-        })(bar());
-    }
-}
-
-iife_2: {
-    options = {
-        collapse_vars: true,
-        reduce_vars: false,
-        toplevel: true,
-        unused: false,
-    }
-    input: {
-        var foo = bar();
-        !function(x) {
-            console.log(x);
-        }(foo);
-    }
-    expect: {
-        !function(x) {
-            console.log(x);
-        }(bar());
-    }
-}
-
-var_defs: {
-    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: {
-        var f1 = function(x, y) {
-            var a, b, r = x + y, q = r * r, z = q - r, a = z, b = 7;
-            console.log(a + b);
-        };
-        f1("1", 0);
-    }
-    expect: {
-        var f1 = function(x, y) {
-            var r = x + y, a = r * r - r, b = 7;
-            console.log(a + b);
-        };
-        f1("1", 0);
-    }
-    expect_stdout: "97"
-}
-
-assignment: {
-    options = {
-        collapse_vars: true,
-        unused: true,
     }
     input: {
         function f() {
-            var a;
+            const a = 1;
-            a = x;
+            a = 2;
             return a;
         }
+        console.log(f());
     }
     expect: {
         function f() {
-            return x;
+            const a = 1;
-        }
+            a = 2;
-    }
-}
-
-for_init: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y) {
-            var a = x;
-            var b = y;
-            for (a; b;);
-        }
-    }
-    expect: {
-        function f(x, y) {
-            var b = y;
-            for (x; b;);
-        }
-    }
-}
-
-switch_case: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y, z) {
-            var a = x();
-            var b = y();
-            var c = z;
-            switch (a) {
-              default: d();
-              case b: e();
-              case c: f();
-            }
-        }
-    }
-    expect: {
-        function f(x, y, z) {
-            var c = z;
-            switch (x()) {
-              default: d();
-              case y(): e();
-              case c: f();
-            }
-        }
-    }
-}
-
-issue_27: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        (function(jQuery) {
-            var $;
-            $ = jQuery;
-            $("body").addClass("foo");
-        })(jQuery);
-    }
-    expect: {
-        (function(jQuery) {
-            jQuery("body").addClass("foo");
-        })(jQuery);
-    }
-}
-
-modified: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f1(b) {
-            var a = b;
-            return b + a;
-        }
-        function f2(b) {
-            var a = b;
-            return b++ + a;
-        }
-        function f3(b) {
-            var a = b++;
-            return b + a;
-        }
-        function f4(b) {
-            var a = b++;
-            return b++ + a;
-        }
-        function f5(b) {
-            var a = function() {
-                return b;
-            }();
-            return b++ + a;
-        }
-        console.log(f1(1), f2(1), f3(1), f4(1), f5(1));
-    }
-    expect: {
-        function f1(b) {
-            return b + b;
-        }
-        function f2(b) {
-            var a = b;
-            return b++ + a;
-        }
-        function f3(b) {
-            var a = b++;
-            return b + a;
-        }
-        function f4(b) {
-            var a = b++;
-            return b++ + a;
-        }
-        function f5(b) {
-            var a = function() {
-                return b;
-            }();
-            return b++ + a;
-        }
-        console.log(f1(1), f2(1), f3(1), f4(1), f5(1));
-    }
-    expect_stdout: "2 2 3 3 2"
-}
-
-issue_1858: {
-    options = {
-        collapse_vars: true,
-        pure_getters: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(x) {
-            var a = {}, b = a.b = x;
-            return a.b + b;
-        }(1));
-    }
-    expect: {
-        console.log(function(x) {
-            var a = {}, b = a.b = x;
-            return a.b + b;
-        }(1));
-    }
-    expect_stdout: "2"
-}
-
-anonymous_function: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        console.log(function f(a) {
-            f ^= 0;
-            return f * a;
-        }(1));
-    }
-    expect: {
-        console.log(function f(a) {
-            f ^= 0;
-            return f * a;
-        }(1));
-    }
-    expect_stdout: true
-}
-
-side_effects_property: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = [];
-        var b = 0;
-        a[b++] = function() { return 42;};
-        var c = a[b++]();
-        console.log(c);
-    }
-    expect: {
-        var a = [];
-        var b = 0;
-        a[b++] = function() { return 42;};
-        var c = a[b++]();
-        console.log(c);
-    }
-    expect_stdout: true
-}
-
-undeclared: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y) {
-            var a;
-            a = x;
-            b = y;
-            return b + a;
-        }
-    }
-    expect: {
-        function f(x, y) {
-            var a;
-            a = x;
-            b = y;
-            return b + a;
-        }
-    }
-}
-
-ref_scope: {
-    options = {
-        collapse_vars: 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(f());
-        console.log(function() {
+    }
-            var a = 1, b = 2, c = 3;
+    expect_stdout: true
-            b = b /= a = c++;
+}
-            return function() {
+
+reassign_const_2: {
+    options = {
+        collapse_vars: true,
+    }
+    input: {
+        function f() {
+            const a = 1;
+            ++a;
             return a;
-            }() + b;
+        }
-        }());
+        console.log(f());
+    }
+    expect: {
+        function f() {
+            const a = 1;
+            ++a;
+            return a;
+        }
+        console.log(f());
     }
     expect_stdout: true
 }
-
-chained_1: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = 2;
-        var a = 3 / a;
-        console.log(a);
-    }
-    expect: {
-        var a = 3 / (a = 2);
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-chained_2: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        var a = 2;
-        a = 3 / a;
-        console.log(a);
-    }
-    expect: {
-        var a;
-        a = 3 / (a = 2);
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-chained_3: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(a, b) {
-            var c = a, c = b;
-            b++;
-            return c;
-        }(1, 2));
-    }
-    expect: {
-        console.log(function(a, b) {
-            var c = a, c = b;
-            b++;
-            return c;
-        }(1, 2));
-    }
-    expect_stdout: "2"
-}
-
-boolean_binary_1: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = 1;
-        a++;
-        (function() {} || a || 3).toString();
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        a++;
-        (function() {} || a || 3).toString();
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-boolean_binary_2: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var c = 0;
-        c += 1;
-        (function() {
-            c = 1 + c;
-        } || 9).toString();
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        c += 1;
-        (function() {
-            c = 1 + c;
-        } || 9).toString();
-        console.log(c);
-    }
-    expect_stdout: true
-}
-
-inner_lvalues: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        var a, b = 10;
-        var a = (--b || a || 3).toString(), c = --b + -a;
-        console.log(null, a, b);
-    }
-    expect: {
-        var a, b = 10;
-        var a = (--b || a || 3).toString(), c = --b + -a;
-        console.log(null, a, b);
-    }
-    expect_stdout: true
-}
-
-double_def: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = x, a = a && y;
-        a();
-    }
-    expect: {
-        var a = x;
-        (a = a && y)();
-    }
-}
-
-toplevel_single_reference: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        for (var b in x) {
-            var a = b;
-            b(a);
-        }
-    }
-    expect: {
-        var a;
-        for (var b in x)
-            b(a = b);
-    }
-}
-
-unused_orig: {
-    options = {
-        collapse_vars: true,
-        passes: 2,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        var a = 1;
-        console.log(function(b) {
-            var a;
-            var c = b;
-            for (var d in c) {
-                var a = c[0];
-                return --b + a;
-            }
-            try {
-            } catch (e) {
-                --b + a;
-            }
-            a && a.NaN;
-        }([2]), a);
-    }
-    expect: {
-        var a = 1;
-        console.log(function(b) {
-            var c = b;
-            for (var d in c) {
-                var a = c[0];
-                return --b + a;
-            }
-            a && a.NaN;
-        }([2]), a);
-    }
-    expect_stdout: "3 1"
-}
-
-issue_315: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        keep_fargs: false,
-        reduce_vars: true,
-        sequences: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(s) {
-            var w, _i, _len, _ref, _results;
-            _ref = s.trim().split(" ");
-            _results = [];
-            for (_i = 0, _len = _ref.length; _i < _len; _i++) {
-                w = _ref[_i];
-                _results.push(w.toLowerCase());
-            }
-            return _results;
-        }("test"));
-    }
-    expect: {
-        console.log(function() {
-            var w, _i, _len, _ref, _results;
-            for (_results = [], _i = 0, _len = (_ref = "test".trim().split(" ")).length; _i < _len ; _i++)
-                w = _ref[_i], _results.push(w.toLowerCase());
-            return _results;
-        }());
-    }
-    expect_stdout: true
-}
-
-lvalues_def: {
-    options = {
-        collapse_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var a = 0, b = 1;
-        var a = b++, b = +function() {}();
-        a && a[a++];
-        console.log(a, b);
-    }
-    expect: {
-        var a = 0, b = 1;
-        var a = b++, b = +void 0;
-        a && a[a++];
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-compound_assignment: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        a = 1;
-        a += a + 2;
-        console.log(a);
-    }
-    expect: {
-        var a;
-        a = 1;
-        a += a + 2;
-        console.log(a);
-    }
-    expect_stdout: "4"
-}

test/compress/conditionals.js

@@ -979,12 +979,12 @@ delete_conditional_1: {
         console.log(delete (1 ? 0 / 0 : x));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }
@@ -1006,12 +1006,12 @@ delete_conditional_2: {
         console.log(delete (0 ? x : 0 / 0));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((Infinity, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }

test/compress/const.js

@@ -0,0 +1,166 @@
+issue_1191: {
+    options = {
+        evaluate      : true,
+        booleans      : true,
+        comparisons   : true,
+        dead_code     : true,
+        conditionals  : true,
+        side_effects  : true,
+        unused        : true,
+        hoist_funs    : true,
+        if_return     : true,
+        join_vars     : true,
+        sequences     : false,
+        collapse_vars : false,
+        reduce_vars   : true,
+    }
+    input: {
+        function foo(rot) {
+            const rotTol = 5;
+            if (rot < -rotTol || rot > rotTol)
+                bar();
+            baz();
+        }
+    }
+    expect: {
+        function foo(rot) {
+            (rot < -5 || rot > 5) && bar();
+            baz();
+        }
+    }
+}
+
+issue_1194: {
+    options = {
+        evaluate      : true,
+        booleans      : true,
+        comparisons   : true,
+        dead_code     : true,
+        conditionals  : true,
+        side_effects  : true,
+        unused        : true,
+        hoist_funs    : true,
+        if_return     : true,
+        join_vars     : true,
+        sequences     : false,
+        collapse_vars : false,
+        reduce_vars   : true,
+    }
+    input: {
+        function f1() {const a = "X"; return a + a;}
+        function f2() {const aa = "X"; return aa + aa;}
+        function f3() {const aaa = "X"; return aaa + aaa;}
+    }
+    expect: {
+        function f1(){return"XX"}
+        function f2(){return"XX"}
+        function f3(){return"XX"}
+    }
+}
+
+issue_1396: {
+    options = {
+        evaluate      : true,
+        booleans      : true,
+        comparisons   : true,
+        dead_code     : true,
+        conditionals  : true,
+        side_effects  : true,
+        unused        : true,
+        hoist_funs    : true,
+        if_return     : true,
+        join_vars     : true,
+        sequences     : false,
+        collapse_vars : false,
+        reduce_vars   : true,
+    }
+    input: {
+        function foo(a) {
+            const VALUE = 1;
+            console.log(2 | VALUE);
+            console.log(VALUE + 1);
+            console.log(VALUE);
+            console.log(a & VALUE);
+        }
+        function bar() {
+            const s = "01234567890123456789";
+            console.log(s + s + s + s + s);
+
+            const CONSTANT = "abc";
+            console.log(CONSTANT + CONSTANT + CONSTANT + CONSTANT + CONSTANT);
+        }
+    }
+    expect: {
+        function foo(a) {
+            console.log(3);
+            console.log(2);
+            console.log(1);
+            console.log(1 & a);
+        }
+        function bar() {
+            const s = "01234567890123456789";
+            console.log(s + s + s + s + s);
+
+            console.log("abcabcabcabcabc");
+        }
+    }
+}
+
+unused_regexp_literal: {
+    options = {
+        evaluate      : true,
+        booleans      : true,
+        comparisons   : true,
+        dead_code     : true,
+        conditionals  : true,
+        side_effects  : true,
+        unused        : true,
+        hoist_funs    : true,
+        if_return     : true,
+        join_vars     : true,
+        sequences     : false,
+        collapse_vars : false,
+    }
+    input: {
+        function f(){ var a = /b/; }
+    }
+    expect: {
+        function f(){}
+    }
+}
+
+regexp_literal_not_const: {
+    options = {
+        evaluate      : true,
+        booleans      : true,
+        comparisons   : true,
+        dead_code     : true,
+        conditionals  : true,
+        side_effects  : true,
+        unused        : true,
+        hoist_funs    : true,
+        if_return     : true,
+        join_vars     : true,
+        sequences     : false,
+        collapse_vars : false,
+        reduce_vars   : true,
+    }
+    input: {
+        (function(){
+            var result;
+            const s = 'acdabcdeabbb';
+            const REGEXP_LITERAL = /ab*/g;
+            while (result = REGEXP_LITERAL.exec(s)) {
+                console.log(result[0]);
+            }
+        })();
+    }
+    expect: {
+        (function() {
+            var result;
+            const REGEXP_LITERAL = /ab*/g;
+            while (result = REGEXP_LITERAL.exec("acdabcdeabbb")) console.log(result[0]);
+        })();
+    }
+    expect_stdout: true
+}

test/compress/dead-code.js

@@ -31,7 +31,7 @@ dead_code_2_should_warn: {
         function f() {
             g();
             x = 10;
-            throw new Error("foo");
+            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.
@@ -46,60 +46,16 @@ dead_code_2_should_warn: {
                 })();
             }
         }
-        f();
     }
     expect: {
         function f() {
             g();
             x = 10;
-            throw new Error("foo");
+            throw "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: {
@@ -122,7 +78,6 @@ dead_code_constant_boolean_should_warn_more: {
             foo();
             var moo;
         }
-        bar();
     }
     expect: {
         var foo;
@@ -131,46 +86,133 @@ dead_code_constant_boolean_should_warn_more: {
         // 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: {
+dead_code_const_declaration: {
     options = {
         dead_code    : true,
         loops        : true,
         booleans     : true,
         conditionals : true,
         evaluate     : true,
-        side_effects : true,
+        reduce_vars  : true,
     };
     input: {
-        "use strict";
+        var unused;
-        while (!((foo && bar) || (x + "0"))) {
+        const CONST_FOO = false;
+        if (CONST_FOO) {
             console.log("unreachable");
-            var foo;
+            var moo;
             function bar() {}
         }
-        for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
-            asdf();
-            foo();
-            var moo;
-        }
-        bar();
     }
     expect: {
-        "use strict";
+        var unused;
-        var foo;
+        const CONST_FOO = !1;
-        // nothing for the while
-        // as for the for, it should keep:
-        var x = 10, y;
         var moo;
-        bar();
+        function bar() {}
+    }
+    expect_stdout: true
+}
+
+dead_code_const_annotation: {
+    options = {
+        dead_code    : true,
+        loops        : true,
+        booleans     : true,
+        conditionals : true,
+        evaluate     : true,
+        reduce_vars  : true,
+        toplevel     : true,
+    };
+    input: {
+        var unused;
+        /** @const */ var CONST_FOO_ANN = false;
+        if (CONST_FOO_ANN) {
+            console.log("unreachable");
+            var moo;
+            function bar() {}
+        }
+    }
+    expect: {
+        var unused;
+        var CONST_FOO_ANN = !1;
+        var moo;
+        function bar() {}
+    }
+    expect_stdout: true
+}
+
+dead_code_const_annotation_regex: {
+    options = {
+        dead_code    : true,
+        loops        : true,
+        booleans     : true,
+        conditionals : true,
+        evaluate     : 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;
+        CONST_FOO_ANN && console.log('reachable');
+    }
+    expect_stdout: true
+}
+
+dead_code_const_annotation_complex_scope: {
+    options = {
+        dead_code    : true,
+        loops        : true,
+        booleans     : true,
+        conditionals : true,
+        evaluate     : true,
+        reduce_vars  : true,
+        toplevel     : true,
+    };
+    input: {
+        var unused_var;
+        /** @const */ var test = 'test';
+        // @const
+        var CONST_FOO_ANN = false;
+        var unused_var_2;
+        if (CONST_FOO_ANN) {
+            console.log("unreachable");
+            var moo;
+            function bar() {}
+        }
+        if (test === 'test') {
+            var beef = 'good';
+            /** @const */ var meat = 'beef';
+            var pork = 'bad';
+            if (meat === 'pork') {
+                console.log('also unreachable');
+            } else if (pork === 'good') {
+                console.log('reached, not const');
+            }
+        }
+    }
+    expect: {
+        var unused_var;
+        var test = 'test';
+        var CONST_FOO_ANN = !1;
+        var unused_var_2;
+        var moo;
+        function bar() {}
+        var beef = 'good';
+        var meat = 'beef';
+        var pork = 'bad';
     }
     expect_stdout: true
-    node_version: ">=4"
 }
 
 try_catch_finally: {
@@ -214,19 +256,3 @@ try_catch_finally: {
         "1",
     ]
 }
-
-accessor: {
-    options = {
-        side_effects: true,
-    }
-    input: {
-        ({
-            get a() {},
-            set a(v){
-                this.b = 2;
-            },
-            b: 1
-        });
-    }
-    expect: {}
-}

test/compress/drop-unused.js

@@ -649,6 +649,37 @@ drop_value: {
     }
 }
 
+const_assign: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            const b = 2;
+            return 1 + b;
+        }
+
+        function g() {
+            const b = 2;
+            b = 3;
+            return 1 + b;
+        }
+    }
+    expect: {
+        function f() {
+            return 3;
+        }
+
+        function g() {
+            const b = 2;
+            b = 3;
+            return 1 + b;
+        }
+    }
+}
+
 issue_1539: {
     options = {
         cascade: true,
@@ -751,12 +782,12 @@ issue_1583: {
     expect: {
         function m(t) {
             (function(e) {
-                t = e();
+                t = (function() {
-            })(function() {
                     return (function(a) {
                         return a;
                     })(function(a) {});
-            });
+                })();
+            })();
         }
     }
 }
@@ -785,6 +816,10 @@ issue_1709: {
                 var x = 1;
                 return x;
             }(),
+            function y() {
+                const y = 2;
+                return y;
+            }(),
             function z() {
                 function z() {}
                 return z;
@@ -797,6 +832,10 @@ issue_1709: {
                 var x = 1;
                 return x;
             }(),
+            function() {
+                const y = 2;
+                return y;
+            }(),
             function() {
                 function z() {}
                 return z;
@@ -896,8 +935,7 @@ issue_1715_3: {
             try {
                 console;
             } catch (a) {
-                var a;
+                var a = x();
-                x();
             }
         }
         f();
@@ -992,33 +1030,6 @@ delete_assign_2: {
     expect_stdout: true
 }
 
-drop_var: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var a;
-        console.log(a, b);
-        var a = 1, b = 2;
-        console.log(a, b);
-        var a = 3;
-        console.log(a, b);
-    }
-    expect: {
-        console.log(a, b);
-        var a = 1, b = 2;
-        console.log(a, b);
-        a = 3;
-        console.log(a, b);
-    }
-    expect_stdout: [
-        "undefined undefined",
-        "1 2",
-        "3 2",
-    ]
-}
-
 issue_1830_1: {
     options = {
         unused: true,
@@ -1054,57 +1065,27 @@ issue_1830_2: {
     expect_stdout: "1"
 }
 
-issue_1838: {
+reassign_const: {
     options = {
-        join_vars: true,
+        cascade: true,
-        loops: true,
+        sequences: true,
-        unused: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        function f() {
-            var b = a;
-            while (c);
-        }
-    }
-    expect_exact: [
-        "function f() {",
-        "    for (a; c; ) ;",
-        "}",
-    ]
-}
-
-var_catch_toplevel: {
-    options = {
-        conditionals: true,
-        negate_iife: true,
-        reduce_vars: true,
         side_effects: true,
-        toplevel: true,
         unused: true,
     }
     input: {
         function f() {
-            a--;
+            const a = 1;
-            try {
+            a = 2;
-                a++;
+            return a;
-            } catch(a) {
-                if (a) var a;
-                var a = 10;
         }
-        }
+        console.log(f());
-        f();
     }
     expect: {
-        !function() {
+        function f() {
-            a--;
+            const a = 1;
-            try {
+            return a = 2, a;
-                a++;
-            } catch(a) {
-                var a;
         }
-        }();
+        console.log(f());
     }
+    expect_stdout: true
 }

test/compress/evaluate.js

@@ -644,19 +644,17 @@ unsafe_prototype_function: {
 call_args: {
     options = {
         evaluate: true,
-        inline: true,
         reduce_vars: true,
-        toplevel: true,
     }
     input: {
-        var a = 1;
+        const a = 1;
         console.log(a);
         +function(a) {
             return a;
         }(a);
     }
     expect: {
-        var a = 1;
+        const a = 1;
         console.log(1);
         +(1, 1);
     }
@@ -666,20 +664,19 @@ call_args: {
 call_args_drop_param: {
     options = {
         evaluate: true,
-        inline: true,
         keep_fargs: false,
         reduce_vars: true,
-        toplevel: true,
         unused: true,
     }
     input: {
-        var a = 1;
+        const a = 1;
         console.log(a);
         +function(a) {
             return a;
         }(a, b);
     }
     expect: {
+        const a = 1;
         console.log(1);
         +(b, 1);
     }
@@ -782,15 +779,13 @@ unsafe_charAt_noop: {
     input: {
         console.log(
             s.charAt(0),
-            "string".charAt(x),
+            "string".charAt(x)
-            (typeof x).charAt()
         );
     }
     expect: {
         console.log(
             s.charAt(0),
-            "string".charAt(x),
+            "string".charAt(x)
-            (typeof x)[0]
         );
     }
 }
@@ -927,12 +922,12 @@ delete_binary_1: {
         console.log(delete (true && (0 / 0)));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }
@@ -953,12 +948,12 @@ delete_binary_2: {
         console.log(delete (false || (0 / 0)));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((Infinity, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }
@@ -994,78 +989,3 @@ Infinity_NaN_undefined_LHS: {
         "}",
     ]
 }
-
-issue_1964_1: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unsafe_regexp: false,
-        unused: true,
-    }
-    input: {
-        function f() {
-            var long_variable_name = /\s/;
-            return "a b c".split(long_variable_name)[1];
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            var long_variable_name = /\s/;
-            return "a b c".split(long_variable_name)[1];
-        }
-        console.log(f());
-    }
-    expect_stdout: "b"
-}
-
-issue_1964_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unsafe_regexp: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            var long_variable_name = /\s/;
-            return "a b c".split(long_variable_name)[1];
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            return "a b c".split(/\s/)[1];
-        }
-        console.log(f());
-    }
-    expect_stdout: "b"
-}
-
-array_slice_index: {
-    options = {
-        evaluate: true,
-        unsafe: true,
-    }
-    input: {
-        console.log([1,2,3].slice(1)[1]);
-    }
-    expect: {
-        console.log(3);
-    }
-    expect_stdout: "3"
-}
-
-string_charCodeAt: {
-    options = {
-        evaluate: true,
-        unsafe: true,
-    }
-    input: {
-        console.log("foo".charCodeAt("bar".length));
-    }
-    expect: {
-        console.log(NaN);
-    }
-    expect_stdout: "NaN"
-}

test/compress/functions.js

@@ -21,7 +21,6 @@ iifes_returning_constants_keep_fargs_true: {
         join_vars     : true,
         reduce_vars   : true,
         cascade       : true,
-        inline        : true,
     }
     input: {
         (function(){ return -1.23; }());
@@ -57,7 +56,6 @@ iifes_returning_constants_keep_fargs_false: {
         join_vars     : true,
         reduce_vars   : true,
         cascade       : true,
-        inline        : true,
     }
     input: {
         (function(){ return -1.23; }());
@@ -84,7 +82,6 @@ issue_485_crashing_1530: {
         conditionals: true,
         dead_code: true,
         evaluate: true,
-        inline: true,
     }
     input: {
         (function(a) {
@@ -115,8 +112,9 @@ issue_1841_1: {
     expect: {
         var b = 10;
         !function() {
-            for (var key in "hi")
+            for (var key in "hi") {
                 b = 42;
+            }
         }(--b);
         console.log(b);
     }
@@ -141,198 +139,11 @@ issue_1841_2: {
     expect: {
         var b = 10;
         !function(arg) {
-            for (var key in "hi")
+            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("a", "b", "b.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"
-}

test/compress/global_defs.js

@@ -120,7 +120,7 @@ mixed: {
         properties: true,
     }
     input: {
-        var FOO = { BAR: 0 };
+        const FOO = { BAR: 0 };
         console.log(FOO.BAR);
         console.log(++CONFIG.DEBUG);
         console.log(++CONFIG.VALUE);
@@ -130,7 +130,7 @@ mixed: {
         console.log(CONFIG);
     }
     expect: {
-        var FOO = { BAR: 0 };
+        const FOO = { BAR: 0 };
         console.log("moo");
         console.log(++CONFIG.DEBUG);
         console.log(++CONFIG.VALUE);
@@ -160,17 +160,3 @@ issue_1801: {
         console.log(!0);
     }
 }
-
-issue_1986: {
-    options = {
-        global_defs: {
-            "@alert": "console.log",
-        },
-    }
-    input: {
-        alert(42);
-    }
-    expect: {
-        console.log(42);
-    }
-}

test/compress/if_return.js

@@ -302,27 +302,3 @@ issue_1437_conditionals: {
         }
     }
 }
-
-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

@@ -116,137 +116,3 @@ non_hoisted_function_after_return_2b: {
         "WARN: Dropping unreachable code [test/compress/issue-1034.js:101,12]",
     ]
 }
-
-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:131,16]',
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:134,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:137,12]",
-        "WARN: Dropping unused function UnusedFunction [test/compress/issue-1034.js:138,21]"
-    ]
-}
-
-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:173,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:173,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:176,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:176,16]",
-        "WARN: Dropping unused variable a [test/compress/issue-1034.js:173,20]",
-        "WARN: Dropping unused function nope [test/compress/issue-1034.js:180,21]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:178,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:178,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:181,12]",
-        "WARN: Dropping unused variable b [test/compress/issue-1034.js:176,20]",
-        "WARN: Dropping unused variable c [test/compress/issue-1034.js:178,16]",
-    ]
-}
-
-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:225,16]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:225,16]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:227,12]",
-        "WARN: Declarations in unreachable code! [test/compress/issue-1034.js:227,12]",
-        "WARN: Dropping unreachable code [test/compress/issue-1034.js:231,12]",
-    ]
-}

test/compress/issue-1041.js

@@ -1,3 +1,16 @@
+const_declaration: {
+    options = {
+        evaluate: true
+    };
+
+    input: {
+        const goog = goog || {};
+    }
+    expect: {
+        const goog = goog || {};
+    }
+}
+
 const_pragma: {
     options = {
         evaluate: true,

test/compress/issue-1052.js

@@ -1,91 +1,90 @@
 multiple_functions: {
-    options = {
+    options = { if_return: true, hoist_funs: false };
-        hoist_funs: false,
-        if_return: true,
-    }
     input: {
         ( function() {
             if ( !window ) {
                 return;
             }
+
             function f() {}
             function g() {}
         } )();
     }
     expect: {
         ( function() {
+            function f() {}
+            function g() {}
+
             // NOTE: other compression steps will reduce this
             // down to just `window`.
             if ( window );
-            function f() {}
-            function g() {}
         } )();
     }
 }
 
 single_function: {
-    options = {
+    options = { if_return: true, hoist_funs: false };
-        hoist_funs: false,
-        if_return: true,
-    }
     input: {
         ( function() {
             if ( !window ) {
                 return;
             }
+
             function f() {}
         } )();
     }
     expect: {
         ( function() {
-            if ( window );
             function f() {}
+
+            if ( window );
         } )();
     }
 }
 
 deeply_nested: {
-    options = {
+    options = { if_return: true, hoist_funs: false };
-        hoist_funs: false,
-        if_return: true,
-    }
     input: {
         ( function() {
             if ( !window ) {
                 return;
             }
+
             function f() {}
             function g() {}
+
             if ( !document ) {
                 return;
             }
+
             function h() {}
         } )();
     }
     expect: {
         ( function() {
+            function f() {}
+            function g() {}
+
+            function h() {}
+
             // 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 = {
+    options = { if_return: true, hoist_funs: false };
-        hoist_funs: false,
-        if_return: true,
-    }
     input: {
         ( function() {
             if ( !window ) {
                 return;
             }
+
             if ( foo ) function f() {}
+
         } )();
     }
     expect: {
@@ -95,70 +94,3 @@ not_hoisted_when_already_nested: {
         } )();
     }
 }
-
-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-1321.js

@@ -1,6 +1,6 @@
 issue_1321_no_debug: {
     mangle_props = {
-        keep_quoted: true
+        ignore_quoted: true
     }
     input: {
         var x = {};
@@ -19,7 +19,7 @@ issue_1321_no_debug: {
 
 issue_1321_debug: {
     mangle_props = {
-        keep_quoted: true,
+        ignore_quoted: true,
         debug: ""
     }
     input: {
@@ -39,7 +39,7 @@ issue_1321_debug: {
 
 issue_1321_with_quoted: {
     mangle_props = {
-        keep_quoted: false
+        ignore_quoted: false
     }
     input: {
         var x = {};

test/compress/issue-1446.js

@@ -23,7 +23,7 @@ typeof_eq_undefined: {
 typeof_eq_undefined_ie8: {
     options = {
         comparisons: true,
-        ie8: true,
+        screw_ie8: false
     }
     input: {
         var a = typeof b != "undefined";

test/compress/issue-1588.js

@@ -1,9 +1,9 @@
 screw_ie8: {
     options = {
-        ie8: false,
+        screw_ie8: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         try { throw "foo"; } catch (x) { console.log(x); }
@@ -16,10 +16,10 @@ screw_ie8: {
 
 support_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         try { throw "foo"; } catch (x) { console.log(x); }
@@ -85,3 +85,15 @@ unsafe_undefined: {
     }
     expect_stdout: true
 }
+
+runtime_error: {
+    input: {
+        const a = 1;
+        console.log(a++);
+    }
+    expect: {
+        const a = 1;
+        console.log(a++);
+    }
+    expect_stdout: true
+}

test/compress/issue-1609.js

@@ -18,7 +18,9 @@ chained_evaluation_1: {
     expect: {
         (function() {
             (function() {
-                f(1).bar = 1;
+                var c;
+                c = f(1);
+                c.bar = 1;
             })();
         })();
     }
@@ -44,8 +46,9 @@ chained_evaluation_2: {
     expect: {
         (function() {
             (function() {
-                var b = "long piece of string";
+                var c, b = "long piece of string";
-                f(b).bar = b;
+                c = f(b);
+                c.bar = b;
             })();
         })();
     }

test/compress/issue-1704.js

@@ -1,10 +1,10 @@
 mangle_catch: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     input: {
@@ -22,11 +22,11 @@ mangle_catch: {
 
 mangle_catch_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     input: {
@@ -44,11 +44,11 @@ mangle_catch_ie8: {
 
 mangle_catch_var: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     input: {
@@ -66,11 +66,11 @@ mangle_catch_var: {
 
 mangle_catch_var_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     input: {
@@ -88,11 +88,11 @@ mangle_catch_var_ie8: {
 
 mangle_catch_toplevel: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     input: {
@@ -110,11 +110,11 @@ mangle_catch_toplevel: {
 
 mangle_catch_ie8_toplevel: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     input: {
@@ -132,11 +132,11 @@ mangle_catch_ie8_toplevel: {
 
 mangle_catch_var_toplevel: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     input: {
@@ -154,11 +154,11 @@ mangle_catch_var_toplevel: {
 
 mangle_catch_var_ie8_toplevel: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     input: {
@@ -176,11 +176,11 @@ mangle_catch_var_ie8_toplevel: {
 
 mangle_catch_redef_1: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     input: {
@@ -198,11 +198,11 @@ mangle_catch_redef_1: {
 
 mangle_catch_redef_1_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     input: {
@@ -220,11 +220,11 @@ mangle_catch_redef_1_ie8: {
 
 mangle_catch_redef_1_toplevel: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     input: {
@@ -242,11 +242,11 @@ mangle_catch_redef_1_toplevel: {
 
 mangle_catch_redef_1_ie8_toplevel: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     input: {
@@ -264,11 +264,11 @@ mangle_catch_redef_1_ie8_toplevel: {
 
 mangle_catch_redef_2: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: false,
     }
     input: {
@@ -285,11 +285,11 @@ mangle_catch_redef_2: {
 
 mangle_catch_redef_2_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: false,
     }
     input: {
@@ -306,11 +306,11 @@ mangle_catch_redef_2_ie8: {
 
 mangle_catch_redef_2_toplevel: {
     options = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
         toplevel: true,
     }
     input: {
@@ -327,11 +327,11 @@ mangle_catch_redef_2_toplevel: {
 
 mangle_catch_redef_2_ie8_toplevel: {
     options = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
         toplevel: true,
     }
     input: {

test/compress/issue-1733.js

@@ -1,6 +1,6 @@
 function_iife_catch: {
     mangle = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         function f(n) {
@@ -21,7 +21,7 @@ function_iife_catch: {
 
 function_iife_catch_ie8: {
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         function f(n) {
@@ -42,7 +42,7 @@ function_iife_catch_ie8: {
 
 function_catch_catch: {
     mangle = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var o = 0;
@@ -70,7 +70,7 @@ function_catch_catch: {
 
 function_catch_catch_ie8: {
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var o = 0;

test/compress/issue-1787.js

@@ -1,7 +1,6 @@
 unary_prefix: {
     options = {
         evaluate: true,
-        inline: true,
         reduce_vars: true,
         unused: true,
     }
@@ -11,6 +10,10 @@ unary_prefix: {
             return x;
         }());
     }
-    expect_exact: "console.log(-2/3);"
+    expect: {
+        console.log(function() {
+            return -2 / 3;
+        }());
+    }
     expect_stdout: true
 }

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

@@ -38,7 +38,7 @@ mixed: {
         }
     }
     input: {
-        var ENV = 3;
+        const ENV = 3;
         var FOO = 4;
         f(ENV * 10);
         --FOO;
@@ -49,7 +49,7 @@ mixed: {
         x = DEBUG;
     }
     expect: {
-        var ENV = 3;
+        const ENV = 3;
         var FOO = 4;
         f(10);
         --FOO;
@@ -60,7 +60,7 @@ mixed: {
         x = 0;
     }
     expect_warnings: [
-        'WARN: global_defs ENV redefined [test/compress/issue-208.js:41,12]',
+        'WARN: global_defs ENV redefined [test/compress/issue-208.js:41,14]',
         '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]',

test/compress/issue-281.js

@@ -1,483 +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: {
-    options = {
-        inline: true,
-        side_effects: true,
-    }
-    input: {
-        /*@__PURE__*/(function() {
-            console.log("hello");
-        }());
-    }
-    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;
-        !function() {
-            a++;
-        }(++a && a.var);
-        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;
-        !function(a_1) {
-            a++;
-        }(++a && a.var);
-        console.log(a);
-    }
-    expect_stdout: "3"
-}

test/compress/issue-640.js

@@ -159,7 +159,7 @@ negate_iife_4: {
         })();
     }
     expect: {
-        !function(){ return t }() ? console.log(false) : console.log(true), function(){
+        (function(){ return t })() ? console.log(true) : console.log(false), function(){
             console.log("something");
         }();
     }
@@ -183,7 +183,7 @@ negate_iife_5: {
         })();
     }
     expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
+        (function(){ return t })() ? foo(true) : bar(false), function(){
             console.log("something");
         }();
     }
@@ -207,7 +207,7 @@ negate_iife_5_off: {
         })();
     }
     expect: {
-        !function(){ return t }() ? bar(false) : foo(true), function(){
+        (function(){ return t })() ? foo(true) : bar(false), function(){
             console.log("something");
         }();
     }

test/compress/loops.js

@@ -146,6 +146,50 @@ parse_do_while_without_semicolon: {
     }
 }
 
+
+keep_collapse_const_in_own_block_scope: {
+    options = {
+        join_vars: true,
+        loops: true
+    }
+    input: {
+        var i=2;
+        const c=5;
+        while(i--)
+            console.log(i);
+        console.log(c);
+    }
+    expect: {
+        var i=2;
+        const c=5;
+        for(;i--;)
+            console.log(i);
+        console.log(c);
+    }
+    expect_stdout: true
+}
+
+keep_collapse_const_in_own_block_scope_2: {
+    options = {
+        join_vars: true,
+        loops: true
+    }
+    input: {
+        const c=5;
+        var i=2; // Moves to loop, while it did not in previous test
+        while(i--)
+            console.log(i);
+        console.log(c);
+    }
+    expect: {
+        const c=5;
+        for(var i=2;i--;)
+            console.log(i);
+        console.log(c);
+    }
+    expect_stdout: true
+}
+
 evaluate: {
     options = {
         loops: true,
@@ -201,7 +245,7 @@ issue_1532: {
 issue_186: {
     beautify = {
         beautify: false,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -220,7 +264,7 @@ issue_186: {
 issue_186_ie8: {
     beautify = {
         beautify: false,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -239,7 +283,7 @@ issue_186_ie8: {
 issue_186_beautify: {
     beautify = {
         beautify: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -266,7 +310,7 @@ issue_186_beautify: {
 issue_186_beautify_ie8: {
     beautify = {
         beautify: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -296,7 +340,7 @@ issue_186_bracketize: {
     beautify = {
         beautify: false,
         bracketize: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -316,7 +360,7 @@ issue_186_bracketize_ie8: {
     beautify = {
         beautify: false,
         bracketize: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -336,7 +380,7 @@ issue_186_beautify_bracketize: {
     beautify = {
         beautify: true,
         bracketize: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -368,7 +412,7 @@ issue_186_beautify_bracketize_ie8: {
     beautify = {
         beautify: true,
         bracketize: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;

test/compress/negate-iife.js

@@ -22,25 +22,27 @@ negate_iife_1_off: {
 
 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; // should not transform this one
+    }
+    expect: {
         (function(){ return {} })().x = 10;
     }
-    expect_exact: "({}).x=10;"
 }
 
 negate_iife_3: {
@@ -60,7 +62,6 @@ negate_iife_3_evaluate: {
     options = {
         conditionals: true,
         evaluate: true,
-        inline: true,
         negate_iife: true,
     }
     input: {
@@ -103,7 +104,6 @@ negate_iife_3_off_evaluate: {
     options = {
         conditionals: true,
         evaluate: true,
-        inline: true,
         negate_iife: false,
     }
     input: {

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/properties.js

@@ -13,7 +13,7 @@ keep_properties: {
 dot_properties: {
     options = {
         properties: true,
-        ie8: true,
+        screw_ie8: false
     };
     input: {
         a["foo"] = "bar";
@@ -36,7 +36,7 @@ dot_properties: {
 dot_properties_es5: {
     options = {
         properties: true,
-        ie8: false,
+        screw_ie8: true
     };
     input: {
         a["foo"] = "bar";
@@ -125,7 +125,7 @@ evaluate_string_length: {
 
 mangle_properties: {
     mangle_props = {
-        keep_quoted: false
+        ignore_quoted: false
     };
     input: {
         a["foo"] = "bar";
@@ -148,7 +148,7 @@ mangle_unquoted_properties: {
         properties: false
     }
     mangle_props = {
-        keep_quoted: true
+        ignore_quoted: true
     }
     beautify = {
         beautify: false,
@@ -233,12 +233,12 @@ mangle_debug_suffix: {
     }
 }
 
-mangle_debug_suffix_keep_quoted: {
+mangle_debug_suffix_ignore_quoted: {
     options = {
         properties: false
     }
     mangle_props = {
-        keep_quoted: true,
+        ignore_quoted: true,
         debug: "XYZ",
         reserved: []
     }
@@ -555,105 +555,3 @@ native_prototype: {
         "".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"
-}

test/compress/pure_getters.js

@@ -119,62 +119,3 @@ chained: {
         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: {}
-}

test/compress/reduce_vars.js

@@ -2,7 +2,6 @@ reduce_vars: {
     options = {
         conditionals  : true,
         evaluate      : true,
-        inline        : true,
         global_defs   : {
             C : 0
         },
@@ -54,7 +53,9 @@ reduce_vars: {
             console.log(a - 5);
             eval("console.log(a);");
         })(eval);
-        "yes";
+        (function() {
+            return "yes";
+        })();
         console.log(A + 1);
     }
     expect_stdout: true
@@ -65,7 +66,7 @@ modified: {
         conditionals  : true,
         evaluate      : true,
         reduce_vars   : true,
-        unused        : true,
+        unused        : true
     }
     input: {
         function f0() {
@@ -135,11 +136,12 @@ modified: {
         }
 
         function f2() {
-            3;
+            var b = 2;
+            b = 3;
+            console.log(1 + b);
+            console.log(b + 3);
             console.log(4);
-            console.log(6);
+            console.log(1 + b + 3);
-            console.log(4);
-            console.log(7);
         }
 
         function f3() {
@@ -388,11 +390,12 @@ passes: {
     }
     expect: {
         function f() {
-            3;
+            var b = 2;
+            b = 3;
+            console.log(1 + b);
+            console.log(b + 3);
             console.log(4);
-            console.log(6);
+            console.log(1 + b + 3);
-            console.log(4);
-            console.log(7);
         }
     }
 }
@@ -585,7 +588,7 @@ inner_var_label: {
     }
 }
 
-inner_var_for_1: {
+inner_var_for: {
     options = {
         evaluate: true,
         reduce_vars: true,
@@ -614,29 +617,6 @@ inner_var_for_1: {
     }
 }
 
-inner_var_for_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = 1;
-            for (var b = 1; --b;) var a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            a = 1;
-            for (var b = 1; --b;) var a = 2;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "1"
-}
-
 inner_var_for_in_1: {
     options = {
         evaluate: true,
@@ -1033,7 +1013,6 @@ defun_inline_2: {
 defun_inline_3: {
     options = {
         evaluate: true,
-        inline: true,
         passes: 2,
         reduce_vars: true,
         side_effects: true,
@@ -1056,7 +1035,6 @@ defun_inline_3: {
 
 defun_call: {
     options = {
-        inline: true,
         reduce_vars: true,
         unused: true,
     }
@@ -1083,7 +1061,6 @@ defun_call: {
 
 defun_redefine: {
     options = {
-        inline: true,
         reduce_vars: true,
         unused: true,
     }
@@ -1116,7 +1093,6 @@ defun_redefine: {
 
 func_inline: {
     options = {
-        inline: true,
         reduce_vars: true,
         unused: true,
     }
@@ -1143,7 +1119,6 @@ func_inline: {
 
 func_modified: {
     options = {
-        inline: true,
         reduce_vars: true,
         unused: true,
     }
@@ -1317,47 +1292,19 @@ iife_func_side_effects: {
         unused: true,
     }
     input: {
-        function x() {
-            console.log("x");
-        }
-        function y() {
-            console.log("y");
-        }
-        function z() {
-            console.log("z");
-        }
         (function(a, b, c) {
-            function y() {
+            return b();
-                console.log("FAIL");
-            }
-            return y + b();
         })(x(), function() {
             return y();
         }, z());
     }
     expect: {
-        function x() {
-            console.log("x");
-        }
-        function y() {
-            console.log("y");
-        }
-        function z() {
-            console.log("z");
-        }
         (function(a, b, c) {
             return function() {
-                console.log("FAIL");
-            } + b();
-        })(x(), function() {
                 return y();
-        }, z());
+            }();
+        })(x(), 0, z());
     }
-    expect_stdout: [
-        "x",
-        "z",
-        "y",
-    ]
 }
 
 issue_1595_1: {
@@ -1721,7 +1668,6 @@ redefine_arguments_1: {
 redefine_arguments_2: {
     options = {
         evaluate: true,
-        inline: true,
         keep_fargs: false,
         reduce_vars: true,
         side_effects: true,
@@ -1747,7 +1693,9 @@ redefine_arguments_2: {
         console.log(function() {
             var arguments;
             return typeof arguments;
-        }(), "number", function(x) {
+        }(), function() {
+            return"number";
+        }(), function(x) {
             var arguments = x;
             return typeof arguments;
         }());
@@ -1758,7 +1706,6 @@ redefine_arguments_2: {
 redefine_arguments_3: {
     options = {
         evaluate: true,
-        inline: true,
         keep_fargs: false,
         passes: 3,
         reduce_vars: true,
@@ -1835,7 +1782,6 @@ redefine_farg_1: {
 redefine_farg_2: {
     options = {
         evaluate: true,
-        inline: true,
         keep_fargs: false,
         reduce_vars: true,
         side_effects: true,
@@ -1861,7 +1807,9 @@ redefine_farg_2: {
         console.log(function(a) {
             var a;
             return typeof a;
-        }([]), "number",function(a, b) {
+        }([]), function() {
+            return "number";
+        }(),function(a, b) {
             var a = b;
             return typeof a;
         }([]));
@@ -1872,7 +1820,6 @@ redefine_farg_2: {
 redefine_farg_3: {
     options = {
         evaluate: true,
-        inline: true,
         keep_fargs: false,
         passes: 3,
         reduce_vars: true,
@@ -1899,7 +1846,10 @@ redefine_farg_3: {
         console.log(function(a) {
             var a;
             return typeof a;
-        }([]), "number", "undefined");
+        }([]), "number", function(a) {
+            var a = void 0;
+            return typeof a;
+        }([]));
     }
     expect_stdout: "object number undefined"
 }
@@ -2019,6 +1969,7 @@ pure_getters_2: {
         var a = a && a.b;
     }
     expect: {
+        var a;
         var a = a && a.b;
     }
 }
@@ -2063,176 +2014,14 @@ catch_var: {
     expect_stdout: "true"
 }
 
-var_assign_1: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            console.log(2);
-        }();
-    }
-    expect_stdout: "2"
-}
-
-var_assign_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            if (a = 2) console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            if (2) console.log(2);
-        }();
-    }
-    expect_stdout: "2"
-}
-
-var_assign_3: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            while (a = 2);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            while (a = 2);
-            console.log(a);
-        }();
-    }
-}
-
-var_assign_4: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function a() {
-            a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function a() {
-            a = 2,
-            console.log(a);
-        }();
-    }
-}
-
-var_assign_5: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            !function(b) {
-                a = 2;
-                console.log(a, b);
-            }(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            !function(b) {
-                a = 2,
-                console.log(a, b);
-            }(a);
-        }();
-    }
-    expect_stdout: "2 undefined"
-}
-
-var_assign_6: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = function(){}(a = 1);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = function(){}(a = 1);
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-immutable: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = "test";
-            console.log(a.indexOf("e"));
-        }();
-    }
-    expect: {
-        !function() {
-            console.log("test".indexOf("e"));
-        }();
-    }
-    expect_stdout: "1"
-}
-
 issue_1814_1: {
     options = {
         evaluate: true,
         reduce_vars: true,
-        toplevel: true,
         unused: true,
     }
     input: {
-        var a = 42;
+        const a = 42;
         !function() {
             var b = a;
             !function(a) {
@@ -2241,6 +2030,7 @@ issue_1814_1: {
         }();
     }
     expect: {
+        const a = 42;
         !function() {
             !function(a) {
                 console.log(a++, 42);
@@ -2254,11 +2044,10 @@ issue_1814_2: {
     options = {
         evaluate: true,
         reduce_vars: true,
-        toplevel: true,
         unused: true,
     }
     input: {
-        var a = "32";
+        const a = "32";
         !function() {
             var b = a + 1;
             !function(a) {
@@ -2267,6 +2056,7 @@ issue_1814_2: {
         }();
     }
     expect: {
+        const a = "32";
         !function() {
             !function(a) {
                 console.log(a++, "321");
@@ -2307,173 +2097,6 @@ try_abort: {
     expect_stdout: "1 undefined"
 }
 
-boolean_binary_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            void 0 && (a = 1);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            void 0;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-cond_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            void 0 ? (a = 1) : 0;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            void 0 ? (a = 1) : 0;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-iife_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = 1, b = 0;
-            !function() {
-                b++;
-                return;
-                a = 2;
-            }();
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = 1, b = 0;
-            !function() {
-                b++;
-                return;
-                a = 2;
-            }();
-            console.log(a);
-        }();
-    }
-    expect_stdout: "1"
-}
-
-issue_1850_1: {
-    options = {
-        reduce_vars: true,
-        toplevel: false,
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect_stdout: true
-}
-
-issue_1850_2: {
-    options = {
-        reduce_vars: true,
-        toplevel: "funcs",
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        var a = 1;
-        (function() {
-            console.log(a, a, a);
-        })();
-    }
-    expect_stdout: true
-}
-
-issue_1850_3: {
-    options = {
-        reduce_vars: true,
-        toplevel: "vars",
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect_stdout: true
-}
-
-issue_1850_4: {
-    options = {
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        var a = 1;
-        (function() {
-            console.log(a, a, a);
-        })();
-    }
-    expect_stdout: true
-}
-
 issue_1865: {
     options = {
         evaluate: true,
@@ -2546,32 +2169,3 @@ issue_1922_2: {
     }
     expect_stdout: "1"
 }
-
-accessor: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var a = 1;
-        console.log({
-            get a() {
-                a = 2;
-                return a;
-            },
-            b: 1
-        }.b, a);
-    }
-    expect: {
-        var a = 1;
-        console.log({
-            get a() {
-                a = 2;
-                return a;
-            },
-            b: 1
-        }.b, a);
-    }
-    expect_stdout: "1 1"
-}

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

@@ -1,9 +1,9 @@
 do_screw: {
     options = {
-        ie8: false,
+        screw_ie8: true,
     }
     beautify = {
-        ie8: false,
+        screw_ie8: true,
         ascii_only: true,
     }
     input: {
@@ -14,10 +14,10 @@ do_screw: {
 
 dont_screw: {
     options = {
-        ie8: true,
+        screw_ie8: false,
     }
     beautify = {
-        ie8: true,
+        screw_ie8: false,
         ascii_only: true,
     }
     input: {
@@ -28,7 +28,7 @@ dont_screw: {
 
 do_screw_constants: {
     options = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         f(undefined, Infinity);
@@ -38,7 +38,7 @@ do_screw_constants: {
 
 dont_screw_constants: {
     options = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         f(undefined, Infinity);
@@ -47,15 +47,9 @@ dont_screw_constants: {
 }
 
 do_screw_try_catch: {
-    options = {
+    options = { screw_ie8: true };
-        ie8: false,
+    mangle = { screw_ie8: true };
-    }
+    beautify = { screw_ie8: true };
-    mangle = {
-        ie8: false,
-    }
-    beautify = {
-        ie8: false,
-    }
     input: {
         good = function(e){
             return function(error){
@@ -81,15 +75,9 @@ do_screw_try_catch: {
 }
 
 dont_screw_try_catch: {
-    options = {
+    options = { screw_ie8: false };
-        ie8: true,
+    mangle = { screw_ie8: false };
-    }
+    beautify = { screw_ie8: false };
-    mangle = {
-        ie8: true,
-    }
-    beautify = {
-        ie8: true,
-    }
     input: {
         bad = function(e){
             return function(error){
@@ -115,15 +103,9 @@ dont_screw_try_catch: {
 }
 
 do_screw_try_catch_undefined: {
-    options = {
+    options = { screw_ie8: true };
-        ie8: false,
+    mangle = { screw_ie8: true };
-    }
+    beautify = { screw_ie8: true };
-    mangle = {
-        ie8: false,
-    }
-    beautify = {
-        ie8: false,
-    }
     input: {
         function a(b){
             try {
@@ -150,15 +132,9 @@ do_screw_try_catch_undefined: {
 }
 
 dont_screw_try_catch_undefined: {
-    options = {
+    options = { screw_ie8: false };
-        ie8: true,
+    mangle = { screw_ie8: false };
-    }
+    beautify = { screw_ie8: false };
-    mangle = {
-        ie8: true,
-    }
-    beautify = {
-        ie8: true,
-    }
     input: {
         function a(b){
             try {
@@ -188,11 +164,11 @@ reduce_vars: {
     options = {
         evaluate: true,
         reduce_vars: true,
-        ie8: true,
+        screw_ie8: false,
         unused: true,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         function f() {
@@ -220,10 +196,10 @@ reduce_vars: {
 
 issue_1586_1: {
     options = {
-        ie8: true,
+        screw_ie8: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         function f() {
@@ -239,10 +215,10 @@ issue_1586_1: {
 
 issue_1586_2: {
     options = {
-        ie8: false,
+        screw_ie8: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         function f() {

test/compress/sequences.js

@@ -460,7 +460,7 @@ issue_1758: {
         console.log(function(c) {
             var undefined = 42;
             return function() {
-                return c--, c--, void c.toString();
+                return c--, c--, c.toString(), void 0;
             }();
         }());
     }
@@ -481,12 +481,12 @@ delete_seq_1: {
         console.log(delete (1, 0 / 0));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -505,12 +505,12 @@ delete_seq_2: {
         console.log(delete (1, 2, 0 / 0));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -530,12 +530,12 @@ delete_seq_3: {
         console.log(delete (1, 2, 0 / 0));
     }
     expect: {
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((void 0, !0));
-        console.log(!0);
+        console.log((Infinity, !0));
-        console.log(!0);
+        console.log((1 / 0, !0));
-        console.log(!0);
+        console.log((NaN, !0));
-        console.log(!0);
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -606,127 +606,31 @@ delete_seq_6: {
     }
     expect: {
         var a;
-        console.log(!0);
+        console.log((a, !0));
     }
     expect_stdout: true
 }
 
-side_effects: {
+reassign_const: {
     options = {
+        cascade: true,
         sequences: true,
         side_effects: true,
     }
     input: {
-        0, a(), 1, b(), 2, c(), 3;
+        function f() {
+            const a = 1;
+            a++;
+            return a;
+        }
+        console.log(f());
     }
     expect: {
-        a(), b(), c();
+        function f() {
+            const a = 1;
+            return a++, a;
         }
+        console.log(f());
     }
-
+    expect_stdout: true
-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"
 }

test/compress/string-literal.js

@@ -8,12 +8,3 @@ octal_escape_sequence: {
         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/exports.js

@@ -1,13 +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["string_template"] = string_template;
-exports["tokenizer"] = tokenizer;
-exports["is_identifier"] = is_identifier;

test/fetch.js

@@ -1,31 +0,0 @@
-var fs = require("fs");
-var path = require("path");
-
-try {
-    fs.mkdirSync("./tmp");
-} catch (e) {
-    if (e.code != "EEXIST") throw e;
-}
-
-function local(url) {
-    return path.join("./tmp", encodeURIComponent(url));
-}
-
-function read(url) {
-    return fs.createReadStream(local(url));
-}
-
-module.exports = function(url, callback) {
-    var result = read(url);
-    result.on("error", function(e) {
-        if (e.code != "ENOENT") return callback(e);
-        require(url.slice(0, url.indexOf(":"))).get(url, function(res) {
-            if (res.statusCode !== 200) return callback(res);
-            res.pipe(fs.createWriteStream(local(url)).on("close", function() {
-                callback(null, read(url));
-            }));
-        });
-    }).on("open", function() {
-        callback(null, result);
-    });
-};

test/input/invalid/assign_4.js

@@ -1 +0,0 @@
-++null

test/input/invalid/delete.js

@@ -1,14 +0,0 @@
-function f(x) {
-    delete 42;
-    delete (0, x);
-    delete null;
-    delete x;
-}
-
-function g(x) {
-    "use strict";
-    delete 42;
-    delete (0, x);
-    delete null;
-    delete x;
-}

test/input/invalid/dot_1.js

@@ -1 +0,0 @@
-a.=

test/input/invalid/dot_2.js

@@ -1 +0,0 @@
-%.a;

test/input/invalid/dot_3.js

@@ -1 +0,0 @@
-a./();

test/input/invalid/else.js

@@ -1 +0,0 @@
-if (0) else 1;

test/input/invalid/function_1.js

@@ -1,6 +0,0 @@
-function f(arguments) {
-}
-
-function g(arguments) {
-    "use strict";
-}

test/input/invalid/function_2.js

@@ -1,6 +0,0 @@
-function arguments() {
-}
-
-function eval() {
-    "use strict";
-}

test/input/invalid/function_3.js

@@ -1,6 +0,0 @@
-!function eval() {
-}();
-
-!function arguments() {
-    "use strict";
-}();

test/input/invalid/object.js

@@ -1 +0,0 @@
-console.log({%: 1});

test/input/invalid/return.js

@@ -1 +0,0 @@
-return 42;

test/input/invalid/try.js

@@ -1,8 +0,0 @@
-function f() {
-    try {} catch (eval) {}
-}
-
-function g() {
-    "use strict";
-    try {} catch (eval) {}
-}

test/input/invalid/var.js

@@ -1,8 +0,0 @@
-function f() {
-    var eval;
-}
-
-function g() {
-    "use strict";
-    var eval;
-}

test/input/issue-2082/sample.js

@@ -1 +0,0 @@
-console.log(x);

test/input/issue-2082/sample.js.map

@@ -1 +0,0 @@
-{"version": 3,"sources": ["index.js"],"mappings": ";"}

test/input/issue-505/input.js

@@ -1,5 +0,0 @@
-function test(callback) {
-    'aaaaaaaaaaaaaaaa';
-    callback(err, data);
-    callback(err, data);
-}

test/input/issue-505/output.js

@@ -1,5 +0,0 @@
-function test(a){
-"aaaaaaaaaaaaaaaa"
-;a(err,data),a(err,data)
-}
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIjAiXSwibmFtZXMiOlsidGVzdCIsImNhbGxiYWNrIiwiZXJyIiwiZGF0YSJdLCJtYXBwaW5ncyI6IkFBQUEsU0FBU0EsS0FBS0M7QUFDVjtDQUNBQSxFQUFTQyxJQUFLQyxNQUNkRixFQUFTQyxJQUFLQyJ9

test/input/issue-520/output.js

@@ -1,2 +1,2 @@
 new function(){console.log(3)};
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxJQUFyQyxXQUFnQkEsUUFBUUMsSUFBSSIsInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl19
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxHQUFyQyxZQUFnQkEsUUFBUUMsSUFBSSIsInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl19

test/jetstream.js

@@ -3,7 +3,7 @@
 
 "use strict";
 
-var site = "http://browserbench.org/JetStream";
+var site = "http://browserbench.org/JetStream/";
 if (typeof phantom == "undefined") {
     // workaround for tty output truncation upon process.exit()
     [process.stdout, process.stderr].forEach(function(stream){
@@ -11,38 +11,25 @@ if (typeof phantom == "undefined") {
             stream._handle.setBlocking(true);
     });
     var args = process.argv.slice(2);
-    var debug = args.indexOf("--debug");
-    if (debug >= 0) {
-        args.splice(debug, 1);
-        debug = true;
-    } else {
-        debug = false;
-    }
     if (!args.length) {
-        args.push("-mcb", "beautify=false,webkit");
+        args.push("-mc", "warnings=false");
     }
-    args.push("--timings");
+    args.push("--stats");
     var child_process = require("child_process");
-    var fetch = require("./fetch");
+    try {
+        require("phantomjs-prebuilt");
+    } catch(e) {
+        child_process.execSync("npm install phantomjs-prebuilt@2.1.14");
+    }
     var http = require("http");
     var server = http.createServer(function(request, response) {
         request.resume();
-        var url = site + request.url;
+        var url = decodeURIComponent(request.url.slice(1));
-        fetch(url, function(err, res) {
-            if (err) throw err;
-            response.writeHead(200, {
-                "Content-Type": {
-                    css: "text/css",
-                    js: "application/javascript",
-                    png: "image/png"
-                }[url.slice(url.lastIndexOf(".") + 1)] || "text/html; charset=utf-8"
-            });
-            if (/\.js$/.test(url)) {
         var stderr = "";
         var uglifyjs = child_process.fork("bin/uglifyjs", args, {
             silent: true
         }).on("exit", function(code) {
-                    console.log("uglifyjs", url.slice(site.length + 1), args.join(" "));
+            console.log("uglifyjs", url.indexOf(site) == 0 ? url.slice(site.length) : url, args.join(" "));
             console.log(stderr);
             if (code) throw new Error("uglifyjs failed with code " + code);
         });
@@ -50,31 +37,20 @@ if (typeof phantom == "undefined") {
             stderr += data;
         }).setEncoding("utf8");
         uglifyjs.stdout.pipe(response);
+        http.get(url, function(res) {
             res.pipe(uglifyjs.stdin);
-            } else {
-                res.pipe(response);
-            }
         });
-    }).listen();
+    }).listen().on("listening", function() {
-    server.on("listening", function() {
+        var phantomjs = require("phantomjs-prebuilt");
-        var port = server.address().port;
+        var program = phantomjs.exec(process.argv[1], server.address().port);
-        if (debug) {
-            console.log("http://localhost:" + port + "/");
-        } else {
-            child_process.exec("npm install phantomjs-prebuilt@2.1.14 --no-save", function(error) {
-                if (error) throw error;
-                var program = require("phantomjs-prebuilt").exec(process.argv[1], port);
         program.stdout.pipe(process.stdout);
         program.stderr.pipe(process.stderr);
         program.on("exit", function(code) {
             server.close();
             if (code) throw new Error("JetStream failed!");
             console.log("JetStream completed successfully.");
-                    process.exit(0);
         });
     });
-        }
-    });
     server.timeout = 0;
 } else {
     var page = require("webpage").create();
@@ -87,6 +63,10 @@ if (typeof phantom == "undefined") {
         phantom.exit(1);
     };
     var url = "http://localhost:" + require("system").args[1] + "/";
+    page.onResourceRequested = function(requestData, networkRequest) {
+        if (/\.js$/.test(requestData.url))
+            networkRequest.changeUrl(url + encodeURIComponent(requestData.url));
+    }
     page.onConsoleMessage = function(msg) {
         if (/Error:/i.test(msg)) {
             console.error(msg);
@@ -97,8 +77,8 @@ if (typeof phantom == "undefined") {
             phantom.exit();
         }
     };
-    page.open(url, function(status) {
+    page.open(site, function(status) {
-        if (status != "success") phantom.exit(1);
+        if (status != "success") phantomjs.exit(1);
         page.evaluate(function() {
             JetStream.switchToQuick();
             JetStream.start();

test/mocha/accessorTokens-1492.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("Accessor tokens", function() {
@@ -16,7 +16,7 @@ describe("Accessor tokens", function() {
                 assert.equal(node.start.pos, 12);
                 assert.equal(node.end.endpos, 46);
 
-                assert(node.key instanceof UglifyJS.AST_SymbolAccessor);
+                assert(node.key instanceof UglifyJS.AST_SymbolRef);
                 assert.equal(node.key.start.pos, 16);
                 assert.equal(node.key.end.endpos, 22);
 

test/mocha/arguments.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("arguments", function() {

test/mocha/cli.js

@@ -2,10 +2,6 @@ var assert = require("assert");
 var exec = require("child_process").exec;
 var readFileSync = require("fs").readFileSync;
 
-function read(path) {
-    return readFileSync(path, "utf8");
-}
-
 describe("bin/uglifyjs", function () {
     var uglifyjscmd = '"' + process.argv[0] + '" bin/uglifyjs';
     it("should produce a functional build when using --self", function (done) {
@@ -19,14 +15,12 @@ describe("bin/uglifyjs", function () {
             eval(stdout);
 
             assert.strictEqual(typeof WrappedUglifyJS, 'object');
-            var result = WrappedUglifyJS.minify("foo([true,,2+3]);");
+            assert.strictEqual(true, WrappedUglifyJS.parse('foo;') instanceof WrappedUglifyJS.AST_Node);
-            assert.strictEqual(result.error, undefined);
-            assert.strictEqual(result.code, "foo([!0,,5]);");
 
             done();
         });
     });
-    it("Should be able to filter comments correctly with `--comments all`", function (done) {
+    it("Should be able to filter comments correctly with `--comment all`", function (done) {
         var command = uglifyjscmd + ' test/input/comments/filter.js --comments all';
 
         exec(command, function (err, stdout) {
@@ -56,18 +50,18 @@ describe("bin/uglifyjs", function () {
             done();
         });
     });
-    it("Should append source map to output when using --source-map url=inline", function (done) {
+    it("Should append source map to output when using --source-map-inline", function (done) {
-        var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map url=inline";
+       var command = uglifyjscmd + ' test/input/issue-1323/sample.js --source-map-inline';
 
        exec(command, function (err, stdout) {
            if (err) throw err;
 
            assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n" +
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxJQUFJQSxJQUFNLFdBQ04sU0FBU0MsSUFBS0QsS0FDVixPQUFPQSxJQUdYLE9BQU9DIn0=\n");
+               "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=\n");
            done();
        });
     });
-    it("should not append source map to output when not using --source-map url=inline", function (done) {
+    it("should not append source map to output when not using --source-map-inline", function (done) {
         var command = uglifyjscmd + ' test/input/issue-1323/sample.js';
 
         exec(command, function (err, stdout) {
@@ -77,23 +71,6 @@ describe("bin/uglifyjs", function () {
             done();
         });
     });
-    it("should not consider source map file content as source map file name (issue #2082)", function (done) {
-        var command = [
-            uglifyjscmd,
-            "test/input/issue-2082/sample.js",
-            "--source-map", "content=test/input/issue-2082/sample.js.map",
-            "--source-map", "url=inline",
-        ].join(" ");
-
-        exec(command, function (err, stdout, stderr) {
-            if (err) throw err;
-
-            var stderrLines = stderr.split('\n');
-            assert.strictEqual(stderrLines[0], 'INFO: Using input source map: test/input/issue-2082/sample.js.map');
-            assert.notStrictEqual(stderrLines[1], 'INFO: Using input source map: {"version": 3,"sources": ["index.js"],"mappings": ";"}');
-            done();
-        });
-    });
     it("Should work with --keep-fnames (mangle only)", function (done) {
        var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m';
 
@@ -160,7 +137,7 @@ describe("bin/uglifyjs", function () {
        exec(command, function (err, stdout) {
            if (err) throw err;
 
-            assert.strictEqual(stdout, read("test/input/issue-1482/default.js"));
+           assert.strictEqual(stdout, readFileSync("test/input/issue-1482/default.js", "utf8"));
            done();
        });
     });
@@ -170,59 +147,55 @@ describe("bin/uglifyjs", function () {
        exec(command, function (err, stdout) {
            if (err) throw err;
 
-            assert.strictEqual(stdout, read("test/input/issue-1482/bracketize.js"));
+           assert.strictEqual(stdout, readFileSync("test/input/issue-1482/bracketize.js", "utf8"));
            done();
        });
     });
     it("Should process inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js -mc toplevel --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js -mc toplevel --in-source-map inline --source-map-inline';
 
         exec(command, function (err, stdout) {
             if (err) throw err;
 
-            assert.strictEqual(stdout, read("test/input/issue-520/output.js"));
+            assert.strictEqual(stdout, readFileSync("test/input/issue-520/output.js", "utf8"));
             done();
         });
     });
     it("Should warn for missing inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-1323/sample.js --in-source-map inline';
 
         exec(command, function (err, stdout, stderr) {
             if (err) throw err;
 
-            assert.strictEqual(stdout, [
+            assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n");
-                "var bar=function(){function foo(bar){return bar}return foo}();",
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxJQUFJQSxJQUFNLFdBQ04sU0FBU0MsSUFBS0QsS0FDVixPQUFPQSxJQUdYLE9BQU9DIn0=",
-                "",
-            ].join("\n"));
             assert.strictEqual(stderr, "WARN: inline source map not found\n");
             done();
         });
     });
     it("Should fail with multiple input and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js test/input/issue-520/output.js --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js test/input/issue-520/output.js --in-source-map inline --source-map-inline';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr.split(/\n/)[0], "ERROR: inline source map only works with singular input");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with singular input\n");
             done();
         });
     });
     it("Should fail with acorn and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p acorn";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js --in-source-map inline --source-map-inline --acorn';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with built-in parser\n");
             done();
         });
     });
     it("Should fail with SpiderMonkey and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p spidermonkey";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js --in-source-map inline --source-map-inline --spidermonkey';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with built-in parser\n");
             done();
         });
     });
@@ -235,7 +208,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/simple.js:1,12");
             assert.strictEqual(lines[1], "function f(a{}");
             assert.strictEqual(lines[2], "            ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token punc «{», expected punc «,»");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token punc «{», expected punc «,»");
             done();
         });
     });
@@ -248,7 +221,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/tab.js:1,12");
             assert.strictEqual(lines[1], "\t\tfoo(\txyz, 0abc);");
             assert.strictEqual(lines[2], "\t\t    \t     ^");
-            assert.strictEqual(lines[3], "ERROR: Invalid syntax: 0abc");
+            assert.strictEqual(lines[3], "SyntaxError: Invalid syntax: 0abc");
             done();
         });
     });
@@ -261,7 +234,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/eof.js:2,0");
             assert.strictEqual(lines[1], "foo, bar(");
             assert.strictEqual(lines[2], "         ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token: eof (undefined)");
             done();
         });
     });
@@ -274,7 +247,17 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/loop-no-body.js:2,0");
             assert.strictEqual(lines[1], "for (var i = 0; i < 1; i++) ");
             assert.strictEqual(lines[2], "                            ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token: eof (undefined)");
+            done();
+        });
+    });
+    it("Should support hyphen as shorthand", function(done) {
+       var command = uglifyjscmd + ' test/input/issue-1431/sample.js -m keep-fnames=true';
+
+       exec(command, function (err, stdout) {
+           if (err) throw err;
+
+           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
            done();
        });
     });
@@ -288,7 +271,7 @@ describe("bin/uglifyjs", function () {
                "Parse error at test/input/invalid/assign_1.js:1,18",
                "console.log(1 || 5--);",
                "                  ^",
-                "ERROR: Invalid use of -- operator"
+               "SyntaxError: Invalid use of -- operator"
            ].join("\n"));
            done();
        });
@@ -303,7 +286,7 @@ describe("bin/uglifyjs", function () {
                "Parse error at test/input/invalid/assign_2.js:1,32",
                "console.log(2 || (Math.random() /= 2));",
                "                                ^",
-                "ERROR: Invalid assignment"
+               "SyntaxError: Invalid assignment"
            ].join("\n"));
            done();
        });
@@ -315,272 +298,12 @@ describe("bin/uglifyjs", function () {
            assert.ok(err);
            assert.strictEqual(stdout, "");
            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/assign_3.js:1,17",
+               "Parse error at test/input/invalid/assign_3.js:1,18",
                "console.log(3 || ++this);",
                "                  ^",
-                "ERROR: Invalid use of ++ operator"
+               "SyntaxError: Invalid use of ++ operator"
            ].join("\n"));
            done();
        });
     });
-    it("Should throw syntax error (++null)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/assign_4.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/assign_4.js:1,0",
-                "++null",
-                "^",
-                "ERROR: Invalid use of ++ operator"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (a.=)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/dot_1.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/dot_1.js:1,2",
-                "a.=",
-                "  ^",
-                "ERROR: Unexpected token: operator (=)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (%.a)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/dot_2.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/dot_2.js:1,0",
-                "%.a;",
-                "^",
-                "ERROR: Unexpected token: operator (%)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (a./();)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/dot_3.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/dot_3.js:1,2",
-                "a./();",
-                "  ^",
-                "ERROR: Unexpected token: operator (/)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error ({%: 1})", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/object.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/object.js:1,13",
-                "console.log({%: 1});",
-                "             ^",
-                "ERROR: Unexpected token: operator (%)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (delete x)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/delete.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/delete.js:13,11",
-                "    delete x;",
-                "           ^",
-                "ERROR: Calling delete on expression not allowed in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (function g(arguments))", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/function_1.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/function_1.js:4,11",
-                "function g(arguments) {",
-                "           ^",
-                "ERROR: Unexpected arguments in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (function eval())", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/function_2.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/function_2.js:4,9",
-                "function eval() {",
-                "         ^",
-                "ERROR: Unexpected eval in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (iife arguments())", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/function_3.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/function_3.js:4,10",
-                "!function arguments() {",
-                "          ^",
-                "ERROR: Unexpected arguments in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (catch(eval))", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/try.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/try.js:7,18",
-                "    try {} catch (eval) {}",
-                "                  ^",
-                "ERROR: Unexpected eval in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (var eval)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/var.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/var.js:7,8",
-                "    var eval;",
-                "        ^",
-                "ERROR: Unexpected eval in strict mode"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (else)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/else.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/else.js:1,7",
-                "if (0) else 1;",
-                "       ^",
-                "ERROR: Unexpected token: keyword (else)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (return)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/return.js';
-
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-                "Parse error at test/input/invalid/return.js:1,0",
-                "return 42;",
-                "^",
-                "ERROR: 'return' outside of function"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should handle literal string as source map input", function(done) {
-        var command = [
-            uglifyjscmd,
-            "test/input/issue-1236/simple.js",
-            "--source-map",
-            'content="' + read_map() + '",url=inline'
-        ].join(" ");
-
-        exec(command, function (err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, [
-                '"use strict";var foo=function foo(x){return"foo "+x};console.log(foo("bar"));',
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImluZGV4LmpzIl0sIm5hbWVzIjpbImZvbyIsIngiLCJjb25zb2xlIiwibG9nIl0sIm1hcHBpbmdzIjoiYUFBQSxJQUFJQSxJQUFNLFNBQU5BLElBQU1DLEdBQUEsTUFBSyxPQUFTQSxHQUN4QkMsUUFBUUMsSUFBSUgsSUFBSSJ9",
-                ""
-            ].join("\n"));
-            done();
-        });
-
-        function read_map() {
-            var map = JSON.parse(read("./test/input/issue-1236/simple.js.map"));
-            delete map.sourcesContent;
-            return JSON.stringify(map).replace(/"/g, '\\"');
-        }
-    });
-    it("Should dump AST as JSON", function(done) {
-        var command = uglifyjscmd + " test/input/global_defs/simple.js -mco ast";
-        exec(command, function (err, stdout) {
-            if (err) throw err;
-
-            var ast = JSON.parse(stdout);
-            assert.strictEqual(ast._class, "AST_Toplevel");
-            assert.ok(Array.isArray(ast.body));
-            done();
-        });
-    });
-    it("Should print supported options on invalid option syntax", function(done) {
-        var command = uglifyjscmd + " test/input/comments/filter.js -b ascii-only";
-        exec(command, function (err, stdout, stderr) {
-            assert.ok(err);
-            assert.strictEqual(stdout, "");
-            assert.ok(/^Supported options:\n[\s\S]*?\nERROR: `ascii-only` is not a supported option/.test(stderr), stderr);
-            done();
-        });
-    });
-    it("Should work with --mangle reserved=[]", function (done) {
-        var command = uglifyjscmd + ' test/input/issue-505/input.js -m reserved=[callback]';
-
-        exec(command, function (err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, 'function test(callback){"aaaaaaaaaaaaaaaa";callback(err,data);callback(err,data)}\n');
-            done();
-        });
-    });
-    it("Should work with --mangle reserved=false", function (done) {
-        var command = uglifyjscmd + ' test/input/issue-505/input.js -m reserved=false';
-
-        exec(command, function (err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, 'function test(a){"aaaaaaaaaaaaaaaa";a(err,data);a(err,data)}\n');
-            done();
-        });
-    });
 });

test/mocha/comment-filter.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("comment filters", function() {
@@ -75,6 +75,7 @@ describe("comment filters", function() {
 
     it("Should handle shebang and preamble correctly", function() {
         var code = UglifyJS.minify("#!/usr/bin/node\nvar x = 10;", {
+            fromString: true,
             output: { preamble: "/* Build */" }
         }).code;
         assert.strictEqual(code, "#!/usr/bin/node\n/* Build */\nvar x=10;");
@@ -82,6 +83,7 @@ describe("comment filters", function() {
 
     it("Should handle preamble without shebang correctly", function() {
         var code = UglifyJS.minify("var x = 10;", {
+            fromString: true,
             output: { preamble: "/* Build */" }
         }).code;
         assert.strictEqual(code, "/* Build */\nvar x=10;");

test/mocha/comment.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("Comment", function() {
     it("Should recognize eol of single line comments", function() {
@@ -20,7 +20,7 @@ describe("Comment", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.throws(function() {
-                uglify.parse(tests[i]);
+                uglify.parse(tests[i], {fromString: true})
             }, fail, tests[i]);
         }
     });
@@ -43,7 +43,7 @@ describe("Comment", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.throws(function() {
-                uglify.parse(tests[i]);
+                uglify.parse(tests[i], {fromString: true})
             }, fail, tests[i]);
         }
     });

test/mocha/comment_before_constant.js

@@ -6,7 +6,9 @@ describe("comment before constant", function() {
 
     it("Should test comment before constant is retained and output after mangle.", function() {
         var result = Uglify.minify(js, {
+            fromString: true,
             compress: { collapse_vars: false, reduce_vars: false },
+            mangle: {},
             output: { comments: true },
         });
         assert.strictEqual(result.code, 'function f(){/*c1*/var/*c2*/n=/*c3*/!1;return n}');
@@ -14,9 +16,12 @@ describe("comment before constant", function() {
 
     it("Should test code works when comments disabled.", function() {
         var result = Uglify.minify(js, {
+            fromString: true,
             compress: { collapse_vars: false, reduce_vars: false },
+            mangle: {},
             output: { comments: false },
         });
         assert.strictEqual(result.code, 'function f(){var n=!1;return n}');
     });
 });
+

test/mocha/directives.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("Directives", function() {
     it ("Should allow tokenizer to store directives state", function() {
@@ -197,7 +197,7 @@ describe("Directives", function() {
         assert.strictEqual(
             uglify.minify(
                 '"use strict";\'use strict\';"use strict";"use strict";;\'use strict\';console.log(\'use strict\');',
-                {output: {beautify: true, quote_style: 3}, compress: false}
+                {fromString: true, output: {beautify: true, quote_style: 3}, compress: false}
             ).code,
             '"use strict";\n\n\'use strict\';\n\n"use strict";\n\n"use strict";\n\n;\'use strict\';\n\nconsole.log(\'use strict\');'
         );
@@ -225,7 +225,7 @@ describe("Directives", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0], {compress: false, mangle: false}).code,
+                uglify.minify(tests[i][0], {fromString: true, quote_style: 3, compress: false, mangle: false}).code,
                 tests[i][1],
                 tests[i][0]
             );
@@ -234,7 +234,7 @@ describe("Directives", function() {
 
     it("Should add double semicolon when relying on automatic semicolon insertion", function() {
         var code = uglify.minify('"use strict";"use\\x20strict";',
-            {output: {semicolons: false}, compress: false}
+            {fromString: true, output: {semicolons: false}, compress: false}
         ).code;
         assert.strictEqual(code, '"use strict";;"use strict"\n');
     });
@@ -340,7 +340,7 @@ describe("Directives", function() {
         ];
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0], {output:{quote_style: tests[i][1]}, compress: false}).code,
+                uglify.minify(tests[i][0], {fromString: true, output:{quote_style: tests[i][1]}, compress: false}).code,
                 tests[i][2],
                 tests[i][0] + " using mode " + tests[i][1]
             );
@@ -351,28 +351,18 @@ describe("Directives", function() {
         var tests = [
             [
                 '"use strict";"use strict";"use strict";"use foo";"use strict";;"use sloppy";doSomething("foo");',
-                '"use strict";"use foo";doSomething("foo");',
+                '"use strict";"use foo";doSomething("foo");'
-                'function f(){ "use strict" }',
-                'function f(){ "use asm" }',
-                'function f(){ "use nondirective" }',
-                'function f(){ ;"use strict" }',
-                'function f(){ "use \n"; }',
             ],
             [
                  // Nothing gets optimised in the compressor because "use asm" is the first statement
                 '"use asm";"use\\x20strict";1+1;',
-                '"use asm";;"use strict";1+1;', // Yet, the parser noticed that "use strict" wasn't a directive
+                '"use asm";;"use strict";1+1;' // Yet, the parser noticed that "use strict" wasn't a directive
-                'function f(){"use strict"}',
-                'function f(){"use asm"}',
-                'function f(){"use nondirective"}',
-                'function f(){}',
-                'function f(){}',
             ]
         ];
 
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0]).code,
+                uglify.minify(tests[i][0], {fromString: true, compress: {collapse_vars: true, side_effects: true}}).code,
                 tests[i][1],
                 tests[i][0]
             );

test/mocha/getter-setter.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("Getters and setters", function() {
@@ -71,7 +71,7 @@ describe("Getters and setters", function() {
         var fail = function(data) {
             return function (e) {
                 return e instanceof UglifyJS.JS_Parse_Error &&
-                    e.message === "Unexpected token: operator (" + data.operator + ")";
+                    e.message === "Invalid getter/setter name: " + data.operator;
             };
         };
 

test/mocha/glob.js

@@ -1,80 +1,58 @@
+var Uglify = require('../../');
 var assert = require("assert");
-var exec = require("child_process").exec;
 var path = require("path");
-var readFileSync = require("fs").readFileSync;
 
-describe("bin/uglifyjs with input file globs", function() {
+describe("minify() with input file globs", function() {
-    var uglifyjscmd = '"' + process.argv[0] + '" bin/uglifyjs';
+    it("minify() with one input file glob string.", function() {
-    it("bin/uglifyjs with one input file extension glob.", function(done) {
+        var result = Uglify.minify("test/input/issue-1242/foo.*");
-        var command = uglifyjscmd + ' "test/input/issue-1242/foo.*" -cm';
+        assert.strictEqual(result.code, 'function foo(o){print("Foo:",2*o)}var print=console.log.bind(console);');
-
-        exec(command, function(err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, 'function foo(o){print("Foo:",2*o)}var print=console.log.bind(console);\n');
-            done();
     });
+    it("minify() with an array of one input file glob.", function() {
+        var result = Uglify.minify([
+            "test/input/issue-1242/b*.es5",
+        ]);
+        assert.strictEqual(result.code, 'function bar(n){return 3*n}function baz(n){return n/2}');
     });
-    it("bin/uglifyjs with one input file name glob.", function(done) {
+    it("minify() with an array of multiple input file globs.", function() {
-        var command = uglifyjscmd + ' "test/input/issue-1242/b*.es5" -cm';
+        var result = Uglify.minify([
-
+            "test/input/issue-1242/???.es5",
-        exec(command, function(err, stdout) {
+            "test/input/issue-1242/*.js",
-            if (err) throw err;
+        ], {
-
+            compress: { toplevel: true }
-            assert.strictEqual(stdout, 'function bar(n){return 3*n}function baz(n){return n/2}\n');
-            done();
         });
+        assert.strictEqual(result.code, 'var print=console.log.bind(console),a=function(n){return 3*n}(3),b=function(n){return n/2}(12);print("qux",a,b),function(n){print("Foo:",2*n)}(11);');
     });
-    it("bin/uglifyjs with multiple input file globs.", function(done) {
+    it("should throw with non-matching glob string", function() {
-        var command = uglifyjscmd + ' "test/input/issue-1242/???.es5" "test/input/issue-1242/*.js" -mc toplevel';
+        var glob = "test/input/issue-1242/blah.*";
-
+        assert.strictEqual(Uglify.simple_glob(glob).length, 1);
-        exec(command, function(err, stdout) {
+        assert.strictEqual(Uglify.simple_glob(glob)[0], glob);
-            if (err) throw err;
+        assert.throws(function() {
-
+            Uglify.minify(glob);
-            assert.strictEqual(stdout, 'var print=console.log.bind(console);print("qux",9,6),print("Foo:",2*11);\n');
+        }, "should throw file not found");
-            done();
     });
+    it('"?" in glob string should not match "/"', function() {
+        var glob = "test/input?issue-1242/foo.*";
+        assert.strictEqual(Uglify.simple_glob(glob).length, 1);
+        assert.strictEqual(Uglify.simple_glob(glob)[0], glob);
+        assert.throws(function() {
+            Uglify.minify(glob);
+        }, "should throw file not found");
     });
-    it("should throw with non-matching glob string", function(done) {
+    it("should handle special characters in glob string", function() {
-        var command = uglifyjscmd + ' "test/input/issue-1242/blah.*"';
+        var result = Uglify.minify("test/input/issue-1632/^{*}[???](*)+$.??");
-
+        assert.strictEqual(result.code, "console.log(x);");
-        exec(command, function(err, stdout, stderr) {
-            assert.ok(err);
-            assert.ok(/^ERROR: ENOENT/.test(stderr));
-            done();
     });
-    });
+    it("should handle array of glob strings - matching and otherwise", function() {
-    it('"?" in glob string should not match "/"', function(done) {
-        var command = uglifyjscmd + ' "test/input?issue-1242/foo.*"';
-
-        exec(command, function(err, stdout, stderr) {
-            assert.ok(err);
-            assert.ok(/^ERROR: ENOENT/.test(stderr));
-            done();
-        });
-    });
-    it("should handle special characters in glob string", function(done) {
-        var command = uglifyjscmd + ' "test/input/issue-1632/^{*}[???](*)+$.??" -cm';
-
-        exec(command, function(err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, "console.log(x);\n");
-            done();
-        });
-    });
-    it("should handle array of glob strings - matching and otherwise", function(done) {
         var dir = "test/input/issue-1242";
-        var command = uglifyjscmd + ' "' + [
+        var matches = Uglify.simple_glob([
             path.join(dir, "b*.es5"),
             path.join(dir, "z*.es5"),
-            path.join(dir, "*.js")
+            path.join(dir, "*.js"),
-        ].join('" "') + '"';
+        ]);
-
+        assert.strictEqual(matches.length, 4);
-        exec(command, function(err, stdout, stderr) {
+        assert.strictEqual(matches[0], path.join(dir, "bar.es5"));
-            assert.ok(err);
+        assert.strictEqual(matches[1], path.join(dir, "baz.es5"));
-            assert.ok(/^ERROR: ENOENT.*?z\*\.es5/.test(stderr));
+        assert.strictEqual(matches[2], path.join(dir, "z*.es5"));
-            done();
+        assert.strictEqual(matches[3], path.join(dir, "qux.js"));
-        });
     });
 });

test/mocha/huge-number-of-comments.js

@@ -8,7 +8,12 @@ describe("Huge number of comments.", function() {
         for (i = 1; i <= 5000; ++i) { js += "// " + i + "\n"; }
         for (; i <= 10000; ++i) { js += "/* " + i + " */ /**/"; }
         js += "x; }";
-        var result = Uglify.minify(js, { mangle: false });
+        var result = Uglify.minify(js, {
+            fromString: true,
+            mangle: false,
+            compress: {}
+        });
         assert.strictEqual(result.code, "function lots_of_comments(x){return 7-x}");
     });
 });
+

test/mocha/input-sourcemaps.js

@@ -25,9 +25,9 @@ describe("input sourcemaps", function() {
         transpilemap = sourceMap || getMap();
 
         var result = Uglify.minify(transpiled, {
-            sourceMap: {
+            fromString: true,
-                content: transpilemap
+            inSourceMap: transpilemap,
-            }
+            outSourceMap: true
         });
 
         map = new SourceMapConsumer(result.map);

test/mocha/let.js

@@ -11,7 +11,7 @@ describe("let", function() {
             s += "var v" + i + "=0;";
         }
         s += '}';
-        var result = Uglify.minify(s, {compress: false});
+        var result = Uglify.minify(s, {fromString: true, compress: false});
 
         // Verify that select keywords and reserved keywords not produced
         assert.strictEqual(result.code.indexOf("var let="), -1);

test/mocha/line-endings.js

@@ -1,10 +1,11 @@
-var Uglify = require("../node");
+var Uglify = require('../../');
 var assert = require("assert");
 
 describe("line-endings", function() {
     var options = {
-        compress: false,
+        fromString: true,
         mangle: false,
+        compress: false,
         output: {
             beautify: false,
             comments: /^!/,

test/mocha/minify-file-map.js

@@ -6,41 +6,43 @@ describe("Input file as map", function() {
         var jsMap = {
             '/scripts/foo.js': 'var foo = {"x": 1, y: 2, \'z\': 3};'
         };
-        var result = Uglify.minify(jsMap, {sourceMap: true});
+        var result = Uglify.minify(jsMap, {fromString: true, outSourceMap: true});
 
         var map = JSON.parse(result.map);
         assert.strictEqual(result.code, 'var foo={x:1,y:2,z:3};');
         assert.deepEqual(map.sources, ['/scripts/foo.js']);
         assert.strictEqual(map.file, undefined);
 
-        result = Uglify.minify(jsMap);
+        result = Uglify.minify(jsMap, {fromString: true, outFileName: 'out.js'});
-        assert.strictEqual(result.map, undefined);
+        assert.strictEqual(result.map, null);
 
-        result = Uglify.minify(jsMap, {sourceMap: {filename: 'out.js'}});
+        result = Uglify.minify(jsMap, {fromString: true, outFileName: 'out.js', outSourceMap: true});
         map = JSON.parse(result.map);
         assert.strictEqual(map.file, 'out.js');
     });
 
-    it("Should accept array of strings", function() {
+    it("Should accept array of objects and strings", function() {
         var jsSeq = [
-            'var foo = {"x": 1, y: 2, \'z\': 3};',
+            {'/scripts/foo.js': 'var foo = {"x": 1, y: 2, \'z\': 3};'},
             'var bar = 15;'
         ];
-        var result = Uglify.minify(jsSeq, {sourceMap: true});
+        var result = Uglify.minify(jsSeq, {fromString: true, outSourceMap: true});
 
         var map = JSON.parse(result.map);
         assert.strictEqual(result.code, 'var foo={x:1,y:2,z:3},bar=15;');
-        assert.deepEqual(map.sources, ['0', '1']);
+        assert.strictEqual(map.sources[0], '/scripts/foo.js');
     });
 
     it("Should correctly include source", function() {
-        var jsMap = {
+        var jsSeq = [
-            '/scripts/foo.js': 'var foo = {"x": 1, y: 2, \'z\': 3};'
+            {'/scripts/foo.js': 'var foo = {"x": 1, y: 2, \'z\': 3};'},
-        };
+            'var bar = 15;'
-        var result = Uglify.minify(jsMap, {sourceMap: {includeSources: true}});
+        ];
+        var result = Uglify.minify(jsSeq, {fromString: true, outSourceMap: true, sourceMapIncludeSources: true});
 
         var map = JSON.parse(result.map);
-        assert.strictEqual(result.code, 'var foo={x:1,y:2,z:3};');
+        assert.strictEqual(result.code, 'var foo={x:1,y:2,z:3},bar=15;');
-        assert.deepEqual(map.sourcesContent, ['var foo = {"x": 1, y: 2, \'z\': 3};']);
+        assert.deepEqual(map.sourcesContent, ['var foo = {"x": 1, y: 2, \'z\': 3};', 'var bar = 15;']);
     });
+
 });

test/mocha/minify.js

@@ -2,29 +2,18 @@ var Uglify = require('../../');
 var assert = require("assert");
 var readFileSync = require("fs").readFileSync;
 
-function read(path) {
-    return readFileSync(path, "utf8");
-}
-
 describe("minify", function() {
     it("Should test basic sanity of minify with default options", function() {
         var js = 'function foo(bar) { if (bar) return 3; else return 7; var u = not_called(); }';
-        var result = Uglify.minify(js);
+        var result = Uglify.minify(js, {fromString: true});
         assert.strictEqual(result.code, 'function foo(n){return n?3:7}');
     });
 
-    it("Should skip inherited keys from `files`", function() {
-        var files = Object.create({ skip: this });
-        files[0] = "alert(1 + 1)";
-        var result = Uglify.minify(files);
-        assert.strictEqual(result.code, "alert(2);");
-    });
-
     describe("keep_quoted_props", function() {
         it("Should preserve quotes in object literals", function() {
             var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
             var result = Uglify.minify(js, {
-                output: {
+                fromString: true, output: {
                     keep_quoted_props: true
                 }});
             assert.strictEqual(result.code, 'var foo={"x":1,y:2,"z":3};');
@@ -33,7 +22,7 @@ describe("minify", function() {
         it("Should preserve quote styles when quote_style is 3", function() {
             var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
             var result = Uglify.minify(js, {
-                output: {
+                fromString: true, output: {
                     keep_quoted_props: true,
                     quote_style: 3
                 }});
@@ -43,7 +32,7 @@ describe("minify", function() {
         it("Should not preserve quotes in object literals when disabled", function() {
             var js = 'var foo = {"x": 1, y: 2, \'z\': 3};';
             var result = Uglify.minify(js, {
-                output: {
+                fromString: true, output: {
                     keep_quoted_props: false,
                     quote_style: 3
                 }});
@@ -55,13 +44,12 @@ describe("minify", function() {
         it("Shouldn't mangle quoted properties", function() {
             var js = 'a["foo"] = "bar"; a.color = "red"; x = {"bar": 10};';
             var result = Uglify.minify(js, {
+                fromString: true,
                 compress: {
                     properties: false
                 },
-                mangle: {
+                mangleProperties: {
-                    properties: {
+                    ignore_quoted: true
-                        keep_quoted: true
-                    }
                 },
                 output: {
                     keep_quoted_props: true,
@@ -75,12 +63,10 @@ describe("minify", function() {
 
     describe("inSourceMap", function() {
         it("Should read the given string filename correctly when sourceMapIncludeSources is enabled (#1236)", function() {
-            var result = Uglify.minify(read("./test/input/issue-1236/simple.js"), {
+            var result = Uglify.minify('./test/input/issue-1236/simple.js', {
-                sourceMap: {
+                outSourceMap: "simple.min.js.map",
-                    content: read("./test/input/issue-1236/simple.js.map"),
+                inSourceMap: "./test/input/issue-1236/simple.js.map",
-                    filename: "simple.min.js",
+                sourceMapIncludeSources: true
-                    includeSources: true
-                }
             });
 
             var map = JSON.parse(result.map);
@@ -91,12 +77,10 @@ describe("minify", function() {
                 'let foo = x => "foo " + x;\nconsole.log(foo("bar"));');
         });
         it("Should process inline source map", function() {
-            var code = Uglify.minify(read("./test/input/issue-520/input.js"), {
+            var code = Uglify.minify("./test/input/issue-520/input.js", {
                 compress: { toplevel: true },
-                sourceMap: {
+                inSourceMap: "inline",
-                    content: "inline",
+                sourceMapInline: true
-                    url: "inline"
-                }
             }).code + "\n";
             assert.strictEqual(code, readFileSync("test/input/issue-520/output.js", "utf8"));
         });
@@ -107,13 +91,11 @@ describe("minify", function() {
                 warnings.push(txt);
             };
             try {
-                var result = Uglify.minify(read("./test/input/issue-1323/sample.js"), {
+                var result = Uglify.minify("./test/input/issue-1323/sample.js", {
+                    inSourceMap: "inline",
                     mangle: false,
-                    sourceMap: {
-                        content: "inline"
-                    }
                 });
-                assert.strictEqual(result.code, "var bar=function(){return function(bar){return bar}}();");
+                assert.strictEqual(result.code, "var bar=function(){function foo(bar){return bar}return foo}();");
                 assert.strictEqual(warnings.length, 1);
                 assert.strictEqual(warnings[0], "inline source map not found");
             } finally {
@@ -121,54 +103,50 @@ describe("minify", function() {
             }
         });
         it("Should fail with multiple input and inline source map", function() {
-            var result = Uglify.minify([
+            assert.throws(function() {
-                read("./test/input/issue-520/input.js"),
+                Uglify.minify([
-                read("./test/input/issue-520/output.js")
+                    "./test/input/issue-520/input.js",
+                    "./test/input/issue-520/output.js"
                 ], {
-                sourceMap: {
+                    inSourceMap: "inline",
-                    content: "inline",
+                    sourceMapInline: true
-                    url: "inline"
+                });
-                }
+            });
+        });
+        it("Should fail with SpiderMonkey and inline source map", function() {
+            assert.throws(function() {
+                Uglify.minify("./test/input/issue-520/input.js", {
+                    inSourceMap: "inline",
+                    sourceMapInline: true,
+                    spidermonkey: true
+                });
             });
-            var err = result.error;
-            assert.ok(err instanceof Error);
-            assert.strictEqual(err.stack.split(/\n/)[0], "Error: inline source map only works with singular input");
         });
     });
 
     describe("sourceMapInline", function() {
         it("should append source map to output js when sourceMapInline is enabled", function() {
             var result = Uglify.minify('var a = function(foo) { return foo; };', {
-                sourceMap: {
+                fromString: true,
-                    url: "inline"
+                sourceMapInline: true
-                }
             });
             var code = result.code;
             assert.strictEqual(code, "var a=function(n){return n};\n" +
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIjAiXSwibmFtZXMiOlsiYSIsImZvbyJdLCJtYXBwaW5ncyI6IkFBQUEsSUFBSUEsRUFBSSxTQUFTQyxHQUFPLE9BQU9BIn0=");
+                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbIj8iXSwibmFtZXMiOlsiYSIsImZvbyJdLCJtYXBwaW5ncyI6IkFBQUEsR0FBSUEsR0FBSSxTQUFTQyxHQUFPLE1BQU9BIn0=");
         });
         it("should not append source map to output js when sourceMapInline is not enabled", function() {
-            var result = Uglify.minify('var a = function(foo) { return foo; };');
+            var result = Uglify.minify('var a = function(foo) { return foo; };', {
+                fromString: true
+            });
             var code = result.code;
             assert.strictEqual(code, "var a=function(n){return n};");
         });
-        it("should work with max_line_len", function() {
-            var result = Uglify.minify(read("./test/input/issue-505/input.js"), {
-                output: {
-                    max_line_len: 20
-                },
-                sourceMap: {
-                    url: "inline"
-                }
-            });
-            assert.strictEqual(result.error, undefined);
-            assert.strictEqual(result.code, read("./test/input/issue-505/output.js"));
-        });
     });
 
     describe("#__PURE__", function() {
         it("should drop #__PURE__ hint after use", function() {
             var result = Uglify.minify('//@__PURE__ comment1 #__PURE__ comment2\n foo(), bar();', {
+                fromString: true,
                 output: {
                     comments: "all",
                     beautify: false,
@@ -179,6 +157,7 @@ describe("minify", function() {
         });
         it("should not drop #__PURE__ hint if function is retained", function() {
             var result = Uglify.minify("var a = /*#__PURE__*/(function(){ foo(); })();", {
+                fromString: true,
                 output: {
                     comments: "all",
                     beautify: false,
@@ -190,41 +169,27 @@ describe("minify", function() {
     });
 
     describe("JS_Parse_Error", function() {
-        it("should return syntax error", function() {
+        it("should throw syntax error", function() {
-            var result = Uglify.minify("function f(a{}");
+            assert.throws(function() {
-            var err = result.error;
+                Uglify.minify("function f(a{}", { fromString: true });
+            }, function(err) {
                 assert.ok(err instanceof Error);
                 assert.strictEqual(err.stack.split(/\n/)[0], "SyntaxError: Unexpected token punc «{», expected punc «,»");
-            assert.strictEqual(err.filename, "0");
+                assert.strictEqual(err.filename, 0);
                 assert.strictEqual(err.line, 1);
                 assert.strictEqual(err.col, 12);
+                return true;
+            });
         });
     });
 
-    describe("global_defs", function() {
+    describe("Compressor", function() {
-        it("should throw for non-trivial expressions", function() {
+        it("should be backward compatible with ast.transform(compressor)", function() {
-            var result = Uglify.minify("alert(42);", {
+            var ast = Uglify.parse("function f(a){for(var i=0;i<a;i++)console.log(i)}");
-                compress: {
+            ast.figure_out_scope();
-                    global_defs: {
+            ast = ast.transform(Uglify.Compressor());
-                        "@alert": "debugger"
+            assert.strictEqual(ast.print_to_string(), "function f(a){for(var i=0;i<a;i++)console.log(i)}");
-                    }
-                }
-            });
-            var err = result.error;
-            assert.ok(err instanceof Error);
-            assert.strictEqual(err.stack.split(/\n/)[0], "Error: Can't handle expression: debugger");
-        });
-        it("should skip inherited properties", function() {
-            var foo = Object.create({ skip: this });
-            foo.bar = 42;
-            var result = Uglify.minify("alert(FOO);", {
-                compress: {
-                    global_defs: {
-                        FOO: foo
-                    }
-                }
-            });
-            assert.strictEqual(result.code, "alert({bar:42});");
-        });
         });
+    })
+
 });

test/mocha/new.js

@@ -34,6 +34,7 @@ describe("New", function() {
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
                 uglify.minify(tests[i], {
+                    fromString: true,
                     output: {beautify: true},
                     compress: false,
                     mangle: false
@@ -75,6 +76,7 @@ describe("New", function() {
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
                 uglify.minify(tests[i], {
+                    fromString: true,
                     output: {beautify: false},
                     compress: false,
                     mangle: false

test/mocha/number-literal.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("Number literals", function () {
     it("Should not allow legacy octal literals in strict mode", function() {

test/mocha/operator.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require("../../");
 var assert = require("assert");
 
 describe("operator", function() {

test/mocha/release.js

@@ -1,13 +1,16 @@
 var assert = require("assert");
-var semver = require("semver");
 var spawn = require("child_process").spawn;
 
 if (!process.env.UGLIFYJS_TEST_ALL) return;
 
 function run(command, args, done) {
+    var id = setInterval(function() {
+        process.stdout.write("\0");
+    }, 5 * 60 * 1000);
     spawn(command, args, {
-        stdio: [ "ignore", 1, 2 ]
+        stdio: "ignore"
     }).on("exit", function(code) {
+        clearInterval(id);
         assert.strictEqual(code, 0);
         done();
     });
@@ -33,17 +36,18 @@ describe("test/benchmark.js", function() {
     });
 });
 
-if (semver.satisfies(process.version, "0.12")) return;
 describe("test/jetstream.js", function() {
     this.timeout(20 * 60 * 1000);
+    it("Should install phantomjs-prebuilt", function(done) {
+        run("npm", ["install", "phantomjs-prebuilt@2.1.14"], done);
+    });
     [
-        "-mc",
+        "-mc warnings=false",
-        "-mc keep_fargs=false,passes=3,pure_getters,unsafe,unsafe_comps,unsafe_math,unsafe_proto",
+        "-mc keep_fargs=false,passes=3,pure_getters,unsafe,unsafe_comps,unsafe_math,unsafe_proto,warnings=false",
     ].forEach(function(options) {
         it("Should pass with options " + options, function(done) {
             var args = options.split(/ /);
             args.unshift("test/jetstream.js");
-            args.push("-b", "beautify=false,webkit");
             run(process.argv[0], args, done);
         });
     });

test/mocha/screw-ie8.js

@@ -13,7 +13,9 @@ describe("screw-ie8", function () {
                     }\
                     console.log('undefined is ' + undefined);\
                     return b === undefined;\
-                };"
+                };", {
+                    fromString: true
+                }
             ).code,
             'function a(o){try{throw"Stuff"}catch(o){console.log("caught: "+o)}return console.log("undefined is "+void 0),void 0===o}'
         );

test/mocha/spidermonkey.js

@@ -1,23 +1,32 @@
 var assert = require("assert");
 var exec = require("child_process").exec;
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("spidermonkey export/import sanity test", function() {
     it("should produce a functional build when using --self with spidermonkey", function (done) {
-        this.timeout(30000);
+        this.timeout(20000);
 
         var uglifyjs = '"' + process.argv[0] + '" bin/uglifyjs';
-        var command = uglifyjs + " --self -cm --wrap SpiderUglify -o spidermonkey | " +
+        var command = uglifyjs + " --self -cm --wrap SpiderUglify --dump-spidermonkey-ast | " +
-            uglifyjs + " -p spidermonkey -cm";
+            uglifyjs + " --spidermonkey -cm";
 
         exec(command, function (err, stdout) {
             if (err) throw err;
 
             eval(stdout);
             assert.strictEqual(typeof SpiderUglify, "object");
-            var result = SpiderUglify.minify("foo([true,,2+3]);");
+
-            assert.strictEqual(result.error, undefined);
+            var ast = SpiderUglify.parse("foo([true,,2+3]);");
-            assert.strictEqual(result.code, "foo([!0,,5]);");
+            assert.strictEqual(true, ast instanceof SpiderUglify.AST_Node);
+
+            ast.figure_out_scope();
+            ast = SpiderUglify.Compressor({}).compress(ast);
+            assert.strictEqual(true, ast instanceof SpiderUglify.AST_Node);
+
+            var stream = SpiderUglify.OutputStream({});
+            ast.print(stream);
+            var code = stream.toString();
+            assert.strictEqual(code, "foo([!0,,5]);");
 
             done();
         });

test/mocha/string-literal.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("String literals", function() {

test/mocha/with.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("With", function() {
     it("Should throw syntaxError when using with statement in strict mode", function() {

test/mozilla-ast.js

@@ -1,73 +1,103 @@
 // Testing UglifyJS <-> SpiderMonkey AST conversion
-"use strict";
+// through generative testing.
 
+var UglifyJS = require(".."),
+    escodegen = require("escodegen"),
+    esfuzz = require("esfuzz"),
+    estraverse = require("estraverse"),
+    prefix = "\r    ";
+
+// Normalizes input AST for UglifyJS in order to get correct comparison.
+
+function normalizeInput(ast) {
+    return estraverse.replace(ast, {
+        enter: function(node, parent) {
+            switch (node.type) {
+                // Internally mark all the properties with semi-standard type "Property".
+                case "ObjectExpression":
+                    node.properties.forEach(function (property) {
+                        property.type = "Property";
+                    });
+                    break;
+
+                // Since UglifyJS doesn"t recognize different types of property keys,
+                // decision on SpiderMonkey node type is based on check whether key
+                // can be valid identifier or not - so we do in input AST.
+                case "Property":
+                    var key = node.key;
+                    if (key.type === "Literal" && typeof key.value === "string" && UglifyJS.is_identifier(key.value)) {
+                        node.key = {
+                            type: "Identifier",
+                            name: key.value
+                        };
+                    } else if (key.type === "Identifier" && !UglifyJS.is_identifier(key.name)) {
+                        node.key = {
+                            type: "Literal",
+                            value: key.name
+                        };
+                    }
+                    break;
+
+                // UglifyJS internally flattens all the expression sequences - either
+                // to one element (if sequence contains only one element) or flat list.
+                case "SequenceExpression":
+                    node.expressions = node.expressions.reduce(function flatten(list, expr) {
+                        return list.concat(expr.type === "SequenceExpression" ? expr.expressions.reduce(flatten, []) : [expr]);
+                    }, []);
+                    if (node.expressions.length === 1) {
+                        return node.expressions[0];
+                    }
+                    break;
+            }
+        }
+    });
+}
+
+module.exports = function(options) {
+    console.log("--- UglifyJS <-> Mozilla AST conversion");
+
+    for (var counter = 0; counter < options.iterations; counter++) {
+        process.stdout.write(prefix + counter + "/" + options.iterations);
+
+        var ast1 = normalizeInput(esfuzz.generate({
+            maxDepth: options.maxDepth
+        }));
+
+        var ast2 =
+            UglifyJS
+            .AST_Node
+            .from_mozilla_ast(ast1)
+            .to_mozilla_ast();
+
+        var astPair = [
+            {name: 'expected', value: ast1},
+            {name: 'actual', value: ast2}
+        ];
+
+        var jsPair = astPair.map(function(item) {
+            return {
+                name: item.name,
+                value: escodegen.generate(item.value)
+            }
+        });
+
+        if (jsPair[0].value !== jsPair[1].value) {
+            var fs = require("fs");
             var acorn = require("acorn");
-var ufuzz = require("./ufuzz");
-var UglifyJS = require("..");
 
-function try_beautify(code) {
+            fs.existsSync("tmp") || fs.mkdirSync("tmp");
-    var beautified = UglifyJS.minify(code, {
+
-        compress: false,
+            jsPair.forEach(function (item) {
-        mangle: false,
+                var fileName = "tmp/dump_" + item.name;
-        output: {
+                var ast = acorn.parse(item.value);
-            beautify: true,
+                fs.writeFileSync(fileName + ".js", item.value);
-            bracketize: true
+                fs.writeFileSync(fileName + ".json", JSON.stringify(ast, null, 2));
-        }
             });
-    if (beautified.error) {
+
-        console.log("// !!! beautify failed !!!");
+            process.stdout.write("\n");
-        console.log(beautified.error.stack);
+            throw new Error("Got different outputs, check out tmp/dump_*.{js,json} for codes and ASTs.");
-        console.log(code);
-    } else {
-        console.log("// (beautified)");
-        console.log(beautified.code);
         }
     }
 
-function test(original, estree, description) {
+    process.stdout.write(prefix + "Probability of error is less than " + (100 / options.iterations) + "%, stopping.\n");
-    var transformed = UglifyJS.minify(UglifyJS.AST_Node.from_mozilla_ast(estree), {
+};
-        compress: false,
-        mangle: false
-    });
-    if (transformed.error || original !== transformed.code) {
-        console.log("//=============================================================");
-        console.log("// !!!!!! Failed... round", round);
-        console.log("// original code");
-        try_beautify(original);
-        console.log();
-        console.log();
-        console.log("//-------------------------------------------------------------");
-        console.log("//", description);
-        if (transformed.error) {
-            console.log(transformed.error.stack);
-        } else {
-            try_beautify(transformed.code);
-        }
-        console.log("!!!!!! Failed... round", round);
-        process.exit(1);
-    }
-}
-
-var num_iterations = ufuzz.num_iterations;
-for (var round = 1; round <= num_iterations; round++) {
-    process.stdout.write(round + " of " + num_iterations + "\r");
-    var code = ufuzz.createTopLevelCode();
-    var uglified = UglifyJS.minify(code, {
-        compress: false,
-        mangle: false,
-        output: {
-            ast: true
-        }
-    });
-    test(uglified.code, uglified.ast.to_mozilla_ast(), "AST_Node.to_mozilla_ast()");
-    try {
-        test(uglified.code, acorn.parse(code), "acorn.parse()");
-    } catch (e) {
-        console.log("//=============================================================");
-        console.log("// acorn parser failed... round", round);
-        console.log(e);
-        console.log("// original code");
-        console.log(code);
-    }
-}
-console.log();

test/node.js

@@ -1,6 +0,0 @@
-var fs = require("fs");
-
-new Function("MOZ_SourceMap", "exports", require("../tools/node").FILES.map(function(file) {
-    if (/exports\.js$/.test(file)) file = require.resolve("./exports");
-    return fs.readFileSync(file, "utf8");
-}).join("\n\n"))(require("source-map"), exports);

test/run-tests.js

@@ -1,11 +1,10 @@
 #! /usr/bin/env node
 
-var U = require("./node");
+var U = require("../tools/node");
 var path = require("path");
 var fs = require("fs");
 var assert = require("assert");
 var sandbox = require("./sandbox");
-var semver = require("semver");
 
 var tests_dir = path.dirname(module.filename);
 var failures = 0;
@@ -24,6 +23,12 @@ mocha_tests();
 var run_sourcemaps_tests = require('./sourcemaps');
 run_sourcemaps_tests();
 
+var run_ast_conversion_tests = require("./mozilla-ast");
+
+run_ast_conversion_tests({
+    iterations: 1000
+});
+
 /* -----[ utils ]----- */
 
 function tmpl() {
@@ -165,8 +170,7 @@ function run_compress_tests() {
                         failed_files[file] = 1;
                     }
                 }
-                if (test.expect_stdout
+                if (test.expect_stdout) {
-                    && (!test.node_version || semver.satisfies(process.version, test.node_version))) {
                     var stdout = sandbox.run_code(input_code);
                     if (test.expect_stdout === true) {
                         test.expect_stdout = stdout;
@@ -276,14 +280,7 @@ function parse_test(file) {
             if (node instanceof U.AST_LabeledStatement) {
                 var label = node.label;
                 assert.ok(
-                    [
+                    ["input", "expect", "expect_exact", "expect_warnings", "expect_stdout"].indexOf(label.name) >= 0,
-                        "input",
-                        "expect",
-                        "expect_exact",
-                        "expect_warnings",
-                        "expect_stdout",
-                        "node_version",
-                    ].indexOf(label.name) >= 0,
                     tmpl("Unsupported label {name} [{line},{col}]", {
                         name: label.name,
                         line: label.start.line,
@@ -291,27 +288,11 @@ function parse_test(file) {
                     })
                 );
                 var stat = node.body;
-                if (label.name == "expect_exact" || label.name == "node_version") {
+                if (label.name == "expect_exact") {
                     test[label.name] = read_string(stat);
                 } else if (label.name == "expect_stdout") {
-                    if (stat.TYPE == "SimpleStatement") {
+                    if (stat.TYPE == "SimpleStatement" && stat.body instanceof U.AST_Boolean) {
-                        var body = stat.body;
+                        test[label.name] = stat.body.value;
-                        if (body instanceof U.AST_Boolean) {
-                            test[label.name] = body.value;
-                        } else if (body instanceof U.AST_Call) {
-                            var ctor = global[body.expression.name];
-                            assert.ok(ctor === Error || ctor.prototype instanceof Error, tmpl("Unsupported expect_stdout format [{line},{col}]", {
-                                line: label.start.line,
-                                col: label.start.col
-                            }));
-                            test[label.name] = ctor.apply(null, body.args.map(function(node) {
-                                assert.ok(node instanceof U.AST_Constant, tmpl("Unsupported expect_stdout format [{line},{col}]", {
-                                    line: label.start.line,
-                                    col: label.start.col
-                                }));
-                                return node.value;
-                            }));
-                        }
                     } else {
                         test[label.name] = read_string(stat) + "\n";
                     }

test/sandbox.js

@@ -1,17 +1,14 @@
-var semver = require("semver");
 var vm = require("vm");
 
-function safe_log(arg, level) {
+function safe_log(arg) {
     if (arg) switch (typeof arg) {
       case "function":
         return arg.toString();
       case "object":
         if (/Error$/.test(arg.name)) return arg.toString();
         arg.constructor.toString();
-        if (level--) for (var key in arg) {
+        for (var key in arg) {
-            if (!Object.getOwnPropertyDescriptor(arg, key).get) {
+            arg[key] = safe_log(arg[key]);
-                arg[key] = safe_log(arg[key], level);
-            }
         }
     }
     return arg;
@@ -19,25 +16,23 @@ function safe_log(arg, level) {
 
 var FUNC_TOSTRING = [
     "Function.prototype.toString = Function.prototype.valueOf = function() {",
-    "    var id = 100000;",
+    "    var id = 0;",
     "    return function() {",
     '        if (this === Array) return "[Function: Array]";',
     '        if (this === Object) return "[Function: Object]";',
     "        var i = this.name;",
     '        if (typeof i != "number") {',
     "            i = ++id;",
-].concat(Object.getOwnPropertyDescriptor(Function.prototype, "name").configurable ? [
     '            Object.defineProperty(this, "name", {',
     "                get: function() {",
     "                    return i;",
     "                }",
     "            });",
-] : [], [
     "        }",
     '        return "[Function: " + i + "]";',
     "    }",
     "}();",
-]).join("\n");
+].join("\n");
 exports.run_code = function(code) {
     var stdout = "";
     var original_write = process.stdout.write;
@@ -52,13 +47,8 @@ exports.run_code = function(code) {
             "}();",
         ].join("\n"), {
             console: {
-                log: function(msg) {
+                log: function() {
-                    if (arguments.length == 1 && typeof msg == "string") {
+                    return console.log.apply(console, [].map.call(arguments, safe_log));
-                        return console.log("%s", msg);
-                    }
-                    return console.log.apply(console, [].map.call(arguments, function(arg) {
-                        return safe_log(arg, 3);
-                    }));
                 }
             }
         }, { timeout: 5000 });
@@ -69,7 +59,7 @@ exports.run_code = function(code) {
         process.stdout.write = original_write;
     }
 };
-exports.same_stdout = semver.satisfies(process.version, "0.12") ? function(expected, actual) {
+exports.same_stdout = ~process.version.lastIndexOf("v0.12.", 0) ? function(expected, actual) {
     if (typeof expected != typeof actual) return false;
     if (typeof expected != "string") {
         if (expected.name != actual.name) return false;