v3.0.1

Have `minify()` return `Error` in `result.error` rather than throwing it.

README.md

@@ -42,8 +42,7 @@ in sequence and apply any compression options.  The files are parsed in the
 same global scope, that is, a reference from a file to some
 variable/function declared in another file will be matched properly.
 
-If you want to read from STDIN instead, pass a single dash instead of input
-files.
+If no input file is specified, UglifyJS will read from STDIN.
 
 If you wish to pass your options before the input files, separate the two with
 a double dash to prevent input files being used as option arguments:
@@ -96,8 +95,9 @@ The available options are:
                                 `wrap_iife`  Wrap IIFEs in parenthesis. Note: you may
                                              want to disable `negate_iife` under
                                              compressor options.
-    -o, --output <file>         Output file (default STDOUT). Specify "spidermonkey"
-                                to dump SpiderMonkey AST format (as JSON) to STDOUT.
+    -o, --output <file>         Output file path (default STDOUT). Specify `ast` or
+                                `spidermonkey` to write UglifyJS or SpiderMonkey AST
+                                as JSON to STDOUT respectively.
     --comments [filter]         Preserve copyright comments in the output. By
                                 default this works like Google Closure, keeping
                                 JSDoc-style comments that contain "@license" or

bin/uglifyjs

@@ -15,6 +15,7 @@ var path = require("path");
 var program = require("commander");
 var UglifyJS = require("../tools/node");
 
+var skip_keys = [ "cname", "enclosed", "parent_scope", "scope", "thedef", "uses_eval", "uses_with" ];
 var files = {};
 var options = {
     compress: false,
@@ -89,7 +90,7 @@ if (program.mangleProps) {
         if (typeof program.mangleProps != "object") program.mangleProps = {};
         if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
         require("../tools/domprops").forEach(function(name) {
-            UglifyJS.push_uniq(program.mangleProps.reserved, name);
+            UglifyJS._push_uniq(program.mangleProps.reserved, name);
         });
     }
     if (typeof options.mangle != "object") options.mangle = {};
@@ -107,6 +108,12 @@ if (program.nameCache) {
         }
     }
 }
+if (program.output == "ast") {
+    options.output = {
+        ast: true,
+        code: false
+    };
+}
 if (program.parse) {
     if (program.parse.acorn || program.parse.spidermonkey) {
         if (program.sourceMap) fatal("ERROR: inline source map only works with built-in parser");
@@ -165,7 +172,7 @@ function run() {
     UglifyJS.AST_Node.warn_function = function(msg) {
         console.error("WARN:", msg);
     };
-    if (program.stats)  program.stats = Date.now();
+    if (program.stats) program.stats = Date.now();
     try {
         if (program.parse) {
             if (program.parse.acorn) {
@@ -185,9 +192,13 @@ function run() {
                 });
             }
         }
-        var result = UglifyJS.minify(files, options);
     } catch (ex) {
-        if (ex instanceof UglifyJS.JS_Parse_Error) {
+        fatal("ERROR: " + ex.message);
+    }
+    var result = UglifyJS.minify(files, options);
+    if (result.error) {
+        var ex = result.error;
+        if (ex.name == "SyntaxError") {
             console.error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
             var col = ex.col;
             var lines = files[ex.filename].split(/\r?\n/);
@@ -210,9 +221,31 @@ function run() {
             console.error(ex.defs);
         }
         fatal("ERROR: " + ex.message);
-    }
-    if (program.output == "spidermonkey") {
-        console.log(JSON.stringify(UglifyJS.parse(result.code).to_mozilla_ast(), null, 2));
+    } else if (program.output == "ast") {
+        console.log(JSON.stringify(result.ast, function(key, value) {
+            if (skip_key(key)) return;
+            if (value instanceof UglifyJS.AST_Token) return;
+            if (value instanceof UglifyJS.Dictionary) return;
+            if (value instanceof UglifyJS.AST_Node) {
+                var result = {
+                    _class: "AST_" + value.TYPE
+                };
+                value.CTOR.PROPS.forEach(function(prop) {
+                    result[prop] = value[prop];
+                });
+                return result;
+            }
+            return value;
+        }, 2));
+    } else if (program.output == "spidermonkey") {
+        console.log(JSON.stringify(UglifyJS.minify(result.code, {
+            compress: false,
+            mangle: false,
+            output: {
+                ast: true,
+                code: false
+            }
+        }).ast.to_mozilla_ast(), null, 2));
     } else if (program.output) {
         fs.writeFileSync(program.output, result.code);
         if (result.map) {
@@ -230,8 +263,8 @@ function run() {
 }
 
 function fatal(message) {
-  console.error(message);
-  process.exit(1);
+    console.error(message);
+    process.exit(1);
 }
 
 // A file glob function that only supports "*" and "?" wildcards in the basename.
@@ -278,9 +311,17 @@ function parse_js(flag, constants) {
     return function(value, options) {
         options = options || {};
         try {
-            UglifyJS.parse(value, {
-                expression: true
-            }).walk(new UglifyJS.TreeWalker(function(node) {
+            UglifyJS.minify(value, {
+                parse: {
+                    expression: true
+                },
+                compress: false,
+                mangle: false,
+                output: {
+                    ast: true,
+                    code: false
+                }
+            }).ast.walk(new UglifyJS.TreeWalker(function(node) {
                 if (node instanceof UglifyJS.AST_Assign) {
                     var name = node.left.print_to_string();
                     var value = node.right;
@@ -337,3 +378,7 @@ function to_cache(key) {
     }
     return cache[key];
 }
+
+function skip_key(key) {
+    return skip_keys.indexOf(key) >= 0;
+}

lib/ast.js

@@ -619,7 +619,7 @@ var AST_UnaryPostfix = DEFNODE("UnaryPostfix", null, {
     $documentation: "Unary postfix expression, i.e. `i++`"
 }, AST_Unary);
 
-var AST_Binary = DEFNODE("Binary", "left operator right", {
+var AST_Binary = DEFNODE("Binary", "operator left right", {
     $documentation: "Binary expression, i.e. `a + b`",
     $propdoc: {
         left: "[AST_Node] left-hand side expression",

lib/minify.js

@@ -108,38 +108,46 @@ function minify(files, options) {
                 toplevel = mangle_properties(toplevel, options.mangle.properties);
             }
         }
-        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) {
-                for (var name in files) {
-                    options.output.source_map.get().setSourceContent(name, files[name]);
+        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) {
+                    for (var name in files) {
+                        options.output.source_map.get().setSourceContent(name, files[name]);
+                    }
                 }
             }
-        }
-        var stream = OutputStream(options.output);
-        toplevel.print(stream);
-        var 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;
+            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 (warnings.length) {
             result.warnings = warnings;
         }
         return result;
+    } catch (ex) {
+        return { error: ex };
     } finally {
         AST_Node.warn_function = warn_function;
     }

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": "3.0.0",
+  "version": "3.0.1",
   "engines": {
     "node": ">=0.8.0"
   },

test/compress/reduce_vars.js

@@ -2440,8 +2440,8 @@ issue_1865: {
         unsafe: true,
     }
     input: {
-        function f(a) {
-            a.b = false;
+        function f(some) {
+            some.thing = false;
         }
         console.log(function() {
             var some = { thing: true };
@@ -2450,8 +2450,8 @@ issue_1865: {
         }());
     }
     expect: {
-        function f(a) {
-            a.b = false;
+        function f(some) {
+            some.thing = false;
         }
         console.log(function() {
             var some = { thing: true };

test/exports.js

@@ -0,0 +1,13 @@
+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/mocha/accessorTokens-1492.js

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

test/mocha/arguments.js

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

test/mocha/cli.js

@@ -19,7 +19,7 @@ describe("bin/uglifyjs", function () {
             eval(stdout);
 
             assert.strictEqual(typeof WrappedUglifyJS, 'object');
-            assert.strictEqual(true, WrappedUglifyJS.parse('foo;') instanceof WrappedUglifyJS.AST_Node);
+            assert.strictEqual(WrappedUglifyJS.minify("foo([true,,2+3]);").code, "foo([!0,,5]);");
 
             done();
         });
@@ -509,4 +509,15 @@ describe("bin/uglifyjs", function () {
             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();
+        });
+    });
 });

test/mocha/comment-filter.js

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

test/mocha/comment.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../../");
+var uglify = require("../node");
 
 describe("Comment", function() {
     it("Should recognize eol of single line comments", function() {

test/mocha/directives.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../../");
+var uglify = require("../node");
 
 describe("Directives", function() {
     it ("Should allow tokenizer to store directives state", function() {

test/mocha/getter-setter.js

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

test/mocha/line-endings.js

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

test/mocha/minify.js

@@ -114,17 +114,18 @@ describe("minify", function() {
             }
         });
         it("Should fail with multiple input and inline source map", function() {
-            assert.throws(function() {
-                Uglify.minify([
-                    read("./test/input/issue-520/input.js"),
-                    read("./test/input/issue-520/output.js")
-                ], {
-                    sourceMap: {
-                        content: "inline",
-                        url: "inline"
-                    }
-                });
+            var result = Uglify.minify([
+                read("./test/input/issue-520/input.js"),
+                read("./test/input/issue-520/output.js")
+            ], {
+                sourceMap: {
+                    content: "inline",
+                    url: "inline"
+                }
             });
+            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");
         });
     });
 
@@ -170,26 +171,14 @@ describe("minify", function() {
     });
 
     describe("JS_Parse_Error", function() {
-        it("should throw syntax error", function() {
-            assert.throws(function() {
-                Uglify.minify("function f(a{}");
-            }, 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.line, 1);
-                assert.strictEqual(err.col, 12);
-                return true;
-            });
+        it("should return syntax error", function() {
+            var result = Uglify.minify("function f(a{}");
+            var err = result.error;
+            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.line, 1);
+            assert.strictEqual(err.col, 12);
         });
     });
-
-    describe("Compressor", function() {
-        it("should be backward compatible with ast.transform(compressor)", function() {
-            var ast = Uglify.parse("function f(a){for(var i=0;i<a;i++)console.log(i)}");
-            ast.figure_out_scope();
-            ast = ast.transform(Uglify.Compressor());
-            assert.strictEqual(ast.print_to_string(), "function f(a){for(var i=0;i<a;i++)console.log(i)}");
-        });
-    })
 });

test/mocha/number-literal.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../../");
+var uglify = require("../node");
 
 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("../../");
+var UglifyJS = require("../node");
 var assert = require("assert");
 
 describe("operator", function() {

test/mocha/spidermonkey.js

@@ -1,6 +1,6 @@
 var assert = require("assert");
 var exec = require("child_process").exec;
-var uglify = require("../../");
+var uglify = require("../node");
 
 describe("spidermonkey export/import sanity test", function() {
     it("should produce a functional build when using --self with spidermonkey", function(done) {
@@ -15,18 +15,7 @@ describe("spidermonkey export/import sanity test", function() {
 
             eval(stdout);
             assert.strictEqual(typeof SpiderUglify, "object");
-
-            var ast = SpiderUglify.parse("foo([true,,2+3]);");
-            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]);");
+            assert.strictEqual(SpiderUglify.minify("foo([true,,2+3]);").code, "foo([!0,,5]);");
 
             done();
         });

test/mocha/string-literal.js

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

test/mocha/with.js

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

test/mozilla-ast.js

@@ -1,7 +1,7 @@
 // Testing UglifyJS <-> SpiderMonkey AST conversion
 // through generative testing.
 
-var UglifyJS = require(".."),
+var UglifyJS = require("./node"),
     escodegen = require("escodegen"),
     esfuzz = require("esfuzz"),
     estraverse = require("estraverse"),

test/node.js

@@ -0,0 +1,6 @@
+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

@@ -1,6 +1,6 @@
 #! /usr/bin/env node
 
-var U = require("../tools/node");
+var U = require("./node");
 var path = require("path");
 var fs = require("fs");
 var assert = require("assert");

test/sourcemaps.js

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

test/ufuzz.js

@@ -12,7 +12,7 @@
         stream._handle.setBlocking(true);
 });
 
-var UglifyJS = require("..");
+var UglifyJS = require("./node");
 var randomBytes = require("crypto").randomBytes;
 var sandbox = require("./sandbox");
 

tools/exports.js

@@ -1,15 +1,4 @@
-exports["Compressor"] = Compressor;
 exports["Dictionary"] = Dictionary;
-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["push_uniq"] = push_uniq;
-exports["string_template"] = string_template;
-exports["tokenizer"] = tokenizer;
-exports["is_identifier"] = is_identifier;
+exports["_push_uniq"] = push_uniq;

tools/node.js

@@ -18,15 +18,19 @@ var FILES = UglifyJS.FILES = [
     return require.resolve(file);
 });
 
-new Function("MOZ_SourceMap", "exports", FILES.map(function(file){
-    return fs.readFileSync(file, "utf8");
-}).join("\n\n"))(
+new Function("MOZ_SourceMap", "exports", function() {
+    var code = FILES.map(function(file) {
+        return fs.readFileSync(file, "utf8");
+    });
+    code.push("exports.describe_ast = " + describe_ast.toString());
+    return code.join("\n\n");
+}())(
     require("source-map"),
     UglifyJS
 );
 
-UglifyJS.describe_ast = function() {
-    var out = UglifyJS.OutputStream({ beautify: true });
+function describe_ast() {
+    var out = OutputStream({ beautify: true });
     function doitem(ctor) {
         out.print("AST_" + ctor.TYPE);
         var props = ctor.SELF_PROPS.filter(function(prop){
@@ -56,6 +60,6 @@ UglifyJS.describe_ast = function() {
             });
         }
     };
-    doitem(UglifyJS.AST_Node);
+    doitem(AST_Node);
     return out + "";
-};
+}