v3.0.23

... by teaching `collapse_vars` some new tricks.

fixes #2187

README.md

@@ -1,11 +1,14 @@
-uglify-es
-=========
+UglifyJS 3
+==========
 
-**uglify-es** is an ECMAScript parser, minifier, compressor and beautifier toolkit for ES6+.
+UglifyJS is a JavaScript parser, minifier, compressor and beautifier toolkit.
 
 #### Note:
-- **`uglify-es` is API/CLI compatible with `uglify-js@3`.**
-- **`uglify-es` is not backwards compatible with `uglify-js@2`.**
+- **`uglify-js@3` has a simplified [API](#api-reference) and [CLI](#command-line-usage) that is not backwards compatible with [`uglify-js@2`](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
+- **Documentation for UglifyJS `2.x` releases can be found [here](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
+- `uglify-js` only supports ECMAScript 5 (ES5).
+- Those wishing to minify
+ES2015+ (ES6+) should use the `npm` package [**uglify-es**](https://github.com/mishoo/UglifyJS2/tree/harmony).
 
 Install
 -------
@@ -15,11 +18,11 @@ First make sure you have installed the latest version of [node.js](http://nodejs
 
 From NPM for use as a command line app:
 
-    npm install uglify-es -g
+    npm install uglify-js -g
 
 From NPM for programmatic use:
 
-    npm install uglify-es
+    npm install uglify-js
 
 # Command line usage
 
@@ -102,7 +105,6 @@ a double dash to prevent input files being used as option arguments:
                                 sequences.
     --config-file <file>        Read `minify()` options from JSON file.
     -d, --define <expr>[=value] Global definitions.
-    --ecma <version>            Specifiy ECMAScript release: 5, 6, 7 or 8.
     --ie8                       Support non-standard Internet Explorer 8.
                                 Equivalent to setting `ie8: true` in `minify()`
                                 for `compress`, `mangle` and `output` options.
@@ -345,7 +347,7 @@ identify mistakes like writing mangled keys to storage.
 Assuming installation via NPM, you can load UglifyJS in your application
 like this:
 ```javascript
-var UglifyJS = require("uglify-es");
+var UglifyJS = require("uglify-js");
 ```
 
 There is a single high level function, **`minify(code, options)`**,
@@ -474,9 +476,6 @@ if (result.error) throw result.error;
 
 ## Minify options
 
-- `ecma` (default `undefined`) - pass `5`, `6`, `7` or `8` to override `parse`,
-  `compress` and `output` options.
-
 - `warnings` (default `false`) — pass `true` to return compressor warnings
   in `result.warnings`. Use the value `"verbose"` for more detailed warnings.
 
@@ -515,6 +514,7 @@ if (result.error) throw result.error;
 
 ```javascript
 {
+    warnings: false,
     parse: {
         // parse options
     },
@@ -534,11 +534,9 @@ if (result.error) throw result.error;
     sourceMap: {
         // source map options
     },
-    ecma: 5, // specify one of: 5, 6, 7 or 8
     nameCache: null, // or specify a name cache object
     toplevel: false,
     ie8: false,
-    warnings: false,
 }
 ```
 
@@ -592,9 +590,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
 ## Parse options
 
 - `bare_returns` (default `false`) -- support top level `return` statements
-- `ecma` (default: `8`) -- specify one of `5`, `6`, `7` or `8`. Note: this setting
-  is not presently enforced except for ES8 optional trailing commas in function
-  parameter lists and calls with `ecma` `8`.
 - `html5_comments` (default `true`)
 - `shebang` (default `true`) -- support `#!command` as the first line
 
@@ -646,10 +641,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
 
 - `evaluate` -- attempt to evaluate constant expressions
 
-- `arrows` (default `true`) -- convert ES5 style anonymous function expressions
-  to arrow functions if permissible by language semantics.
-  Note: `arrows` requires that the `ecma` compress option is set to `6` or greater.
-
 - `booleans` -- various optimizations for boolean context, for example `!!a
   ? b : c → a ? b : c`
 
@@ -738,9 +729,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
   annotation `/*@__PURE__*/` or `/*#__PURE__*/` immediately precedes the call. For
   example: `/*@__PURE__*/foo();`
 
-- `ecma` -- default `5`. Pass `6` or greater to enable `compress` options that
-  will transform ES5 code into smaller ES6+ equivalent forms.
-
 ## Mangle options
 
 - `reserved` (default `[]`). Pass an array of identifiers that should be
@@ -749,8 +737,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
 - `toplevel` (default `false`). Pass `true` to mangle names declared in the
   top level scope.
 
-- `keep_classnames` (default `false`).  Pass `true` to not mangle class names.
-
 - `keep_fnames` (default `false`).  Pass `true` to not mangle function names.
   Useful for code relying on `Function.prototype.name`. See also: the `keep_fnames`
   [compress option](#compress-options).
@@ -758,10 +744,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
 - `eval` (default `false`). Pass `true` to mangle names visible in scopes
   where `eval` or `with` are used.
 
-- `safari10` (default `false`). Pass `true` to work around the Safari 10 loop
-  iterator [bug](https://bugs.webkit.org/show_bug.cgi?id=171041)
-  "Cannot declare a let variable twice".
-
 Examples:
 
 ```javascript
@@ -814,12 +796,6 @@ can pass additional arguments that control the code output:
 - `comments` (default `false`) -- pass `true` or `"all"` to preserve all
   comments, `"some"` to preserve some comments, a regular expression string
   (e.g. `/^!/`) or a function.
-- `ecma` (default `5`) -- set output printing mode. Set `ecma` to `6` or
-  greater to emit shorthand object properties - i.e.: `{a}` instead of `{a: a}`.
-  The `ecma` option will only change the output in direct control of the
-  beautifier. Non-compatible features in the abstract syntax tree will still
-  be output as is. For example: an `ecma` setting of `5` will **not** convert
-  ES6+ code to ES5.
 - `indent_level` (default 4)
 - `indent_start` (default 0) -- prefix all lines by that many spaces
 - `inline_script` (default `false`) -- escape the slash in occurrences of

bin/uglifyjs

@@ -44,7 +44,6 @@ program.option("-o, --output <file>", "Output file (default STDOUT).");
 program.option("--comments [filter]", "Preserve copyright comments in the output.");
 program.option("--config-file <file>", "Read minify() options from JSON file.");
 program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
-program.option("--ecma <version>", "Specifiy ECMAScript release: 5, 6, 7 or 8.");
 program.option("--ie8", "Support non-standard Internet Explorer 8.");
 program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
 program.option("--name-cache <file>", "File to hold mangled name mappings.");
@@ -74,10 +73,6 @@ if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
         options[name] = program[name];
     }
 });
-if ("ecma" in program) {
-    if (program.ecma != (program.ecma | 0)) fatal("ERROR: ecma must be an integer");
-    options.ecma = program.ecma | 0;
-}
 if (program.beautify) {
     options.output = typeof program.beautify == "object" ? program.beautify : {};
     if (!("beautify" in options.output)) {

lib/ast.js

@@ -157,7 +157,7 @@ var AST_SimpleStatement = DEFNODE("SimpleStatement", "body", {
 
 function walk_body(node, visitor) {
     var body = node.body;
-    if (body instanceof AST_Node) {
+    if (body instanceof AST_Statement) {
         body._walk(visitor);
     }
     else for (var i = 0, len = body.length; i < len; i++) {
@@ -284,10 +284,6 @@ var AST_ForIn = DEFNODE("ForIn", "init name object", {
     }
 }, AST_IterationStatement);
 
-var AST_ForOf = DEFNODE("ForOf", null, {
-    $documentation: "A `for ... of` statement",
-}, AST_ForIn);
-
 var AST_With = DEFNODE("With", "expression", {
     $documentation: "A `with` statement",
     $propdoc: {
@@ -315,13 +311,6 @@ var AST_Scope = DEFNODE("Scope", "directives variables functions uses_with uses_
         enclosed: "[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",
         cname: "[integer/S] current index for mangling variables (used internally by the mangler)",
     },
-    get_defun_scope: function () {
-        var self = this;
-        while (self.is_block_scope() && self.parent_scope) {
-            self = self.parent_scope;
-        }
-        return self;
-    }
 }, AST_Block);
 
 var AST_Toplevel = DEFNODE("Toplevel", "globals", {
@@ -342,38 +331,12 @@ var AST_Toplevel = DEFNODE("Toplevel", "globals", {
     }
 }, AST_Scope);
 
-var AST_Expansion = DEFNODE("Expansion", "expression", {
-    $documentation: "An expandible argument, such as ...rest, a splat, such as [1,2,...all], or an expansion in a variable declaration, such as var [first, ...rest] = list",
-    $propdoc: {
-        expression: "[AST_Node] the thing to be expanded"
-    },
-    _walk: function(visitor) {
-        var self = this;
-        return visitor._visit(this, function(){
-            self.expression.walk(visitor);
-        });
-    }
-});
-
-var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments is_generator async", {
+var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments", {
     $documentation: "Base class for functions",
     $propdoc: {
         name: "[AST_SymbolDeclaration?] the name of this function",
-        argnames: "[AST_SymbolFunarg|AST_Destructuring|AST_Expansion|AST_DefaultAssign*] array of function arguments, destructurings, or expanding arguments",
-        uses_arguments: "[boolean/S] tells whether this function accesses the arguments array",
-        is_generator: "[boolean] is this a generator method",
-        async: "[boolean] is this method async",
-    },
-    args_as_names: function () {
-        var out = [];
-        for (var i = 0; i < this.argnames.length; i++) {
-            if (this.argnames[i] instanceof AST_Destructuring) {
-                out = out.concat(this.argnames[i].all_symbols());
-            } else {
-                out.push(this.argnames[i]);
-            }
-        }
-        return out;
+        argnames: "[AST_SymbolFunarg*] array of function arguments",
+        uses_arguments: "[boolean/S] tells whether this function accesses the arguments array"
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
@@ -395,78 +358,10 @@ var AST_Function = DEFNODE("Function", null, {
     $documentation: "A function expression"
 }, AST_Lambda);
 
-var AST_Arrow = DEFNODE("Arrow", null, {
-    $documentation: "An ES6 Arrow function ((a) => b)"
-}, AST_Lambda);
-
 var AST_Defun = DEFNODE("Defun", null, {
     $documentation: "A function definition"
 }, AST_Lambda);
 
-/* -----[ DESTRUCTURING ]----- */
-var AST_Destructuring = DEFNODE("Destructuring", "names is_array", {
-    $documentation: "A destructuring of several names. Used in destructuring assignment and with destructuring function argument names",
-    $propdoc: {
-        "names": "[AST_Node*] Array of properties or elements",
-        "is_array": "[Boolean] Whether the destructuring represents an object or array"
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            this.names.forEach(function(name){
-                name._walk(visitor);
-            });
-        });
-    },
-    all_symbols: function() {
-        var out = [];
-        this.walk(new TreeWalker(function (node) {
-            if (node instanceof AST_Symbol) {
-                out.push(node);
-            }
-            if (node instanceof AST_Expansion) {
-                out.push(node.expression);
-            }
-        }));
-        return out;
-    }
-});
-
-var AST_PrefixedTemplateString = DEFNODE("PrefixedTemplateString", "template_string prefix", {
-    $documentation: "A templatestring with a prefix, such as String.raw`foobarbaz`",
-    $propdoc: {
-        template_string: "[AST_TemplateString] The template string",
-        prefix: "[AST_SymbolRef|AST_PropAccess] The prefix, which can be a symbol such as `foo` or a dotted expression such as `String.raw`."
-    },
-    _walk: function(visitor) {
-        this.prefix._walk(visitor);
-        this.template_string._walk(visitor);
-    }
-})
-
-var AST_TemplateString = DEFNODE("TemplateString", "segments", {
-    $documentation: "A template string literal",
-    $propdoc: {
-        segments: "[AST_Node*] One or more segments, starting with AST_TemplateSegment. AST_Node may follow AST_TemplateSegment, but each AST_Node must be followed by AST_TemplateSegment."
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            this.segments.forEach(function(seg, i){
-                if (i % 2 !== 0) {
-                    seg._walk(visitor);
-                }
-            });
-        });
-    }
-});
-
-var AST_TemplateSegment = DEFNODE("TemplateSegment", "value raw", {
-    $documentation: "A segment of a template string literal",
-    $propdoc: {
-        value: "Content of the segment",
-        raw: "Raw content of the segment"
-    }
-});
-
 /* -----[ JUMPS ]----- */
 
 var AST_Jump = DEFNODE("Jump", null, {
@@ -586,7 +481,7 @@ var AST_Try = DEFNODE("Try", "bcatch bfinally", {
 var AST_Catch = DEFNODE("Catch", "argname", {
     $documentation: "A `catch` node; only makes sense as part of a `try` statement",
     $propdoc: {
-        argname: "[AST_SymbolCatch|AST_Destructuring|AST_Expansion|AST_DefaultAssign] symbol for the exception"
+        argname: "[AST_SymbolCatch] symbol for the exception"
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
@@ -600,10 +495,10 @@ var AST_Finally = DEFNODE("Finally", null, {
     $documentation: "A `finally` node; only makes sense as part of a `try` statement"
 }, AST_Block);
 
-/* -----[ VAR/CONST ]----- */
+/* -----[ VAR ]----- */
 
 var AST_Definitions = DEFNODE("Definitions", "definitions", {
-    $documentation: "Base class for `var` or `const` nodes (variable declarations/initializations)",
+    $documentation: "Base class for `var` nodes (variable declarations/initializations)",
     $propdoc: {
         definitions: "[AST_VarDef*] array of variable definitions"
     },
@@ -621,83 +516,10 @@ var AST_Var = DEFNODE("Var", null, {
     $documentation: "A `var` statement"
 }, AST_Definitions);
 
-var AST_Let = DEFNODE("Let", null, {
-    $documentation: "A `let` statement"
-}, AST_Definitions);
-
-var AST_Const = DEFNODE("Const", null, {
-    $documentation: "A `const` statement"
-}, AST_Definitions);
-
-var AST_NameMapping = DEFNODE("NameMapping", "foreign_name name", {
-    $documentation: "The part of the export/import statement that declare names from a module.",
-    $propdoc: {
-        foreign_name: "[AST_SymbolExportForeign|AST_SymbolImportForeign] The name being exported/imported (as specified in the module)",
-        name: "[AST_SymbolExport|AST_SymbolImport] The name as it is visible to this module."
-    },
-    _walk: function (visitor) {
-        return visitor._visit(this, function() {
-            this.foreign_name._walk(visitor);
-            this.name._walk(visitor);
-        });
-    }
-})
-
-var AST_Import = DEFNODE("Import", "imported_name imported_names module_name", {
-    $documentation: "An `import` statement",
-    $propdoc: {
-        imported_name: "[AST_SymbolImport] The name of the variable holding the module's default export.",
-        imported_names: "[AST_NameMapping*] The names of non-default imported variables",
-        module_name: "[AST_String] String literal describing where this module came from",
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function() {
-            if (this.imported_name) {
-                this.imported_name._walk(visitor);
-            }
-            if (this.imported_names) {
-                this.imported_names.forEach(function(name_import) {
-                    name_import._walk(visitor);
-                });
-            }
-            this.module_name._walk(visitor);
-        });
-    }
-});
-
-var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default exported_names module_name", {
-    $documentation: "An `export` statement",
-    $propdoc: {
-        exported_definition: "[AST_Defun|AST_Definitions|AST_DefClass?] An exported definition",
-        exported_value: "[AST_Node?] An exported value",
-        exported_names: "[AST_NameMapping*?] List of exported names",
-        module_name: "[AST_String?] Name of the file to load exports from",
-        is_default: "[Boolean] Whether this is the default exported value of this module"
-    },
-    _walk: function (visitor) {
-        visitor._visit(this, function () {
-            if (this.exported_definition) {
-                this.exported_definition._walk(visitor);
-            }
-            if (this.exported_value) {
-                this.exported_value._walk(visitor);
-            }
-            if (this.exported_names) {
-                this.exported_names.forEach(function(name_export) {
-                    name_export._walk(visitor);
-                });
-            }
-            if (this.module_name) {
-                this.module_name._walk(visitor);
-            }
-        });
-    }
-}, AST_Statement);
-
 var AST_VarDef = DEFNODE("VarDef", "name value", {
     $documentation: "A variable declaration; only appears in a AST_Definitions node",
     $propdoc: {
-        name: "[AST_SymbolVar|AST_SymbolConst|AST_Destructuring] name of the variable",
+        name: "[AST_SymbolVar] name of the variable",
         value: "[AST_Node?] initializer, or null of there's no initializer"
     },
     _walk: function(visitor) {
@@ -828,10 +650,6 @@ var AST_Assign = DEFNODE("Assign", null, {
     $documentation: "An assignment expression — `a = b + 5`",
 }, AST_Binary);
 
-var AST_DefaultAssign = DEFNODE("DefaultAssign", null, {
-    $documentation: "A default assignment expression like in `(a = 3) => a`"
-}, AST_Binary);
-
 /* -----[ LITERALS ]----- */
 
 var AST_Array = DEFNODE("Array", "elements", {
@@ -867,13 +685,11 @@ var AST_Object = DEFNODE("Object", "properties", {
 var AST_ObjectProperty = DEFNODE("ObjectProperty", "key value", {
     $documentation: "Base class for literal object properties",
     $propdoc: {
-        key: "[string|AST_Node] the property name converted to a string for ObjectKeyVal. For setters, getters and computed property this is an arbitrary AST_Node",
+        key: "[string] the property name converted to a string for ObjectKeyVal.  For setters and getters this is an AST_SymbolAccessor.",
         value: "[AST_Node] property value.  For setters and getters this is an AST_Accessor."
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            if (this.key instanceof AST_Node)
-                this.key._walk(visitor);
             this.value._walk(visitor);
         });
     }
@@ -886,95 +702,35 @@ var AST_ObjectKeyVal = DEFNODE("ObjectKeyVal", "quote", {
     }
 }, AST_ObjectProperty);
 
-var AST_ObjectSetter = DEFNODE("ObjectSetter", "quote static", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] whether this is a static setter (classes only)"
-    },
+var AST_ObjectSetter = DEFNODE("ObjectSetter", null, {
     $documentation: "An object setter property",
 }, AST_ObjectProperty);
 
-var AST_ObjectGetter = DEFNODE("ObjectGetter", "quote static", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] whether this is a static getter (classes only)"
-    },
+var AST_ObjectGetter = DEFNODE("ObjectGetter", null, {
     $documentation: "An object getter property",
 }, AST_ObjectProperty);
 
-var AST_ConciseMethod = DEFNODE("ConciseMethod", "quote static is_generator async", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] is this method static (classes only)",
-        is_generator: "[boolean] is this a generator method",
-        async: "[boolean] is this method async",
-    },
-    $documentation: "An ES6 concise method inside an object or class"
-}, AST_ObjectProperty);
-
-var AST_Class = DEFNODE("Class", "name extends properties", {
-    $propdoc: {
-        name: "[AST_SymbolClass|AST_SymbolDefClass?] optional class name.",
-        extends: "[AST_Node]? optional parent class",
-        properties: "[AST_ObjectProperty*] array of properties"
-    },
-    $documentation: "An ES6 class",
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            if (this.name) {
-                this.name._walk(visitor);
-            }
-            if (this.extends) {
-                this.extends._walk(visitor);
-            }
-            this.properties.forEach(function(prop){
-                prop._walk(visitor);
-            });
-        });
-    },
-}, AST_Scope);
-
-var AST_DefClass = DEFNODE("DefClass", null, {
-    $documentation: "A class definition",
-}, AST_Class);
-
-var AST_ClassExpression = DEFNODE("ClassExpression", null, {
-    $documentation: "A class expression."
-}, AST_Class);
-
 var AST_Symbol = DEFNODE("Symbol", "scope name thedef", {
     $propdoc: {
         name: "[string] name of this symbol",
         scope: "[AST_Scope/S] the current scope (not necessarily the definition scope)",
         thedef: "[SymbolDef/S] the definition of this symbol"
     },
-    $documentation: "Base class for all symbols"
+    $documentation: "Base class for all symbols",
 });
 
-var AST_NewTarget = DEFNODE("NewTarget", null, {
-    $documentation: "A reference to new.target"
-});
+var AST_SymbolAccessor = DEFNODE("SymbolAccessor", null, {
+    $documentation: "The name of a property accessor (setter/getter function)"
+}, AST_Symbol);
 
 var AST_SymbolDeclaration = DEFNODE("SymbolDeclaration", "init", {
-    $documentation: "A declaration symbol (symbol in var/const, function name or argument, symbol in catch)",
+    $documentation: "A declaration symbol (symbol in var, function name or argument, symbol in catch)",
 }, AST_Symbol);
 
 var AST_SymbolVar = DEFNODE("SymbolVar", null, {
     $documentation: "Symbol defining a variable",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolBlockDeclaration = DEFNODE("SymbolBlockDeclaration", null, {
-    $documentation: "Base class for block-scoped declaration symbols"
-}, AST_SymbolDeclaration);
-
-var AST_SymbolConst = DEFNODE("SymbolConst", null, {
-    $documentation: "A constant declaration"
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolLet = DEFNODE("SymbolLet", null, {
-    $documentation: "A block-scoped `let` declaration"
-}, AST_SymbolBlockDeclaration);
-
 var AST_SymbolFunarg = DEFNODE("SymbolFunarg", null, {
     $documentation: "Symbol naming a function argument",
 }, AST_SymbolVar);
@@ -983,33 +739,13 @@ var AST_SymbolDefun = DEFNODE("SymbolDefun", null, {
     $documentation: "Symbol defining a function",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolMethod = DEFNODE("SymbolMethod", null, {
-    $documentation: "Symbol in an object defining a method",
-}, AST_Symbol);
-
 var AST_SymbolLambda = DEFNODE("SymbolLambda", null, {
     $documentation: "Symbol naming a function expression",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolDefClass = DEFNODE("SymbolDefClass", null, {
-    $documentation: "Symbol naming a class's name in a class declaration. Lexically scoped to its containing scope, and accessible within the class."
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolClass = DEFNODE("SymbolClass", null, {
-    $documentation: "Symbol naming a class's name. Lexically scoped to the class."
-}, AST_SymbolDeclaration);
-
 var AST_SymbolCatch = DEFNODE("SymbolCatch", null, {
     $documentation: "Symbol naming the exception in catch",
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolImport = DEFNODE("SymbolImport", null, {
-    $documentation: "Symbol referring to an imported name",
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolImportForeign = DEFNODE("SymbolImportForeign", null, {
-    $documentation: "A symbol imported from a module, but it is defined in the other module, and its real name is irrelevant for this module's purposes",
-}, AST_Symbol);
+}, AST_SymbolDeclaration);
 
 var AST_Label = DEFNODE("Label", "references", {
     $documentation: "Symbol naming a label (declaration)",
@@ -1026,14 +762,6 @@ var AST_SymbolRef = DEFNODE("SymbolRef", null, {
     $documentation: "Reference to some symbol (not definition/declaration)",
 }, AST_Symbol);
 
-var AST_SymbolExport = DEFNODE("SymbolExport", null, {
-    $documentation: "Symbol referring to a name to export",
-}, AST_SymbolRef);
-
-var AST_SymbolExportForeign = DEFNODE("SymbolExportForeign", null, {
-    $documentation: "A symbol exported from this module, but it is used in the other module, and its real name is irrelevant for this module's purposes",
-}, AST_Symbol);
-
 var AST_LabelRef = DEFNODE("LabelRef", null, {
     $documentation: "Reference to a label symbol",
 }, AST_Symbol);
@@ -1042,10 +770,6 @@ var AST_This = DEFNODE("This", null, {
     $documentation: "The `this` symbol",
 }, AST_Symbol);
 
-var AST_Super = DEFNODE("Super", null, {
-    $documentation: "The `super` symbol",
-}, AST_Symbol);
-
 var AST_Constant = DEFNODE("Constant", null, {
     $documentation: "Base class for all constants",
     getValue: function() {
@@ -1119,31 +843,6 @@ var AST_True = DEFNODE("True", null, {
     value: true
 }, AST_Boolean);
 
-var AST_Await = DEFNODE("Await", "expression", {
-    $documentation: "An `await` statement",
-    $propdoc: {
-        expression: "[AST_Node] the mandatory expression being awaited",
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            this.expression._walk(visitor);
-        });
-    }
-});
-
-var AST_Yield = DEFNODE("Yield", "expression is_star", {
-    $documentation: "A `yield` statement",
-    $propdoc: {
-        expression: "[AST_Node?] the value returned or thrown by this statement; could be null (representing undefined) but only when is_star is set to false",
-        is_star: "[Boolean] Whether this is a yield or yield* statement"
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, this.expression && function(){
-            this.expression._walk(visitor);
-        });
-    }
-});
-
 /* -----[ TreeWalker ]----- */
 
 function TreeWalker(callback) {
@@ -1171,17 +870,12 @@ TreeWalker.prototype = {
             this.directives = Object.create(this.directives);
         } else if (node instanceof AST_Directive && !this.directives[node.value]) {
             this.directives[node.value] = node;
-        } else if (node instanceof AST_Class) {
-            this.directives = Object.create(this.directives);
-            if (!this.directives["use strict"]) {
-                this.directives["use strict"] = node;
-            }
         }
         this.stack.push(node);
     },
     pop: function(node) {
         this.stack.pop();
-        if (node instanceof AST_Lambda || node instanceof AST_Class) {
+        if (node instanceof AST_Lambda) {
             this.directives = Object.getPrototypeOf(this.directives);
         }
     },
@@ -1199,7 +893,7 @@ TreeWalker.prototype = {
         var dir = this.directives[type];
         if (dir) return dir;
         var node = this.stack[this.stack.length - 1];
-        if (node instanceof AST_Scope && node.body) {
+        if (node instanceof AST_Scope) {
             for (var i = 0; i < node.body.length; ++i) {
                 var st = node.body[i];
                 if (!(st instanceof AST_Directive)) break;

lib/minify.js

@@ -49,7 +49,6 @@ function minify(files, options) {
     try {
         options = defaults(options, {
             compress: {},
-            ecma: undefined,
             ie8: false,
             keep_fnames: false,
             mangle: {},
@@ -65,7 +64,6 @@ function minify(files, options) {
         var timings = options.timings && {
             start: Date.now()
         };
-        set_shorthand("ecma", options, [ "parse", "compress", "output" ]);
         set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
         set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
         set_shorthand("toplevel", options, [ "compress", "mangle" ]);
@@ -75,11 +73,9 @@ function minify(files, options) {
                 cache: options.nameCache && (options.nameCache.vars || {}),
                 eval: false,
                 ie8: false,
-                keep_classnames: false,
                 keep_fnames: false,
                 properties: false,
                 reserved: [],
-                safari10: false,
                 toplevel: false,
             }, true);
             if (options.nameCache && options.mangle.properties) {

lib/mozilla-ast.js

@@ -118,7 +118,7 @@
                 value    : from_moz(M.value)
             };
             if (M.kind == "init") return new AST_ObjectKeyVal(args);
-            args.key = new AST_SymbolMethod({
+            args.key = new AST_SymbolAccessor({
                 name: args.key
             });
             args.value = new AST_Accessor(args.value);
@@ -168,7 +168,7 @@
             });
         },
         VariableDeclaration: function(M) {
-            return new (M.kind === "const" ? AST_Const : AST_Var)({
+            return new 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 ? (p.kind == "const" ? AST_SymbolConst : AST_SymbolVar)
+                        : p.type == "VariableDeclarator" && p.id === M ? 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
@@ -324,7 +324,7 @@
     def_to_moz(AST_Definitions, function To_Moz_VariableDeclaration(M) {
         return {
             type: "VariableDeclaration",
-            kind: M instanceof AST_Const ? "const" : "var",
+            kind: "var",
             declarations: M.definitions.map(to_moz)
         };
     });
@@ -381,7 +381,7 @@
     def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
         var key = {
             type: "Literal",
-            value: M.key instanceof AST_SymbolMethod ? M.key.name : M.key
+            value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key
         };
         var kind;
         if (M instanceof AST_ObjectKeyVal) {

lib/output.js

@@ -54,11 +54,9 @@ function OutputStream(options) {
 
     options = defaults(options, {
         ascii_only       : false,
-        ascii_identifiers: undefined,
         beautify         : false,
         bracketize       : false,
         comments         : false,
-        ecma             : 5,
         ie8              : false,
         indent_level     : 4,
         indent_start     : 0,
@@ -71,19 +69,12 @@ function OutputStream(options) {
         quote_style      : 0,
         semicolons       : true,
         shebang          : true,
-        shorthand        : undefined,
         source_map       : null,
         webkit           : false,
         width            : 80,
         wrap_iife        : false,
     }, true);
 
-    if (typeof options.ascii_identifiers === 'undefined')
-        options.ascii_identifiers = options.ascii_only;
-
-    if (options.shorthand === undefined)
-        options.shorthand = options.ecma > 5;
-
     // Convert comment option to RegExp if neccessary and set up comments filter
     var comment_filter = return_false; // Default case, throw all comments away
     if (options.comments) {
@@ -119,19 +110,9 @@ function OutputStream(options) {
     var OUTPUT = "";
 
     function to_ascii(str, identifier) {
-        return str.replace(/[\ud800-\udbff][\udc00-\udfff]|[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
-            var code = get_full_char_code(ch, 0).toString(16);
-
-            if ((identifier && code.length === 1 && options.ecma >= 6) || code.length > 4) {
-                if (options.ecma < 6) {
-                    if (identifier) {
-                        return ch; // no \u{} support
-                    }
-                    return "\\u" + ch.charCodeAt(0).toString(16) + "\\u"
-                        + ch.charCodeAt(1).toString(16);
-                }
-                return "\\u{" + code + "}";
-            } else if (code.length <= 2 && !identifier) {
+        return str.replace(/[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
+            var code = ch.charCodeAt(0).toString(16);
+            if (code.length <= 2 && !identifier) {
                 while (code.length < 2) code = "0" + code;
                 return "\\x" + code;
             } else {
@@ -159,7 +140,7 @@ function OutputStream(options) {
               case "\u2029": return "\\u2029";
               case "\ufeff": return "\\ufeff";
               case "\0":
-                  return /[0-7]/.test(get_full_char(str, i+1)) ? "\\x00" : "\\0";
+                  return /[0-7]/.test(str.charAt(i+1)) ? "\\x00" : "\\0";
             }
             return s;
         });
@@ -169,11 +150,7 @@ function OutputStream(options) {
         function quote_double() {
             return '"' + str.replace(/\x22/g, '\\"') + '"';
         }
-        function quote_template() {
-            return '`' + str.replace(/`/g, '\\`') + '`';
-        }
         if (options.ascii_only) str = to_ascii(str);
-        if (quote === "`") return quote_template();
         switch (options.quote_style) {
           case 1:
             return quote_single();
@@ -198,7 +175,7 @@ function OutputStream(options) {
 
     function make_name(name) {
         name = name.toString();
-        if (options.ascii_identifiers)
+        if (options.ascii_only)
             name = to_ascii(name, true);
         return name;
     };
@@ -269,8 +246,8 @@ function OutputStream(options) {
 
     function print(str) {
         str = String(str);
-        var ch = get_full_char(str, 0);
-        var prev = get_full_char(last, last.length - 1);
+        var ch = str.charAt(0);
+        var prev = last.charAt(last.length - 1);
         if (might_need_semicolon) {
             might_need_semicolon = false;
 
@@ -346,10 +323,6 @@ function OutputStream(options) {
         last = str;
     };
 
-    var star = function(){
-        print("*");
-    }
-
     var space = options.beautify ? function() {
         print(" ");
     } : function() {
@@ -454,7 +427,6 @@ function OutputStream(options) {
         should_break    : function() { return options.width && this.current_width() >= options.width },
         newline         : newline,
         print           : print,
-        star            : star,
         space           : space,
         comma           : comma,
         colon           : colon,
@@ -474,10 +446,6 @@ function OutputStream(options) {
             }
             print(encoded);
         },
-        print_template_string_chars: function(str) {
-            var encoded = encode_string(str, '`').replace(/\${/g, "\\${");
-            return print(encoded.substr(1, encoded.length - 2));
-        },
         encode_string   : encode_string,
         next_indent     : next_indent,
         with_indent     : with_indent,
@@ -646,15 +614,6 @@ function OutputStream(options) {
         return false;
     });
 
-    PARENS(AST_Arrow, function(output){
-        var p = output.parent();
-        return p instanceof AST_PropAccess && p.expression === this;
-    });
-
-    PARENS(AST_ClassExpression, function(output){
-        return output.parent() instanceof AST_SimpleStatement;
-    });
-
     // same goes for an object literal, because otherwise it would be
     // interpreted as a block of code.
     PARENS(AST_Object, function(output){
@@ -662,18 +621,6 @@ function OutputStream(options) {
     });
 
     PARENS(AST_Unary, function(output){
-        var p = output.parent();
-        return p instanceof AST_PropAccess && p.expression === this
-            || p instanceof AST_Call && p.expression === this
-            || p instanceof AST_Binary
-                && p.operator === "**"
-                && this instanceof AST_UnaryPrefix
-                && p.left === this
-                && this.operator !== "++"
-                && this.operator !== "--";
-    });
-
-    PARENS(AST_Await, function(output){
         var p = output.parent();
         return p instanceof AST_PropAccess && p.expression === this
             || p instanceof AST_Call && p.expression === this;
@@ -681,17 +628,15 @@ function OutputStream(options) {
 
     PARENS(AST_Sequence, 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)
-            || p instanceof AST_Binary                        // 1 + (2, 3) + 4 ==> 8
-            || p instanceof AST_VarDef                        // var a = (1, 2), b = a + a; ==> b == 4
-            || p instanceof AST_PropAccess                    // (1, {foo:2}).foo or (1, {foo:2})["foo"] ==> 2
-            || p instanceof AST_Array                         // [ 1, (2, 3), 4 ] ==> [ 1, 3, 4 ]
-            || p instanceof AST_ObjectProperty                // { foo: (1, 2) }.foo ==> 2
-            || p instanceof AST_Conditional                   /* (false, true) ? (a = 10, b = 20) : (c = 30)
-                                                               * ==> 20 (side effect, set a := 10 and b := 20) */
-            || p instanceof AST_Arrow                         // x => (x, x)
-            || p instanceof AST_DefaultAssign                 // x => (x = (0, function(){}))
+        return p instanceof AST_Call             // (foo, bar)() or foo(1, (2, 3), 4)
+            || p instanceof AST_Unary            // !(foo, bar, baz)
+            || p instanceof AST_Binary           // 1 + (2, 3) + 4 ==> 8
+            || p instanceof AST_VarDef           // var a = (1, 2), b = a + a; ==> b == 4
+            || p instanceof AST_PropAccess       // (1, {foo:2}).foo or (1, {foo:2})["foo"] ==> 2
+            || p instanceof AST_Array            // [ 1, (2, 3), 4 ] ==> [ 1, 3, 4 ]
+            || p instanceof AST_ObjectProperty   // { foo: (1, 2) }.foo ==> 2
+            || p instanceof AST_Conditional      /* (false, true) ? (a = 10, b = 20) : (c = 30)
+                                                  * ==> 20 (side effect, set a := 10 and b := 20) */
         ;
     });
 
@@ -718,24 +663,6 @@ function OutputStream(options) {
         }
     });
 
-    PARENS(AST_Yield, function(output){
-        var p = output.parent();
-        // (yield 1) + (yield 2)
-        // a = yield 3
-        if (p instanceof AST_Binary && p.operator !== "=")
-            return true;
-        // (yield 1) ? yield 2 : yield 3
-        if (p instanceof AST_Conditional && p.condition === this)
-            return true;
-        // -(yield 4)
-        if (p instanceof AST_Unary)
-            return true;
-        // (yield x).foo
-        // (yield x)['foo']
-        if (p instanceof AST_PropAccess && p.expression === this)
-            return true;
-    });
-
     PARENS(AST_PropAccess, function(output){
         var p = output.parent();
         if (p instanceof AST_New && p.expression === this) {
@@ -805,9 +732,6 @@ function OutputStream(options) {
         // (a = foo)["prop"] —or— (a = foo).prop
         if (p instanceof AST_PropAccess && p.expression === this)
             return true;
-        // ({a, b} = {a: 1, b: 2}), a destructuring assignment
-        if (this instanceof AST_Assign && this.left instanceof AST_Destructuring && this.left.is_array === false)
-            return true;
     });
 
     /* -----[ PRINTERS ]----- */
@@ -816,26 +740,6 @@ function OutputStream(options) {
         output.print_string(self.value, self.quote);
         output.semicolon();
     });
-
-    DEFPRINT(AST_Expansion, function (self, output) {
-        output.print('...');
-        self.expression.print(output);
-    });
-
-    DEFPRINT(AST_Destructuring, function (self, output) {
-        output.print(self.is_array ? "[" : "{");
-        var len = self.names.length;
-        self.names.forEach(function (name, i) {
-            if (i > 0) output.comma();
-            name.print(output);
-            // If the final element is a hole, we need to make sure it
-            // doesn't look like a trailing comma, by inserting an actual
-            // trailing comma.
-            if (i == len - 1 && name instanceof AST_Hole) output.comma();
-        });
-        output.print(self.is_array ? "]" : "}");
-    });
-
     DEFPRINT(AST_Debugger, function(self, output){
         output.print("debugger");
         output.semicolon();
@@ -960,11 +864,7 @@ function OutputStream(options) {
         output.with_parens(function(){
             self.init.print(output);
             output.space();
-            if (self instanceof AST_ForOf) {
-                output.print("of");
-            } else {
-                output.print("in");
-            }
+            output.print("in");
             output.space();
             self.object.print(output);
         });
@@ -985,24 +885,11 @@ function OutputStream(options) {
     AST_Lambda.DEFMETHOD("_do_print", function(output, nokeyword){
         var self = this;
         if (!nokeyword) {
-            if (self.async) {
-                output.print("async");
-                output.space();
-            }
             output.print("function");
-            if (self.is_generator) {
-                output.star();
-            }
-            if (self.name) {
-                output.space();
-            }
         }
-        if (self.name instanceof AST_Symbol) {
+        if (self.name) {
+            output.space();
             self.name.print(output);
-        } else if (nokeyword && self.name instanceof AST_Node) {
-            output.with_square(function() {
-                self.name.print(output); // Computed method name
-            });
         }
         output.with_parens(function(){
             self.argnames.forEach(function(arg, i){
@@ -1017,60 +904,6 @@ function OutputStream(options) {
         self._do_print(output);
     });
 
-    DEFPRINT(AST_PrefixedTemplateString, function(self, output) {
-        self.prefix.print(output);
-        self.template_string.print(output);
-    });
-    DEFPRINT(AST_TemplateString, function(self, output) {
-        var is_tagged = output.parent() instanceof AST_PrefixedTemplateString;
-
-        output.print("`");
-        for (var i = 0; i < self.segments.length; i++) {
-            if (!(self.segments[i] instanceof AST_TemplateSegment)) {
-                output.print("${");
-                self.segments[i].print(output);
-                output.print("}");
-            } else if (is_tagged) {
-                output.print(self.segments[i].raw);
-            } else {
-                output.print_template_string_chars(self.segments[i].value);
-            }
-        }
-        output.print("`");
-    });
-
-    AST_Arrow.DEFMETHOD("_do_print", function(output){
-        var self = this;
-        var parent = output.parent();
-        var needs_parens = parent instanceof AST_Binary ||
-            parent instanceof AST_Unary ||
-            (parent instanceof AST_Call && self === parent.expression);
-        if (needs_parens) { output.print("(") }
-        if (self.async) {
-            output.print("async");
-            output.space();
-        }
-        if (self.argnames.length === 1 && self.argnames[0] instanceof AST_Symbol) {
-            self.argnames[0].print(output);
-        } else {
-            output.with_parens(function(){
-                self.argnames.forEach(function(arg, i){
-                    if (i) output.comma();
-                    arg.print(output);
-                });
-            });
-        }
-        output.space();
-        output.print('=>');
-        output.space();
-        if (self.body instanceof AST_Node) {
-            self.body.print(output);
-        } else {
-            print_bracketed(self.body, output);
-        }
-        if (needs_parens) { output.print(")") }
-    });
-
     /* -----[ exits ]----- */
     AST_Exit.DEFMETHOD("_do_print", function(output, kind){
         output.print(kind);
@@ -1087,33 +920,6 @@ function OutputStream(options) {
         self._do_print(output, "throw");
     });
 
-    /* -----[ yield ]----- */
-
-    DEFPRINT(AST_Yield, function(self, output){
-        var star = self.is_star ? "*" : "";
-        output.print("yield" + star);
-        if (self.expression) {
-            output.space();
-            self.expression.print(output);
-        }
-    });
-
-    DEFPRINT(AST_Await, function(self, output){
-        output.print("await");
-        output.space();
-        var e = self.expression;
-        var parens = !(
-               e instanceof AST_Call
-            || e instanceof AST_SymbolRef
-            || e instanceof AST_PropAccess
-            || e instanceof AST_Unary
-            || e instanceof AST_Constant
-        );
-        if (parens) output.print("(");
-        self.expression.print(output);
-        if (parens) output.print(")");
-    });
-
     /* -----[ loop control ]----- */
     AST_LoopControl.DEFMETHOD("_do_print", function(output, kind){
         output.print(kind);
@@ -1262,111 +1068,9 @@ function OutputStream(options) {
         if (!avoid_semicolon)
             output.semicolon();
     });
-    DEFPRINT(AST_Let, function(self, output){
-        self._do_print(output, "let");
-    });
     DEFPRINT(AST_Var, function(self, output){
         self._do_print(output, "var");
     });
-    DEFPRINT(AST_Const, function(self, output){
-        self._do_print(output, "const");
-    });
-    DEFPRINT(AST_Import, function(self, output) {
-        output.print("import");
-        output.space();
-        if (self.imported_name) {
-            self.imported_name.print(output);
-        }
-        if (self.imported_name && self.imported_names) {
-            output.print(",");
-            output.space();
-        }
-        if (self.imported_names) {
-            if (self.imported_names.length === 1 && self.imported_names[0].foreign_name.name === "*") {
-                self.imported_names[0].print(output);
-            } else {
-                output.print("{");
-                self.imported_names.forEach(function (name_import, i) {
-                    output.space();
-                    name_import.print(output);
-                    if (i < self.imported_names.length - 1) {
-                        output.print(",");
-                    }
-                });
-                output.space();
-                output.print("}");
-            }
-        }
-        if (self.imported_name || self.imported_names) {
-            output.space();
-            output.print("from")
-            output.space();
-        }
-        self.module_name.print(output);
-        output.semicolon();
-    });
-
-    DEFPRINT(AST_NameMapping, function(self, output) {
-        var is_import = output.parent() instanceof AST_Import;
-        var definition = self.name.definition();
-        var names_are_different =
-            (definition && definition.mangled_name || self.name.name) !==
-            self.foreign_name.name;
-        if (names_are_different) {
-            if (is_import) {
-                output.print(self.foreign_name.name);
-            } else {
-                self.name.print(output);
-            }
-            output.space();
-            output.print("as");
-            output.space();
-            if (is_import) {
-                self.name.print(output);
-            } else {
-                output.print(self.foreign_name.name);
-            }
-        } else {
-            self.name.print(output);
-        }
-    });
-
-    DEFPRINT(AST_Export, function(self, output) {
-        output.print("export");
-        output.space();
-        if (self.is_default) {
-            output.print("default");
-            output.space();
-        }
-        if (self.exported_names) {
-            if (self.exported_names.length === 1 && self.exported_names[0].name.name === "*") {
-                self.exported_names[0].print(output);
-            } else {
-                output.print("{");
-                self.exported_names.forEach(function(name_export, i) {
-                    output.space();
-                    name_export.print(output);
-                    if (i < self.exported_names.length - 1) {
-                        output.print(",");
-                    }
-                });
-                output.space();
-                output.print("}");
-            }
-        }
-        else if (self.exported_value) {
-            self.exported_value.print(output);
-        } else if (self.exported_definition) {
-            self.exported_definition.print(output);
-        }
-        if (self.module_name) {
-            output.space();
-            output.print("from");
-            output.space();
-            self.module_name.print(output);
-        }
-        output.semicolon();
-    });
 
     function parenthesize_for_noin(node, output, noin) {
         if (!noin) node.print(output);
@@ -1539,48 +1243,6 @@ function OutputStream(options) {
         });
         else output.print("{}");
     });
-    DEFPRINT(AST_Class, function(self, output){
-        output.print("class");
-        output.space();
-        if (self.name) {
-            self.name.print(output);
-            output.space();
-        }
-        if (self.extends) {
-            var parens = (
-                   !(self.extends instanceof AST_SymbolRef)
-                && !(self.extends instanceof AST_PropAccess)
-                && !(self.extends instanceof AST_ClassExpression)
-                && !(self.extends instanceof AST_Function)
-            );
-            output.print("extends");
-            if (parens) {
-                output.print("(");
-            } else {
-                output.space();
-            }
-            self.extends.print(output);
-            if (parens) {
-                output.print(")");
-            } else {
-                output.space();
-            }
-        }
-        if (self.properties.length > 0) output.with_block(function(){
-            self.properties.forEach(function(prop, i){
-                if (i) {
-                    output.newline();
-                }
-                output.indent();
-                prop.print(output);
-            });
-            output.newline();
-        });
-        else output.print("{}");
-    });
-    DEFPRINT(AST_NewTarget, function(self, output) {
-        output.print("new.target");
-    });
 
     function print_property_name(key, quote, output) {
         if (output.option("quote_keys")) {
@@ -1602,60 +1264,15 @@ function OutputStream(options) {
     }
 
     DEFPRINT(AST_ObjectKeyVal, function(self, output){
-        function get_name(self) {
-            var def = self.definition();
-            return def ? def.mangled_name || def.name : self.name;
-        }
-
-        var allowShortHand = output.option("shorthand");
-        if (allowShortHand &&
-            self.value instanceof AST_Symbol &&
-            is_identifier_string(self.key) &&
-            get_name(self.value) === self.key
-        ) {
-            print_property_name(self.key, self.quote, output);
-
-        } else if (allowShortHand &&
-            self.value instanceof AST_DefaultAssign &&
-            self.value.left instanceof AST_Symbol &&
-            is_identifier_string(self.key) &&
-            get_name(self.value.left) === self.key
-        ) {
-            print_property_name(self.key, self.quote, output);
-            output.space();
-            output.print("=");
-            output.space();
-            self.value.right.print(output);
-        } else {
-            if (!(self.key instanceof AST_Node)) {
-                print_property_name(self.key, self.quote, output);
-            } else {
-                output.with_square(function() {
-                    self.key.print(output);
-                });
-            }
-            output.colon();
-            self.value.print(output);
-        }
+        print_property_name(self.key, self.quote, output);
+        output.colon();
+        self.value.print(output);
     });
     AST_ObjectProperty.DEFMETHOD("_print_getter_setter", function(type, output) {
-        var self = this;
-        if (self.static) {
-            output.print("static");
-            output.space();
-        }
-        if (type) {
-            output.print(type);
-            output.space();
-        }
-        if (self.key instanceof AST_SymbolMethod) {
-            print_property_name(self.key.name, self.quote, output);
-        } else {
-            output.with_square(function() {
-                self.key.print(output);
-            });
-        }
-        self.value._do_print(output, true);
+        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);
@@ -1663,26 +1280,14 @@ function OutputStream(options) {
     DEFPRINT(AST_ObjectGetter, function(self, output){
         self._print_getter_setter("get", output);
     });
-    DEFPRINT(AST_ConciseMethod, function(self, output){
-        self._print_getter_setter(self.is_generator && "*" || self.async && "async", output);
-    });
-    AST_Symbol.DEFMETHOD("_do_print", function(output){
-        var def = this.definition();
-        output.print_name(def ? def.mangled_name || def.name : this.name);
-    });
-    DEFPRINT(AST_Symbol, function (self, output) {
-        self._do_print(output);
-    });
-    DEFPRINT(AST_SymbolDeclaration, function(self, output){
-        self._do_print(output);
+    DEFPRINT(AST_Symbol, function(self, output){
+        var def = self.definition();
+        output.print_name(def ? def.mangled_name || def.name : self.name);
     });
     DEFPRINT(AST_Hole, noop);
     DEFPRINT(AST_This, function(self, output){
         output.print("this");
     });
-    DEFPRINT(AST_Super, function(self, output){
-        output.print("super");
-    });
     DEFPRINT(AST_Constant, function(self, output){
         output.print(self.getValue());
     });

lib/propmangle.js

@@ -44,16 +44,6 @@
 "use strict";
 
 function find_builtins(reserved) {
-
-    // Compatibility fix for some standard defined globals not defined on every js environment
-    var new_globals = ["Symbol", "Map", "Promise", "Proxy", "Reflect", "Set", "WeakMap", "WeakSet"];
-    var objects = {};
-    var global_ref = typeof global === "object" ? global : self;
-
-    new_globals.forEach(function (new_global) {
-        objects[new_global] = global_ref[new_global] || new Function();
-    });
-
     // NaN will be included due to Number.NaN
     [
         "null",
@@ -65,15 +55,7 @@ function find_builtins(reserved) {
     ].forEach(add);
     [ Object, Array, Function, Number,
       String, Boolean, Error, Math,
-      Date, RegExp, objects.Symbol, ArrayBuffer,
-      DataView, decodeURI, decodeURIComponent,
-      encodeURI, encodeURIComponent, eval, EvalError,
-      Float32Array, Float64Array, Int8Array, Int16Array,
-      Int32Array, isFinite, isNaN, JSON, objects.Map, parseFloat,
-      parseInt, objects.Promise, objects.Proxy, RangeError, ReferenceError,
-      objects.Reflect, objects.Set, SyntaxError, TypeError, Uint8Array,
-      Uint8ClampedArray, Uint16Array, Uint32Array, URIError,
-      objects.WeakMap, objects.WeakSet
+      Date, RegExp
     ].forEach(function(ctor){
         Object.getOwnPropertyNames(ctor).map(add);
         if (ctor.prototype) {
@@ -139,9 +121,6 @@ function mangle_properties(ast, options) {
         else if (node instanceof AST_Sub) {
             addStrings(node.property, keep_quoted);
         }
-        else if (node instanceof AST_ConciseMethod) {
-            add(node.name.name);
-        }
     }));
 
     // step 2: transform the tree, renaming properties
@@ -161,11 +140,6 @@ function mangle_properties(ast, options) {
             if (!keep_quoted)
                 node.property = mangleStrings(node.property);
         }
-        else if (node instanceof AST_ConciseMethod) {
-            if (should_mangle(node.name.name)) {
-                node.name.name = mangle(node.name.name);
-            }
-        }
         // else if (node instanceof AST_String) {
         //     if (should_mangle(node.value)) {
         //         AST_Node.warn(

lib/scope.js

@@ -49,7 +49,6 @@ function SymbolDef(scope, index, orig) {
     this.scope = scope;
     this.references = [];
     this.global = false;
-    this.export = false;
     this.mangled_name = null;
     this.undeclared = false;
     this.index = index;
@@ -63,16 +62,11 @@ SymbolDef.prototype = {
         if (!options) options = {};
 
         return (this.global && !options.toplevel)
-            || this.export
             || this.undeclared
             || (!options.eval && (this.scope.uses_eval || this.scope.uses_with))
             || (options.keep_fnames
                 && (this.orig[0] instanceof AST_SymbolLambda
-                    || this.orig[0] instanceof AST_SymbolDefun))
-            || this.orig[0] instanceof AST_SymbolMethod
-            || (options.keep_classnames
-                && (this.orig[0] instanceof AST_SymbolClass
-                    || this.orig[0] instanceof AST_SymbolDefClass));
+                    || this.orig[0] instanceof AST_SymbolDefun));
     },
     mangle: function(options) {
         var cache = options.cache && options.cache.props;
@@ -103,7 +97,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     options = defaults(options, {
         cache: null,
         ie8: false,
-        safari10: false,
     });
 
     // pass 1: setup scope chaining and handle definitions
@@ -111,33 +104,15 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     var scope = self.parent_scope = null;
     var labels = new Dictionary();
     var defun = null;
-    var in_destructuring = null;
-    var for_scopes = [];
     var tw = new TreeWalker(function(node, descend){
-        if (node.is_block_scope()) {
+        if (node instanceof AST_Catch) {
             var save_scope = scope;
             scope = new AST_Scope(node);
             scope.init_scope_vars(save_scope);
-            if (!(node instanceof AST_Scope)) {
-                scope.uses_with = save_scope.uses_with;
-                scope.uses_eval = save_scope.uses_eval;
-                scope.directives = save_scope.directives;
-            }
-            if (options.safari10) {
-                if (node instanceof AST_For || node instanceof AST_ForIn) {
-                    for_scopes.push(scope);
-                }
-            }
             descend();
             scope = save_scope;
             return true;
         }
-        if (node instanceof AST_Destructuring) {
-            in_destructuring = node;  // These don't nest
-            descend();
-            in_destructuring = null;
-            return true;
-        }
         if (node instanceof AST_Scope) {
             node.init_scope_vars(scope);
             var save_scope = scope;
@@ -182,29 +157,10 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             // scope when we encounter the AST_Defun node (which is
             // instanceof AST_Scope) but we get to the symbol a bit
             // later.
-            var parent_lambda = defun.parent_scope;
-            while (parent_lambda.is_block_scope()) {
-                parent_lambda = parent_lambda.parent_scope;
-            }
-            mark_export((node.scope = parent_lambda).def_function(node), 1);
+            (node.scope = defun.parent_scope).def_function(node);
         }
-        else if (node instanceof AST_SymbolClass) {
-            mark_export(defun.def_variable(node), 1);
-        }
-        else if (node instanceof AST_SymbolImport) {
-            scope.def_variable(node);
-        }
-        else if (node instanceof AST_SymbolDefClass) {
-            // This deals with the name of the class being available
-            // inside the class.
-            mark_export((node.scope = defun.parent_scope).def_function(node), 1);
-        }
-        else if (node instanceof AST_SymbolVar
-            || node instanceof AST_SymbolLet
-            || node instanceof AST_SymbolConst) {
-            var def = ((node instanceof AST_SymbolBlockDeclaration) ? scope : defun).def_variable(node);
-            if (!(node instanceof AST_SymbolFunarg)) mark_export(def, 2);
-            def.destructuring = in_destructuring;
+        else if (node instanceof AST_SymbolVar) {
+            defun.def_variable(node);
             if (defun !== scope) {
                 node.mark_enclosed(options);
                 var def = scope.find_variable(node);
@@ -226,26 +182,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             }));
             node.thedef = sym;
         }
-        if (!(scope instanceof AST_Toplevel) && (node instanceof AST_Export || node instanceof AST_Import)) {
-            js_error(
-                node.TYPE + " statement may only appear at top level",
-                node.start.file,
-                node.start.line,
-                node.start.col,
-                node.start.pos
-            );
-        }
-
-        function mark_export(def, level) {
-            if (in_destructuring) {
-                var i = 0;
-                do {
-                    level++;
-                } while (tw.parent(i++) !== in_destructuring);
-            }
-            var node = tw.parent(level);
-            def.export = node instanceof AST_Export;
-        }
     });
     self.walk(tw);
 
@@ -263,9 +199,8 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
                     s.uses_eval = true;
                 }
             }
-            var sym;
-            if (tw.parent() instanceof AST_NameMapping && tw.parent(1).module_name
-                || !(sym = node.scope.find_variable(name))) {
+            var sym = node.scope.find_variable(name);
+            if (!sym) {
                 sym = self.def_global(node);
             } else if (sym.scope instanceof AST_Lambda && name == "arguments") {
                 sym.scope.uses_arguments = true;
@@ -305,19 +240,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
         }));
     }
 
-    // pass 4: add symbol definitions to loop scopes
-    // Safari/Webkit bug workaround - loop init let variable shadowing argument.
-    // https://github.com/mishoo/UglifyJS2/issues/1753
-    // https://bugs.webkit.org/show_bug.cgi?id=171041
-    if (options.safari10) {
-        for (var i = 0; i < for_scopes.length; i++) {
-            var scope = for_scopes[i];
-            scope.parent_scope.variables.each(function(def) {
-                push_uniq(scope.enclosed, def);
-            });
-        }
-    }
-
     if (options.cache) {
         this.cname = options.cache.cname;
     }
@@ -346,18 +268,10 @@ AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){
     this.cname = -1;                    // the current index for mangling functions/variables
 });
 
-AST_Node.DEFMETHOD("is_block_scope", return_false);
-AST_Class.DEFMETHOD("is_block_scope", return_false);
-AST_Lambda.DEFMETHOD("is_block_scope", return_false);
-AST_Toplevel.DEFMETHOD("is_block_scope", return_false);
-AST_SwitchBranch.DEFMETHOD("is_block_scope", return_false);
-AST_Block.DEFMETHOD("is_block_scope", return_true);
-AST_IterationStatement.DEFMETHOD("is_block_scope", return_true);
-
 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_SymbolConst({
+    this.def_variable(new AST_SymbolFunarg({
         name: "arguments",
         start: this.start,
         end: this.end
@@ -391,9 +305,7 @@ AST_Scope.DEFMETHOD("find_variable", function(name){
 });
 
 AST_Scope.DEFMETHOD("def_function", function(symbol){
-    var def = this.def_variable(symbol);
-    this.functions.set(symbol.name, def);
-    return def;
+    this.functions.set(symbol.name, this.def_variable(symbol));
 });
 
 AST_Scope.DEFMETHOD("def_variable", function(symbol){
@@ -481,7 +393,6 @@ AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){
     options = defaults(options, {
         eval        : false,
         ie8         : false,
-        keep_classnames: false,
         keep_fnames : false,
         reserved    : [],
         toplevel    : false,
@@ -535,18 +446,13 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
             node.mangled_name = name;
             return true;
         }
-        var mangle_with_block_scope =
-            (!options.ie8 && node instanceof AST_SymbolCatch) ||
-            node instanceof AST_SymbolBlockDeclaration;
-        if (mangle_with_block_scope) {
+        if (!options.ie8 && node instanceof AST_SymbolCatch) {
             to_mangle.push(node.definition());
             return;
         }
     });
     this.walk(tw);
-    to_mangle.forEach(function(def){
-        def.mangle(options);
-    });
+    to_mangle.forEach(function(def){ def.mangle(options) });
 
     if (options.cache) {
         options.cache.cname = this.cname;

lib/transform.js

@@ -163,18 +163,10 @@ TreeTransformer.prototype = new TreeWalker;
         if (self.value) self.value = self.value.transform(tw);
     });
 
-    _(AST_Destructuring, function(self, tw) {
-        self.names = do_list(self.names, tw);
-    });
-
     _(AST_Lambda, function(self, tw){
         if (self.name) self.name = self.name.transform(tw);
         self.argnames = do_list(self.argnames, tw);
-        if (self.body instanceof AST_Node) {
-            self.body = self.body.transform(tw);
-        } else {
-            self.body = do_list(self.body, tw);
-        }
+        self.body = do_list(self.body, tw);
     });
 
     _(AST_Call, function(self, tw){
@@ -195,14 +187,6 @@ TreeTransformer.prototype = new TreeWalker;
         self.property = self.property.transform(tw);
     });
 
-    _(AST_Yield, function(self, tw){
-        if (self.expression) self.expression = self.expression.transform(tw);
-    });
-
-    _(AST_Await, function(self, tw){
-        self.expression = self.expression.transform(tw);
-    });
-
     _(AST_Unary, function(self, tw){
         self.expression = self.expression.transform(tw);
     });
@@ -227,50 +211,7 @@ TreeTransformer.prototype = new TreeWalker;
     });
 
     _(AST_ObjectProperty, function(self, tw){
-        if (self.key instanceof AST_Node) {
-            self.key = self.key.transform(tw);
-        }
         self.value = self.value.transform(tw);
     });
 
-    _(AST_Class, function(self, tw){
-        if (self.name) self.name = self.name.transform(tw);
-        if (self.extends) self.extends = self.extends.transform(tw);
-        self.properties = do_list(self.properties, tw);
-    });
-
-    _(AST_Expansion, function(self, tw){
-        self.expression = self.expression.transform(tw);
-    });
-
-    _(AST_NameMapping, function(self, tw) {
-        self.foreign_name = self.foreign_name.transform(tw);
-        self.name = self.name.transform(tw);
-    });
-
-    _(AST_Import, function(self, tw) {
-        if (self.imported_name) self.imported_name = self.imported_name.transform(tw);
-        if (self.imported_names) do_list(self.imported_names, tw);
-        self.module_name = self.module_name.transform(tw);
-    });
-
-    _(AST_Export, function(self, tw) {
-        if (self.exported_definition) self.exported_definition = self.exported_definition.transform(tw);
-        if (self.exported_value) self.exported_value = self.exported_value.transform(tw);
-        if (self.exported_names) do_list(self.exported_names, tw);
-        if (self.module_name) self.module_name = self.module_name.transform(tw);
-    });
-
-    _(AST_TemplateString, function(self, tw) {
-        for (var i = 0; i < self.segments.length; i++) {
-            if (!(self.segments[i] instanceof AST_TemplateSegment)) {
-                self.segments[i] = self.segments[i].transform(tw);
-            }
-        }
-    });
-
-    _(AST_PrefixedTemplateString, function(self, tw) {
-        self.template_string = self.template_string.transform(tw);
-    });
-
 })();

package.json

@@ -1,10 +1,10 @@
 {
-  "name": "uglify-es",
+  "name": "uglify-js",
   "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
-  "homepage": "https://github.com/mishoo/UglifyJS2/tree/harmony",
+  "homepage": "http://lisperator.net/uglifyjs",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.0.22",
+  "version": "3.0.23",
   "engines": {
     "node": ">=0.8.0"
   },
@@ -40,18 +40,5 @@
   "scripts": {
     "test": "node test/run-tests.js"
   },
-  "keywords": [
-    "uglify",
-    "uglify-js",
-    "uglify-es",
-    "minify",
-    "minifier",
-    "es5",
-    "es6",
-    "es2015",
-    "es2016",
-    "es2017",
-    "async",
-    "await"
-  ]
+  "keywords": ["uglify", "uglify-js", "minify", "minifier", "es5"]
 }

test/compress/arrays.js

@@ -1,5 +1,3 @@
-// NOTE trailing comma doesn't contribute to length of an array
-// That also means the array changes length if previous element is a hole too and got cut off
 holes_and_undefined: {
     input: {
         w = [1,,];
@@ -93,79 +91,6 @@ constant_join_2: {
     }
 }
 
-spread_with_variable_as_last_element: {
-    input: {
-        var values = [4, 5, 6];
-        var a = [1, 2, 3, ...values];
-    }
-    expect: {
-        var values = [4, 5, 6];
-        var a = [1, 2, 3, ...values];
-    }
-}
-
-spread_with_variable_in_middle: {
-    input: {
-        var values = [4, 5, 6];
-        var a = [1, 2, 3, ...values, 7,,,];
-    }
-    expect: {
-        var values = [4, 5, 6];
-        var a = [1, 2, 3, ...values, 7,,,];
-    }
-}
-
-spread_with_variable_at_front: {
-    input: {
-        var values = [1, 2, 3];
-        var a = [...values, 4, 5, 6];
-    }
-    expect: {
-        var values = [1, 2, 3];
-        var a = [...values, 4, 5, 6];
-    }
-}
-
-spread_with_variable_at_front_after_elisions: {
-    input: {
-        var values = [1, 2, 3];
-        var a = [,,,...values, 4, 5, 6];
-    }
-    expect: {
-        var values = [1, 2, 3];
-        var a = [,,,...values, 4, 5, 6];
-    }
-}
-
-spread_with_array_at_end: {
-    input: {
-        var a = [1, 2, ...[4, 5, 6]];
-    }
-    expect: {
-        var a = [1, 2, ...[4, 5, 6]];
-    }
-}
-
-spread_with_logical_expression_at_end: {
-    options = { evaluate: true }
-    input: {
-        var a = [1, 2, 3, ...[2+2]]
-    }
-    expect: {
-        var a = [1, 2, 3, ...[4]]
-    }
-}
-
-spread_with_logical_expression_at_middle: {
-    options = { evaluate: true }
-    input: {
-        var a = [1, 1, ...[1+1, 1+2, 2+3], 8]
-    }
-    expect: {
-        var a = [1, 1, ...[2, 3, 5], 8]
-    }
-}
-
 constant_join_3: {
     options = {
         unsafe: true,

test/compress/arrow.js

@@ -1,540 +0,0 @@
-arrow_functions_without_body: {
-    input: {
-        var a1 = () => 42;
-        var a2 = (p) => p;
-        var a3 = p => p;
-        var a4 = (...p) => p;
-        var a5 = (b, c) => b + c;
-        var a6 = (b, ...c) => b + c[0];
-        var a7 = (...b) => b.join();
-    }
-    expect: {
-        var a1 = () => 42;
-        var a2 = (p) => p;
-        var a3 = p => p;
-        var a4 = (...p) => p;
-        var a5 = (b, c) => b + c;
-        var a6 = (b, ...c) => b + c[0];
-        var a7 = (...b) => b.join();
-    }
-}
-
-arrow_functions_with_body: {
-    input: {
-        var a1 = () => {
-            var a = 42 * Math.random();
-            return a;
-        };
-        var a2 = (p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a3 = p => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a4 = (...p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a5 = (b, c) => {
-            var result = b * c + b / c;
-            return result
-        };
-        var a6 = (b, ...c) => {
-            var result = b;
-            for (var i = 0; i < c.length; i++)
-                result += c[i];
-            return result
-        };
-        var a7 = (...b) => {
-            b.join();
-        }
-    }
-    expect: {
-        var a1 = () => {
-            var a = 42 * Math.random();
-            return a;
-        };
-        var a2 = (p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a3 = p => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a4 = (...p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a5 = (b, c) => {
-            var result = b * c + b / c;
-            return result
-        };
-        var a6 = (b, ...c) => {
-            var result = b;
-            for (var i = 0; i < c.length; i++)
-                result += c[i];
-            return result
-        };
-        var a7 = (...b) => {
-            b.join();
-        };
-    }
-}
-
-arrow_function_with_single_parameter_with_default: {
-    input: {
-        var foo = (a = 0) => doSomething(a);
-    }
-    expect_exact: "var foo=(a=0)=>doSomething(a);"
-}
-
-arrow_binding_pattern: {
-    input: {
-        var foo = ([]) => "foo";
-        var bar = ({}) => "bar";
-        var with_default = (foo = "default") => foo;
-        var object_with_default = ({foo = "default", bar: baz = "default"}) => foo;
-        var array_after_spread = (...[foo]) => foo;
-        var array_after_spread = (...{foo}) => foo;
-        var computed = ({ [compute()]: x }) => {};
-        var array_hole = ([, , ...x] = [1, 2]) => {};
-        var object_trailing_elision = ({foo,}) => {};
-        var spread_empty_array = (...[]) => "foo";
-        var spread_empty_object = (...{}) => "foo";
-    }
-    expect: {
-        var foo = ([]) => "foo";
-        var bar = ({}) => "bar";
-        var with_default = (foo = "default") => foo;
-        var object_with_default = ({foo = "default", bar: baz = "default"}) => foo;
-        var array_after_spread = (...[foo]) => foo;
-        var array_after_spread = (...{foo}) => foo;
-        var computed = ({ [compute()]: x }) => {};
-        var array_hole = ([, , ...x] = [1, 2]) => {};
-        var object_trailing_elision = ({foo,}) => {};
-        var spread_empty_array = (...[]) => "foo";
-        var spread_empty_object = (...{}) => "foo";
-    }
-}
-
-arrow_binding_pattern_strict: {
-    input: {
-        var foo = ([,]) => "foo";
-    }
-    expect_exact: 'var foo=([,])=>"foo";'
-}
-
-arrow_with_regexp: {
-    input: {
-        num => /\d{11,14}/.test( num )
-    }
-    expect: {
-        num => /\d{11,14}/.test( num )
-    }
-}
-
-arrow_unused: {
-    options = {
-        toplevel: false,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        top => dog;
-        let fn = a => { console.log(a * a); };
-        let u = (x, y) => x - y + g;
-        (() => { console.log("0"); })();
-        !function(x) {
-            (() => { console.log("1"); })();
-            let unused = x => { console.log(x); };
-            let baz = e => e + e;
-            console.log(baz(x));
-        }(1);
-        fn(3);
-    }
-    expect: {
-        let fn = a => { console.log(a * a); };
-        let u = (x, y) => x - y + g;
-        (() => { console.log("0"); })();
-        !function(x) {
-            (() => { console.log("1"); })();
-            let baz = e => e + e;
-            console.log(baz(x));
-        }(1);
-        fn(3);
-    }
-    expect_stdout: [ "0", "1", "2", "9" ]
-    node_version: ">=6"
-}
-
-arrow_unused_toplevel: {
-    options = {
-        toplevel: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        top => dog;
-        let fn = a => { console.log(a * a); };
-        let u = (x, y) => x - y + g;
-        (() => { console.log("0"); })();
-        !function(x) {
-            (() => { console.log("1"); })();
-            let unused = x => { console.log(x); };
-            let baz = e => e + e;
-            console.log(baz(x));
-        }(1);
-        fn(3);
-    }
-    expect: {
-        let fn = a => { console.log(a * a); };
-        (() => { console.log("0"); })();
-        !function(x) {
-            (() => { console.log("1"); })();
-            let baz = e => e + e;
-            console.log(baz(x));
-        }(1);
-        fn(3);
-    }
-    expect_stdout: [ "0", "1", "2", "9" ]
-    node_version: ">=6"
-}
-
-no_leading_parentheses: {
-    input: {
-        (x,y) => x(y);
-        async (x,y) => await x(y);
-    }
-    expect_exact: "(x,y)=>x(y);async(x,y)=>await x(y);"
-}
-
-async_identifiers: {
-    options = {
-        arrows: true,
-        ecma: 6,
-    }
-    input: {
-        var async = function(x){ console.log("async", x); };
-        var await = function(x){ console.log("await", x); };
-        async(1);
-        await(2);
-    }
-    expect: {
-        var async = x => { console.log("async", x); };
-        var await = x => { console.log("await", x); };
-        async(1);
-        await(2);
-    }
-    expect_stdout: [
-        "async 1",
-        "await 2",
-    ]
-    node_version: ">=4"
-}
-
-async_function_expression: {
-    options = {
-        arrows: true,
-        ecma: 6,
-        evaluate: true,
-        side_effects: true,
-    }
-    input: {
-        var named = async function foo() {
-            await bar(1 + 0) + (2 + 0);
-        }
-        var anon = async function() {
-            await (1 + 0) + bar(2 + 0);
-        }
-    }
-    expect: {
-        var named = async function foo() {
-            await bar(1);
-        };
-        var anon = async () => {
-            await 1, bar(2);
-        };
-    }
-}
-
-issue_27: {
-    options = {
-        arrows: true,
-        collapse_vars: true,
-        ecma: 6,
-        unused: true,
-    }
-    input: {
-        (function(jQuery) {
-            var $;
-            $ = jQuery;
-            $("body").addClass("foo");
-        })(jQuery);
-    }
-    expect: {
-        (jQuery => {
-            jQuery("body").addClass("foo");
-        })(jQuery);
-    }
-}
-
-issue_2105_1: {
-    options = {
-        arrows: true,
-        collapse_vars: true,
-        ecma: 6,
-        inline: true,
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function(factory) {
-            factory();
-        }( function() {
-            return function(fn) {
-                fn()().prop();
-            }( function() {
-                function bar() {
-                    var quux = function() {
-                        console.log("PASS");
-                    }, foo = function() {
-                        console.log;
-                        quux();
-                    };
-                    return { prop: foo };
-                }
-                return bar;
-            } );
-        });
-    }
-    expect: {
-        void (() => {
-            var quux = () => {
-                console.log("PASS");
-            };
-            return {
-                prop: () => {
-                    console.log;
-                    quux();
-                }
-            };
-        })().prop();
-    }
-    expect_stdout: "PASS"
-    node_version: ">=4"
-}
-
-issue_2105_2: {
-    options = {
-        collapse_vars: true,
-        inline: true,
-        reduce_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        ((factory) => {
-            factory();
-        })( () => {
-            return ((fn) => {
-                fn()().prop();
-            })( () => {
-                let bar = () => {
-                    var quux = () => {
-                        console.log("PASS");
-                    }, foo = () => {
-                        console.log;
-                        quux();
-                    };
-                    return { prop: foo };
-                };
-                return bar;
-            } );
-        });
-    }
-    expect: {
-        void (() => {
-            var quux = () => {
-                console.log("PASS");
-            };
-            return {
-                prop: () => {
-                    console.log;
-                    quux();
-                }
-            };
-        })().prop();
-    }
-    expect_stdout: "PASS"
-    node_version: ">=6"
-}
-
-issue_2136_2: {
-    options = {
-        arrows: true,
-        collapse_vars: true,
-        ecma: 6,
-        inline: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            console.log(x);
-        }
-        !function(a, ...b) {
-            f(b[0]);
-        }(1, 2, 3);
-    }
-    expect: {
-        function f(x) {
-            console.log(x);
-        }
-        f([2,3][0]);
-    }
-    expect_stdout: "2"
-    node_version: ">=6"
-}
-
-issue_2136_3: {
-    options = {
-        arrows: true,
-        collapse_vars: true,
-        ecma: 6,
-        evaluate: true,
-        inline: true,
-        passes: 3,
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-        unsafe: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            console.log(x);
-        }
-        !function(a, ...b) {
-            f(b[0]);
-        }(1, 2, 3);
-    }
-    expect: {
-        console.log(2);
-    }
-    expect_stdout: "2"
-    node_version: ">=6"
-}
-
-call_args: {
-    options = {
-        arrows: true,
-        ecma: 6,
-        evaluate: true,
-        inline: true,
-        reduce_vars: true,
-    }
-    input: {
-        const a = 1;
-        console.log(a);
-        +function(a) {
-            return a;
-        }(a);
-    }
-    expect: {
-        const a = 1;
-        console.log(1);
-        +(1, 1);
-    }
-    expect_stdout: true
-}
-
-call_args_drop_param: {
-    options = {
-        arrows: true,
-        ecma: 6,
-        evaluate: true,
-        inline: true,
-        keep_fargs: false,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        const a = 1;
-        console.log(a);
-        +function(a) {
-            return a;
-        }(a, b);
-    }
-    expect: {
-        const a = 1;
-        console.log(1);
-        +(b, 1);
-    }
-    expect_stdout: true
-}
-
-issue_485_crashing_1530: {
-    options = {
-        arrows: true,
-        conditionals: true,
-        dead_code: true,
-        ecma: 6,
-        evaluate: true,
-        inline: true,
-    }
-    input: {
-        (function(a) {
-            if (true) return;
-            var b = 42;
-        })(this);
-    }
-    expect: {
-        this, void 0;
-    }
-}
-
-issue_2084: {
-    options = {
-        arrows: true,
-        collapse_vars: true,
-        conditionals: true,
-        ecma: 6,
-        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;
-        ((c) => {
-            c = 1 + c,
-            c = 1 + (c = 0),
-            0 !== 23..toString() && (c = 1 + c);
-        })(-1),
-        console.log(c);
-    }
-    expect_stdout: "0"
-    node_version: ">=4"
-}

test/compress/async.js

@@ -1,294 +0,0 @@
-await_precedence: {
-    input: {
-        async function f1() { await x + y; }
-        async function f2() { await (x + y); }
-    }
-    expect_exact: "async function f1(){await x+y}async function f2(){await(x+y)}"
-}
-
-await_precedence_prop: {
-    input: {
-        async function f1(){ return (await foo()).bar; }
-        async function f2(){ return (await foo().bar); }
-    }
-    expect_exact: "async function f1(){return(await foo()).bar}async function f2(){return await foo().bar}"
-}
-
-await_precedence_call: {
-    input: {
-        async function f3(){ return (await foo())(); }
-        async function f4(){ return await (foo()()); }
-    }
-    expect_exact: "async function f3(){return(await foo())()}async function f4(){return await foo()()}"
-}
-
-async_function_declaration: {
-    options = {
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        async function f0() {}
-        async function f1() { await x + y; }
-        async function f2() { await (x + y); }
-        async function f3() { await x + await y; }
-        async function f4() { await (x + await y); }
-        async function f5() { await x; await y; }
-        async function f6() { await x, await y; }
-    }
-    expect: {
-        async function f0() {}
-        async function f1() { await x, y; }
-        async function f2() { await (x + y); }
-        async function f3() { await x, await y; }
-        async function f4() { await (x + await y); }
-        async function f5() { await x; await y; }
-        async function f6() { await x, await y; }
-    }
-}
-
-async_function_expression: {
-    options = {
-        evaluate: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var named = async function foo() {
-            await bar(1 + 0) + (2 + 0);
-        }
-        var anon = async function() {
-            await (1 + 0) + bar(2 + 0);
-        }
-    }
-    expect: {
-        var named = async function() {
-            await bar(1);
-        };
-        var anon = async function() {
-            await 1, bar(2);
-        };
-    }
-}
-
-async_class: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        class Foo {
-            async m1() {
-                return await foo(1 + 2);
-            }
-            static async m2() {
-                return await foo(3 + 4);
-            }
-        }
-    }
-    expect: {
-        class Foo {
-            async m1() {
-                return await foo(3);
-            }
-            static async m2() {
-                return await foo(7);
-            }
-        }
-    }
-}
-
-async_object_literal: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        var obj = {
-            async a() {
-                await foo(1 + 0);
-            },
-            anon: async function(){
-                await foo(2 + 0);
-            }
-        };
-    }
-    expect: {
-        var obj = {
-            async a() {
-                await foo(1);
-            },
-            anon: async function() {
-                await foo(2);
-            }
-        };
-    }
-}
-
-async_export: {
-    input: {
-        export async function run() {};
-        export default async function def() {};
-    }
-    expect: {
-        export async function run() {};
-        export default async function def() {};
-    }
-}
-
-async_inline: {
-    options = {
-        collapse_vars: true,
-        conditionals: true,
-        evaluate: true,
-        inline: true,
-        negate_iife: true,
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        (async function(){ return await 3; })();
-        (async function(x){ await console.log(x); })(4);
-
-        function echo(x) { return x; }
-        echo( async function(){ return await 1; }() );
-        echo( async function(x){ await console.log(x); }(2) );
-
-        function top() { console.log("top"); }
-        top();
-
-        async function async_top() { console.log("async_top"); }
-        async_top();
-    }
-    expect: {
-        !async function(){await 3}();
-        !async function(x){await console.log(4)}();
-
-        function echo(x){return x}
-        echo(async function(){return await 1}());
-        echo(async function(x){await console.log(2)}());
-
-        console.log("top");
-
-        !async function(){console.log("async_top")}();
-    }
-    expect_stdout: [
-        "4",
-        "2",
-        "top",
-        "async_top",
-    ]
-    node_version: ">=8"
-}
-
-async_identifiers: {
-    input: {
-        var async = function(x){ console.log("async", x); };
-        var await = function(x){ console.log("await", x); };
-        async(1);
-        await(2);
-    }
-    expect: {
-        var async = function(x){ console.log("async", x); };
-        var await = function(x){ console.log("await", x); };
-        async(1);
-        await(2);
-    }
-    expect_stdout: [
-        "async 1",
-        "await 2",
-    ]
-}
-
-async_shorthand_property: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        function print(o) { console.log(o.async + " " + o.await); }
-        var async = "Async", await = "Await";
-
-        print({ async });
-        print({ await });
-        print({ async, await });
-        print({ await, async });
-
-        print({ async: async });
-        print({ await: await });
-        print({ async: async, await: await });
-        print({ await: await, async: async });
-    }
-    expect: {
-        function a(a) { console.log(a.async + " " + a.await); }
-        var n = "Async", c = "Await";
-
-        a({ async: n });
-        a({ await: c });
-        a({ async: n, await: c });
-        a({ await: c, async: n });
-
-        a({ async: n });
-        a({ await: c });
-        a({ async: n, await: c });
-        a({ await: c, async: n });
-    }
-    expect_stdout: [
-        "Async undefined",
-        "undefined Await",
-        "Async Await",
-        "Async Await",
-        "Async undefined",
-        "undefined Await",
-        "Async Await",
-        "Async Await",
-    ]
-    node_version: ">=4"
-}
-
-async_arrow: {
-    input: {
-        let a1 = async x => await foo(x);
-        let a2 = async () => await bar();
-        let a3 = async (x) => await baz(x);
-        let a4 = async (x, y) => { await far(x, y); }
-        let a5 = async ({x = [1], y: z = 2}) => { await wow(x, z); }
-    }
-    expect: {
-        let a1 = async x => await foo(x);
-        let a2 = async () => await bar();
-        let a3 = async (x) => await baz(x);
-        let a4 = async (x, y) => { await far(x, y); }
-        let a5 = async ({x = [1], y: z = 2}) => { await wow(x, z); }
-    }
-}
-
-async_arrow_wait: {
-    input: {
-        var a = async (x, y) => await x(y);
-    }
-    expect_exact: "var a=async(x,y)=>await x(y);"
-}
-
-async_arrow_iife: {
-    input: {
-        (async () => {
-            await fetch({});
-        })();
-    }
-    expect_exact: "(async()=>{await fetch({})})();"
-}
-
-async_arrow_iife_negate_iife: {
-    options = {
-        negate_iife: true,
-    }
-    input: {
-        (async () => {
-            await fetch();
-        })();
-        (() => {
-            plain();
-        })();
-    }
-    expect_exact: "(async()=>{await fetch()})();(()=>{plain()})();"
-}

test/compress/block-scope.js

@@ -1,191 +0,0 @@
-
-let_statement: {
-    input: {
-        let x = 6;
-    }
-    expect_exact: "let x=6;"
-}
-
-do_not_hoist_let: {
-    options = {
-        hoist_vars: true,
-    };
-    input: {
-        function x() {
-            if (FOO) {
-                let let1;
-                let let2;
-                var var1;
-                var var2;
-            }
-        }
-    }
-    expect: {
-        function x() {
-            var var1, var2;
-            if (FOO) {
-                let let1;
-                let let2;
-            }
-        }
-    }
-}
-
-do_not_remove_anon_blocks_if_they_have_decls: {
-    input: {
-        function x() {
-            {
-                let x;
-            }
-            {
-                var x;
-            }
-            {
-                const y;
-                class Zee {};
-            }
-        }
-        {
-            let y;
-        }
-        {
-            var y;
-        }
-    }
-    expect: {
-        function x(){
-            {
-                let x
-            }
-            var x;
-            {
-                const y;
-                class Zee {}
-            }
-        }
-        {
-            let y
-        }
-        var y;
-    }
-}
-
-remove_unused_in_global_block: {
-    options = {
-        unused: true,
-    }
-    input: {
-        {
-            let x;
-            const y;
-            class Zee {};
-            var w;
-        }
-        let ex;
-        const why;
-        class Zed {};
-        var wut;
-        console.log(x, y, Zee);
-    }
-    expect: {
-        var w;
-        let ex;
-        const why;
-        class Zed {};
-        var wut;
-        console.log(x, y, Zee);
-    }
-}
-
-regression_block_scope_resolves: {
-    mangle = { };
-    options = {
-        dead_code: false
-    };
-    input: {
-        (function () {
-            if (1) {
-                let x;
-                const y = 1;
-                class Zee {};
-            }
-            if (1) {
-                let ex;
-                const why = 2;
-                class Zi {};
-            }
-            console.log(typeof x, typeof y, typeof Zee, typeof ex, typeof why, typeof Zi);
-        }());
-    }
-    expect: {
-        (function () {
-            if (1) {
-                let e;
-                const o = 1;
-                class t {};
-            }
-            if (1) {
-                let e;
-                const o = 2;
-                class t {};
-            }
-            console.log(typeof x, typeof y, typeof Zee, typeof ex, typeof why, typeof Zi);
-        }());
-    }
-    expect_stdout: "undefined undefined undefined undefined undefined undefined"
-    node_version: ">=6"
-}
-
-switch_block_scope_mangler: {
-    mangle = {}
-    input: {
-        var fn = function(code) {
-            switch (code) {
-                case 1:
-                    let apple = code + 1;
-                    let dog = code + 4;
-                    console.log(apple, dog);
-                    break;
-                case 2:
-                    let banana = code + 2;
-                    console.log(banana);
-                    break;
-                default:
-                    let cat = code + 3;
-                    console.log(cat);
-            }
-        };
-        fn(1);
-        fn(2);
-        fn(3);
-    }
-    expect: {
-        var fn = function(e) {
-            switch (e) {
-              case 1:
-                let l = e + 1
-                let o = e + 4;
-                console.log(l, o);
-                break;
-
-              case 2:
-                let n = e + 2;
-                console.log(n);
-                break;
-
-              default:
-                let c = e + 3;
-                console.log(c);
-            }
-        };
-        fn(1);
-        fn(2);
-        fn(3);
-    }
-    expect_stdout: [
-        "2 5",
-        "4",
-        "6",
-    ]
-    node_version: ">=6"
-}

test/compress/blocks.js

@@ -47,142 +47,3 @@ keep_some_blocks: {
         } else stuff();
     }
 }
-
-issue_1664: {
-    input: {
-        var a = 1;
-        function f() {
-            if (undefined) a = 2;
-            {
-                function undefined() {}
-                undefined();
-            }
-        }
-        f();
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        function f() {
-            if (undefined) a = 2;
-            {
-                function undefined() {}
-                undefined();
-            }
-        }
-        f();
-        console.log(a);
-    }
-    expect_stdout: "1"
-    node_version: ">=6"
-}
-
-issue_1672_for: {
-    input: {
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            for (; console.log("FAIL");) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect: {
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            for (; console.log("FAIL");) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect_stdout: true
-    node_version: ">=6"
-}
-
-issue_1672_for_strict: {
-    input: {
-        "use strict";
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            for (; console.log("FAIL");) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect: {
-        "use strict";
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            for (; console.log("FAIL");) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect_stdout: true
-    node_version: ">=6"
-}
-
-issue_1672_if: {
-    input: {
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            if (console.log("FAIL")) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect: {
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            if (console.log("FAIL")) function xxx() {}
-            break;
-        }
-    }
-    expect_stdout: true
-    node_version: ">=6"
-}
-
-issue_1672_if_strict: {
-    input: {
-        "use strict";
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            if (console.log("FAIL")) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect: {
-        "use strict";
-        switch (function() {
-            return xxx;
-        }) {
-          case xxx:
-            if (console.log("FAIL")) {
-                function xxx() {}
-            }
-            break;
-        }
-    }
-    expect_stdout: true
-    node_version: ">=6"
-}

test/compress/collapse_vars.js

@@ -583,8 +583,8 @@ collapse_vars_assignment: {
             return a = a;
         }
         function f1(c) {
-            const a = 3 / c;
-            const b = 1 - a;
+            var a = 3 / c;
+            var b = 1 - a;
             return b;
         }
         function f2(c) {
@@ -724,10 +724,10 @@ collapse_vars_misc1: {
             return t;
         }
         function f1(x) { var y = 5 - x; return y; }
-        function f2(x) { const z = foo(), y = z / (5 - x); return y; }
+        function f2(x) { var 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) { const z = foo(), y = (5 - window.x) / z; return y; }
+        function f5(x) { var 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) { const z = foo(); return (5 - window.x) / z }
+        function f5(x) { var 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) }
@@ -1328,7 +1328,6 @@ collapse_vars_regexp: {
 issue_1537: {
     options = {
         collapse_vars: true,
-        toplevel: true,
     }
     input: {
         var k = '';
@@ -1340,104 +1339,6 @@ issue_1537: {
     }
 }
 
-issue_1537_for_of: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var k = '';
-        for (k of {prop: 'val'}){}
-    }
-    expect: {
-        var k = '';
-        for (k of {prop: 'val'});
-    }
-}
-
-issue_1537_destructuring_1: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        [x] = [y];
-    }
-    expect: {
-        var x = 1, y = 2;
-        [x] = [y];
-    }
-}
-
-issue_1537_destructuring_2: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = foo();
-        [x] = [1];
-    }
-    expect: {
-        var x = foo();
-        [x] = [1];
-    }
-}
-
-issue_1537_destructuring_3: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = Math.random();
-        ({p: x = 9} = {v: 1});
-    }
-    expect: {
-        var x = Math.random();
-        ({p: x = 9} = {v: 1});
-    }
-}
-
-issue_1537_destructuring_for_in: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] in a);
-        })();
-    }
-    expect: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] in a);
-        })();
-    }
-}
-
-issue_1537_destructuring_for_of: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] of a);
-        })();
-    }
-    expect: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] of a);
-        })();
-    }
-}
-
 issue_1562: {
     options = {
         collapse_vars: true,
@@ -2077,10 +1978,10 @@ chained_3: {
     }
     expect: {
         console.log(function(a, b) {
-            var c = a, c = b;
+            var c = 1, c = b;
             b++;
             return c;
-        }(1, 2));
+        }(0, 2));
     }
     expect_stdout: "2"
 }
@@ -2203,10 +2104,11 @@ unused_orig: {
     expect: {
         var a = 1;
         console.log(function(b) {
-            var a;
             var c = b;
-            for (var d in c)
-                return --b + (a = c[0]);
+            for (var d in c) {
+                var a = c[0];
+                return --b + a;
+            }
             a && a.NaN;
         }([2]), a);
     }
@@ -2285,48 +2187,72 @@ compound_assignment: {
     expect_stdout: "4"
 }
 
-reassign_const_1: {
+issue_2187_1: {
     options = {
         collapse_vars: true,
+        unused: true,
     }
     input: {
-        function f() {
-            const a = 1;
-            a = 2;
-            return a;
-        }
-        console.log(f());
+        var a = 1;
+        !function(foo) {
+            foo();
+            var a = 2;
+            console.log(a);
+        }(function() {
+            console.log(a);
+        });
     }
     expect: {
-        function f() {
-            const a = 1;
-            a = 2;
-            return a;
-        }
-        console.log(f());
+        var a = 1;
+        !function(foo) {
+            foo();
+            var a = 2;
+            console.log(a);
+        }(function() {
+            console.log(a);
+        });
     }
-    expect_stdout: true
+    expect_stdout: [
+        "1",
+        "2",
+    ]
 }
 
-reassign_const_2: {
+issue_2187_2: {
     options = {
         collapse_vars: true,
+        unused: true,
     }
     input: {
-        function f() {
-            const a = 1;
-            ++a;
-            return a;
-        }
-        console.log(f());
+        var b = 1;
+        console.log(function(a) {
+            return a && ++b;
+        }(b--));
     }
     expect: {
-        function f() {
-            const a = 1;
-            ++a;
-            return a;
-        }
-        console.log(f());
+        var b = 1;
+        console.log(function(a) {
+            return b-- && ++b;
+        }());
     }
-    expect_stdout: true
+    expect_stdout: "1"
+}
+
+issue_2187_3: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        unused: true,
+    }
+    input: {
+        var b = 1;
+        console.log(function(a) {
+            return a && ++b;
+        }(b--));
+    }
+    expect: {
+        var b = 1;
+        console.log(b-- && ++b);
+    }
+    expect_stdout: "1"
 }

test/compress/const.js

@@ -1,166 +0,0 @@
-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

@@ -54,12 +54,12 @@ dead_code_2_should_warn: {
             x = 10;
             throw new Error("foo");
             var x;
-            var g;
+            function g(){};
         }
         f();
     }
     expect_stdout: true
-    node_version: ">=6"
+    node_version: "<=4"
 }
 
 dead_code_2_should_warn_strict: {
@@ -126,7 +126,7 @@ dead_code_constant_boolean_should_warn_more: {
     }
     expect: {
         var foo;
-        var bar;
+        function bar() {}
         // nothing for the while
         // as for the for, it should keep:
         var x = 10, y;
@@ -134,7 +134,7 @@ dead_code_constant_boolean_should_warn_more: {
         bar();
     }
     expect_stdout: true
-    node_version: ">=6"
+    node_version: "<=4"
 }
 
 dead_code_constant_boolean_should_warn_more_strict: {
@@ -173,153 +173,6 @@ dead_code_constant_boolean_should_warn_more_strict: {
     node_version: ">=4"
 }
 
-dead_code_block_decls_die: {
-    options = {
-        dead_code    : true,
-        conditionals : true,
-        booleans     : true,
-        evaluate     : true
-    };
-    input: {
-        if (0) {
-            let foo = 6;
-            const bar = 12;
-            class Baz {};
-            var qux;
-        }
-        console.log(foo, bar, Baz);
-    }
-    expect: {
-        var qux;
-        console.log(foo, bar, Baz);
-    }
-}
-
-dead_code_const_declaration: {
-    options = {
-        dead_code    : true,
-        loops        : true,
-        booleans     : true,
-        conditionals : true,
-        evaluate     : true,
-        reduce_vars  : true,
-    };
-    input: {
-        var unused;
-        const CONST_FOO = false;
-        if (CONST_FOO) {
-            console.log("unreachable");
-            var moo;
-            function bar() {}
-        }
-    }
-    expect: {
-        var unused;
-        const CONST_FOO = !1;
-        var moo;
-        var 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;
-        var 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;
-        var bar;
-        var beef = 'good';
-        var meat = 'beef';
-        var pork = 'bad';
-    }
-    expect_stdout: true
-}
-
 try_catch_finally: {
     options = {
         conditionals: true,

test/compress/destructuring.js

@@ -1,661 +0,0 @@
-destructuring_arrays: {
-    input: {
-        {const [aa, bb] = cc;}
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, bb] = cc;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, bb] = cc;
-        var [aa, [bb, cc]] = dd;
-        var [,[,,,,,],,,zz,] = xx; // Trailing comma
-        var [,,zzz,,] = xxx; // Trailing comma after hole
-    }
-    expect: {
-        {const [aa, bb] = cc;}
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, bb] = cc;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, bb] = cc;
-        var [aa, [bb, cc]] = dd;
-        var [,[,,,,,],,,zz] = xx;
-        var [,,zzz,,] = xxx;
-    }
-}
-
-destructuring_arrays_holes: {
-    input: {
-        var [,,,,] = a;
-        var [,,b,] = c;
-        var [d,,]  = e;
-    }
-    expect_exact: "var[,,,,]=a;var[,,b]=c;var[d,,]=e;"
-}
-
-destructuring_objects: {
-    input: {
-        {const {aa, bb} = {aa:1, bb:2};}
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb} = {aa:1, bb:2};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb} = {aa:1, bb:2};
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-    }
-    expect: {
-        {const {aa, bb} = {aa:1, bb:2};}
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb} = {aa:1, bb:2};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb} = {aa:1, bb:2};
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-    }
-}
-
-destructuring_objects_trailing_elision: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        var {cc,} = foo;
-    }
-    expect_exact: "var{cc}=foo;"
-}
-
-nested_destructuring_objects: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-    }
-    expect_exact: 'const[{a},b]=c;let[{a},b]=c;var[{a},b]=c;';
-}
-
-destructuring_constdef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (const [x,y] in pairs);
-        for (const [a] = 0;;);
-        for (const {c} of cees);
-    }
-    expect_exact: "for(const[x,y]in pairs);for(const[a]=0;;);for(const{c}of cees);"
-}
-
-destructuring_letdef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (let [x,y] in pairs);
-        for (let [a] = 0;;);
-        for (let {c} of cees);
-    }
-    expect_exact: "for(let[x,y]in pairs);for(let[a]=0;;);for(let{c}of cees);"
-}
-
-destructuring_vardef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (var [x,y] in pairs);
-        for (var [a] = 0;;);
-        for (var {c} of cees);
-    }
-    expect_exact: "for(var[x,y]in pairs);for(var[a]=0;;);for(var{c}of cees);"
-}
-
-destructuring_expressions: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        ({a, b});
-        [{a}];
-        f({x});
-    }
-    expect_exact: "({a,b});[{a}];f({x});"
-}
-
-destructuring_remove_unused_1: {
-    options = {
-        unused: true
-    }
-    input: {
-        function a() {
-            var unused = "foo";
-            var a = [1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var unused = "foo";
-            var a = {b: 1};
-            var {b} = a;
-            f(b);
-        }
-        function c() {
-            var unused = "foo";
-            var a = [[1]];
-            var [[b]] = a;
-            f(b);
-        }
-        function d() {
-            var unused = "foo";
-            var a = {b: {b:1}};
-            var {b:{b}} = a;
-            f(b);
-        }
-        function e() {
-            var unused = "foo";
-            var a = [1, 2, 3, 4, 5];
-            var x = [[1, 2, 3]];
-            var y = {h: 1};
-            var [b, ...c] = a;
-            var [...[e, f]] = x;
-            var [...{g: h}] = y;
-            f(b, c, e, f, g);
-        }
-    }
-    expect: {
-        function a() {
-            var a = [1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var a = {b: 1};
-            var {b} = a;
-            f(b);
-        }
-        function c() {
-            var a = [[1]];
-            var [[b]] = a;
-            f(b);
-        }
-        function d() {
-            var a = {b: {b:1}};
-            var {b:{b}} = a;
-            f(b);
-        }
-        function e() {
-            var a = [1, 2, 3, 4, 5];
-            var x = [[1, 2, 3]];
-            var y = {h: 1};
-            var [b, ...c] = a;
-            var [...[e, f]] = x;
-            var [...{g: h}] = y;
-            f(b, c, e, f, g);
-        }
-    }
-}
-
-destructuring_remove_unused_2: {
-    options = {
-        unused: true
-    }
-    input: {
-        function a() {
-            var unused = "foo";
-            var a = [,,1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var unused = "foo";
-            var a = [{a: [1]}];
-            var [{b: a}] = a;
-            f(b);
-        }
-    }
-    expect: {
-        function a() {
-            var a = [,,1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var a = [{a: [1]}];
-            var [{b: a}] = a;
-            f(b);
-        }
-    }
-}
-
-object_destructuring_may_need_parentheses: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        ({a, b} = {a: 1, b: 2});
-    }
-    expect_exact: "({a,b}={a:1,b:2});"
-}
-
-destructuring_with_undefined_as_default_assignment: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        [foo = undefined] = bar;
-        [foo = void 0] = bar;
-    }
-    expect: {
-        [foo] = bar;
-        [foo] = bar;
-    }
-}
-
-destructuring_dont_evaluate_with_undefined_as_default_assignment: {
-    options = {
-        evaluate: false
-    }
-    input: {
-        [foo = undefined] = bar;
-    }
-    expect: {
-        [foo = void 0] = bar;
-    }
-}
-
-reduce_vars: {
-    options = {
-        reduce_vars: true,
-    }
-    input: {
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, [bb, cc]] = dd;
-        [aa, [bb, cc]] = dd;
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-        ({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-        [{a},b] = c;
-        for (const [x,y] in pairs);
-        for (let [x,y] in pairs);
-        for (var [x,y] in pairs);
-        for ([x,y] in pairs);
-    }
-    expect: {
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, [bb, cc]] = dd;
-        [aa, [bb, cc]] = dd;
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-        ({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-        [{a},b] = c;
-        for (const [x,y] in pairs);
-        for (let [x,y] in pairs);
-        for (var [x,y] in pairs);
-        for ([x,y] in pairs);
-    }
-}
-
-unused: {
-    options = {
-        unused: true,
-    }
-    input: {
-        let { foo: [, , ...a] } = { foo: [1, 2, 3, 4], bar: 5 };
-        console.log(a);
-    }
-    expect: {
-        let { foo: [, , ...a] } = { foo: [1, 2, 3, 4], bar: 5 };
-        console.log(a);
-    }
-}
-
-issue_1886: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        let [a] = [1];
-        console.log(a);
-    }
-    expect: {
-        let [a] = [1];
-        console.log(a);
-    }
-}
-
-destructuring_decl_of_numeric_key: {
-    options = {
-        evaluate: true,
-        unused: true,
-    }
-    input: {
-        let { 3: x } = { [1 + 2]: 42 };
-        console.log(x);
-    }
-    expect: {
-        let { 3: x } = { [3]: 42 };
-        console.log(x);
-    }
-    expect_stdout: "42"
-    node_version: ">=6"
-}
-
-destructuring_decl_of_computed_key: {
-    options = {
-        evaluate: true,
-        unused: true,
-    }
-    input: {
-        let four = 4;
-        let { [7 - four]: x } = { [1 + 2]: 42 };
-        console.log(x);
-    }
-    expect: {
-        let four = 4;
-        let { [7 - four]: x } = { [3]: 42 };
-        console.log(x);
-    }
-    expect_stdout: "42"
-    node_version: ">=6"
-}
-
-destructuring_assign_of_numeric_key: {
-    options = {
-        evaluate: true,
-        unused: true,
-    }
-    input: {
-        let x;
-        ({ 3: x } = { [1 + 2]: 42 });
-        console.log(x);
-    }
-    expect: {
-        let x;
-        ({ 3: x } = { [3]: 42 });
-        console.log(x);
-    }
-    expect_stdout: "42"
-    node_version: ">=6"
-}
-
-destructuring_assign_of_computed_key: {
-    options = {
-        evaluate: true,
-        unused: true,
-    }
-    input: {
-        let x;
-        let four = 4;
-        ({ [(5 + 2) - four]: x } = { [1 + 2]: 42 });
-        console.log(x);
-    }
-    expect: {
-        let x;
-        let four = 4;
-        ({ [7 - four]: x } = { [3]: 42 });
-        console.log(x);
-    }
-    expect_stdout: "42"
-    node_version: ">=6"
-}
-
-mangle_destructuring_decl: {
-    options = {
-        evaluate: true,
-        unused: true,
-    }
-    mangle = {
-    }
-    input: {
-        function test(opts) {
-            let a = opts.a || { e: 7, n: 8 };
-            let { t, e, n, s =  5 + 4, o, r } = a;
-            console.log(t, e, n, s, o, r);
-        }
-        test({a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 }});
-        test({});
-    }
-    expect: {
-        function test(t) {
-            let e = t.a || { e: 7, n: 8 };
-            let {t: n,  e: o,  n: s,  s: l = 9,  o: a,  r: c} = e;
-            console.log(n, o, s, l, a, c);
-        }
-        test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } });
-        test({});
-    }
-    expect_stdout: [
-        "1 2 3 4 5 6",
-        "undefined 7 8 9 undefined undefined",
-    ]
-    node_version: ">=6"
-}
-
-mangle_destructuring_assign_toplevel_true: {
-    options = {
-        toplevel: true,
-        evaluate: true,
-        unused: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function test(opts) {
-            let s, o, r;
-            let a = opts.a || { e: 7, n: 8 };
-            ({ t, e, n, s =  5 + 4, o, r } = a);
-            console.log(t, e, n, s, o, r);
-        }
-        let t, e, n;
-        test({a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 }});
-        test({});
-    }
-    expect: {
-        function e(e) {
-            let l, s, a;
-            let c = e.a || { e: 7, n: 8 };
-            ({t: n,  e: o,  n: t,  s: l = 9,  o: s,  r: a} = c);
-            console.log(n, o, t, l, s, a);
-        }
-        let n, o, t;
-        e({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } });
-        e({});
-    }
-    expect_stdout: [
-        "1 2 3 4 5 6",
-        "undefined 7 8 9 undefined undefined",
-    ]
-    node_version: ">=6"
-}
-
-mangle_destructuring_assign_toplevel_false: {
-    options = {
-        toplevel: false,
-        evaluate: true,
-        unused: true,
-    }
-    mangle = {
-        toplevel: false,
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function test(opts) {
-            let s, o, r;
-            let a = opts.a || { e: 7, n: 8 };
-            ({ t, e, n, s = 9, o, r } = a);
-            console.log(t, e, n, s, o, r);
-        }
-        let t, e, n;
-        test({a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 }});
-        test({});
-    }
-    expect: {
-        function test(o) {
-            let s, l, a;
-            let c = o.a || { e: 7, n: 8 };
-            ({t,  e,  n,  s = 9,  o: l,  r: a} = c);
-            console.log(t, e, n, s, l, a);
-        }
-        let t, e, n;
-        test({ a: { t: 1, e: 2, n: 3, s: 4, o: 5, r: 6 } });
-        test({});
-    }
-    expect_stdout: [
-        "1 2 3 4 5 6",
-        "undefined 7 8 9 undefined undefined",
-    ]
-    node_version: ">=6"
-}
-
-mangle_destructuring_decl_array: {
-    options = {
-        evaluate: true,
-        unused: true,
-        toplevel: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        var [, t, e, n, s, o = 2, r = [ 1 + 2 ]] = [ 9, 8, 7, 6 ];
-        console.log(t, e, n, s, o, r);
-    }
-    expect: {
-        var [, o,  l,  a,  c,  e = 2,  g = [ 3 ]] = [ 9, 8, 7, 6 ];
-        console.log(o, l, a, c, e, g);
-    }
-    expect_stdout: "8 7 6 undefined 2 [ 3 ]"
-    node_version: ">=6"
-}
-
-anon_func_with_destructuring_args: {
-    options = {
-        evaluate: true,
-        unused: true,
-        toplevel: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    beautify = {
-        ecma: 5,
-    }
-    input: {
-        (function({foo = 1 + 0, bar = 2}, [car = 3, far = 4]) {
-            console.log(foo, bar, car, far);
-        })({bar: 5 - 0}, [, 6]);
-    }
-    expect: {
-        (function({foo: o = 1, bar: n = 2}, [a = 3, b = 4]) {
-            console.log(o, n, a, b);
-        })({bar: 5}, [, 6]);
-    }
-    expect_stdout: "1 5 3 6"
-    node_version: ">=6"
-}
-
-arrow_func_with_destructuring_args: {
-    options = {
-        evaluate: true,
-        unused: true,
-        toplevel: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    beautify = {
-        ecma: 5,
-    }
-    input: {
-        (({foo = 1 + 0, bar = 2}, [car = 3, far = 4]) => {
-            console.log(foo, bar, car, far);
-        })({bar: 5 - 0}, [, 6]);
-    }
-    expect: {
-        (({foo: o = 1, bar: a = 2}, [b = 3, l = 4]) => {
-            console.log(o, a, b, l);
-        })({bar: 5}, [, 6]);
-    }
-    expect_stdout: "1 5 3 6"
-    node_version: ">=6"
-}
-
-issue_2044_ecma_5: {
-    beautify = {
-        beautify: false,
-        ecma: 5,
-    }
-    input: {
-        ({x : a = 1, y = 2 + b, z = 3 - c} = obj);
-    }
-    expect_exact: "({x:a=1,y:y=2+b,z:z=3-c}=obj);"
-}
-
-issue_2044_ecma_6: {
-    beautify = {
-        beautify: false,
-        ecma: 6,
-    }
-    input: {
-        ({x : a = 1, y = 2 + b, z = 3 - c} = obj);
-    }
-    expect_exact: "({x:a=1,y=2+b,z=3-c}=obj);"
-}
-
-issue_2044_ecma_5_beautify: {
-    beautify = {
-        beautify: true,
-        ecma: 5,
-    }
-    input: {
-        ({x : a = 1, y = 2 + b, z = 3 - c} = obj);
-    }
-    expect_exact: "({x: a = 1, y: y = 2 + b, z: z = 3 - c} = obj);"
-}
-
-issue_2044_ecma_6_beautify: {
-    beautify = {
-        beautify: true,
-        ecma: 6,
-    }
-    input: {
-        ({x : a = 1, y = 2 + b, z = 3 - c} = obj);
-    }
-    expect_exact: "({x: a = 1, y = 2 + b, z = 3 - c} = obj);"
-}
-
-issue_2140: {
-    options = {
-        unused: true,
-    }
-    input: {
-        !function() {
-            var t = {};
-            console.log(([t.a] = [42])[0]);
-        }();
-    }
-    expect: {
-        !function() {
-            var t = {};
-            console.log(([t.a] = [42])[0]);
-        }();
-    }
-    expect_stdout: "42"
-    node_version: ">=6"
-}

test/compress/directives.js

@@ -1,10 +0,0 @@
-class_directives_compression: {
-    input: {
-        class foo {
-            foo() {
-                "use strict";
-            }
-        }
-    }
-    expect_exact: "class foo{foo(){}}"
-}

test/compress/drop-unused.js

@@ -164,87 +164,6 @@ used_var_in_catch: {
     }
 }
 
-unused_block_decls_in_catch: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {
-                let x = 10;
-                const y = 10;
-                class Zee {};
-            }
-        }
-    }
-    expect: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {}
-        }
-    }
-}
-
-used_block_decls_in_catch: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {
-                let x = 10;
-                const y = 10;
-                class Zee {};
-            }
-            console.log(x, y, Zee);
-        }
-    }
-    expect: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {}
-            console.log(x, y, Zee);
-        }
-    }
-}
-
-unused_block_decls: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            {
-                const x;
-            }
-            {
-                let y;
-            }
-            console.log(x, y);
-        }
-    }
-    expect: {
-        function foo() {
-            console.log(x, y);
-        }
-    }
-}
-
-unused_keep_harmony_destructuring: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            var {x, y} = foo;
-            var a = foo;
-        }
-    }
-    expect:  {
-        function foo() {
-            var {x, y} = foo;
-        }
-    }
-}
-
 keep_fnames: {
     options = { unused: true, keep_fnames: true, unsafe: true };
     input: {
@@ -730,37 +649,6 @@ 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,
@@ -897,10 +785,6 @@ issue_1709: {
                 var x = 1;
                 return x;
             }(),
-            function y() {
-                const y = 2;
-                return y;
-            }(),
             function z() {
                 function z() {}
                 return z;
@@ -913,10 +797,6 @@ issue_1709: {
                 var x = 1;
                 return x;
             }(),
-            function() {
-                const y = 2;
-                return y;
-            }(),
             function() {
                 function z() {}
                 return z;
@@ -1229,76 +1109,11 @@ var_catch_toplevel: {
     }
 }
 
-reassign_const: {
-    options = {
-        cascade: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            const a = 1;
-            a = 2;
-            return a;
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            const a = 1;
-            return a = 2, a;
-        }
-        console.log(f());
-    }
-    expect_stdout: true
-}
-
-issue_1968: {
-    options = {
-        unused: true,
-    }
-    input: {
-        function f(c) {
-            var a;
-            if (c) {
-                let b;
-                return (a = 2) + (b = 3);
-            }
-        }
-        console.log(f(1));
-    }
-    expect: {
-        function f(c) {
-            if (c) {
-                let b;
-                return 2 + (b = 3);
-            }
-        }
-        console.log(f(1));
-    }
-    expect_stdout: "5"
-    node_version: ">=6"
-}
-
-issue_2063: {
-    options = {
-        unused: true,
-    }
-    input: {
-        var a;
-        var a;
-    }
-    expect: {
-        var a;
-        var a;
-    }
-}
-
 issue_2105: {
     options = {
         collapse_vars: true,
         inline: true,
+        passes: 3,
         reduce_vars: true,
         side_effects: true,
         unused: true,
@@ -1324,7 +1139,7 @@ issue_2105: {
         });
     }
     expect: {
-        !void function() {
+        (function() {
             var quux = function() {
                 console.log("PASS");
             };
@@ -1334,95 +1149,7 @@ issue_2105: {
                     quux();
                 }
             };
-        }().prop();
+        })().prop();
     }
     expect_stdout: "PASS"
 }
-
-issue_2136_1: {
-    options = {
-        inline: true,
-        unused: true,
-    }
-    input: {
-        !function(a, ...b) {
-            console.log(b);
-        }();
-    }
-    expect: {
-        !function(a, ...b) {
-            console.log(b);
-        }();
-    }
-    expect_stdout: "[]"
-    node_version: ">=6"
-}
-
-issue_2136_2: {
-    options = {
-        collapse_vars: true,
-        inline: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            console.log(x);
-        }
-        !function(a, ...b) {
-            f(b[0]);
-        }(1, 2, 3);
-    }
-    expect: {
-        function f(x) {
-            console.log(x);
-        }
-        f([2,3][0]);
-    }
-    expect_stdout: "2"
-    node_version: ">=6"
-}
-
-issue_2136_3: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        inline: true,
-        passes: 3,
-        reduce_vars: true,
-        side_effects: true,
-        toplevel: true,
-        unsafe: true,
-        unused: true,
-    }
-    input: {
-        function f(x) {
-            console.log(x);
-        }
-        !function(a, ...b) {
-            f(b[0]);
-        }(1, 2, 3);
-    }
-    expect: {
-        console.log(2);
-    }
-    expect_stdout: "2"
-    node_version: ">=6"
-}
-
-issue_2163: {
-    options = {
-        pure_funcs: [ "pure" ],
-        side_effects: true,
-    }
-    input: {
-        var c;
-        /*@__PURE__*/f(...a);
-        pure(b, ...c);
-    }
-    expect: {
-        var c;
-        a;
-        b;
-    }
-}

test/compress/evaluate.js

@@ -224,100 +224,6 @@ positive_zero: {
     expect_stdout: true
 }
 
-pow: {
-    options = { evaluate: true }
-    input: {
-        var a = 5 ** 3;
-    }
-    expect: {
-        var a = 125;
-    }
-}
-
-pow_sequence: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 2 ** 3 ** 2;
-    }
-    expect: {
-        var a = 512;
-    }
-}
-
-pow_mixed: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 5 + 2 ** 3 + 5;
-        var b = 5 * 3 ** 2;
-        var c = 5 ** 3 * 2;
-        var d = 5 ** +3;
-    }
-    expect: {
-        var a = 18;
-        var b = 45;
-        var c = 250;
-        var d = 125;
-    }
-}
-
-pow_with_right_side_evaluating_to_unary: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = (4 - 7) ** foo;
-        var b = ++bar ** 3;
-        var c = --baz ** 2;
-    }
-    expect_exact: "var a=(-3)**foo;var b=++bar**3;var c=--baz**2;"
-}
-
-pow_with_number_constants: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 5 ** NaN;
-        /* NaN exponent results to NaN */
-        var b = 42 ** +0;
-        /* +0 exponent results to NaN */
-        var c = 42 ** -0;
-        /* -0 exponent results to NaN */
-        var d = NaN ** 1;
-        /* NaN with non-zero exponent is NaN */
-        var e = 2 ** Infinity;
-        /* abs(base) > 1 with Infinity as exponent is Infinity */
-        var f = 2 ** -Infinity;
-        /* abs(base) > 1 with -Infinity as exponent is +0 */
-        var g = (-7) ** (0.5);
-        var h = 2324334 ** 34343443;
-        var i = (-2324334) ** 34343443;
-        var j = 2 ** (-3);
-        var k = 2.0 ** -3;
-        var l = 2.0 ** (5 - 7);
-        var m = 3 ** -10;  // Result will be 0.000016935087808430286, which is too long
-    }
-    expect: {
-        var a = NaN;
-        var b = 1;
-        var c = 1;
-        var d = NaN;
-        var e = 1/0;
-        var f = 0;
-        var g = NaN;
-        var h = 1/0;
-        var i = -1/0;
-        var j = .125;
-        var k = .125;
-        var l = .25;
-        var m = 3 ** -10;
-    }
-}
-
 unsafe_constant: {
     options = {
         evaluate  : true,
@@ -740,16 +646,17 @@ call_args: {
         evaluate: true,
         inline: true,
         reduce_vars: true,
+        toplevel: true,
     }
     input: {
-        const a = 1;
+        var a = 1;
         console.log(a);
         +function(a) {
             return a;
         }(a);
     }
     expect: {
-        const a = 1;
+        var a = 1;
         console.log(1);
         +(1, 1);
     }
@@ -762,17 +669,17 @@ call_args_drop_param: {
         inline: true,
         keep_fargs: false,
         reduce_vars: true,
+        toplevel: true,
         unused: true,
     }
     input: {
-        const a = 1;
+        var a = 1;
         console.log(a);
         +function(a) {
             return a;
         }(a, b);
     }
     expect: {
-        const a = 1;
         console.log(1);
         +(b, 1);
     }

test/compress/expansions.js

@@ -1,28 +0,0 @@
-
-expand_arguments: {
-    input: {
-        func(a, ...rest);
-        func(...all);
-    }
-    expect_exact: "func(a,...rest);func(...all);"
-}
-
-expand_expression_arguments: {
-    input: {
-        f(...a.b);
-        f(...a.b());
-        f(...(a));
-        f(...(a.b));
-        f(...a[i]);
-    }
-    expect_exact: "f(...a.b);f(...a.b());f(...a);f(...a.b);f(...a[i]);"
-}
-
-expand_parameters: {
-    input: {
-        (function (a, ...b){});
-        (function (...args){});
-    }
-    expect_exact: "(function(a,...b){});(function(...args){});"
-}
-

test/compress/export.js

@@ -1,228 +0,0 @@
-issue_2038_1: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export var V = 1;
-        export let L = 2;
-        export const C = 3;
-    }
-    expect: {
-        export var V = 1;
-        export let L = 2;
-        export const C = 3;
-    }
-}
-
-issue_2038_2: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        let LET = 1;
-        const CONST = 2;
-        var VAR = 3;
-        export { LET, CONST, VAR };
-    }
-    expect: {
-        let t = 1;
-        const e = 2;
-        var o = 3;
-        export { t as LET, e as CONST, o as VAR };
-    }
-}
-
-issue_2126: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        import { foo as bar, cat as dog } from "stuff";
-        console.log(bar, dog);
-        export { bar as qux };
-        export { dog };
-    }
-    expect: {
-        import { foo as o, cat as s } from "stuff";
-        console.log(o, s);
-        export { o as qux };
-        export { s as dog };
-    }
-}
-
-beautify: {
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        export { A as B, C as D };
-    }
-    expect_exact: "export { A as B, C as D };"
-}
-
-issue_2131: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function no() {
-            console.log(42);
-        }
-        function go() {
-            console.log(42);
-        }
-        var X = 1, Y = 2;
-        export function main() {
-            go(X);
-        };
-    }
-    expect: {
-        function go() {
-            console.log(42);
-        }
-        var X = 1;
-        export function main() {
-            go(X);
-        };
-    }
-}
-
-issue_2129: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export const { keys } = Object;
-    }
-    expect: {
-        export const { keys } = Object;
-    }
-}
-
-async_func: {
-    options = {
-        keep_fargs: false,
-        unused: true,
-    }
-    input: {
-        export async function Foo(x){};
-    }
-    expect: {
-        export async function Foo(){};
-    }
-}
-
-issue_2134_1: {
-    options = {
-        keep_fargs: false,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export function Foo(x){};
-        Foo.prototype = {};
-    }
-    expect: {
-        export function Foo(){};
-        Foo.prototype = {};
-    }
-}
-
-issue_2134_2: {
-    options = {
-        keep_fargs: false,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export async function Foo(x){};
-        Foo.prototype = {};
-    }
-    expect: {
-        export async function Foo(){};
-        Foo.prototype = {};
-    }
-}
-
-redirection: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        let foo = 1, bar = 2;
-        export { foo as delete };
-        export { bar as default };
-        export { foo as var } from "module.js";
-    }
-    expect: {
-        let e = 1, o = 2;
-        export { e as delete };
-        export { o as default };
-        export { foo as var } from "module.js";
-    }
-}
-
-keyword_invalid_1: {
-    input: {
-        export { default };
-    }
-    expect: {
-        export { default };
-    }
-}
-
-keyword_invalid_2: {
-    input: {
-        export { default as Alias };
-    }
-    expect: {
-        export { default as Alias };
-    }
-}
-
-keyword_invalid_3: {
-    input: {
-        export { default as default };
-    }
-    expect: {
-        export { default as default };
-    }
-}
-
-keyword_valid_1: {
-    input: {
-        export { default } from "module.js";
-    }
-    expect: {
-        export { default } from "module.js";
-    }
-}
-
-keyword_valid_2: {
-    input: {
-        export { default as Alias } from "module.js";
-    }
-    expect: {
-        export { default as Alias } from "module.js";
-    }
-}
-
-keyword_valid_3: {
-    input: {
-        export { default as default } from "module.js";
-    }
-    expect: {
-        export { default as default } from "module.js";
-    }
-}

test/compress/expression.js

@@ -1,52 +0,0 @@
-pow: {
-    input: {
-        var a = 2 ** 7;
-        var b = 3;
-        b **= 2;
-    }
-    expect: {
-        var a = 2 ** 7;
-        var b = 3;
-        b **= 2;
-    }
-}
-
-pow_with_number_constants: {
-    input: {
-        var a = 5 ** NaN;
-        var b = 42 ** +0;
-        var c = 42 ** -0;
-        var d = NaN ** 1;
-        var e = 2 ** Infinity;
-        var f = 2 ** -Infinity;
-    }
-    expect: {
-        var a = 5 ** NaN;
-        var b = 42 ** +0;
-        var c = 42 ** -0;
-        var d = NaN ** 1;
-        var e = 2 ** (1/0);
-        var f = 2 ** (-1/0);
-    }
-}
-
-pow_with_parentheses: {
-    input: {
-        var g = (-7) ** (0.5);
-        var h = 2324334 ** 34343443;
-        var i = (-2324334) ** 34343443;
-        var j = 2 ** (-3);
-        var k = 2.0 ** -3;
-        var l = 2.0 ** (5 - 7);
-    }
-    expect_exact: "var g=(-7)**.5;var h=2324334**34343443;var i=(-2324334)**34343443;var j=2**-3;var k=2**-3;var l=2**(5-7);"
-}
-
-pow_with_unary_between_brackets: {
-    input: {
-        var a = (-(+5)) ** 3;
-    }
-    expect: {
-        var a = (-+5)**3;
-    }
-}

test/compress/functions.js

@@ -189,25 +189,25 @@ hoist_funs: {
         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);
-            function f() {}
             console.log(5, typeof f, typeof g);
         }
         console.log(6, typeof f, typeof g);
     }
     expect_stdout: [
-        "1 'undefined' 'function'",
-        "2 'undefined' 'function'",
+        "1 'function' 'function'",
+        "2 'function' 'function'",
         "4 'function' 'function'",
         "5 'function' 'function'",
         "6 'function' 'function'",
     ]
-    node_version: ">=6"
+    node_version: "<=4"
 }
 
 hoist_funs_strict: {
@@ -468,11 +468,9 @@ issue_2114_1: {
     }
     expect: {
         var c = 0;
-        !function() {
-            0;
-        }((c += 1, c = 1 + c, function() {
+        c = 1 + (c += 1), function() {
             var b = void (b && (b.b += (c += 1, 0)));
-        }()));
+        }();
         console.log(c);
     }
     expect_stdout: "2"

test/compress/global_defs.js

@@ -120,7 +120,7 @@ mixed: {
         properties: true,
     }
     input: {
-        const FOO = { BAR: 0 };
+        var FOO = { BAR: 0 };
         console.log(FOO.BAR);
         console.log(++CONFIG.DEBUG);
         console.log(++CONFIG.VALUE);
@@ -130,7 +130,7 @@ mixed: {
         console.log(CONFIG);
     }
     expect: {
-        const FOO = { BAR: 0 };
+        var FOO = { BAR: 0 };
         console.log("moo");
         console.log(++CONFIG.DEBUG);
         console.log(++CONFIG.VALUE);

test/compress/harmony.js

@@ -1,697 +0,0 @@
-arrow_function_parens: {
-    input: {
-        something && (() => {});
-    }
-    expect_exact: "something&&(()=>{});"
-}
-arrow_function_parens_2: {
-    input: {
-        (() => null)();
-    }
-    expect_exact: "(()=>null)();"
-}
-
-typeof_arrow_functions: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = typeof (x => null);
-        console.log(foo);
-    }
-    expect_exact: "var foo=\"function\";console.log(foo);"
-    expect_stdout: "function"
-    node_version: ">=4"
-}
-
-classes: {
-    input: {
-        class SomeClass {
-            constructor() {
-            };
-            foo() {};
-        };
-        class NoSemi {
-            constructor(...args) {
-            }
-            foo() {}
-        };
-        class ChildClass extends SomeClass {};
-        var asExpression = class AsExpression {};
-        var nameless = class {};
-    }
-    expect_exact: "class SomeClass{constructor(){}foo(){}}class NoSemi{constructor(...args){}foo(){}}class ChildClass extends SomeClass{}var asExpression=class AsExpression{};var nameless=class{};"
-}
-
-class_statics: {
-    input: {
-        x = class {
-            static staticMethod() {}
-            static get foo() {}
-            static set bar() {}
-            static() { /* "static" can be a method name! */ }
-            get() { /* "get" can be a method name! */ }
-            set() { /* "set" can be a method name! */ }
-        }
-    }
-    expect_exact: "x=class{static staticMethod(){}static get foo(){}static set bar(){}static(){}get(){}set(){}};"
-}
-
-class_name_can_be_mangled: {
-    mangle = { };
-    input: {
-        function x() {
-            class Foo {
-            }
-            var class1 = Foo;
-            var class2 = class Bar {};
-        }
-    }
-    expect: {
-        function x() {
-            class a { }
-            var s = a;
-            var c = class a {};
-        }
-    }
-}
-
-class_name_can_be_preserved: {
-    mangle = {
-        keep_classnames: true
-    }
-    input: {
-        function x() {
-            (class Baz { });
-            class Foo {};
-        }
-    }
-    expect: {
-        function x() {
-            (class Baz { });
-            class Foo {};
-        }
-    }
-}
-
-classes_can_have_generators: {
-    input: {
-        class Foo {
-            *bar() {}
-            static *baz() {}
-        }
-    }
-    expect: {
-        class Foo {
-            *bar() {}
-            static *baz() {}
-        }
-    }
-}
-
-classes_can_have_computed_generators: {
-    input: {
-        class C4 {
-            *['constructor']() {}
-        }
-    }
-    expect: {
-        class C4 {
-            *['constructor']() {}
-        }
-    }
-}
-
-classes_can_have_computed_static: {
-    input: {
-        class C4 {
-            static ['constructor']() {}
-        }
-    }
-    expect: {
-        class C4 {
-            static ['constructor']() {}
-        }
-    }
-}
-
-class_methods_and_getters_with_keep_quoted_props_enabled: {
-    beautify = {
-        quote_style: 3,
-        keep_quoted_props: true,
-    }
-    input: {
-        class clss {
-            a() {}
-            "b"() {}
-            get c() { return "c"}
-            get "d"() { return "d"}
-            set e(a) { doSomething(a); }
-            set 'f'(a) { doSomething(b); }
-            static g() {}
-            static "h"() {}
-        }
-    }
-    expect_exact: 'class clss{a(){}"b"(){}get c(){return"c"}get"d"(){return"d"}set e(a){doSomething(a)}set\'f\'(a){doSomething(b)}static g(){}static"h"(){}}'
-}
-
-classes_with_expression_as_expand: {
-    input: {
-        class D extends (calls++, C) {}
-    }
-    expect_exact: "class D extends(calls++,C){}"
-}
-
-new_target: {
-    input: {
-        new.target;
-        new.target.name;
-    }
-    expect_exact: "new.target;new.target.name;"
-}
-
-number_literals: {
-    input: {
-        0b1001;
-        0B1001;
-        0o11;
-        0O11;
-    }
-
-    expect: {
-        9;
-        9;
-        9;
-        9;
-    }
-}
-
-import_statement: {
-    input: {
-        import "mod-name";
-        import Foo from "bar";
-        import { Bar, Baz } from 'lel';
-        import Bar, { Foo } from 'lel';
-        import { Bar as kex, Baz as food } from 'lel';
-    }
-    expect_exact: 'import"mod-name";import Foo from"bar";import{Bar,Baz}from"lel";import Bar,{Foo}from"lel";import{Bar as kex,Baz as food}from"lel";'
-}
-
-import_all_statement: {
-    input: {
-        import * from 'lel';
-        import * as Lel from 'lel';
-    }
-    expect_exact: 'import*from"lel";import*as Lel from"lel";'
-}
-
-export_statement: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        export default 1 + 2;
-        export var foo = 4;
-        export let foo = 6;
-        export const foo = 6;
-        export function foo() {};
-        export class foo { };
-    }
-    expect_exact: "export default 3;export var foo=4;export let foo=6;export const foo=6;export function foo(){};export class foo{};"
-}
-
-export_default_object_expression: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        export default {
-            foo: 1 + 2,
-            bar() { return 4; },
-            get baz() { return this.foo; },
-        };
-    }
-    expect_exact: "export default{foo:3,bar(){return 4},get baz(){return this.foo}};"
-}
-
-export_default_array: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        export default [ 1 + 2, foo ];
-    }
-    expect_exact: "export default[3,foo];"
-}
-
-export_default_anon_function: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        export default function(){
-            console.log(1 + 2);
-        }
-    }
-    expect_exact: "export default function(){console.log(3)};"
-}
-
-export_default_anon_class: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        export default class {
-            foo() { console.log(1 + 2); }
-        }
-    }
-    expect_exact: "export default class{foo(){console.log(3)}};"
-}
-
-export_module_statement: {
-    input: {
-        export * from "a.js";
-        export {A} from "a.js";
-        export {A, B} from "a.js";
-        export {C};
-    }
-    expect_exact: 'export*from"a.js";export{A}from"a.js";export{A,B}from"a.js";export{C};'
-}
-
-import_statement_mangling: {
-    mangle = { toplevel: true };
-    input: {
-        import Foo from "foo";
-        import Bar, {Food} from "lel";
-        import {What as Whatever} from "lel";
-        Foo();
-        Bar();
-        Food();
-        Whatever();
-    }
-    expect: {
-        import o from "foo";
-        import m, {Food as r} from "lel";
-        import {What as f} from "lel";
-        o();
-        m();
-        r();
-        f();
-    }
-}
-
-export_statement_mangling: {
-    mangle = { };
-    input: {
-        export var foo = 6;
-        export function bar() { }
-        export class Baz { }
-        bar(foo, Baz)
-    }
-    expect: {
-        export var foo = 6;
-        export function bar() { }
-        export class Baz { }
-        bar(foo, Baz)
-    }
-}
-
-// https://github.com/mishoo/UglifyJS2/issues/1021
-regression_for_of_const: {
-    input: {
-        for (const x of y) {}
-        for (const x in y) {}
-    }
-    expect: {
-        for (const x of y);for (const x in y);
-    }
-}
-
-// Fabio: My patches accidentally caused a crash whenever
-// there's an extraneous set of parens around an object.
-regression_cannot_destructure: {
-    input: {
-        var x = ({ x : 3 });
-        x(({ x: 3 }));
-    }
-    expect_exact: "var x={x:3};x({x:3});";
-}
-
-regression_cannot_use_of: {
-    input: {
-        function of() {
-        }
-        var of = "is a valid variable name";
-        of = { of: "is ok" };
-        x.of;
-        of: foo()
-    }
-    expect: {
-        function of(){}
-        var of="is a valid variable name";
-        of={of:"is ok"};
-        x.of;
-        foo();  /* Label statement missing? No prob. */
-    }
-}
-
-fat_arrow_as_param: {
-    input: {
-        foo(x => x);
-        foo(x => x, y => y);
-
-        foo(x => (x, x));
-        foo(x => (x, x), y => (y, y));
-    }
-    expect_exact: "foo(x=>x);foo(x=>x,y=>y);foo(x=>(x,x));foo(x=>(x,x),y=>(y,y));"
-}
-
-default_assign: {
-    options = {
-        keep_fargs: false,
-        unused: true,
-    }
-    input: {
-        function f(a, b = 3) {
-            console.log(a);
-        }
-
-        g = ([[] = 123]) => {};
-        h = ([[x, y, z] = [4, 5, 6]] = []) => {};
-
-        function i([[x, y, z] = [4, 5, 6]] = []) {
-            console.log(b);
-        };
-    }
-    expect: {
-        function f(a) {
-            console.log(a);
-        }
-
-        g = ([[] = 123]) => {};
-        h = ([[x, y, z] = [4, 5, 6]] = []) => {};
-
-        function i([[x, y, z] = [4, 5, 6]] = []) {
-            console.log(b);
-        };
-    }
-}
-
-expansion: {
-    options = {
-        keep_fargs: false,
-        unused: true,
-    }
-    input: {
-        function f(a, ...b) {
-            console.log(a);
-        }
-    }
-    expect: {
-        function f(a) {
-            console.log(a);
-        }
-    }
-}
-
-issue_1613: {
-  mangle = { toplevel: true };
-  input: {
-    const name = 1;
-    const foo = {
-      name
-    };
-  }
-  expect_exact: "const n=1;const c={name:n};"
-}
-
-format_methods: {
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        class A extends B {constructor(a){x()} static s(b,c){y()} run(d,e,f){z()}}
-    }
-    expect_exact: [
-        "class A extends B {",
-        "    constructor(a) {",
-        "        x();",
-        "    }",
-        "    static s(b, c) {",
-        "        y();",
-        "    }",
-        "    run(d, e, f) {",
-        "        z();",
-        "    }",
-        "}",
-    ]
-}
-
-issue_1898: {
-    options = {
-    }
-    mangle = {
-    }
-    input: {
-        class Foo {
-            bar() {
-                for (const x of [ 6, 5 ]) {
-                    for (let y of [ 4, 3 ]) {
-                        for (var z of [ 2, 1 ]) {
-                            console.log(x, y, z);
-                        }
-                    }
-                }
-            }
-        }
-        new Foo().bar();
-    }
-    expect: {
-        class Foo {
-            bar() {
-                for (const f of [ 6, 5 ])
-                    for (let r of [ 4, 3 ])
-                        for (var o of [ 2, 1 ])
-                            console.log(f, r, o);
-            }
-        }
-        new Foo().bar();
-    }
-}
-
-issue_1753: {
-    mangle = { safari10: true };
-    input: {
-        class SomeClass {
-            constructor(props) {
-                let pickedSets = [];
-                for (let i = 0; i < 6; i++) {
-                    pickedSets.push({
-                        mainDrawNumbers: [],
-                        extraDrawNumbers: []
-                    });
-                }
-            }
-        }
-    }
-    expect: {
-        class SomeClass {
-            constructor(r) {
-                let s = [];
-                for (let a = 0; a < 6; a++)
-                    s.push({
-                        mainDrawNumbers: [],
-                        extraDrawNumbers: []
-                    });
-            }
-        }
-    }
-}
-
-issue_1753_disable: {
-    mangle = { safari10: false }
-    input: {
-        class SomeClass {
-            constructor(props) {
-                let pickedSets = [];
-                for (let i = 0; i < 6; i++) {
-                    pickedSets.push({
-                        mainDrawNumbers: [],
-                        extraDrawNumbers: []
-                    });
-                }
-            }
-        }
-    }
-    expect: {
-        class SomeClass {
-            constructor(r) {
-                let s = [];
-                for (let r = 0; r < 6; r++)
-                    s.push({
-                        mainDrawNumbers: [],
-                        extraDrawNumbers: []
-                    });
-            }
-        }
-    }
-}
-
-class_extends: {
-    options = {
-        evaluate: true,
-    }
-    input: {
-        function f() {
-            class foo extends bar {}
-            class pro extends some.prop {}
-            class arr extends stuff[1 - 1] {}
-            class bin extends (a || b) {}
-            class seq extends (a, b) {}
-            class ter extends (a ? b : c) {}
-            class uni extends (!0) {}
-        }
-    }
-    expect_exact: "function f(){class foo extends bar{}class pro extends some.prop{}class arr extends stuff[0]{}class bin extends(a||b){}class seq extends(a,b){}class ter extends(a?b:c){}class uni extends(!0){}}"
-}
-
-class_extends_class: {
-    options = {
-    }
-    input: {
-        class anon extends class {} {}
-        class named extends class base {} {}
-    }
-    expect_exact: "class anon extends class{}{}class named extends class base{}{}"
-}
-
-class_extends_function: {
-    options = {
-    }
-    input: {
-        class anon extends function(){} {}
-        class named extends function base(){} {}
-    }
-    expect_exact: "class anon extends function(){}{}class named extends function base(){}{}"
-}
-
-class_extends_regex: {
-    options = {
-    }
-    input: {
-        function f() {
-            class rx1 extends (/rx/) {}
-            // class rx2 extends /rx/ {}  // FIXME - parse error
-        }
-    }
-    expect_exact: "function f(){class rx1 extends(/rx/){}}"
-}
-
-issue_2028: {
-    options = {
-        side_effects: true,
-    }
-    input: {
-        var a = {};
-        (function(x) {
-            x.X = function() {
-                return X;
-            };
-            class X {
-                static hello() {
-                    console.log("hello");
-                }
-            }
-        }(a));
-        a.X().hello();
-    }
-    expect: {
-        var a = {};
-        (function(x) {
-            x.X = function() {
-                return X;
-            };
-            class X {
-                static hello() {
-                    console.log("hello");
-                }
-            }
-        }(a));
-        a.X().hello();
-    }
-    expect_stdout: "hello"
-    node_version: ">=6"
-}
-
-class_expression_statement: {
-    options = {
-        toplevel: false,
-        side_effects: false,
-        unused: false,
-    }
-    input: {
-        (class {});
-        (class NamedClassExpr {});
-        let expr = (class AnotherClassExpr {});
-        class C {}
-    }
-    expect_exact: "(class{});(class NamedClassExpr{});let expr=class AnotherClassExpr{};class C{}"
-}
-
-class_expression_statement_unused: {
-    options = {
-        toplevel: false,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        (class {});
-        (class NamedClassExpr {});
-        let expr = (class AnotherClassExpr {});
-        class C {}
-    }
-    expect_exact: "let expr=class{};class C{}"
-}
-
-class_expression_statement_unused_toplevel: {
-    options = {
-        toplevel: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        (class {});
-        (class NamedClassExpr {});
-        let expr = (class AnotherClassExpr {});
-        class C {}
-    }
-    expect_exact: ""
-}
-
-export_default_function_decl: {
-    options = {
-        toplevel: true,
-        passes: 3,
-        unused: true,
-    }
-    input: {
-        // do not drop "unused" exports
-        export default function Foo() {};
-        export function Far() {};
-    }
-    expect_exact: "export default function Foo(){};export function Far(){};"
-}
-
-export_default_class_decl: {
-    options = {
-        toplevel: true,
-        passes: 3,
-        unused: true,
-    }
-    input: {
-        // do not drop "unused" exports
-        export default class Car {};
-        export class Cab {};
-    }
-    expect_exact: "export default class Car{};export class Cab{};"
-}

test/compress/hoist.js

@@ -1,85 +0,0 @@
-
-hoist_vars: {
-    options = {
-        hoist_vars: true
-    }
-    input: {
-        function a() {
-            bar();
-            var var1;
-            var var2;
-        }
-        function b(anArg) {
-            bar();
-            var var1;
-            var anArg;
-        }
-    }
-    expect: {
-        function a() {
-            var var1, var2;  // Vars go up and are joined
-            bar();
-        }
-        function b(anArg) {
-            var var1;
-            bar();
-            // But vars named like arguments go away!
-        }
-    }
-}
-
-hoist_funs: {
-    options = {
-        hoist_funs: true
-    }
-    input: {
-        function a() {
-            bar();
-            function foo() {}
-        }
-    }
-    expect: {
-        function a() {
-            function foo() {}  // Funs go up
-            bar();
-        }
-    }
-}
-
-hoist_no_destructurings: {
-    options = {
-        hoist_vars: true,
-        hoist_funs: true
-    }
-    input: {
-        function a([anArg]) {
-            bar();
-            var var1;
-            var anArg;  // Because anArg is already declared, this goes away!
-        }
-    }
-    expect: {
-        function a([anArg]) {
-            var var1;
-            bar();
-        }
-    }
-}
-
-dont_hoist_var_destructurings: {
-    options = {
-        hoist_vars: true,
-        hoist_funs: true
-    }
-    input: {
-        function x() {
-            // If foo is null or undefined, this should be an exception
-            var {x,y} = foo;
-        }
-    }
-    expect: {
-        function x() {
-            var {x,y} = foo;
-        }
-    }
-}

test/compress/html_comments.js

@@ -53,12 +53,3 @@ html_comment_in_string_literal: {
     }
     expect_exact: 'function f(){return"\\x3c!--HTML--\\x3ecomment in\\x3c!--string literal--\\x3e"}';
 }
-
-html_comment_after_multiline_comment: {
-    input: {
-        var foo; /*
-*/-->   var bar;
-        var foobar;
-    }
-    expect_exact: "var foo;var foobar;"
-}

test/compress/if_return.js

@@ -326,61 +326,3 @@ issue_512: {
         }
     }
 }
-
-issue_1317: {
-    options = {
-        if_return: true,
-    }
-    input: {
-        !function(a) {
-            if (a) return;
-            let b = 1;
-            function g() {
-                return b;
-            }
-            console.log(g());
-        }();
-    }
-    expect: {
-        !function(a) {
-            if (a) return;
-            let b = 1;
-            function g() {
-                return b;
-            }
-            console.log(g());
-        }();
-    }
-    expect_stdout: "1"
-    node_version: ">=6"
-}
-
-issue_1317_strict: {
-    options = {
-        if_return: true,
-    }
-    input: {
-        "use strict";
-        !function(a) {
-            if (a) return;
-            let b = 1;
-            function g() {
-                return b;
-            }
-            console.log(g());
-        }();
-    }
-    expect: {
-        "use strict";
-        !function(a) {
-            if (a) return;
-            let b = 1;
-            function g() {
-                return b;
-            }
-            console.log(g());
-        }();
-    }
-    expect_stdout: "1"
-    node_version: ">=4"
-}

test/compress/issue-1001.js

@@ -1,8 +0,0 @@
-parenthesis_strings_in_parenthesis: {
-    input: {
-        var foo = ('(');
-        a(')');
-
-    }
-    expect_exact: 'var foo="(";a(")");'
-}

test/compress/issue-1041.js

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

test/compress/issue-1043.js

@@ -1,30 +0,0 @@
-issue_1043: {
-    options = {
-        side_effects: true
-    };
-
-    input: {
-        function* range(start = 0, end = null, step = 1) {
-            if (end == null) {
-                end = start;
-                start = 0;
-            }
-
-            for (let i = start; i < end; i += step) {
-                yield i;
-            }
-        }
-    }
-
-    expect: {
-        function* range(start = 0, end = null, step = 1) {
-            if (null == end) {
-                end = start;
-                start = 0;
-            }
-
-            for (let i = start; i < end; i += step)
-                yield i;
-        }
-    }
-}

test/compress/issue-1044.js

@@ -1,9 +0,0 @@
-issue_1044: {
-    options = { evaluate: true, conditionals: true };
-    input: {
-        const mixed = Base ? class extends Base {} : class {}
-    }
-    expect: {
-        const mixed = Base ? class extends Base {} : class {}
-    }
-}

test/compress/issue-1052.js

@@ -134,8 +134,9 @@ defun_hoist_funs: {
     expect: {
         function e() {
             function f() {}
+            function g() {}
             function h() {}
-            if (window) function g() {}
+            if (window);
         }
     }
 }

test/compress/issue-1212.js

@@ -1,76 +0,0 @@
-issue_1212_debug_false: {
-    options = {
-        global_defs   : { DEBUG: false },
-        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: {
-        class foo {
-            bar() {
-                if (DEBUG)
-                    console.log("DEV");
-                else
-                    console.log("PROD");
-            }
-        }
-        new foo().bar();
-    }
-    expect: {
-        class foo{
-            bar() { console.log("PROD") }
-        }
-        (new foo).bar();
-    }
-}
-
-issue_1212_debug_true: {
-    options = {
-        global_defs   : { DEBUG: 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: {
-        class foo {
-            bar() {
-                if (DEBUG)
-                    console.log("DEV");
-                else
-                    console.log("PROD");
-            }
-        }
-        new foo().bar();
-    }
-    expect: {
-        class foo{
-            bar() { console.log("DEV") }
-        }
-        (new foo).bar();
-    }
-}
-

test/compress/issue-1466.js

@@ -1,291 +0,0 @@
-same_variable_in_multiple_for_loop: {
-    options = {
-        hoist_funs: true,
-        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: true,
-    }
-    mangle = {}
-    input: {
-        for (let i = 0; i < 3; i++) {
-            let a = 100;
-            console.log(i, a);
-            for (let i = 0; i < 2; i++) {
-                console.log(i, a);
-                let c = 2;
-                console.log(c);
-            }
-        }
-    }
-    expect: {
-        for (let o = 0; o < 3; o++) {
-            let l = 100;
-            console.log(o, l);
-            for (let o = 0; o < 2; o++) {
-                console.log(o, l);
-                let e = 2;
-                console.log(e);
-            }
-        }
-    }
-    expect_stdout: true
-}
-
-same_variable_in_multiple_forOf: {
-    options = {
-        hoist_funs: true,
-        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: true,
-    }
-    mangle = {}
-    input: {
-        var test = [ "a", "b", "c" ];
-        for (let tmp of test) {
-            console.log(tmp);
-            let dd;
-            dd = [ "e", "f", "g" ];
-            for (let tmp of dd) {
-                console.log(tmp);
-            }
-        }
-    }
-    expect: {
-        var test = [ "a", "b", "c" ];
-        for (let o of test) {
-            console.log(o);
-            let e;
-            e = [ "e", "f", "g" ];
-            for (let o of e)
-                console.log(o);
-        }
-    }
-    expect_stdout: true
-}
-
-same_variable_in_multiple_forIn: {
-    options = {
-        hoist_funs: true,
-        dead_code: true,
-        conditionals: true,
-        comparisons: true,
-        evaluate: true,
-        booleans: true,
-        loops: true,
-        unused: false,
-        keep_fargs: true,
-        if_return: true,
-        join_vars: true,
-        cascade: true,
-        side_effects: true,
-        collapse_vars: true,
-    }
-    mangle = {}
-    input: {
-        var test = [ "a", "b", "c" ];
-        for (let tmp in test) {
-            console.log(tmp);
-            let dd;
-            dd = [ "e", "f", "g" ];
-            for (let tmp in test) {
-                console.log(tmp);
-            }
-        }
-    }
-    expect: {
-        var test = [ "a", "b", "c" ];
-        for (let e in test) {
-            console.log(e);
-            let t;
-            t = [ "e", "f", "g" ];
-            for (let e in test)
-                console.log(e);
-        }
-    }
-    expect_stdout: true
-}
-
-different_variable_in_multiple_for_loop: {
-    options = {
-        hoist_funs: true,
-        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: true,
-    }
-    mangle = {}
-    input: {
-        for (let i = 0; i < 3; i++) {
-            let a = 100;
-            console.log(i, a);
-            for (let j = 0; j < 2; j++) {
-                console.log(j, a);
-                let c = 2;
-                console.log(c);
-            }
-        }
-    }
-    expect: {
-        for (let o = 0; o < 3; o++) {
-            let l = 100;
-            console.log(o, l);
-            for (let o = 0; o < 2; o++) {
-                console.log(o, l);
-                let e = 2;
-                console.log(e);
-            }
-        }
-    }
-    expect_stdout: true
-}
-
-different_variable_in_multiple_forOf: {
-    options = {
-        hoist_funs: true,
-        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: true,
-    }
-    mangle = {}
-    input: {
-        var test = [ "a", "b", "c" ];
-        for (let tmp of test) {
-            console.log(tmp);
-            let dd;
-            dd = [ "e", "f", "g" ];
-            for (let t of dd) {
-                console.log(t);
-            }
-        }
-    }
-    expect: {
-        var test = [ "a", "b", "c" ];
-        for (let o of test) {
-            console.log(o);
-            let e;
-            e = [ "e", "f", "g" ];
-            for (let o of e)
-                console.log(o);
-        }
-    }
-    expect_stdout: true
-}
-
-different_variable_in_multiple_forIn: {
-    options = {
-        hoist_funs: true,
-        dead_code: true,
-        conditionals: true,
-        comparisons: true,
-        evaluate: true,
-        booleans: true,
-        loops: true,
-        unused: false,
-        keep_fargs: true,
-        if_return: true,
-        join_vars: true,
-        cascade: true,
-        side_effects: true,
-        collapse_vars: true,
-    }
-    mangle = {}
-    input: {
-        var test = [ "a", "b", "c" ];
-        for (let tmp in test) {
-            console.log(tmp);
-            let dd;
-            dd = [ "e", "f", "g" ];
-            for (let t in test) {
-                console.log(t);
-            }
-        }
-    }
-    expect: {
-        var test = [ "a", "b", "c" ];
-        for (let e in test) {
-            console.log(e);
-            let t;
-            t = [ "e", "f", "g" ];
-            for (let e in test)
-                console.log(e);
-        }
-    }
-    expect_stdout: true
-}
-
-more_variable_in_multiple_for: {
-    options = {
-        hoist_funs: true,
-        dead_code: true,
-        conditionals: true,
-        comparisons: true,
-        evaluate: true,
-        booleans: true,
-        loops: true,
-        unused: false,
-        keep_fargs: true,
-        if_return: true,
-        join_vars: true,
-        cascade: true,
-        side_effects: true,
-        collapse_vars: true,
-    }
-    mangle = {}
-    input: {
-        for (let a = 9, i = 0; i < 20; i += a) {
-            let b = a++ + i;
-            console.log(a, b, i);
-            for (let k = b, m = b*b, i = 0; i < 10; i++) {
-                console.log(a, b, m, k, i);
-            }
-        }
-    }
-    expect: {
-        for (let o = 9, l = 0; l < 20; l += o) {
-            let e = o++ + l;
-            console.log(o, e, l);
-            for (let l = e, t = e * e, c = 0; c < 10; c++)
-                console.log(o, e, t, l, c);
-        }
-    }
-    expect_stdout: true
-}

test/compress/issue-1588.js

@@ -85,15 +85,3 @@ 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-1770.js

@@ -103,3 +103,137 @@ numeric_literal: {
         "8 7 8",
     ]
 }
+
+identifier: {
+    mangle_props = {}
+    input: {
+        var obj = {
+            abstract: 1,
+            boolean: 2,
+            byte: 3,
+            char: 4,
+            class: 5,
+            double: 6,
+            enum: 7,
+            export: 8,
+            extends: 9,
+            final: 10,
+            float: 11,
+            goto: 12,
+            implements: 13,
+            import: 14,
+            int: 15,
+            interface: 16,
+            let: 17,
+            long: 18,
+            native: 19,
+            package: 20,
+            private: 21,
+            protected: 22,
+            public: 23,
+            short: 24,
+            static: 25,
+            super: 26,
+            synchronized: 27,
+            this: 28,
+            throws: 29,
+            transient: 30,
+            volatile: 31,
+            yield: 32,
+            false: 33,
+            null: 34,
+            true: 35,
+            break: 36,
+            case: 37,
+            catch: 38,
+            const: 39,
+            continue: 40,
+            debugger: 41,
+            default: 42,
+            delete: 43,
+            do: 44,
+            else: 45,
+            finally: 46,
+            for: 47,
+            function: 48,
+            if: 49,
+            in: 50,
+            instanceof: 51,
+            new: 52,
+            return: 53,
+            switch: 54,
+            throw: 55,
+            try: 56,
+            typeof: 57,
+            var: 58,
+            void: 59,
+            while: 60,
+            with: 61,
+        };
+    }
+    expect: {
+        var obj = {
+            e: 1,
+            t: 2,
+            n: 3,
+            a: 4,
+            i: 5,
+            o: 6,
+            r: 7,
+            l: 8,
+            s: 9,
+            c: 10,
+            f: 11,
+            u: 12,
+            d: 13,
+            h: 14,
+            p: 15,
+            b: 16,
+            v: 17,
+            w: 18,
+            y: 19,
+            g: 20,
+            m: 21,
+            k: 22,
+            x: 23,
+            j: 24,
+            z: 25,
+            q: 26,
+            A: 27,
+            B: 28,
+            C: 29,
+            D: 30,
+            F: 31,
+            G: 32,
+            false: 33,
+            null: 34,
+            true: 35,
+            H: 36,
+            I: 37,
+            J: 38,
+            K: 39,
+            L: 40,
+            M: 41,
+            N: 42,
+            O: 43,
+            P: 44,
+            Q: 45,
+            R: 46,
+            S: 47,
+            T: 48,
+            U: 49,
+            V: 50,
+            W: 51,
+            X: 52,
+            Y: 53,
+            Z: 54,
+            $: 55,
+            _: 56,
+            ee: 57,
+            te: 58,
+            ne: 59,
+            ae: 60,
+            ie: 61,
+        };
+    }
+}

test/compress/issue-2001.js

@@ -1,281 +0,0 @@
-export_func_1: {
-    options = {
-        hoist_funs: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export function f(){};
-    }
-    expect_exact: "export function f(){};"
-}
-
-export_func_2: {
-    options = {
-        hoist_funs: true,
-        side_effects: false,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export function f(){}(1);
-    }
-    expect_exact: "export function f(){};1;"
-}
-
-export_func_3: {
-    options = {
-        hoist_funs: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export function f(){}(1);
-    }
-    expect_exact: "export function f(){};"
-}
-
-export_default_func_1: {
-    options = {
-        hoist_funs: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default function f(){};
-    }
-    expect_exact: "export default function f(){};"
-}
-
-export_default_func_2: {
-    options = {
-        hoist_funs: true,
-        side_effects: false,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default function f(){}(1);
-    }
-    expect_exact: "export default function f(){};1;"
-}
-
-export_default_func_3: {
-    options = {
-        hoist_funs: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default function f(){}(1);
-    }
-    expect_exact: "export default function f(){};"
-}
-
-export_class_1: {
-    options = {
-        hoist_funs: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export class C {};
-    }
-    expect_exact: "export class C{};"
-}
-
-export_class_2: {
-    options = {
-        hoist_funs: true,
-        side_effects: false,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export class C {}(1);
-    }
-    expect_exact: "export class C{};1;"
-}
-
-export_class_3: {
-    options = {
-        hoist_funs: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export class C {}(1);
-    }
-    expect_exact: "export class C{};"
-}
-
-export_default_class_1: {
-    options = {
-        hoist_funs: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default class C {};
-    }
-    expect_exact: "export default class C{};"
-}
-
-export_default_class_2: {
-    options = {
-        hoist_funs: true,
-        side_effects: false,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default class C {}(1);
-    }
-    expect_exact: "export default class C{};1;"
-}
-
-export_default_class_3: {
-    options = {
-        hoist_funs: true,
-        side_effects: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default class C {}(1);
-    }
-    expect_exact: "export default class C{};"
-}
-
-export_mangle_1: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export function foo(one, two) {
-            return one - two;
-        };
-    }
-    expect_exact: "export function foo(o,n){return o-n};"
-}
-
-export_mangle_2: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export default function foo(one, two) {
-            return one - two;
-        };
-    }
-    expect_exact: "export default function foo(o,t){return o-t};"
-}
-
-export_mangle_3: {
-    options = {
-        collapse_vars: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export class C {
-            go(one, two) {
-                var z = one;
-                return one - two + z;
-            }
-        };
-    }
-    expect_exact: "export class C{go(r,e){return r-e+r}};"
-}
-
-export_mangle_4: {
-    options = {
-        collapse_vars: true,
-    }
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export default class C {
-            go(one, two) {
-                var z = one;
-                return one - two + z;
-            }
-        };
-    }
-    expect_exact: "export default class C{go(e,r){return e-r+e}};"
-}
-
-export_mangle_5: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        export default {
-            prop: function(one, two) {
-                return one - two;
-            }
-        };
-    }
-    expect_exact: "export default{prop:function(r,t){return r-t}};"
-}
-
-export_mangle_6: {
-    mangle = {
-        toplevel: true,
-    }
-    input: {
-        var baz = 2;
-        export let foo = 1, bar = baz;
-    }
-    expect_exact: "var o=2;export let foo=1,bar=o;"
-}
-
-export_toplevel_1: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f(){}
-        export function g(){};
-        export default function h(){};
-    }
-    expect: {
-        export function g(){};
-        export default function h(){};
-    }
-}
-
-export_toplevel_2: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        class A {}
-        export class B {};
-        export default class C {};
-    }
-    expect: {
-        export class B {};
-        export default class C {};
-    }
-}
-
-export_default_func_ref: {
-    options = {
-        hoist_funs: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        export default function f(){};
-        f();
-    }
-    expect_exact: "export default function f(){};f();"
-}

test/compress/issue-203.js

@@ -1,56 +0,0 @@
-
-compress_new_function: {
-    options = {
-        unsafe: true,
-        unsafe_Func: true,
-    }
-    input: {
-        new Function("aa, bb", 'return aa;');
-    }
-    expect: {
-        Function("n,r", "return n");
-    }
-}
-
-compress_new_function_with_destruct: {
-    options = {
-        unsafe: true,
-        unsafe_Func: true,
-        ecma: 6
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        new Function("aa, [bb]", 'return aa;');
-        new Function("aa, {bb}", 'return aa;');
-        new Function("[[aa]], [{bb}]", 'return aa;');
-    }
-    expect: {
-        Function("n,[r]", "return n");
-        Function("n,{bb:b}", "return n");
-        Function("[[n]],[{bb:b}]", "return n");
-    }
-}
-
-compress_new_function_with_destruct_arrows: {
-    options = {
-        arrows: true,
-        unsafe: true,
-        unsafe_Func: true,
-        ecma: 6
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        new Function("aa, [bb]", 'return aa;');
-        new Function("aa, {bb}", 'return aa;');
-        new Function("[[aa]], [{bb}]", 'return aa;');
-    }
-    expect: {
-        Function("n,[a]", "return n");
-        Function("b,{bb:n}", "return b");
-        Function("[[b]],[{bb:n}]", "return b");
-    }
-}

test/compress/issue-208.js

@@ -38,7 +38,7 @@ mixed: {
         }
     }
     input: {
-        const ENV = 3;
+        var ENV = 3;
         var FOO = 4;
         f(ENV * 10);
         --FOO;
@@ -49,7 +49,7 @@ mixed: {
         x = DEBUG;
     }
     expect: {
-        const ENV = 3;
+        var 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:41,14]',
+        'WARN: global_defs ENV redefined [test/compress/issue-208.js:41,12]',
         'WARN: global_defs FOO redefined [test/compress/issue-208.js:42,12]',
         'WARN: global_defs FOO redefined [test/compress/issue-208.js:44,10]',
         'WARN: global_defs DEBUG redefined [test/compress/issue-208.js:45,8]',

test/compress/issue-281.js

@@ -419,7 +419,7 @@ wrap_iife_in_return_call: {
     expect_exact: '(void console.log("test"))();'
 }
 
-pure_annotation: {
+pure_annotation_1: {
     options = {
         inline: true,
         side_effects: true,
@@ -432,6 +432,20 @@ pure_annotation: {
     expect_exact: ""
 }
 
+pure_annotation_2: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        side_effects: true,
+    }
+    input: {
+        /*@__PURE__*/(function(n) {
+            console.log("hello", n);
+        }(42));
+    }
+    expect_exact: ""
+}
+
 drop_fargs: {
     options = {
         cascade: true,
@@ -449,9 +463,7 @@ drop_fargs: {
     }
     expect: {
         var a = 1;
-        !function() {
-            a++;
-        }(++a && a.var);
+        ++a && a.var, a++;
         console.log(a);
     }
     expect_stdout: "3"
@@ -474,9 +486,7 @@ keep_fargs: {
     }
     expect: {
         var a = 1;
-        !function(a_1) {
-            a++;
-        }(++a && a.var);
+        ++a && a.var, a++;
         console.log(a);
     }
     expect_stdout: "3"

test/compress/issue-926.js

@@ -1,9 +0,0 @@
-template_strings: {
-    input: {
-        foo(
-            `<span>${contents}</span>`,
-            `<a href="${url}">${text}</a>`
-        );
-    }
-    expect_exact: "foo(`<span>${contents}</span>`,`<a href=\"${url}\">${text}</a>`);"
-}

test/compress/join-vars.js

@@ -1,40 +0,0 @@
-only_vars: {
-    options = { join_vars: true };
-    input: {
-        let netmaskBinary = '';
-        for (let i = 0; i < netmaskBits; ++i) {
-            netmaskBinary += '1';
-        }
-    }
-    expect: {
-        let netmaskBinary = '';
-        for (let i = 0; i < netmaskBits; ++i) netmaskBinary += '1';
-    }
-}
-
-issue_1079_with_vars: {
-    options = { join_vars: true };
-    input: {
-        var netmaskBinary = '';
-        for (var i = 0; i < netmaskBits; ++i) {
-            netmaskBinary += '1';
-        }
-    }
-    expect: {
-        for (var netmaskBinary = '', i = 0; i < netmaskBits; ++i) netmaskBinary += '1';
-    }
-}
-
-issue_1079_with_mixed: {
-    options = { join_vars: true };
-    input: {
-        var netmaskBinary = '';
-        for (let i = 0; i < netmaskBits; ++i) {
-            netmaskBinary += '1';
-        }
-    }
-    expect: {
-        var netmaskBinary = ''
-        for (let i = 0; i < netmaskBits; ++i) netmaskBinary += '1';
-    }
-}

test/compress/loops.js

@@ -146,50 +146,6 @@ 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,

test/compress/new.js

@@ -82,19 +82,3 @@ new_with_unary_prefix: {
     }
     expect_exact: 'var bar=(+new Date).toString(32);';
 }
-
-new_with_assignement_expression: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a;
-        new x(a = 5 * 2, b = [1, 2, 3], c = {a: "a", b: "b", cd: "c" + "d"});
-        new y([a, b] = [3, 4]);
-    }
-    expect: {
-        var a;
-        new x(a = 10, b = [1, 2, 3], c = {a: "a", b: "b", cd: "cd"});
-        new y([a, b] = [3, 4]);
-    }
-}

test/compress/object.js

@@ -1,512 +0,0 @@
-getter_setter: {
-    input: {
-        var get = "bar";
-        var a = {
-            get,
-            set: "foo",
-            get bar() {
-                return this.get;
-            },
-            get 5() {
-                return "five";
-            },
-            get 0xf55() {
-                return "f five five";
-            },
-            get "five"() {
-                return 5;
-            },
-            set one(value) {
-                this._one = value;
-            },
-            set 9(value) {
-                this._nine = value;
-            },
-            set 0b1010(value) {
-                this._ten = value;
-            },
-            set "eleven"(value) {
-                this._eleven = value;
-            }
-        };
-        var b = {
-            get() { return "gift"; },
-            set: function(code) { return "Storing code " + code; }
-        };
-        var c = {
-            ["get"]: "foo",
-            ["set"]: "bar"
-        };
-        var d = {
-            get: "foo",
-            set: "bar"
-        };
-    }
-    expect: {
-        var get = "bar";
-        var a = {
-            get,
-            set: "foo",
-            get bar() {
-                return this.get;
-            },
-            get 5() {
-                return "five";
-            },
-            get 0xf55() {
-                return "f five five";
-            },
-            get "five"() {
-                return 5;
-            },
-            set one(value) {
-                this._one = value;
-            },
-            set 9(value) {
-                this._nine = value;
-            },
-            set 0b1010(value) {
-                this._ten = value;
-            },
-            set "eleven"(value) {
-                this._eleven = value;
-            }
-        };
-        var b = {
-            get() { return "gift"; },
-            set: function(code) { return "Storing code " + code; }
-        };
-        var c = {
-            ["get"]: "foo",
-            ["set"]: "bar"
-        };
-        var d = {
-            get: "foo",
-            set: "bar"
-        };
-    }
-}
-
-getter_setter_mangler: {
-    mangle = {}
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function f(get,set) {
-            return {
-                get,
-                set,
-                get g(){},
-                set s(n){},
-                c,
-                a:1,
-                m(){}
-            };
-        }
-    }
-    expect_exact: "function f(t,e){return{get:t,set:e,get g(){},set s(t){},c,a:1,m(){}}}"
-}
-
-use_shorthand_opportunity: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        var foo = 123;
-        var obj = {foo: foo};
-    }
-    expect_exact: "var foo=123;var obj={foo};"
-}
-
-computed_property_names: {
-    input: {
-        obj({ ["x" + "x"]: 6 });
-    }
-    expect_exact: 'obj({["x"+"x"]:6});'
-}
-
-computed_property_names_evaluated_1: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        obj({
-            [1 + 1]: 2,
-            ["x" + "x"]: 6
-        });
-    }
-    expect_exact: 'obj({[2]:2,["xx"]:6});'
-}
-
-computed_property_names_evaluated_2: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = something();
-
-        var obj = {
-            [foo]() {
-                return "blah";
-            }
-        }
-    }
-    expect_exact: 'var foo=something();var obj={[foo](){return"blah"}};'
-}
-
-shorthand_properties: {
-    mangle = true;
-    input: {
-        (function() {
-            var prop = 1;
-            const value = {prop};
-            return value;
-        })();
-    }
-    expect: {
-        (function() {
-            var n = 1;
-            const r = {prop:n};
-            return r;
-        })();
-    }
-}
-
-concise_methods: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        x = {
-            foo(a, b) {
-                return x;
-            }
-        }
-        y = {
-            foo([{a}]) {
-                return a;
-            },
-            bar(){}
-        }
-    }
-    expect_exact: "x={foo(a,b){return x}};y={foo([{a}]){return a},bar(){}};"
-}
-
-concise_methods_with_computed_property: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = {
-            [Symbol.iterator]() {
-                return { /* stuff */ }
-            },
-            [1 + 2]() {
-                return 3;
-            },
-            ["1" + "4"]() {
-                return 14;
-            }
-        }
-    }
-    expect: {
-        var foo = {
-            [Symbol.iterator]() {
-                return { /* stuff */ }
-            },
-            [3]() {
-                return 3;
-            },
-            ["14"]() {
-                return 14;
-            }
-        }
-    }
-}
-
-concise_methods_with_computed_property2: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = {
-            [[1]](){
-                return "success";
-            }
-        };
-        doSomething(foo[[1]]());
-    }
-    expect_exact: 'var foo={[[1]](){return"success"}};doSomething(foo[[1]]());'
-}
-
-concise_methods_with_various_property_names: {
-    input: {
-        var get = "bar";
-        var a = {
-            bar() {
-                return this.get;
-            },
-            5() {
-                return "five";
-            },
-            0xf55() {
-                return "f five five";
-            },
-            "five"() {
-                return 5;
-            },
-            0b1010(value) {
-                this._ten = value;
-            }
-        };
-    }
-    expect: {
-        var get = "bar";
-        var a = {
-            bar() {
-                return this.get;
-            },
-            5() {
-                return "five";
-            },
-            0xf55() {
-                return "f five five";
-            },
-            "five"() {
-                return 5;
-            },
-            0b1010(value) {
-                this._ten = value;
-            }
-        };
-    }
-}
-
-concise_methods_and_mangle_props: {
-    mangle_props = {
-        regex: /_/
-    };
-    input: {
-        function x() {
-            obj = {
-                _foo() { return 1; }
-            }
-        }
-    }
-    expect: {
-        function x() {
-            obj = {
-                o() { return 1; }
-            }
-        }
-    }
-}
-
-concise_generators: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        x = {
-            *foo(a, b) {
-                return x;
-            }
-        }
-        y = {
-            *foo([{a}]) {
-                yield a;
-            },
-            bar(){}
-        }
-    }
-    expect_exact: "x={*foo(a,b){return x}};y={*foo([{a}]){yield a},bar(){}};"
-}
-
-concise_methods_and_keyword_names: {
-    input: {
-        x = {
-            catch() {},
-            throw() {}
-        }
-    }
-    expect: {
-        x={catch(){},throw(){}};
-    }
-}
-
-getter_setter_with_computed_value: {
-    input: {
-        class C {
-            get ['a']() {
-                return 'A';
-            }
-            set ['a'](value) {
-                do_something(a);
-            }
-        }
-        var x = {
-            get [a.b]() {
-                return 42;
-            }
-        };
-        class MyArray extends Array {
-            get [Symbol.species]() {
-                return Array;
-            }
-        }
-    }
-    expect_exact: 'class C{get["a"](){return"A"}set["a"](value){do_something(a)}}var x={get[a.b](){return 42}};class MyArray extends Array{get[Symbol.species](){return Array}}'
-}
-
-property_with_operator_value: {
-    input: {
-        var foo = {
-            "*": 1,
-            get "*"() {
-                return 2;
-            },
-            *"*"() {
-                return 3;
-            },
-            "%": 1,
-            get "%"() {
-                return 2;
-            },
-            *"%"() {
-                return 3;
-            }
-        }
-        class bar {
-            get "*"() {
-                return 1
-            }
-            *"*"() {
-                return 2;
-            }
-            get "%"() {
-                return 1
-            }
-            *"%"() {
-                return 2;
-            }
-        }
-    }
-    expect_exact: 'var foo={"*":1,get"*"(){return 2},*"*"(){return 3},"%":1,get"%"(){return 2},*"%"(){return 3}};class bar{get"*"(){return 1}*"*"(){return 2}get"%"(){return 1}*"%"(){return 2}}'
-}
-
-property_with_unprintable: {
-    input: {
-        var foo = {
-            "\x00\x01": "foo",
-            get "\x00\x01"() {
-                return "bar";
-            },
-            set "\x00\x01"(foo) {
-                save(foo);
-            },
-            *"\x00\x01"() {
-                return "foobar";
-            }
-        }
-        class bar {
-            get "\x00\x01"() {
-                return "bar"
-            }
-            set "\x00\x01"(foo) {
-                save(foo);
-            }
-            *"\x00\x01"() {
-                return "foobar";
-            }
-        }
-    }
-    expect_exact: 'var foo={"\\0\x01":"foo",get"\\0\x01"(){return"bar"},set"\\0\x01"(foo){save(foo)},*"\\0\x01"(){return"foobar"}};class bar{get"\\0\x01"(){return"bar"}set"\\0\x01"(foo){save(foo)}*"\\0\x01"(){return"foobar"}}'
-}
-
-property_with_unprintable_ascii_only: {
-    beautify = {
-        ascii_only: true,
-    }
-    input: {
-        var foo = {
-            "\x00\x01": "foo",
-            get "\x00\x01"() {
-                return "bar";
-            },
-            set "\x00\x01"(foo) {
-                save(foo);
-            },
-            *"\x00\x01"() {
-                return "foobar";
-            }
-        }
-        class bar {
-            get "\x00\x01"() {
-                return "bar"
-            }
-            set "\x00\x01"(foo) {
-                save(foo);
-            }
-            *"\x00\x01"() {
-                return "foobar";
-            }
-        }
-    }
-    expect_exact: 'var foo={"\\0\\x01":"foo",get"\\0\\x01"(){return"bar"},set"\\0\\x01"(foo){save(foo)},*"\\0\\x01"(){return"foobar"}};class bar{get"\\0\\x01"(){return"bar"}set"\\0\\x01"(foo){save(foo)}*"\\0\\x01"(){return"foobar"}}'
-}
-
-property_with_unprintable_ascii_only_static: {
-    beautify = {
-        ascii_only: true
-    }
-    input: {
-        class foo {
-            static get "\x02\x03"() {
-                return "bar";
-            }
-            static set "\x04\x05"(foo) {
-                save(foo);
-            }
-        }
-    }
-    expect_exact: 'class foo{static get"\\x02\\x03"(){return"bar"}static set"\\x04\\x05"(foo){save(foo)}}'
-}
-
-methods_and_getters_with_keep_quoted_props_enabled: {
-    beautify = {
-        quote_style: 3,
-        keep_quoted_props: true,
-    }
-    input: {
-        var obj = {
-            a() {},
-            "b"() {},
-            get c() { return "c"},
-            get "d"() { return "d"},
-            set e(a) { doSomething(a); },
-            set f(a) { doSomething(b); }
-        }
-    }
-    expect_exact: 'var obj={a(){},"b"(){},get c(){return"c"},get"d"(){return"d"},set e(a){doSomething(a)},set f(a){doSomething(b)}};'
-}
-
-allow_assignments_to_property_values: {
-    input: {
-        var foo = {123: foo = 123} = {foo: "456"};
-    }
-    expect: {
-        var foo = {123: foo = 123} = {foo: "456"};
-    }
-}
-
-variable_as_computed_property: {
-    input: {
-        function getLine(header) {
-            return {
-                [header]: {}
-            };
-        }
-    }
-    expect_exact: "function getLine(header){return{[header]:{}}}"
-}

test/compress/parameters.js

@@ -1,186 +0,0 @@
-arrow_functions: {
-    options = {
-        arrows: true,
-    }
-    input: {
-        (a) => b;  // 1 args
-        (a, b) => c;  // n args
-        () => b;  // 0 args
-        (a) => (b) => c;  // func returns func returns func
-        (a) => ((b) => c);  // So these parens are dropped
-        () => (b,c) => d;  // func returns func returns func
-        a=>{return b;}
-        a => 'lel';  // Dropping the parens
-    }
-    expect_exact: "a=>b;(a,b)=>c;()=>b;a=>b=>c;a=>b=>c;()=>(b,c)=>d;a=>b;a=>\"lel\";"
-}
-
-arrow_return: {
-    options = {
-        arrows: true,
-    }
-    input: {
-        () => {};
-        () => { return; };
-        a => { return 1; }
-        a => { return -b }
-        a => { return b; var b; }
-        (x, y) => { return x - y; }
-    }
-    expect_exact: "()=>{};()=>{};a=>1;a=>-b;a=>{return b;var b};(x,y)=>x-y;"
-}
-
-regression_arrow_functions_and_hoist: {
-    options = {
-        hoist_vars: true,
-        hoist_funs: true
-    }
-    input: {
-        (a) => b;
-    }
-    expect_exact: "a=>b;"
-}
-
-regression_assign_arrow_functions: {
-    input: {
-        oninstall = e => false;
-        oninstall = () => false;
-    }
-    expect: {
-        oninstall=e=>false;
-        oninstall=()=>false;
-    }
-}
-
-destructuring_arguments_1: {
-    input: {
-        (function ( a ) { });
-        (function ( [ a ] ) { });
-        (function ( [ a, b ] ) { });
-        (function ( [ [ a ] ] ) { });
-        (function ( [ [ a, b ] ] ) { });
-        (function ( [ a, [ b ] ] ) { });
-        (function ( [ [ b ], a ] ) { });
-
-        (function ( { a } ) { });
-        (function ( { a, b } ) { });
-
-        (function ( [ { a } ] ) { });
-        (function ( [ { a, b } ] ) { });
-        (function ( [ a, { b } ] ) { });
-        (function ( [ { b }, a ] ) { });
-
-        ( [ a ] ) => { };
-        ( [ a, b ] ) => { };
-
-        ( { a } ) => { };
-        ( { a, b, c, d, e } ) => { };
-
-        ( [ a ] ) => b;
-        ( [ a, b ] ) => c;
-
-        ( { a } ) => b;
-        ( { a, b } ) => c;
-    }
-    expect: {
-        (function(a){});
-        (function([a]){});
-        (function([a,b]){});
-        (function([[a]]){});
-        (function([[a,b]]){});
-        (function([a,[b]]){});
-        (function([[b],a]){});
-
-        (function({a}){});
-        (function({a,b}){});
-
-        (function([{a}]){});
-        (function([{a,b}]){});
-        (function([a,{b}]){});
-        (function([{b},a]){});
-
-        ([a])=>{};
-        ([a,b])=>{};
-
-        ({a})=>{};
-        ({a,b,c,d,e})=>{};
-
-        ([a])=>b;
-        ([a,b])=>c;
-
-        ({a})=>b;
-        ({a,b})=>c;
-    }
-}
-
-destructuring_arguments_2: {
-    input: {
-        (function([]) {});
-        (function({}) {});
-        (function([,,,,,]) {});
-        (function ([a, {b: c}]) {});
-        (function ([...args]) {});
-        (function ({x,}) {});
-        class a { *method({ [thrower()]: x } = {}) {}};
-        (function(a, b, c, d, [{e: [...f]}]){})(1, 2, 3, 4, [{e: [1, 2, 3]}]);
-    }
-    expect: {
-        (function([]) {});
-        (function({}) {});
-        (function([,,,,,]) {});
-        (function ([a, {b: c}]) {});
-        (function ([...args]) {});
-        (function ({x,}) {});
-        class a { *method({ [thrower()]: x } = {}) {}};
-        (function(a, b, c, d, [{e: [...f]}]){})(1, 2, 3, 4, [{e: [1, 2, 3]}]);
-    }
-}
-
-destructuring_arguments_3: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function fn3({x: {y: {z: {} = 42}}}) {}
-        const { cover = (function () {}), xCover = (0, function() {})  } = {};
-        let { cover = (function () {}), xCover = (0, function() {})  } = {};
-        var { cover = (function () {}), xCover = (0, function() {})  } = {};
-    }
-    expect_exact: "function fn3({x:{y:{z:{}=42}}}){}const{cover=function(){},xCover=(0,function(){})}={};let{cover=function(){},xCover=(0,function(){})}={};var{cover=function(){},xCover=(0,function(){})}={};"
-}
-
-default_arguments: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function x(a = 6) { }
-        function x(a = (6 + 5)) { }
-        function x({ foo } = {}, [ bar ] = [ 1 ]) { }
-    }
-    expect_exact: "function x(a=6){}function x(a=6+5){}function x({foo}={},[bar]=[1]){}"
-}
-
-default_values_in_destructurings: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function x({a=(4), b}) {}
-        function x([b, c=(12)]) {}
-        var { x = (6), y } = x;
-        var [ x, y = (6) ] = x;
-    }
-    expect_exact: "function x({a=4,b}){}function x([b,c=12]){}var{x=6,y}=x;var[x,y=6]=x;"
-}
-
-accept_duplicated_parameters_in_non_strict_without_spread_or_default_assignment: {
-    input: {
-        function a(b, b){}
-        function b({c: test, c: test}){}
-    }
-    expect: {
-        function a(b, b){}
-        function b({c: test, c: test}){}
-    }
-}

test/compress/properties.js

@@ -148,7 +148,6 @@ mangle_unquoted_properties: {
         properties: false
     }
     mangle_props = {
-        builtins: true,
         keep_quoted: true
     }
     beautify = {
@@ -239,7 +238,6 @@ mangle_debug_suffix_keep_quoted: {
         properties: false
     }
     mangle_props = {
-        builtins: true,
         keep_quoted: true,
         debug: "XYZ",
         reserved: []

test/compress/reduce_vars.js

@@ -2228,10 +2228,11 @@ issue_1814_1: {
     options = {
         evaluate: true,
         reduce_vars: true,
+        toplevel: true,
         unused: true,
     }
     input: {
-        const a = 42;
+        var a = 42;
         !function() {
             var b = a;
             !function(a) {
@@ -2240,7 +2241,6 @@ issue_1814_1: {
         }();
     }
     expect: {
-        const a = 42;
         !function() {
             !function(a) {
                 console.log(a++, 42);
@@ -2254,10 +2254,11 @@ issue_1814_2: {
     options = {
         evaluate: true,
         reduce_vars: true,
+        toplevel: true,
         unused: true,
     }
     input: {
-        const a = "32";
+        var a = "32";
         !function() {
             var b = a + 1;
             !function(a) {
@@ -2266,7 +2267,6 @@ issue_1814_2: {
         }();
     }
     expect: {
-        const a = "32";
         !function() {
             !function(a) {
                 console.log(a++, "321");
@@ -2576,56 +2576,6 @@ accessor: {
     expect_stdout: "1 1"
 }
 
-issue_2090_1: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var x = 1;
-            [].forEach(() => x = 2);
-            return x;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var x = 1;
-            [].forEach(() => x = 2);
-            return x;
-        }());
-    }
-    expect_stdout: "1"
-    node_version: ">=4"
-}
-
-issue_2090_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-    }
-    input: {
-        console.log(function() {
-            var x = 1;
-            [].forEach(() => {
-                x = 2;
-            });
-            return x;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var x = 1;
-            [].forEach(() => {
-                x = 2;
-            });
-            return x;
-        }());
-    }
-    expect_stdout: "1"
-    node_version: ">=4"
-}
-
 for_in_prop: {
     options = {
         reduce_vars: true,

test/compress/sequences.js

@@ -711,30 +711,6 @@ issue_27: {
     }
 }
 
-reassign_const: {
-    options = {
-        cascade: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function f() {
-            const a = 1;
-            a++;
-            return a;
-        }
-        console.log(f());
-    }
-    expect: {
-        function f() {
-            const a = 1;
-            return a++, a;
-        }
-        console.log(f());
-    }
-    expect_stdout: true
-}
-
 issue_2062: {
     options = {
         booleans: true,

test/compress/super.js

@@ -1,9 +0,0 @@
-
-super_can_be_parsed: {
-    input: {
-        super(1,2);
-        super.meth();
-    }
-    expect_exact: "super(1,2);super.meth();"
-}
-

test/compress/template-string.js

@@ -1,402 +0,0 @@
-template_strings: {
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        ``;
-        `xx\`x`;
-        `${ foo + 2 }`;
-        ` foo ${ bar + `baz ${ qux }` }`;
-    }
-    expect_exact: "``;`xx\\`x`;`${foo+2}`;` foo ${bar+`baz ${qux}`}`;";
-}
-
-template_string_prefixes: {
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        String.raw`foo`;
-        foo `bar`;
-    }
-    expect_exact: "String.raw`foo`;foo`bar`;";
-}
-
-template_strings_ascii_only: {
-    beautify = {
-        ascii_only: true,
-        quote_style: 3
-    }
-    input: {
-        var foo = `foo
-        bar
-        ↂωↂ`;
-        var bar = `\``;
-    }
-    expect_exact: "var foo=`foo\\n        bar\\n        \\u2182\\u03c9\\u2182`;var bar=`\\``;"
-}
-
-template_strings_without_ascii_only: {
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        var foo = `foo
-        bar
-        ↂωↂ`
-    }
-    expect_exact: "var foo=`foo\\n        bar\\n        ↂωↂ`;"
-}
-
-template_string_with_constant_expression: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        var foo = `${4 + 4} equals 4 + 4`;
-    }
-    expect: {
-        var foo = `8 equals 4 + 4`;
-    }
-}
-
-template_string_with_predefined_constants: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        var foo = `This is ${undefined}`;
-        var bar = `This is ${NaN}`;
-        var baz = `This is ${null}`;
-        var foofoo = `This is ${Infinity}`;
-        var foobar = "This is ${1/0}";
-        var foobaz = 'This is ${1/0}';
-        var barfoo = "This is ${NaN}";
-        var bazfoo = "This is ${null}";
-        var bazbaz = `This is ${1/0}`;
-        var barbar = `This is ${0/0}`;
-        var barbar = "This is ${0/0}";
-        var barber = 'This is ${0/0}';
-
-        var a = `${4**11}`; // 8 in template vs 7 chars - 4194304
-        var b = `${4**12}`; // 8 in template vs 8 chars - 16777216
-        var c = `${4**14}`; // 8 in template vs 9 chars - 268435456
-    }
-    expect: {
-        var foo = `This is undefined`;
-        var bar = `This is NaN`;
-        var baz = `This is null`;
-        var foofoo = `This is ${1/0}`;
-        var foobar = "This is ${1/0}";
-        var foobaz = 'This is ${1/0}';
-        var barfoo = "This is ${NaN}";
-        var bazfoo = "This is ${null}";
-        var bazbaz = `This is ${1/0}`;
-        var barbar = `This is NaN`;
-        var barbar = "This is ${0/0}";
-        var barber = 'This is ${0/0}';
-
-        var a = `4194304`;
-        var b = `16777216`; // Potential for further concatentation
-        var c = `${4**14}`; // Not worth converting
-    }
-}
-
-template_string_evaluate_with_many_segments: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        var foo = `Hello ${guest()}, welcome to ${location()}${"."}`;
-        var bar = `${1}${2}${3}${4}${5}${6}${7}${8}${9}${0}`;
-        var baz = `${foobar()}${foobar()}${foobar()}${foobar()}`;
-        var buzz = `${1}${foobar()}${2}${foobar()}${3}${foobar()}`;
-    }
-    expect: {
-        var foo = `Hello ${guest()}, welcome to ${location()}.`;
-        var bar = `1234567890`;
-        var baz = `${foobar()}${foobar()}${foobar()}${foobar()}`;
-        var buzz = `1${foobar()}2${foobar()}3${foobar()}`;
-    }
-}
-
-template_string_with_many_segments: {
-    beautify = {
-        quote_style: 3
-    }
-    input: {
-        var foo = `Hello ${guest()}, welcome to ${location()}${"."}`;
-        var bar = `${1}${2}${3}${4}${5}${6}${7}${8}${9}${0}`;
-        var baz = `${foobar()}${foobar()}${foobar()}${foobar()}`;
-        var buzz = `${1}${foobar()}${2}${foobar()}${3}${foobar()}`;
-    }
-    expect: {
-        var foo = `Hello ${guest()}, welcome to ${location()}${"."}`;
-        var bar = `${1}${2}${3}${4}${5}${6}${7}${8}${9}${0}`;
-        var baz = `${foobar()}${foobar()}${foobar()}${foobar()}`;
-        var buzz = `${1}${foobar()}${2}${foobar()}${3}${foobar()}`;
-    }
-}
-
-template_string_to_normal_string: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 0
-    }
-    input: {
-        var foo = `This is ${undefined}`;
-        var bar = "Decimals " + `${1}${2}${3}${4}${5}${6}${7}${8}${9}${0}`;
-    }
-    expect: {
-        var foo = `This is undefined`;
-        var bar = "Decimals 1234567890";
-    }
-}
-
-template_concattenating_string: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 3 // Yes, keep quotes
-    }
-    input: {
-        var foo = "Have a nice " + `day. ${`day. ` + `day.`}`;
-        var bar = "Have a nice " + `${day()}`;
-    }
-    expect: {
-        var foo = "Have a nice day. day. day.";
-        var bar = "Have a nice " + `${day()}`;
-    }
-}
-
-evaluate_nested_templates: {
-    options = {
-        evaluate: true
-    }
-    beautify = {
-        quote_style: 0
-    }
-    input: {
-        var baz = `${`${`${`foo`}`}`}`;
-    }
-    expect: {
-        var baz = `foo`;
-    }
-}
-
-enforce_double_quotes: {
-    beautify = {
-        quote_style: 1
-    }
-    input: {
-        var foo = `Hello world`;
-        var bar = `Hello ${'world'}`;
-        var baz = `Hello ${world()}`;
-    }
-    expect: {
-        var foo = `Hello world`;
-        var bar = `Hello ${"world"}`;
-        var baz = `Hello ${world()}`;
-    }
-}
-
-enforce_single_quotes: {
-    beautify = {
-        quote_style: 2
-    }
-    input: {
-        var foo = `Hello world`;
-        var bar = `Hello ${"world"}`;
-        var baz = `Hello ${world()}`;
-    }
-    expect: {
-        var foo = `Hello world`;
-        var bar = `Hello ${'world'}`;
-        var baz = `Hello ${world()}`;
-    }
-}
-
-enforce_double_quotes_and_evaluate: {
-    beautify = {
-        quote_style: 1
-    }
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = `Hello world`;
-        var bar = `Hello ${'world'}`;
-        var baz = `Hello ${world()}`;
-    }
-    expect: {
-        var foo = `Hello world`;
-        var bar = `Hello world`;
-        var baz = `Hello ${world()}`;
-    }
-}
-
-enforce_single_quotes_and_evaluate: {
-    beautify = {
-        quote_style: 2
-    }
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = `Hello world`;
-        var bar = `Hello ${"world"}`;
-        var baz = `Hello ${world()}`;
-    }
-    expect: {
-        var foo = `Hello world`;
-        var bar = `Hello world`;
-        var baz = `Hello ${world()}`;
-    }
-}
-
-respect_inline_script: {
-    beautify = {
-        inline_script: true,
-        quote_style: 3
-    }
-    input: {
-        var foo = `</script>${content}`;
-        var bar = `<!--`;
-        var baz = `-->`;
-    }
-    expect_exact: "var foo=`<\\/script>${content}`;var bar=`\\x3c!--`;var baz=`--\\x3e`;";
-}
-
-do_not_optimize_tagged_template_1: {
-    beautify = {
-        quote_style: 0
-    }
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = tag`Shall not be optimized. ${"But " + "this " + "is " + "fine."}`;
-        var bar = tag`Don't even mind changing my quotes!`;
-    }
-    expect_exact:
-        'var foo=tag`Shall not be optimized. ${"But this is fine."}`;var bar=tag`Don\'t even mind changing my quotes!`;';
-}
-
-do_not_optimize_tagged_template_2: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = tag`test` + " something out";
-    }
-    expect_exact: 'var foo=tag`test`+" something out";';
-}
-
-keep_raw_content_in_tagged_template: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = tag`\u0020\u{20}\u{00020}\x20\40\040 `;
-    }
-    expect_exact: "var foo=tag`\\u0020\\u{20}\\u{00020}\\x20\\40\\040 `;";
-}
-
-allow_chained_templates: {
-    input: {
-        var foo = tag`a``b``c``d`;
-    }
-    expect: {
-        var foo = tag`a``b``c``d`;
-    }
-}
-
-check_escaped_chars: {
-    input: {
-        var foo = `\u0020\u{20}\u{00020}\x20\40\040 `;
-    }
-    expect_exact: "var foo=`       `;";
-}
-
-escape_dollar_curly: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        console.log(`\$\{ beep \}`)
-        console.log(`${1-0}\${2-0}$\{3-0}${4-0}`)
-        console.log(`$${""}{not an expression}`)
-    }
-    expect_exact: "console.log(`\\${ beep }`);console.log(`1\\${2-0}\\${3-0}4`);console.log(`\\${not an expression}`);"
-}
-
-template_starting_with_newline: {
-    options = {
-        dead_code: true
-    }
-    input: {
-        function foo(e) {
-            return `
-this is a template string!`;
-        };
-    }
-    expect_exact: "function foo(e){return`\\nthis is a template string!`}"
-}
-
-template_with_newline: {
-    options = {
-        dead_code: true
-    }
-    input: {
-        function foo(e) {
-            return `yep,
-this is a template string!`;
-        };
-    }
-    expect_exact: "function foo(e){return`yep,\\nthis is a template string!`}"
-}
-
-template_ending_with_newline: {
-    options = {
-        dead_code: true
-    }
-    input: {
-        function foo(e) {
-            return `this is a template string!
-`;
-        };
-    }
-    expect_exact: "function foo(e){return`this is a template string!\\n`}"
-}
-
-issue_1856: {
-    beautify = {
-        ascii_only: false,
-    }
-    input: {
-        console.log(`\\n\\r\\u2028\\u2029\n\r\u2028\u2029`);
-    }
-    expect_exact: "console.log(`\\\\n\\\\r\\\\u2028\\\\u2029\\n\\r\\u2028\\u2029`);"
-}
-
-issue_1856_ascii_only: {
-    beautify = {
-        ascii_only: true,
-    }
-    input: {
-        console.log(`\\n\\r\\u2028\\u2029\n\r\u2028\u2029`);
-    }
-    expect_exact: "console.log(`\\\\n\\\\r\\\\u2028\\\\u2029\\n\\r\\u2028\\u2029`);"
-}

test/compress/try-catch.js

@@ -1,12 +0,0 @@
-catch_destructuring_with_sequence: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        try {
-            throw {};
-        } catch ({xCover = (0, function() {})} ) {
-        }
-    }
-    expect_exact: "try{throw{}}catch({xCover=(0,function(){})}){}"
-}

test/compress/unicode.js

@@ -15,106 +15,3 @@ unicode_parse_variables: {
         var l০ = 3;
     }
 }
-
-unicode_escaped_identifier: {
-    beautify = {ecma: 6}
-    input: {
-        var \u{61} = "foo";
-        var \u{10000} = "bar";
-    }
-    expect_exact: 'var a="foo";var \u{10000}="bar";';
-}
-
-unicode_identifier_ascii_only: {
-    beautify = {ascii_only: true, ecma: 6}
-    input: {
-        var \u{0061} = "hi";
-        var bar = "h\u{0065}llo";
-        var \u{10000} = "testing \u{101111}";
-    }
-    expect_exact: 'var a="hi";var bar="hello";var \\u{10000}="testing \\u{101111}";'
-}
-
-unicode_string_literals: {
-    beautify = {ascii_only: true, ecma: 6}
-    input: {
-        var a = "6 length unicode character: \u{101111}";
-    }
-    expect_exact: 'var a="6 length unicode character: \\u{101111}";'
-}
-
-// Don't escape identifiers below es6 (or in this case double escaped in expect_exact)
-unicode_output_es5_surrogates: {
-    beautify = {ascii_only: true, ecma: 5}
-    input: {
-        var \u{10000} = "6 length unicode character: \u{10FFFF}";
-    }
-    expect_exact: 'var \u{10000}="6 length unicode character: \\udbff\\udfff";'
-}
-
-check_escape_style: {
-    beautify = {ascii_only: true, ecma: 6}
-    input: {
-        var a = "\x01";
-        var \ua0081 = "\x10"; // \u0081 only in ID_Continue
-        var \u0100 = "\u0100";
-        var \u1000 = "\u1000";
-        var \u{10000} = "\u{10000}";
-        var \u{2f800} = "\u{100000}";
-    }
-    expect_exact: 'var a="\\x01";var \\ua0081="\\x10";var \\u0100="\\u0100";var \\u1000="\\u1000";var \\u{10000}="\\u{10000}";var \\u{2f800}="\\u{100000}";'
-}
-
-// Don't escape identifiers below es6, no escaped identifiers support and no \u{} syntax
-check_escape_style_es5: {
-    beautify = {ascii_only: true, ecma: 5}
-    input: {
-        var a = "\x01";
-        var \ua0081 = "\x10"; // \u0081 only in ID_Continue
-        var \u0100 = "\u0100";
-        var \u1000 = "\u1000";
-        var \u{10000} = "\u{10000}"; // Identifier won't be escaped in es 5.1
-        var \u{2f800} = "\u{100000}"; // Same
-    }
-    expect_exact: 'var a="\\x01";var \\ua0081="\\x10";var \\u0100="\\u0100";var \\u1000="\\u1000";var \ud800\udc00="\\ud800\\udc00";var \ud87e\udc00="\\udbc0\\udc00";'
-}
-
-ID_continue_with_surrogate_pair: {
-    beautify = {ascii_only: true, ecma: 6}
-    input: {
-        var \u{2f800}\u{2f800}\u{2f800}\u{2f800} = "\u{100000}\u{100000}\u{100000}\u{100000}\u{100000}";
-    }
-    expect_exact: 'var \\u{2f800}\\u{2f800}\\u{2f800}\\u{2f800}="\\u{100000}\\u{100000}\\u{100000}\\u{100000}\\u{100000}";'
-}
-
-escape_non_escaped_identifier: {
-    beautify = {ascii_only: true, ecma: 6}
-    input: {
-        var µþ = "µþ";
-    }
-    expect_exact: 'var \\u00b5\\u00fe="\\xb5\\xfe";'
-}
-
-non_escape_2_non_escape: {
-    beautify = {ascii_only: false, ecma: 6}
-    input: {
-        var µþ = "µþ";
-    }
-    expect_exact: 'var µþ="µþ";'
-}
-
-non_escape_2_half_escape1: {
-    beautify = {ascii_only: false, ascii_identifiers: true, ecma: 6}
-    input: {
-        var µþ = "µþ";
-    }
-    expect_exact: 'var \\u00b5\\u00fe="µþ";'
-}
-
-non_escape_2_half_escape2: {
-    beautify = {ascii_only: true, ascii_identifiers: false, ecma: 6}
-    input: {
-        var µþ = "µþ";
-    }
-    expect_exact: 'var µþ="\\xb5\\xfe";'
-}

test/compress/yield.js

@@ -1,201 +0,0 @@
-generators: {
-    input: {
-        function* fn() {};
-    }
-    expect_exact: "function*fn(){}"
-}
-
-generators_yield: {
-    input: {
-      function* fn() {
-        yield remote();
-      }
-    }
-    expect_exact: "function*fn(){yield remote()}"
-}
-
-generators_yield_assign: {
-    input: {
-      function* fn() {
-          var x = {};
-          x.prop = yield 5;
-      }
-    }
-    expect_exact: "function*fn(){var x={};x.prop=yield 5}"
-}
-
-generator_yield_undefined: {
-    input: {
-        function* fn() {
-            yield;
-        }
-    }
-    expect_exact: "function*fn(){yield}"
-}
-
-yield_optimize_expression: {
-    options = {
-    }
-    input: {
-        function* f1() { yield; }
-        function* f2() { yield undefined; }
-        function* f3() { yield null; }
-        function* f4() { yield* undefined; }
-    }
-    expect: {
-        function* f1() { yield }
-        function* f2() { yield; }
-        function* f3() { yield null; }
-        function* f4() { yield* void 0; }
-    }
-}
-
-yield_statements: {
-    input: {
-        function* fn() {
-            var a = (yield 1) + (yield 2);
-            var b = (yield 3) === (yield 4);
-            var c = (yield 5) << (yield 6);
-            var d = yield 7;
-            var e = (yield 8) ? yield 9 : yield 10;
-            var f = -(yield 11);
-        }
-    }
-    expect_exact: "function*fn(){var a=(yield 1)+(yield 2);var b=(yield 3)===(yield 4);var c=(yield 5)<<(yield 6);var d=yield 7;var e=(yield 8)?yield 9:yield 10;var f=-(yield 11)}"
-}
-
-yield_as_identifier_in_function_in_generator: {
-    input: {
-        var g = function*() {
-            function h() {
-                yield = 1;
-            }
-        };
-    }
-    expect: {
-        var g = function*() {
-            function h() {
-                yield = 1;
-            }
-        };
-    }
-}
-
-yield_before_punctuators: {
-    input: {
-        iter = (function*() {
-            assignmentResult = [ x = yield ] = value;
-        })();
-        function* g1() { (yield) }
-        function* g2() { [yield] }
-        function* g3() { return {yield} } // Added return to avoid {} drop
-        function* g4() { yield, yield; }
-        function* g5() { (yield) ? yield : yield; }
-    }
-    expect: {
-        iter = (function*() {
-            assignmentResult = [ x = yield ] = value;
-        })();
-        function* g1() { (yield) }
-        function* g2() { [yield] }
-        function* g3() { return {yield} }
-        function* g4() { yield, yield; }
-        function* g5() { (yield) ? yield : yield; }
-    }
-}
-
-yield_as_identifier_outside_strict_mode: {
-    input: {
-        import yield from "bar";
-        yield = 123;
-        while (true) {
-            yield:
-            for(;;) break yield;
-
-            foo();
-        }
-        while (true)
-            yield: for(;;) continue yield;
-        function yield(){}
-        function foo(...yield){}
-        try { new Error("") } catch (yield) {}
-        var yield = "foo";
-    }
-    expect: {
-        import yield from "bar";
-        yield = 123;
-        while (true) {
-            yield:
-            for(;;) break yield;
-
-            foo();
-        }
-        while (true)
-            yield: for(;;) continue yield;
-        function yield(){}
-        function foo(...yield){}
-        try { new Error("") } catch (yield) {}
-        var yield = "foo";
-    }
-}
-
-empty_generator_as_parameter_with_side_effects: {
-    options = {
-        side_effects: true
-    }
-    input: {
-        var GeneratorPrototype = Object.getPrototypeOf(
-          Object.getPrototypeOf(function*() {}())
-        );
-        evaluate(GeneratorPrototype);
-    }
-    expect_exact: "var GeneratorPrototype=Object.getPrototypeOf(Object.getPrototypeOf(function*(){}()));evaluate(GeneratorPrototype);"
-}
-
-empty_generator_as_parameter_without_side_effects: {
-    options = {
-        side_effects: false
-    }
-    input: {
-        var GeneratorPrototype = Object.getPrototypeOf(
-          Object.getPrototypeOf(function*() {}())
-        );
-        evaluate(GeneratorPrototype);
-    }
-    expect_exact: "var GeneratorPrototype=Object.getPrototypeOf(Object.getPrototypeOf(function*(){}()));evaluate(GeneratorPrototype);"
-}
-
-yield_dot: {
-    options = {
-    }
-    input: {
-        function* foo(){
-            yield x.foo;
-            (yield x).foo;
-            yield (yield obj.foo()).bar();
-        }
-    }
-    expect_exact: "function*foo(){yield x.foo;(yield x).foo;yield(yield obj.foo()).bar()}"
-}
-
-yield_sub: {
-    options = {
-    }
-    input: {
-        function* foo(){
-            yield x['foo'];
-            (yield x)['foo'];
-            yield (yield obj.foo())['bar']();
-        }
-    }
-    expect_exact: 'function*foo(){yield x["foo"];(yield x)["foo"];yield(yield obj.foo())["bar"]()}'
-}
-
-yield_as_ES5_property: {
-    input: {
-        "use strict";
-        console.log({yield: 42}.yield);
-    }
-    expect_exact: '"use strict";console.log({yield:42}.yield);'
-    expect_stdout: "42"
-}

test/input/invalid/const.js

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

test/input/invalid/export_1.js

@@ -1,3 +0,0 @@
-{
-    export var V = 1;
-}

test/input/invalid/export_2.js

@@ -1 +0,0 @@
-export class{};

test/input/invalid/export_3.js

@@ -1 +0,0 @@
-export function(){};

test/input/invalid/import.js

@@ -1,3 +0,0 @@
-{
-    import A from "B";
-}

test/input/invalid/sequence.js

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

test/mocha/accessorTokens-1492.js

@@ -16,8 +16,8 @@ describe("Accessor tokens", function() {
                 assert.equal(node.start.pos, 12);
                 assert.equal(node.end.endpos, 46);
 
-                assert(node.key instanceof UglifyJS.AST_SymbolMethod);
-                assert.equal(node.key.start.pos, 12);
+                assert(node.key instanceof UglifyJS.AST_SymbolAccessor);
+                assert.equal(node.key.start.pos, 16);
                 assert.equal(node.key.end.endpos, 22);
 
                 assert(node.value instanceof UglifyJS.AST_Accessor);

test/mocha/arguments.js

@@ -27,253 +27,4 @@ describe("arguments", function() {
         assert.strictEqual(ast.body[0].body[0].uses_arguments, true);
         assert.strictEqual(ast.body[0].body[0].body[0].uses_arguments, false);
     });
-
-    it("Should parse a function containing default assignment correctly", function() {
-        var ast = UglifyJS.parse("function foo(a = 123) {}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].operator, "=");
-        assert(ast.body[0].argnames[0].right instanceof UglifyJS.AST_Number);
-
-        ast = UglifyJS.parse("function foo(a = a) {}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].operator, "=");
-        assert(ast.body[0].argnames[0].right instanceof UglifyJS.AST_SymbolRef);
-    });
-
-    it("Should parse a function containing default assignments in destructuring correctly", function() {
-        var ast = UglifyJS.parse("function foo([a = 123]) {}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 1);
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].names[0].left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].operator, "=");
-        assert(ast.body[0].argnames[0].names[0].right instanceof UglifyJS.AST_Number);
-
-
-        ast = UglifyJS.parse("function foo({a = 123}) {}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 1);
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].key, "a");
-
-        // Property a of first argument
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].names[0].value.left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].argnames[0].names[0].value.right instanceof UglifyJS.AST_Number);
-
-
-        ast = UglifyJS.parse("function foo({a: a = 123}) {}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 1);
-
-        // Content destructuring of first argument
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].key, "a");
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_DefaultAssign);
-
-        // Property a of first argument
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].names[0].value.left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].argnames[0].names[0].value.right instanceof UglifyJS.AST_Number);
-    });
-
-    it("Should parse a function containing default assignments in complex destructuring correctly", function() {
-        var ast = UglifyJS.parse("function foo([a, [b = 123]]){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[1] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].is_array, true);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].argnames[0].names[1].names[0] instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].names[1].names[0].left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].names[0].operator, "=");
-        assert(ast.body[0].argnames[0].names[1].names[0].right instanceof UglifyJS.AST_Number);
-
-
-        ast = UglifyJS.parse("function foo([a, {b: c = 123}]){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[1] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].is_array, false);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].argnames[0].names[1].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].names[0].key, "b");
-        assert(ast.body[0].argnames[0].names[1].names[0].value instanceof UglifyJS.AST_DefaultAssign);
-
-        // Property b of second argument
-        assert(ast.body[0].argnames[0].names[1].names[0].value instanceof UglifyJS.AST_DefaultAssign);
-        assert(ast.body[0].argnames[0].names[1].names[0].value.left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].names[0].value.operator, "=");
-        assert(ast.body[0].argnames[0].names[1].names[0].value.right instanceof UglifyJS.AST_Number);
-
-
-        ast = UglifyJS.parse("function foo({a, b: {b = 123}}){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].key, "a");
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[1] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[1].key, "b");
-        assert(ast.body[0].argnames[0].names[1].value instanceof UglifyJS.AST_Destructuring);
-
-        // Check content of nested destructuring in first parameter
-        var content = ast.body[0].argnames[0].names[1].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof UglifyJS.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof UglifyJS.AST_Number);
-
-
-        ast = UglifyJS.parse("function foo({a: {b = 123}}){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 1);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].key, "a");
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_Destructuring);
-
-        // Check content of nested destructuring
-        content = ast.body[0].argnames[0].names[0].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof UglifyJS.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof UglifyJS.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof UglifyJS.AST_Number);
-    });
-
-    it("Should parse spread correctly", function() {
-        var ast = UglifyJS.parse("function foo(a, b, ...c){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 3);
-
-        // Check parameters
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[1] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[2] instanceof UglifyJS.AST_Expansion);
-        assert(ast.body[0].argnames[2].expression instanceof UglifyJS.AST_SymbolFunarg);
-
-
-        ast = UglifyJS.parse("function foo([a, b, ...c]){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, true);
-
-        // Check content first parameter
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[1] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[2] instanceof UglifyJS.AST_Expansion);
-        assert(ast.body[0].argnames[0].names[2].expression instanceof UglifyJS.AST_SymbolFunarg);
-
-
-        ast = UglifyJS.parse("function foo([a, b, [c, ...d]]){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, true);
-
-        // Check content outer destructuring array
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[1] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[2] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].names[2].is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].argnames[0].names[2].names.length, 2);
-        assert(ast.body[0].argnames[0].names[2].names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[2].names[1] instanceof UglifyJS.AST_Expansion);
-        assert(ast.body[0].argnames[0].names[2].names[1].expression instanceof UglifyJS.AST_SymbolFunarg);
-
-
-        ast = UglifyJS.parse("function foo({a: [b, ...c]}){}");
-        assert(ast.body[0] instanceof UglifyJS.AST_Defun);
-        assert.strictEqual(ast.body[0].argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].argnames[0] instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].is_array, false);
-
-        // Check outer destructuring object
-        assert.strictEqual(ast.body[0].argnames[0].names.length, 1);
-        assert(ast.body[0].argnames[0].names[0] instanceof UglifyJS.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].key, "a");
-        assert(ast.body[0].argnames[0].names[0].value instanceof UglifyJS.AST_Destructuring);
-        assert.strictEqual(ast.body[0].argnames[0].names[0].value.is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].argnames[0].names[0].value.names.length, 2);
-        assert(ast.body[0].argnames[0].names[0].value.names[0] instanceof UglifyJS.AST_SymbolFunarg);
-        assert(ast.body[0].argnames[0].names[0].value.names[1] instanceof UglifyJS.AST_Expansion);
-        assert(ast.body[0].argnames[0].names[0].value.names[1].expression instanceof UglifyJS.AST_SymbolFunarg);
-    });
-});
+});

test/mocha/arrow.js

@@ -1,399 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Arrow functions", function() {
-    it("Should not accept spread tokens on non-last parameters or without arguments parentheses", function() {
-        var tests = [
-            "var a = ...a => {return a.join()}",
-            "var b = (a, ...b, c) => { return a + b.join() + c}",
-            "var c = (...a, b) => a.join()"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected token: expand (...)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept holes in object binding patterns, while still allowing a trailing elision", function() {
-        var tests = [
-            "f = ({, , ...x} = [1, 2]) => {};"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected token: punc (,)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept newlines before arrow token", function() {
-        var tests = [
-            "f = foo\n=> 'foo';",
-            "f = (foo, bar)\n=> 'foo';",
-            "f = ()\n=> 'foo';",
-            "foo((bar)\n=>'baz';);"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected newline before arrow (=>)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept arrow functions in the middle or end of an expression", function() {
-        [
-            "0 + x => 0",
-            "0 + async x => 0",
-            "typeof x => 0",
-            "typeof async x => 0",
-            "typeof (x) => null",
-            "typeof async (x) => null",
-        ].forEach(function(code) {
-            assert.throws(function() {
-                uglify.parse(code);
-            }, function(e) {
-                return e instanceof uglify.JS_Parse_Error && /^Unexpected /.test(e.message);
-            }, code);
-        });
-    });
-
-    it("Should parse a function containing default assignment correctly", function() {
-        var ast = uglify.parse("var a = (a = 123) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_Number);
-
-        ast = uglify.parse("var a = (a = a) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_SymbolRef);
-    });
-
-    it("Should parse a function containing default assignments in destructuring correctly", function() {
-        var ast = uglify.parse("var a = ([a = 123]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a = 123}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // First object element in first argument
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a: a = 123}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-
-        // Content destructuring of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectProperty);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
-    });
-
-    it("Should parse a function containing default assignments in complex destructuring correctly", function() {
-        var ast = uglify.parse("var a = ([a, [b = 123]]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, true);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ([a, {b: c = 123}]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, false);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].key, "b");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a, b: {b = 123}}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // First argument, property 1
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_SymbolFunarg);
-
-        // First argument, property 2
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].key, "b");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].value instanceof uglify.AST_Destructuring);
-
-        // Check content of nested destructuring
-        var content = ast.body[0].definitions[0].value.argnames[0].names[1].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // Content of first property in nested destructuring
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a: {b = 123}}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
-
-        // Check content of nested destructuring
-        content = ast.body[0].definitions[0].value.argnames[0].names[0].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // Check first property of nested destructuring
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof uglify.AST_Number);
-    });
-
-    it("Should parse spread correctly", function() {
-        var ast = uglify.parse("var a = (a, b, ...c) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 3);
-
-        // Check parameters
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[2] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[2].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ([a, b, ...c]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-
-        // Check content first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ([a, b, [c, ...d]]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-
-        // Check content outer destructuring array
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].names.length, 2);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ({a: [b, ...c]}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-
-        // Check outer destructuring object
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.names.length, 2);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1].expression instanceof uglify.AST_SymbolFunarg);
-    });
-
-    it("Should handle arrow function with bind", function() {
-        function minify(code) {
-            return uglify.minify(code, {
-                mangle: false
-            }).code;
-        }
-
-        assert.strictEqual(
-            minify(minify("test(((index) => { console.log(this, index); }).bind(this, 1));")),
-            "test((index=>{console.log(this,index)}).bind(this,1));"
-        );
-        assert.strictEqual(
-            minify(minify('test(((index) => { console.log(this, index); })["bind"](this, 1));')),
-            "test((index=>{console.log(this,index)}).bind(this,1));"
-        );
-    });
-
-});

test/mocha/builtins.js

@@ -1,34 +0,0 @@
-var UglifyJS = require("../../");
-var assert = require("assert");
-
-describe("builtins", function() {
-    it ("Should not mangle builtins", function() {
-        var test = "function foo(something){\n" +
-            "    return [Object,Array,Function,Number,String,Boolean,Error,Math,Date,RegExp,Symbol,Map,Promise,Proxy,Reflect,Set,WeakMap,WeakSet,Float32Array,something];\n" +
-            "};";
-
-        var result = UglifyJS.minify(test, {parse: {bare_returns: true}}).code;
-
-        assert.strictEqual(result.indexOf("something"), -1);
-
-        assert.notEqual(result.indexOf("Object"), -1);
-        assert.notEqual(result.indexOf("Array"), -1);
-        assert.notEqual(result.indexOf("Function"), -1);
-        assert.notEqual(result.indexOf("Number"), -1);
-        assert.notEqual(result.indexOf("String"), -1);
-        assert.notEqual(result.indexOf("Boolean"), -1);
-        assert.notEqual(result.indexOf("Error"), -1);
-        assert.notEqual(result.indexOf("Math"), -1);
-        assert.notEqual(result.indexOf("Date"), -1);
-        assert.notEqual(result.indexOf("RegExp"), -1);
-        assert.notEqual(result.indexOf("Symbol"), -1);
-        assert.notEqual(result.indexOf("Promise"), -1);
-        assert.notEqual(result.indexOf("Proxy"), -1);
-        assert.notEqual(result.indexOf("Reflect"), -1);
-        assert.notEqual(result.indexOf("Set"), -1);
-        assert.notEqual(result.indexOf("WeakMap"), -1);
-        assert.notEqual(result.indexOf("WeakSet"), -1);
-        assert.notEqual(result.indexOf("Map"), -1);
-        assert.notEqual(result.indexOf("Float32Array"), -1);
-    });
-});

test/mocha/class.js

@@ -1,57 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Class", function() {
-    it("Should not accept spread on non-last parameters in methods", function() {
-        var tests = [
-            "class foo { bar(...a, b) { return a.join(b) } }",
-            "class foo { bar(a, b, ...c, d) { return c.join(a + b) + d } }",
-            "class foo { *bar(...a, b) { return a.join(b) } }",
-            "class foo { *bar(a, b, ...c, d) { return c.join(a + b) + d } }"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Unexpected token: /.test(e.message);
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-
-    it("Should return the correct token for class methods", function() {
-        var tests = [
-            {
-                code: "class foo{static test(){}}",
-                token_value_start: "static",
-                token_value_end: "}"
-            },
-            {
-                code: "class bar{*procedural(){}}",
-                token_value_start: "*",
-                token_value_end: "}"
-            },
-            {
-                code: "class foobar{aMethod(){}}",
-                token_value_start: "aMethod",
-                token_value_end: "}"
-            },
-            {
-                code: "class foobaz{get something(){}}",
-                token_value_start: "get",
-                token_value_end: "}"
-            }
-        ];
-
-        for (var i = 0; i < tests.length; i++) {
-            var ast = uglify.parse(tests[i].code);
-            assert.strictEqual(ast.body[0].properties[0].start.value, tests[i].token_value_start);
-            assert.strictEqual(ast.body[0].properties[0].end.value, tests[i].token_value_end);
-        }
-    });
-});

test/mocha/cli.js

@@ -1,7 +1,6 @@
 var assert = require("assert");
 var exec = require("child_process").exec;
 var readFileSync = require("fs").readFileSync;
-var semver = require("semver");
 
 function read(path) {
     return readFileSync(path, "utf8");
@@ -10,11 +9,9 @@ function read(path) {
 describe("bin/uglifyjs", function () {
     var uglifyjscmd = '"' + process.argv[0] + '" bin/uglifyjs';
     it("should produce a functional build when using --self", function (done) {
-        this.timeout(60000);
+        this.timeout(30000);
 
-        var command = uglifyjscmd + ' --self -mc ecma=';
-        command += semver.satisfies(process.version, ">=4") ? "6" : "5";
-        command += ',passes=3,keep_fargs=false,unsafe --wrap WrappedUglifyJS';
+        var command = uglifyjscmd + ' --self -cm --wrap WrappedUglifyJS';
 
         exec(command, function (err, stdout) {
             if (err) throw err;
@@ -401,21 +398,6 @@ describe("bin/uglifyjs", function () {
             done();
         });
     });
-    it("Should throw syntax error (const a)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/const.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/const.js:7,11",
-                "    const a;",
-                "           ^",
-                "ERROR: Missing initializer in const declaration"
-            ].join("\n"));
-            done();
-        });
-    });
     it("Should throw syntax error (delete x)", function(done) {
         var command = uglifyjscmd + ' test/input/invalid/delete.js';
 
@@ -486,7 +468,7 @@ describe("bin/uglifyjs", function () {
                 "Parse error at test/input/invalid/try.js:7,18",
                 "    try {} catch (eval) {}",
                 "                  ^",
-                "ERROR: Unexpected eval identifier as parameter inside strict mode"
+                "ERROR: Unexpected eval in strict mode"
             ].join("\n"));
             done();
         });
@@ -536,81 +518,6 @@ describe("bin/uglifyjs", function () {
             done();
         });
     });
-    it("Should throw syntax error (block-level export)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/export_1.js -m';
-
-        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/export_1.js:2,4",
-                "    export var V = 1;",
-                "    ^",
-                "ERROR: Export statement may only appear at top level"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (block-level import)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/import.js -m';
-
-        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/import.js:2,4",
-                '    import A from "B";',
-                "    ^",
-                "ERROR: Import statement may only appear at top level"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (anonymous class)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/export_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/export_2.js:1,12",
-                "export class{};",
-                "            ^",
-                "ERROR: Unexpected token: punc ({)"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (anonymous function)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/export_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/export_3.js:1,15",
-                "export function(){};",
-                "               ^",
-                "ERROR: Unexpected token: punc (()"
-            ].join("\n"));
-            done();
-        });
-    });
-    it("Should throw syntax error (spread in sequence)", function(done) {
-        var command = uglifyjscmd + ' test/input/invalid/sequence.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/sequence.js:1,4",
-                "(a, ...b);",
-                "    ^",
-                "ERROR: Unexpected token: expand (...)"
-            ].join("\n"));
-            done();
-        });
-    });
     it("Should throw syntax error (for-in init)", function(done) {
         var command = uglifyjscmd + ' test/input/invalid/for-in_1.js';
 

test/mocha/comment.js

@@ -31,8 +31,7 @@ describe("Comment", function() {
             "/*Some comment 2\r\n\r\n\r\n*/\r\n>\n\n\n\n\n\n",
             "/*Some comment 3\r\r\r*/\r>\n\n\n\n\n\n",
             "/*Some comment 4\u2028\u2028\u2028*/\u2028>\n\n\n\n\n\n",
-            "/*Some comment 5\u2029\u2029\u2029*/\u2029>\n\n\n\n\n\n",
-            "/*Some comment 6\udbff\udfff\udbff\udfff\n\n\n*/\n>\n\n\n\n\n"
+            "/*Some comment 5\u2029\u2029\u2029*/\u2029>\n\n\n\n\n\n"
         ];
 
         var fail = function(e) {

test/mocha/destructuring.js

@@ -1,138 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Destructuring", function() {
-    it("Should generate similar trees for destructuring in left hand side expressions, definitions, functions and arrow functions", function() {
-        var patterns = [
-            "[]",
-            "{}",
-
-            "[a, b, c]",
-            "{a: b, c: d}",
-            "{a}",
-            "{a, b}",
-
-            "{a: {}}",
-            "{a: []}",
-            "[{}]",
-            "[[]]",
-            "{a: {b}}",
-
-            // Can't do `a = 123` with lhs expression, so only test in destructuring
-            "[foo = bar]",
-            "{a = 123}",
-            "[{foo: abc = 123}]",
-            "{foo: [abc = 123]}",
-
-            "[...foo]",
-            "[...{}]",
-            "[...[]]"
-
-            // Can't do `...` because that is an invalid lhs expression, spread in array destructuring should be fine though
-        ];
-
-        var types = [
-            {
-                name: "lhs",
-                symbolType: uglify.AST_SymbolRef,
-                tree: function (ast) {
-                    return ast.body[0].body.left;
-                },
-                generate: function (code) {
-                    return "(" + code + " = a)";
-                }
-            },
-            {
-                name: "var",
-                symbolType: uglify.AST_SymbolVar,
-                tree: function (ast) {
-                    return ast.body[0].definitions[0].name;
-                },
-                generate: function (code) {
-                    return "var " + code + " = a";
-                }
-            },
-            {
-                name: "function",
-                symbolType: uglify.AST_SymbolFunarg,
-                tree: function (ast) {
-                    return ast.body[0].argnames[0];
-                },
-                generate: function (code) {
-                    return "function a(" + code + ") {}";
-                }
-            },
-            {
-                name: "arrow",
-                symbolType: uglify.AST_SymbolFunarg,
-                tree: function (ast) {
-                    return ast.body[0].definitions[0].value.argnames[0];
-                },
-                generate: function (code) {
-                    return "var a = (" + code + ") => {}";
-                }
-            }
-        ];
-
-        var walker = function(type, ref, code, result) {
-            var w = new uglify.TreeWalker(function(node) {
-                if (w.parent() instanceof uglify.AST_DefaultAssign &&
-                    w.parent().right === node
-                ) {
-                    return true; // Don't check the content of the default assignment
-
-                } else if (node instanceof uglify.AST_Symbol) {
-                    assert(node instanceof type.symbolType,
-                        node.TYPE + " while " + type.symbolType.TYPE + " expected at pos " +
-                        node.start.pos + " in `" + code + "`  (" + ref + ")"
-                    );
-
-                    result.push([
-                        new uglify.AST_Symbol({
-                            start: node.start,
-                            name: node.name,
-                            end: node.end
-                        }),
-                        w.parent()
-                    ]);
-
-                    return;
-                }
-
-                result.push([node, w.parent()]);
-            });
-
-            return w;
-        };
-
-        var getNodeType = function(node) {
-            return node[0].TYPE + (node[1] ? " " + node[1].TYPE : "");
-        }
-
-        for (var i = 0; i < patterns.length; i++) {
-            var results = [];
-
-            for (var j = 0; j < types.length; j++) {
-                var code = types[j].generate(patterns[i])
-                var ast = types[j].tree(
-                    uglify.parse(code)
-                );
-                results.push([]);
-                ast.walk(walker(
-                    types[j],
-                    "`" + patterns[i] + "` on " + types[j].name,
-                    code,
-                    results[j]
-                ));
-
-                if (j > 0) {
-                    assert.deepEqual(
-                        results[0].map(getNodeType),
-                        results[j].map(getNodeType),
-                        "AST disagree on " + patterns[i] + " with " + types[j].name
-                    );
-                }
-            }
-        }
-    });
-});

test/mocha/directives.js

@@ -62,10 +62,10 @@ describe("Directives", function() {
     it("Should know which strings are directive and which ones are not", function() {
         var test_directive = function(tokenizer, test) {
             test.directives.map(function(directive) {
-                assert.strictEqual(tokenizer.has_directive(directive), true, "Didn't found directive `" + directive + "` at the end of `" + test.input + '`');
+                assert.strictEqual(tokenizer.has_directive(directive), true, directive + " in " + test.input);
             });
             test.non_directives.map(function(fake_directive) {
-                assert.strictEqual(tokenizer.has_directive(fake_directive), false, "Unexpectedly found directive `" + fake_directive + "` at the end of `" + test.input + '`');
+                assert.strictEqual(tokenizer.has_directive(fake_directive), false, fake_directive + " in " + test.input);
             });
         }
 
@@ -156,16 +156,6 @@ describe("Directives", function() {
                 input: '"use strict";try{"use asm";',
                 directives: ["use strict"],
                 non_directives: ["use\nstrict", "use \nstrict", "use asm"]
-            },
-            {
-                input: 'class foo {',
-                directives: ["use strict"],
-                non_directives: ["use\nstrict", "use asm"]
-            },
-            {
-                input: 'class foo {}',
-                directives: [],
-                non_directives: ["use strict", "use asm", "use\nstrict"]
             }
         ];
 
@@ -388,44 +378,4 @@ describe("Directives", function() {
             );
         }
     });
-    it("Should be detect implicit usages of strict mode from tree walker", function() {
-        var tests = [
-            {
-                input: 'class foo {bar(){_check_}}',
-                directives: ["use strict"],
-                non_directives: ["use bar"]
-            },
-            {
-                input: 'class foo {bar(){}}_check_',
-                directives: [],
-                non_directives: ["use strict", "use bar"]
-            }
-        ];
-
-        var i = 0;
-        var checked;
-        var checkWalker = new uglify.TreeWalker(function(node, descend) {
-            if (node instanceof uglify.AST_Symbol && node.name === "_check_") {
-                checked = true;
-                for (var j = 0; j < tests[i].directives.length; j++) {
-                    assert.ok(checkWalker.has_directive(tests[i].directives[j]),
-                        "Did not found directive '" + tests[i].directives[j] +  "' in test " + tests[i].input)
-                }
-                for (var k = 0; k < tests[i].non_directives.length; k++) {
-                    assert.equal(checkWalker.has_directive(tests[i].non_directives[k]), undefined,
-                        "Found directive '" + tests[i].non_directives[k] +  "' in test " + tests[i].input)
-                }
-            }
-        });
-
-        for (; i < tests.length; i++) {
-            // Do tests - iterate the ast in each test - check only when _check_ occurs - fail when no _check_ has been found
-            checked = false;
-            var ast = uglify.parse(tests[i].input);
-            ast.walk(checkWalker);
-            if (!checked) {
-                throw "No _check_ symbol found in " + tests[i].input;
-            }
-        }
-    });
 });

test/mocha/eof.js

@@ -1,35 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("EOF", function() {
-    it("Should test code for at least throwing syntax error when incomplete", function() {
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        var parse = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-        // Chops off 1 char at a time until limit or start of string is reached
-        // The passed code must still be valid when unchopped
-        var test_eol = function(input, chopLimit) {
-            if (chopLimit === undefined) {
-                chopLimit = input.length - 1;
-            }
-
-            assert.doesNotThrow(parse(input), "Expected valid code for \n" + input);
-
-            for (var i = input.length - 1; chopLimit > 0; chopLimit--, i--) {
-                var code = input.substr(0, i);
-                assert.throws(parse(code), error, code);
-            }
-        }
-
-        test_eol("var \\u1234", 7); // Incomplete identifier
-        test_eol("'Incomplete string'");
-        test_eol("/Unterminated regex/");
-        test_eol("` Unterminated template string`");
-        test_eol("/* Unfinishing multiline comment */");
-    });
-});

test/mocha/export.js

@@ -1,39 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Export", function() {
-    it("Should parse export directives", function() {
-        var inputs = [
-            ['export * from "a.js"', ['*'], "a.js"],
-            ['export {A} from "a.js"', ['A'], "a.js"],
-            ['export {A as X} from "a.js"', ['X'], "a.js"],
-            ['export {A as Foo, B} from "a.js"', ['Foo', 'B'], "a.js"],
-            ['export {A, B} from "a.js"', ['A', 'B'], "a.js"],
-        ];
-
-        function test(code) {
-            return uglify.parse(code);
-        }
-
-        function extractNames(symbols) {
-            var ret = [];
-            for (var i = 0; i < symbols.length; i++) {
-                ret.push(symbols[i].foreign_name.name);
-            }
-            return ret;
-        }
-
-        for (var i = 0; i < inputs.length; i++) {
-            var ast = test(inputs[i][0]);
-            var names = inputs[i][1];
-            var filename = inputs[i][2];
-            assert(ast instanceof uglify.AST_Toplevel);
-            assert.equal(ast.body.length, 1);
-            var st = ast.body[0];
-            assert(st instanceof uglify.AST_Export);
-            var actualNames = extractNames(st.exported_names);
-            assert.deepEqual(actualNames, names);
-            assert.equal(st.module_name.value, filename);
-        }
-    });
-});

test/mocha/expression.js

@@ -1,32 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Expression", function() {
-    it("Should not allow the first exponentiation operator to be prefixed with an unary operator", function() {
-        var tests = [
-            "+5 ** 3",
-            "-5 ** 3",
-            "~5 ** 3",
-            "!5 ** 3",
-            "void 5 ** 3",
-            "typeof 5 ** 3",
-            "delete 5 ** 3",
-            "var a = -(5) ** 3;"
-        ];
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Unexpected token: operator \((?:[!+~-]|void|typeof|delete)\)/.test(e.message);
-        }
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail, tests[i]);
-        }
-    });
-});

test/mocha/function.js

@@ -1,288 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Function", function() {
-    it ("Should parse binding patterns correctly", function() {
-        // Function argument nodes are correct
-        function get_args(args) {
-            return args.map(function (arg) {
-                return [arg.TYPE, arg.name];
-            });
-        }
-
-        // Destructurings as arguments
-        var destr_fun1 = uglify.parse('(function ({a, b}) {})').body[0].body;
-        var destr_fun2 = uglify.parse('(function ([a, [b]]) {})').body[0].body;
-        var destr_fun3 = uglify.parse('({a, b}) => null').body[0].body;
-        var destr_fun4 = uglify.parse('([a, [b]]) => null').body[0].body;
-
-        assert.equal(destr_fun1.argnames.length, 1);
-        assert.equal(destr_fun2.argnames.length, 1);
-        assert.equal(destr_fun3.argnames.length, 1);
-        assert.equal(destr_fun4.argnames.length, 1);
-
-        var destruct1 = destr_fun1.argnames[0];
-        var destruct2 = destr_fun2.argnames[0];
-        var destruct3 = destr_fun3.argnames[0];
-        var destruct4 = destr_fun4.argnames[0];
-
-        assert(destruct1 instanceof uglify.AST_Destructuring);
-        assert(destruct2 instanceof uglify.AST_Destructuring);
-        assert(destruct3 instanceof uglify.AST_Destructuring);
-        assert(destruct4 instanceof uglify.AST_Destructuring);
-        assert(destruct2.names[1] instanceof uglify.AST_Destructuring);
-        assert(destruct4.names[1] instanceof uglify.AST_Destructuring);
-
-        assert.equal(destruct1.start.value, '{');
-        assert.equal(destruct1.end.value, '}');
-        assert.equal(destruct2.start.value, '[');
-        assert.equal(destruct2.end.value, ']');
-        assert.equal(destruct3.start.value, '{');
-        assert.equal(destruct3.end.value, '}');
-        assert.equal(destruct4.start.value, '[');
-        assert.equal(destruct4.end.value, ']');
-
-        assert.equal(destruct1.is_array, false);
-        assert.equal(destruct2.is_array, true);
-        assert.equal(destruct3.is_array, false);
-        assert.equal(destruct4.is_array, true);
-
-        // destruct 1
-        assert.deepEqual(
-            [
-                destruct1.names[0].TYPE,
-                destruct1.names[0].key,
-                destruct1.names[0].value.name
-            ],
-            ['ObjectKeyVal', 'a', 'a']
-        );
-        assert.deepEqual(
-            [
-                destruct1.names[1].TYPE,
-                destruct1.names[1].key,
-                destruct1.names[1].value.name
-            ],
-            ['ObjectKeyVal', 'b', 'b']
-        );
-
-        // destruct 2
-        assert.deepEqual(
-            [
-                destruct2.names[0].TYPE,
-                destruct2.names[0].name
-            ],
-            ['SymbolFunarg', 'a']
-        );
-        assert.deepEqual(
-            [
-                destruct2.names[1].names[0].TYPE,
-                destruct2.names[1].names[0].name
-            ],
-            ['SymbolFunarg', 'b']
-        );
-
-        // destruct 3
-        assert.strictEqual(typeof destruct3.names[0].key, "string");
-        assert.strictEqual(destruct3.names[0].key, "a");
-        assert.strictEqual(destruct3.names[0].value.TYPE, "SymbolFunarg");
-        assert.strictEqual(destruct3.names[0].value.name, "a");
-        assert.strictEqual(typeof destruct3.names[1].key, "string");
-        assert.strictEqual(destruct3.names[1].key, "b");
-        assert.strictEqual(destruct3.names[1].value.TYPE, "SymbolFunarg");
-        assert.strictEqual(destruct3.names[1].value.name, "b");
-
-        // destruct 4
-        assert.deepEqual(
-            [
-                destruct4.names[0].TYPE,
-                destruct4.names[0].name
-            ],
-            ['SymbolFunarg', 'a']
-        );
-        assert.strictEqual(destruct4.names[1].TYPE, "Destructuring");
-        assert.deepEqual(
-            [
-                destruct4.names[1].names[0].TYPE,
-                destruct4.names[1].names[0].name
-            ],
-            ['SymbolFunarg', 'b']
-        );
-
-        assert.deepEqual(
-            get_args(destr_fun1.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun2.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun3.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun4.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-
-        // Making sure we don't accidentally accept things which
-        // Aren't argument destructurings
-
-        assert.throws(function () {
-            uglify.parse('(function ( { a, [ b ] } ) { })')
-        });
-
-        assert.throws(function () {
-            uglify.parse('(function (1) { })');
-        }, /Invalid function parameter/);
-
-        assert.throws(function () {
-            uglify.parse('(function (this) { })');
-        });
-
-        assert.throws(function () {
-            uglify.parse('(function ([1]) { })');
-        }, /Invalid function parameter/);
-
-        assert.throws(function () {
-            uglify.parse('(function [a] { })');
-        });
-
-        // generators
-        var generators_def = uglify.parse('function* fn() {}').body[0];
-        assert.equal(generators_def.is_generator, true);
-
-        assert.throws(function () {
-            uglify.parse('function* (){ }');
-        });
-
-        var generators_yield_def = uglify.parse('function* fn() {\nyield remote();\}').body[0].body[0];
-        assert.strictEqual(generators_yield_def.body.is_star, false);
-    });
-    it("Should not accept spread on non-last parameters", function() {
-        var tests = [
-            "var a = function(...a, b) { return a.join(b) }",
-            "var b = function(a, b, ...c, d) { return c.join(a + b) + d }",
-            "function foo(...a, b) { return a.join(b) }",
-            "function bar(a, b, ...c, d) { return c.join(a + b) + d }",
-            "var a = function*(...a, b) { return a.join(b) }",
-            "var b = function*(a, b, ...c, d) { return c.join(a + b) + d }",
-            "function* foo(...a, b) { return a.join(b) }",
-            "function* bar(a, b, ...c, d) { return c.join(a + b) + d }"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Unexpected token: /.test(e.message);
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept empty parameters after elision", function() {
-        var tests = [
-            "(function(,){})()",
-            "(function(a,){})()",
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code, { ecma: 5 });
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-    it("Should accept trailing commas only for ES8", function() {
-        [
-            "new Foo(a, );",
-            "async(...[1, 2], );",
-            "console.log(...[1, 2], );",
-            "!function(a, b, ){ console.log(a + b); }(3, 4, );",
-        ].forEach(function(code) {
-            uglify.parse(code, { ecma: 8 });
-            assert.throws(function() {
-                uglify.parse(code, { ecma: 6 });
-            }, function(e) {
-                return e instanceof uglify.JS_Parse_Error;
-            }, code);
-        });
-    });
-    it("Should not accept invalid trailing commas", function() {
-        var tests = [
-            "f(, );",
-            "(, ) => {};",
-            "(...p, ) => {};",
-            "function f(, ) {}",
-            "function f(...p, ) {}",
-            "function foo(a, b, , ) {}",
-            'console.log("hello", , );',
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code, { ecma: 8 });
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-    it("Should not accept an initializer when parameter is a rest parameter", function() {
-        var tests = [
-            "(function(...a = b){})()",
-            "(function(a, ...b = [c, d]))"
-        ];
-        var test = function(code) {
-            return function () {
-                uglify.parse(code);
-            }
-        }
-        var error = function (e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-    it("Shoult not accept duplicated identifiers inside parameters in strict mode or when using default assigment or spread", function() {
-        // From: ES2016 9.2.12 FunctionDeclarationInstantiation (func, argumentsList)
-        // NOTE Early errors ensure that duplicate parameter names can only occur
-        // in non-strict functions that do not have parameter default values or
-        // rest parameters.
-        var tests = [
-            "(function(a = 1, a){})()",
-            "(function(a, [a = 3]){})()",
-            "(function(a, b, c, d, [{e: [...a]}]){})()",
-            "'use strict'; (function(a, a){})",
-            "(function({a, a = b}))",
-            "(function(a, [...a]){})",
-            "(function(a, ...a){})",
-            "(function(a, [a, ...b]){})",
-            "(function(a, {b: a, c: [...d]}){})",
-            "(function(a, a, {b: [...c]}){})"
-        ];
-        var test = function(code) {
-            return function () {
-                uglify.parse(code);
-            }
-        }
-        var error = function (e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Parameter [a-zA-Z]+ was used already$/.test(e.message);
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-});

test/mocha/getter-setter.js

@@ -71,7 +71,7 @@ describe("Getters and setters", function() {
         var fail = function(data) {
             return function (e) {
                 return e instanceof UglifyJS.JS_Parse_Error &&
-                    /^Unexpected token: /.test(e.message);
+                    e.message === "Unexpected token: operator (" + data.operator + ")";
             };
         };
 

test/mocha/glob.js

@@ -26,12 +26,12 @@ describe("bin/uglifyjs with input file globs", function() {
         });
     });
     it("bin/uglifyjs with multiple input file globs.", function(done) {
-        var command = uglifyjscmd + ' "test/input/issue-1242/???.es5" "test/input/issue-1242/*.js" -mc toplevel';
+        var command = uglifyjscmd + ' "test/input/issue-1242/???.es5" "test/input/issue-1242/*.js" -mc toplevel,passes=2';
 
         exec(command, function(err, stdout) {
             if (err) throw err;
 
-            assert.strictEqual(stdout, 'var print=console.log.bind(console);print("qux",9,6),print("Foo:",2*11);\n');
+            assert.strictEqual(stdout, 'var print=console.log.bind(console);print("qux",9,6),print("Foo:",22);\n');
             done();
         });
     });

test/mocha/lhs-expressions.js

@@ -1,265 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Left-hand side expressions", function () {
-    it("Should parse destructuring with const/let/var correctly", function () {
-        var decls = uglify.parse('var {a,b} = foo, { c, d } = bar');
-
-        assert.equal(decls.body[0].TYPE, 'Var');
-        assert.equal(decls.body[0].definitions.length, 2);
-
-        // Item 1
-        assert.equal(decls.body[0].definitions[0].name.TYPE, 'Destructuring');
-        assert.equal(decls.body[0].definitions[0].value.TYPE, 'SymbolRef');
-
-        // Item 2
-        assert.equal(decls.body[0].definitions[1].name.TYPE, 'Destructuring');
-        assert.equal(decls.body[0].definitions[1].value.TYPE, 'SymbolRef');
-
-        var nested_def = uglify.parse('var [{x}] = foo').body[0].definitions[0];
-
-        assert.equal(nested_def.name.names[0].names[0].TYPE, 'ObjectKeyVal');
-        assert.equal(nested_def.name.names[0].names[0].value.TYPE, 'SymbolVar');
-        assert.equal(nested_def.name.names[0].names[0].key, 'x');
-        assert.equal(nested_def.name.names[0].names[0].value.name, 'x');
-
-        var holey_def = uglify.parse('const [,,third] = [1,2,3]').body[0].definitions[0];
-
-        assert.equal(holey_def.name.names[0].TYPE, 'Hole');
-        assert.equal(holey_def.name.names[1].TYPE, 'Hole');
-        assert.equal(holey_def.name.names[2].TYPE, 'SymbolConst');
-
-        var expanding_def = uglify.parse('var [first, ...rest] = [1,2,3]').body[0].definitions[0];
-
-        assert.equal(expanding_def.name.names[0].TYPE, 'SymbolVar');
-        assert.equal(expanding_def.name.names[1].TYPE, 'Expansion');
-        assert.equal(expanding_def.name.names[1].expression.TYPE, 'SymbolVar');
-    });
-
-    it("Parser should use AST_Array for array literals", function() {
-        var ast = uglify.parse('["foo", "bar"]');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-        assert(ast.body[0].body instanceof uglify.AST_Array);
-
-        ast = uglify.parse('a = ["foo"]');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_SymbolRef);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Array);
-    });
-
-    it("Parser should use AST_Object for object literals", function() {
-        var ast = uglify.parse('({foo: "bar"})');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-        assert(ast.body[0].body instanceof uglify.AST_Object);
-
-        // This example should be fine though
-        ast = uglify.parse('a = {foo: "bar"}');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_SymbolRef);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Object);
-    });
-
-    it("Parser should use AST_Destructuring for array assignment patterns", function() {
-        var ast = uglify.parse('[foo, bar] = [1, 2]');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, true);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Array);
-    });
-
-    it("Parser should use AST_Destructuring for object assignment patterns", function() {
-        var ast = uglify.parse('({a: b, b: c} = {b: "c", c: "d"})');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, false);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Object);
-    });
-
-    it("Parser should be able to handle nested destructuring", function() {
-        var ast = uglify.parse('[{a,b},[d, e, f, {g, h}]] = [{a: 1, b: 2}, [3, 4, 5, {g: 6, h: 7}]]');
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, true);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Array);
-
-        assert(ast.body[0].body.left.names[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.names[0].is_array, false);
-
-        assert(ast.body[0].body.left.names[1] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.names[1].is_array, true);
-
-        assert(ast.body[0].body.left.names[1].names[3] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.names[1].names[3].is_array, false);
-    });
-
-    it("Should handle spread operator in destructuring", function() {
-        var ast = uglify.parse("[a, b, ...c] = [1, 2, 3, 4, 5]");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, true);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_Array);
-
-        assert(ast.body[0].body.left.names[0] instanceof uglify.AST_SymbolRef);
-        assert(ast.body[0].body.left.names[1] instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[2] instanceof uglify.AST_Expansion);
-    });
-
-    it("Should handle default assignments in destructuring", function() {
-        var ast = uglify.parse("({x: v, z = z + 5} = obj);");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, false);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[0].value instanceof uglify.AST_SymbolRef);
-        assert.strictEqual(ast.body[0].body.left.names[0].start.value, "x");
-
-        assert(ast.body[0].body.left.names[1].value instanceof uglify.AST_DefaultAssign);
-        assert.strictEqual(ast.body[0].body.left.names[1].start.value, "z");
-        assert(ast.body[0].body.left.names[1].value.left instanceof uglify.AST_SymbolRef);
-        assert.strictEqual(ast.body[0].body.left.names[1].value.operator, "=");
-        assert(ast.body[0].body.left.names[1].value.right instanceof uglify.AST_Binary);
-
-
-        ast = uglify.parse("({x = 123} = obj);");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, false);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert.strictEqual(ast.body[0].body.left.names[0].value.operator, "=");
-        assert(ast.body[0].body.left.names[0].value.left instanceof uglify.AST_SymbolRef);
-
-
-        ast = uglify.parse("[x, y = 5] = foo");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, true);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[0] instanceof uglify.AST_SymbolRef);
-        assert.strictEqual(ast.body[0].body.left.names[0].start.value, "x");
-
-        assert(ast.body[0].body.left.names[1] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].body.left.names[1].left instanceof uglify.AST_SymbolRef);
-        assert.strictEqual(ast.body[0].body.left.names[1].start.value, "y");
-    });
-
-    it("Should handle default assignments containing assignments in a destructuring", function() {
-        var ast = uglify.parse("[x, y = z = 2] = a;");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, true);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[0] instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[1] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].body.left.names[1].left instanceof uglify.AST_SymbolRef);
-        assert.equal(ast.body[0].body.left.names[1].operator, "=");
-        assert(ast.body[0].body.left.names[1].right instanceof uglify.AST_Assign);
-
-        assert(ast.body[0].body.left.names[1].right.left instanceof uglify.AST_SymbolRef);
-        assert.equal(ast.body[0].body.left.names[1].right.operator, "=");
-        assert(ast.body[0].body.left.names[1].right.right instanceof uglify.AST_Number);
-
-        ast = uglify.parse("({a: a = 123} = obj)");
-        assert(ast.body[0] instanceof uglify.AST_SimpleStatement);
-
-        assert(ast.body[0].body instanceof uglify.AST_Assign);
-        assert(ast.body[0].body.left instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].body.left.is_array, false);
-        assert.equal(ast.body[0].body.operator, "=");
-        assert(ast.body[0].body.right instanceof uglify.AST_SymbolRef);
-
-        assert(ast.body[0].body.left.names[0] instanceof uglify.AST_ObjectProperty);
-        assert.strictEqual(ast.body[0].body.left.names[0].key, "a");
-        assert(ast.body[0].body.left.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].body.left.names[0].value.left instanceof uglify.AST_SymbolRef);
-        assert.strictEqual(ast.body[0].body.left.names[0].value.operator, "=");
-        assert(ast.body[0].body.left.names[0].value.right instanceof uglify.AST_Number);
-    });
-
-    it("Should allow multiple spread in array literals", function() {
-        var ast = uglify.parse("var a = [1, 2, 3], b = [4, 5, 6], joined; joined = [...a, ...b]");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert(ast.body[1] instanceof uglify.AST_SimpleStatement);
-
-        // Check statement containing array with spreads
-        assert(ast.body[1].body instanceof uglify.AST_Assign);
-        assert(ast.body[1].body.left instanceof uglify.AST_SymbolRef);
-        assert.equal(ast.body[1].body.operator, "=");
-        assert(ast.body[1].body.right instanceof uglify.AST_Array);
-
-        // Check array content
-        assert.strictEqual(ast.body[1].body.right.elements.length, 2);
-        assert(ast.body[1].body.right.elements[0] instanceof uglify.AST_Expansion);
-        assert(ast.body[1].body.right.elements[0].expression instanceof uglify.AST_SymbolRef);
-        assert(ast.body[1].body.right.elements[0].expression.name, "a");
-        assert(ast.body[1].body.right.elements[1] instanceof uglify.AST_Expansion);
-        assert(ast.body[1].body.right.elements[1].expression instanceof uglify.AST_SymbolRef);
-        assert(ast.body[1].body.right.elements[1].expression.name, "b");
-    });
-
-    it("Should not allow spread on invalid locations", function() {
-        var expect = function(input, expected) {
-            var execute = function(input) {
-                return function() {
-                    uglify.parse(input);
-                }
-            }
-            var check = function(e) {
-                return e instanceof uglify.JS_Parse_Error &&
-                    e.message === expected;
-            }
-
-            assert.throws(execute(input), check);
-        }
-
-        // Spreads are not allowed in destructuring array if it's not the last element
-        expect("[...a, ...b] = [1, 2, 3, 4]", "Spread must the be last element in destructuring array");
-
-        // Multiple spreads are not allowed in destructuring array
-        expect("[...a, ...b] = [1, 2, 3, 4]", "Spread must the be last element in destructuring array");
-
-        // Spread in obvious object pattern
-        expect("({...a} = foo)", "Unexpected token: expand (...)");
-
-        // Spread in block should not be allowed
-        expect("{...a} = foo", "Unexpected token: expand (...)");
-
-        // Not in standard yet
-        expect("let foo = {bar: 42}, bar; bar = {...foo}", "Unexpected token: expand (...)");
-    });
-});

test/mocha/new.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("New", function() {
     it("Should add trailing parentheses for new expressions with zero arguments in beautify mode", function() {
@@ -83,11 +83,4 @@ describe("New", function() {
             );
         }
     });
-
-    it("Should check target in new.target", function() {
-        assert.throws(function() {uglify.parse("new.blah")}, function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "Unexpected token name «blah», expected name «target»";
-        });
-    });
 });

test/mocha/object.js

@@ -1,131 +0,0 @@
-var Uglify = require("../node");
-var assert = require("assert");
-
-describe("Object", function() {
-    it("Should allow objects to have a methodDefinition as property", function() {
-        var code = "var a = {test() {return true;}}";
-        assert.equal(Uglify.minify(code).code, "var a={test(){return!0}};");
-    });
-
-    it("Should not allow objects to use static keywords like in classes", function() {
-        var code = "{static test() {}}";
-        var parse = function() {
-            Uglify.parse(code);
-        }
-        var expect = function(e) {
-            return e instanceof Uglify.JS_Parse_Error;
-        }
-        assert.throws(parse, expect);
-    });
-
-    it("Should not allow objects to have static computed properties like in classes", function() {
-        var code = "var foo = {static [123](){}}";
-        var parse = function() {
-            console.log(Uglify.parse(code).body[0].body[0]);
-        }
-        var expect = function(e) {
-            return e instanceof Uglify.JS_Parse_Error;
-        }
-        assert.throws(parse, expect);
-    });
-    it("Should not accept operator tokens as property/getter/setter name", function() {
-        var illegalOperators = [
-            "++",
-            "--",
-            "+",
-            "-",
-            "!",
-            "~",
-            "&",
-            "|",
-            "^",
-            "*",
-            "/",
-            "%",
-            ">>",
-            "<<",
-            ">>>",
-            "<",
-            ">",
-            "<=",
-            ">=",
-            "==",
-            "===",
-            "!=",
-            "!==",
-            "?",
-            "=",
-            "+=",
-            "-=",
-            "/=",
-            "*=",
-            "%=",
-            ">>=",
-            "<<=",
-            ">>>=",
-            "|=",
-            "^=",
-            "&=",
-            "&&",
-            "||"
-        ];
-        var generator = function() {
-            var results = [];
-
-            for (var i in illegalOperators) {
-                results.push({
-                    code: "var obj = { get " + illegalOperators[i] + "() { return test; }};",
-                    operator: illegalOperators[i],
-                    method: "get"
-                });
-                results.push({
-                    code: "var obj = { set " + illegalOperators[i] + "(value) { test = value}};",
-                    operator: illegalOperators[i],
-                    method: "set"
-                });
-                results.push({
-                    code: "var obj = { " + illegalOperators[i] + ': "123"};',
-                    operator: illegalOperators[i],
-                    method: "key"
-                });
-                results.push({
-                    code: "var obj = { " + illegalOperators[i] + "(){ return test; }};",
-                    operator: illegalOperators[i],
-                    method: "method"
-                });
-            }
-
-            return results;
-        };
-
-        var testCase = function(data) {
-            return function() {
-                Uglify.parse(data.code);
-            };
-        };
-
-        var fail = function(data) {
-            return function (e) {
-                return e instanceof Uglify.JS_Parse_Error && (
-                    e.message === "Unexpected token: operator (" + data.operator + ")" ||
-                    (e.message === "Unterminated regular expression" && data.operator[0] === "/") ||
-                    (e.message === "Unexpected token: punc (()" && data.operator === "*")
-                );
-            };
-        };
-
-        var errorMessage = function(data) {
-            return "Expected but didn't get a syntax error while parsing following line:\n" + data.code;
-        };
-
-        var tests = generator();
-        for (var i = 0; i < tests.length; i++) {
-            var test = tests[i];
-            assert.throws(testCase(test), fail(test), errorMessage(test));
-        }
-    });
-    it("Should be able to use shorthand properties", function() {
-        var ast = Uglify.parse("var foo = 123\nvar obj = {foo: foo}");
-        assert.strictEqual(ast.print_to_string({ecma: 6}), "var foo=123;var obj={foo};");
-    })
-});

test/mocha/template-string.js

@@ -1,42 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Template string", function() {
-    it("Should not accept invalid sequences", function() {
-        var tests = [
-            // Stress invalid expression
-            "var foo = `Hello ${]}`",
-            "var foo = `Test 123 ${>}`",
-            "var foo = `Blah ${;}`",
-
-            // Stress invalid template_substitution after expression
-            "var foo = `Blablabla ${123 456}`",
-            "var foo = `Blub ${123;}`",
-            "var foo = `Bleh ${a b}`"
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        };
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && /^Unexpected token: /.test(e.message);
-        };
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail, tests[i]);
-        }
-    });
-    it("Should process all line terminators as LF", function() {
-        [
-            "`a\rb`",
-            "`a\nb`",
-            "`a\r\nb`",
-        ].forEach(function(code) {
-            assert.strictEqual(uglify.parse(code).print_to_string(), "`a\\nb`;");
-        });
-    });
-});

test/mocha/try.js

@@ -1,22 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Try", function() {
-    it("Should not allow catch with an empty parameter", function() {
-        var tests = [
-            "try {} catch() {}"
-        ];
-
-        var test = function(code) {
-            return function () {
-                uglify.parse(code);
-            }
-        }
-        var error = function (e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-});

test/mocha/unicode.js

@@ -1,145 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Unicode", function() {
-    it("Should not accept invalid code ranges in unicode escape", function() {
-        var tests = [
-            "\\u{110000}", // A bit over the unicode range
-            "\\u{100000061} = 'foo'", // 32-bit overflow resulting in "a"
-            "\\u{fffffffffff}", // A bit too much over the unicode range
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "Unicode reference out of bounce";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail);
-        }
-    });
-
-    it("Should not accept invalid unicode sequences", function() {
-        var tests = [
-            "var foo = '\\u-111'",
-            "var bar = '\\u{-1}'",
-            "var baz = '\\ugggg'"
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "Invalid hex-character pattern in string";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail);
-        }
-    });
-
-    it("Should throw error if escaped first identifier char is not part of ID_start", function() {
-        var tests = [
-            'var \\u{0} = "foo";',
-            'var \\u{10ffff} = "bar";',
-            'var \\u000a = "what\'s up";',
-             // Valid ID_Start, but using up 2 escaped characters and not fitting in IdentifierStart
-            'var \\ud800\\udc00 = "Hello";',
-            'var \\udbff\\udfff = "Unicode";', // Same as previous test
-            'var \\ud800\udc01 = "Weird unicode";', // Same as above, but mixed escaped with unicode chars
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "First identifier char is an invalid identifier char";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail);
-        }
-    });
-
-    it("Should throw error if escaped non-first identifier char is not part of ID_start", function() {
-        var tests = [
-            'var a\\u{0} = "foo";',
-            'var a\\u{10ffff} = "bar";',
-            'var z\\u000a = "what\'s up";'
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "Invalid escaped identifier char";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail);
-        }
-    });
-
-    it("Should throw error if identifier is a keyword with a escape sequences", function() {
-        var tests = [
-            'var \\u0069\\u006e = "foo"',        // in
-            'var \\u0076\\u0061\\u0072 = "bar"', // var
-            'var \\u{66}\\u{6f}\\u{72} = "baz"', // for
-            'var \\u0069\\u{66} = "foobar"',     // if
-            'var \\u{73}uper'                    // super
-        ];
-
-        var exec = function(test) {
-            return function() {
-                uglify.parse(test);
-            }
-        }
-
-        var fail = function(e) {
-            return e instanceof uglify.JS_Parse_Error
-                && e.message === "Escaped characters are not allowed in keywords";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(exec(tests[i]), fail);
-        }
-    });
-
-    it("Should read strings containing surigates correctly", function() {
-        var tests = [
-            ['var a = "\ud800\udc00";', 'var a="\\u{10000}";'],
-            ['var b = "\udbff\udfff";', 'var b="\\u{10ffff}";']
-        ];
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.strictEqual(uglify.minify(tests[i][0], {
-                output: { ascii_only: true, ecma: 6 }
-            }).code, tests[i][1]);
-        }
-    });
-
-    it("Should parse raw characters correctly", function() {
-        var ast = uglify.parse('console.log("\\udbff");');
-        assert.strictEqual(ast.print_to_string(), 'console.log("\udbff");');
-        ast = uglify.parse(ast.print_to_string());
-        assert.strictEqual(ast.print_to_string(), 'console.log("\udbff");');
-    });
-});

test/mocha/yield.js

@@ -1,105 +0,0 @@
-var UglifyJS = require("../node");
-var assert = require("assert");
-
-describe("Yield", function() {
-    it("Should not delete statements after yield", function() {
-        var js = 'function *foo(bar) { yield 1; yield 2; return 3; }';
-        var result = UglifyJS.minify(js);
-        assert.strictEqual(result.code, 'function*foo(e){return yield 1,yield 2,3}');
-    });
-
-    it("Should not allow yield as labelIdentifier within generators", function() {
-        var js = "function* g() {yield: 1}"
-        var test = function() {
-            UglifyJS.parse(js);
-        }
-        var expect = function(e) {
-            return e instanceof UglifyJS.JS_Parse_Error &&
-                e.message === "Yield cannot be used as label inside generators";
-        }
-        assert.throws(test, expect);
-    });
-
-    it("Should not allow yield* followed by a semicolon in generators", function() {
-        var js = "function* test() {yield*\n;}";
-        var test = function() {
-            UglifyJS.parse(js);
-        }
-        var expect = function(e) {
-            return e instanceof UglifyJS.JS_Parse_Error &&
-                e.message === "Unexpected token: punc (;)";
-        }
-        assert.throws(test, expect);
-    });
-
-    it("Should not allow yield with next token star on next line", function() {
-        var js = "function* test() {yield\n*123;}";
-        var test = function() {
-            UglifyJS.parse(js);
-        }
-        var expect = function(e) {
-            return e instanceof UglifyJS.JS_Parse_Error &&
-                e.message === "Unexpected token: operator (*)";
-        }
-        assert.throws(test, expect);
-    });
-
-    it("Should be able to compress its expression", function() {
-        assert.strictEqual(
-            UglifyJS.minify("function *f() { yield 3-4; }", {compress: true}).code,
-            "function*f(){yield-1}"
-        );
-    });
-
-    it("Should keep undefined after yield without compression if found in ast", function() {
-        assert.strictEqual(
-            UglifyJS.minify("function *f() { yield undefined; yield; yield* undefined; yield void 0}", {compress: false}).code,
-            "function*f(){yield undefined;yield;yield*undefined;yield void 0}"
-        );
-    });
-
-    it("Should be able to drop undefined after yield if necessary with compression", function() {
-        assert.strictEqual(
-            UglifyJS.minify("function *f() { yield undefined; yield; yield* undefined; yield void 0}", {compress: true}).code,
-            "function*f(){yield,yield,yield*void 0,yield}"
-        );
-    });
-
-    it("Should not allow yield to be used as symbol, identifier or shorthand property outside generators in strict mode", function() {
-        var tests = [
-            // Fail in as_symbol
-            '"use strict"; import yield from "bar";',
-            '"use strict"; yield = 123;',
-            '"use strict"; yield: "123";',
-            '"use strict"; for(;;){break yield;}',
-            '"use strict"; for(;;){continue yield;}',
-            '"use strict"; function yield(){}',
-            '"use strict"; function foo(...yield){}',
-            '"use strict"; try { new Error("")} catch (yield) {}',
-            '"use strict"; var yield = "foo";',
-            '"use strict"; class yield {}',
-
-            // Fail in maybe_assign
-            '"use strict"; var foo = yield;',
-            '"use strict"; var foo = bar = yield',
-
-            // Fail in as_property_name
-            '"use strict"; var foo = {yield};',
-        ];
-
-        var fail = function(e) {
-            return e instanceof UglifyJS.JS_Parse_Error &&
-                /^Unexpected yield identifier (?:as parameter )?inside strict mode/.test(e.message);
-        }
-
-        var test = function(input) {
-            return function() {
-                UglifyJS.parse(input);
-            }
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), fail, tests[i]);
-        }
-    });
-});