v3.3.5

- use public API
- fix issue with Node.js 0.10 on WIndows

README.md

@@ -640,7 +640,13 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
 
 - `if_return` (default: `true`) -- optimizations for if/return and if/continue
 
-- `inline` (default: `true`) -- embed simple functions
+- `inline` (default: `true`) -- inline calls to function with simple/`return` statement:
+  - `false` -- same as `0`
+  - `0` -- disabled inlining
+  - `1` -- inline simple functions
+  - `2` -- inline functions with arguments
+  - `3` -- inline functions with arguments and variables
+  - `true` -- same as `3`
 
 - `join_vars` (default: `true`) -- join consecutive `var` statements
 

appveyor.yml

@@ -1,24 +1,20 @@
 environment:
   matrix:
-  - nodejs_version: "0.10"
+    - nodejs_version: "0.10"
-  - nodejs_version: "0.12"
+    - nodejs_version: "0.12"
-  - nodejs_version: "4.0"
+    - nodejs_version: "4"
-  - nodejs_version: "6.0"
+    - nodejs_version: "6"
-
+    - nodejs_version: "8"
+install:
+  - ps: Install-Product node $env:nodejs_version
+  - set UGLIFYJS_TEST_ALL=1
+  - npm install
+build: off
+cache:
+  - tmp
 matrix:
   fast_finish: true
-
-platform:
-  - x86
-  - x64
-
-install:
-  - ps: Install-Product node $env:nodejs_version $env:platform
-  - npm install
-
 test_script:
   - node --version
   - npm --version
   - npm test
-
-build: off

bin/uglifyjs

@@ -3,11 +3,7 @@
 
 "use strict";
 
-// workaround for tty output truncation upon process.exit()
+require("../tools/exit");
-[process.stdout, process.stderr].forEach(function(stream){
-    if (stream._handle && stream._handle.setBlocking)
-        stream._handle.setBlocking(true);
-});
 
 var fs = require("fs");
 var info = require("../package.json");

lib/minify.js

@@ -29,7 +29,6 @@ function set_shorthand(name, options, keys) {
 
 function init_cache(cache) {
     if (!cache) return;
-    if (!("cname" in cache)) cache.cname = -1;
     if (!("props" in cache)) {
         cache.props = new Dictionary();
     } else if (!(cache.props instanceof Dictionary)) {
@@ -39,7 +38,6 @@ function init_cache(cache) {
 
 function to_json(cache) {
     return {
-        cname: cache.cname,
         props: cache.props.toObject()
     };
 }

lib/output.js

@@ -534,7 +534,11 @@ function OutputStream(options) {
         var token = node.end;
         if (!token) return;
         var comments = token[tail ? "comments_before" : "comments_after"];
-        if (comments && comments._dumped !== self) {
+        if (comments
+            && comments._dumped !== self
+            && (node instanceof AST_Statement || all(comments, function(c) {
+                return !/comment[134]/.test(c.type);
+            }))) {
             comments._dumped = self;
             var insert = OUTPUT.length;
             comments.filter(comment_filter, node).forEach(function(c, i) {
@@ -599,7 +603,7 @@ function OutputStream(options) {
         add_mapping     : add_mapping,
         option          : function(opt) { return options[opt] },
         prepend_comments: readonly ? noop : prepend_comments,
-        append_comments : readonly ? noop : append_comments,
+        append_comments : readonly || comment_filter === return_false ? noop : append_comments,
         line            : function() { return current_line },
         col             : function() { return current_col },
         pos             : function() { return current_pos },
@@ -671,9 +675,7 @@ function OutputStream(options) {
         }
     };
 
-    PARENS(AST_Node, function(){
+    PARENS(AST_Node, return_false);
-        return false;
-    });
 
     // a function expression needs parens around it when it's provably
     // the first token to appear in a statement.
@@ -699,9 +701,7 @@ function OutputStream(options) {
 
     // same goes for an object literal, because otherwise it would be
     // interpreted as a block of code.
-    PARENS(AST_Object, function(output){
+    PARENS(AST_Object, first_in_statement);
-        return first_in_statement(output);
-    });
 
     PARENS(AST_Unary, function(output){
         var p = output.parent();

lib/parse.js

@@ -774,10 +774,15 @@ function parse($TEXT, options) {
 
     function expect(punc) { return expect_token("punc", punc); };
 
+    function has_newline_before(token) {
+        return token.nlb || !all(token.comments_before, function(comment) {
+            return !comment.nlb;
+        });
+    }
+
     function can_insert_semicolon() {
-        return !options.strict && (
+        return !options.strict
-            S.token.nlb || is("eof") || is("punc", "}")
+            && (is("eof") || is("punc", "}") || has_newline_before(S.token));
-        );
     };
 
     function semicolon(optional) {
@@ -795,7 +800,7 @@ function parse($TEXT, options) {
     function embed_tokens(parser) {
         return function() {
             var start = S.token;
-            var expr = parser();
+            var expr = parser.apply(null, arguments);
             var end = prev();
             expr.start = start;
             expr.end = end;
@@ -810,17 +815,17 @@ function parse($TEXT, options) {
         }
     };
 
-    var statement = embed_tokens(function() {
+    var statement = embed_tokens(function(strict_defun) {
         handle_regexp();
         switch (S.token.type) {
           case "string":
             if (S.in_directives) {
                 var token = peek();
                 if (S.token.raw.indexOf("\\") == -1
-                    && (token.nlb
+                    && (is_token(token, "punc", ";")
-                        || is_token(token, "eof")
+                        || is_token(token, "punc", "}")
-                        || is_token(token, "punc", ";")
+                        || has_newline_before(token)
-                        || is_token(token, "punc", "}"))) {
+                        || is_token(token, "eof"))) {
                     S.input.add_directive(S.token.value);
                 } else {
                     S.in_directives = false;
@@ -896,6 +901,9 @@ function parse($TEXT, options) {
                 return for_();
 
               case "function":
+                if (!strict_defun && S.input.has_directive("use strict")) {
+                    croak("In strict mode code, functions can only be declared at top level or immediately within another function.");
+                }
                 next();
                 return function_(AST_Defun);
 
@@ -927,7 +935,7 @@ function parse($TEXT, options) {
 
               case "throw":
                 next();
-                if (S.token.nlb)
+                if (has_newline_before(S.token))
                     croak("Illegal newline after 'throw'");
                 var value = expression(true);
                 semicolon();
@@ -1078,7 +1086,7 @@ function parse($TEXT, options) {
         S.input.push_directives_stack();
         S.in_loop = 0;
         S.labels = [];
-        var body = block_();
+        var body = block_(true);
         if (S.input.has_directive("use strict")) {
             if (name) strict_verify_symbol(name);
             argnames.forEach(strict_verify_symbol);
@@ -1107,12 +1115,12 @@ function parse($TEXT, options) {
         });
     };
 
-    function block_() {
+    function block_(strict_defun) {
         expect("{");
         var a = [];
         while (!is("punc", "}")) {
             if (is("eof")) unexpected();
-            a.push(statement());
+            a.push(statement(strict_defun));
         }
         next();
         return a;
@@ -1220,12 +1228,14 @@ function parse($TEXT, options) {
         } else {
             args = [];
         }
-        return subscripts(new AST_New({
+        var call = new AST_New({
             start      : start,
             expression : newexp,
             args       : args,
             end        : prev()
-        }), allow_calls);
+        });
+        mark_pure(call);
+        return subscripts(call, allow_calls);
     };
 
     function as_atom_node() {
@@ -1503,7 +1513,7 @@ function parse($TEXT, options) {
             return ex;
         }
         var val = expr_atom(allow_calls);
-        while (is("operator") && UNARY_POSTFIX(S.token.value) && !S.token.nlb) {
+        while (is("operator") && UNARY_POSTFIX(S.token.value) && !has_newline_before(S.token)) {
             val = make_unary(AST_UnaryPostfix, S.token, val);
             val.start = start;
             val.end = S.token;
@@ -1623,7 +1633,7 @@ function parse($TEXT, options) {
         var body = [];
         S.input.push_directives_stack();
         while (!is("eof"))
-            body.push(statement());
+            body.push(statement(true));
         S.input.pop_directives_stack();
         var end = prev();
         var toplevel = options.toplevel;

lib/propmangle.js

@@ -110,12 +110,15 @@ function mangle_properties(ast, options) {
     if (!Array.isArray(reserved)) reserved = [];
     if (!options.builtins) find_builtins(reserved);
 
-    var cache = options.cache;
+    var cname = -1;
-    if (cache == null) {
+    var cache;
-        cache = {
+    if (options.cache) {
-            cname: -1,
+        cache = options.cache.props;
-            props: new Dictionary()
+        cache.each(function(mangled_name) {
-        };
+            push_uniq(reserved, mangled_name);
+        });
+    } else {
+        cache = new Dictionary();
     }
 
     var regex = options.regex;
@@ -172,7 +175,7 @@ function mangle_properties(ast, options) {
         if (unmangleable.indexOf(name) >= 0) return false;
         if (reserved.indexOf(name) >= 0) return false;
         if (options.only_cache) {
-            return cache.props.has(name);
+            return cache.has(name);
         }
         if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false;
         return true;
@@ -181,7 +184,7 @@ function mangle_properties(ast, options) {
     function should_mangle(name) {
         if (regex && !regex.test(name)) return false;
         if (reserved.indexOf(name) >= 0) return false;
-        return cache.props.has(name)
+        return cache.has(name)
             || names_to_mangle.indexOf(name) >= 0;
     }
 
@@ -199,7 +202,7 @@ function mangle_properties(ast, options) {
             return name;
         }
 
-        var mangled = cache.props.get(name);
+        var mangled = cache.get(name);
         if (!mangled) {
             if (debug) {
                 // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_.
@@ -213,11 +216,11 @@ function mangle_properties(ast, options) {
             // either debug mode is off, or it is on and we could not use the mangled name
             if (!mangled) {
                 do {
-                    mangled = base54(++cache.cname);
+                    mangled = base54(++cname);
                 } while (!can_mangle(mangled));
             }
 
-            cache.props.set(name, mangled);
+            cache.set(name, mangled);
         }
         return mangled;
     }

lib/scope.js

@@ -43,9 +43,10 @@
 
 "use strict";
 
-function SymbolDef(scope, orig) {
+function SymbolDef(scope, orig, init) {
     this.name = orig.name;
     this.orig = [ orig ];
+    this.init = init;
     this.eliminated = 0;
     this.scope = scope;
     this.references = [];
@@ -150,7 +151,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             node.references = [];
         }
         if (node instanceof AST_SymbolLambda) {
-            defun.def_function(node);
+            defun.def_function(node, node.name == "arguments" ? undefined : defun);
         }
         else if (node instanceof AST_SymbolDefun) {
             // Careful here, the scope where this should be defined is
@@ -158,10 +159,10 @@ 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.
-            (node.scope = defun.parent_scope).def_function(node);
+            (node.scope = defun.parent_scope).def_function(node, defun);
         }
         else if (node instanceof AST_SymbolVar) {
-            defun.def_variable(node);
+            defun.def_variable(node, node.TYPE == "SymbolVar" ? null : undefined);
             if (defun !== scope) {
                 node.mark_enclosed(options);
                 var def = scope.find_variable(node);
@@ -241,10 +242,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             }
         }));
     }
-
-    if (options.cache) {
-        this.cname = options.cache.cname;
-    }
 });
 
 AST_Toplevel.DEFMETHOD("def_global", function(node){
@@ -306,27 +303,32 @@ AST_Scope.DEFMETHOD("find_variable", function(name){
         || (this.parent_scope && this.parent_scope.find_variable(name));
 });
 
-AST_Scope.DEFMETHOD("def_function", function(symbol){
+AST_Scope.DEFMETHOD("def_function", function(symbol, init){
-    this.functions.set(symbol.name, this.def_variable(symbol));
+    var def = this.def_variable(symbol, init);
+    if (!def.init) def.init = init;
+    this.functions.set(symbol.name, def);
+    return def;
 });
 
-AST_Scope.DEFMETHOD("def_variable", function(symbol){
+AST_Scope.DEFMETHOD("def_variable", function(symbol, init){
-    var def;
+    var def = this.variables.get(symbol.name);
-    if (!this.variables.has(symbol.name)) {
+    if (def) {
-        def = new SymbolDef(this, symbol);
+        def.orig.push(symbol);
+        if (def.init && (def.scope !== symbol.scope || def.init instanceof AST_Function)) {
+            def.init = init;
+        }
+    } else {
+        def = new SymbolDef(this, symbol, init);
         this.variables.set(symbol.name, def);
         def.global = !this.parent_scope;
-    } else {
-        def = this.variables.get(symbol.name);
-        def.orig.push(symbol);
     }
     return symbol.thedef = def;
 });
 
-AST_Scope.DEFMETHOD("next_mangled", function(options){
+function next_mangled(scope, options) {
-    var ext = this.enclosed;
+    var ext = scope.enclosed;
     out: while (true) {
-        var m = base54(++this.cname);
+        var m = base54(++scope.cname);
         if (!is_identifier(m)) continue; // skip over "do"
 
         // https://github.com/mishoo/UglifyJS2/issues/242 -- do not
@@ -343,6 +345,18 @@ AST_Scope.DEFMETHOD("next_mangled", function(options){
         }
         return m;
     }
+}
+
+AST_Scope.DEFMETHOD("next_mangled", function(options){
+    return next_mangled(this, options);
+});
+
+AST_Toplevel.DEFMETHOD("next_mangled", function(options){
+    var name;
+    do {
+        name = next_mangled(this, options);
+    } while (member(name, this.mangled_names));
+    return name;
 });
 
 AST_Function.DEFMETHOD("next_mangled", function(options, def){
@@ -356,7 +370,7 @@ AST_Function.DEFMETHOD("next_mangled", function(options, def){
     var tricky_name = tricky_def ? tricky_def.mangled_name || tricky_def.name : null;
 
     while (true) {
-        var name = AST_Lambda.prototype.next_mangled.call(this, options, def);
+        var name = next_mangled(this, options);
         if (!tricky_name || tricky_name != name)
             return name;
     }
@@ -407,8 +421,14 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
     var lname = -1;
     var to_mangle = [];
 
+    var mangled_names = this.mangled_names = [];
     if (options.cache) {
         this.globals.each(collect);
+        if (options.cache.props) {
+            options.cache.props.each(function(mangled_name) {
+                push_uniq(mangled_names, mangled_name);
+            });
+        }
     }
 
     var tw = new TreeWalker(function(node, descend){
@@ -437,10 +457,6 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
     this.walk(tw);
     to_mangle.forEach(function(def){ def.mangle(options) });
 
-    if (options.cache) {
-        options.cache.cname = this.cname;
-    }
-
     function collect(symbol) {
         if (!member(symbol.name, options.reserved)) {
             to_mangle.push(symbol);

package.json

@@ -4,7 +4,7 @@
   "homepage": "http://lisperator.net/uglifyjs",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.3.0",
+  "version": "3.3.5",
   "engines": {
     "node": ">=0.8.0"
   },

test/benchmark.js

@@ -21,6 +21,7 @@ var urls = [
     "http://builds.emberjs.com/tags/v2.11.0/ember.prod.js",
     "https://cdn.jsdelivr.net/lodash/4.17.4/lodash.js",
     "https://cdnjs.cloudflare.com/ajax/libs/d3/4.5.0/d3.js",
+    "https://raw.githubusercontent.com/kangax/html-minifier/v3.5.7/dist/htmlminifier.js",
 ];
 var results = {};
 var remaining = 2 * urls.length;

test/compress/collapse_vars.js

@@ -3878,10 +3878,9 @@ recursive_function_replacement: {
         console.log(f(c));
     }
     expect: {
-        function f(n) {
+        console.log(function n(o) {
-            return x(y(f(n)));
+            return x(y(n(o)));
-        }
+        }(c));
-        console.log(f(c));
     }
 }
 

test/compress/conditionals.js

@@ -1203,3 +1203,24 @@ issue_2560: {
         "2",
     ]
 }
+
+hoist_decl: {
+    options = {
+        conditionals: true,
+        join_vars: true,
+        sequences: true,
+    }
+    input: {
+        if (x()) {
+            var a;
+            y();
+        } else {
+            z();
+            var b;
+        }
+    }
+    expect: {
+        var a, b;
+        x() ? y() : z();
+    }
+}

test/compress/dead-code.js

@@ -62,46 +62,6 @@ dead_code_2_should_warn: {
     node_version: "<=4"
 }
 
-dead_code_2_should_warn_strict: {
-    options = {
-        dead_code: true
-    };
-    input: {
-        "use strict";
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            // completely discarding the `if` would introduce some
-            // bugs.  UglifyJS v1 doesn't deal with this issue; in v2
-            // we copy any declarations to the upper scope.
-            if (x) {
-                y();
-                var x;
-                function g(){};
-                // but nested declarations should not be kept.
-                (function(){
-                    var q;
-                    function y(){};
-                })();
-            }
-        }
-        f();
-    }
-    expect: {
-        "use strict";
-        function f() {
-            g();
-            x = 10;
-            throw new Error("foo");
-            var x;
-        }
-        f();
-    }
-    expect_stdout: true
-    node_version: ">=4"
-}
-
 dead_code_constant_boolean_should_warn_more: {
     options = {
         dead_code    : true,
@@ -137,42 +97,6 @@ dead_code_constant_boolean_should_warn_more: {
     node_version: "<=4"
 }
 
-dead_code_constant_boolean_should_warn_more_strict: {
-    options = {
-        dead_code    : true,
-        loops        : true,
-        booleans     : true,
-        conditionals : true,
-        evaluate     : true,
-        side_effects : true,
-    };
-    input: {
-        "use strict";
-        while (!((foo && bar) || (x + "0"))) {
-            console.log("unreachable");
-            var foo;
-            function bar() {}
-        }
-        for (var x = 10, y; x && (y || x) && (!typeof x); ++x) {
-            asdf();
-            foo();
-            var moo;
-        }
-        bar();
-    }
-    expect: {
-        "use strict";
-        var foo;
-        // nothing for the while
-        // as for the for, it should keep:
-        var moo;
-        var x = 10, y;
-        bar();
-    }
-    expect_stdout: true
-    node_version: ">=4"
-}
-
 try_catch_finally: {
     options = {
         conditionals: true,
@@ -828,3 +752,84 @@ issue_2597: {
     }
     expect_stdout: "PASS"
 }
+
+issue_2666: {
+    options = {
+        dead_code: true,
+    }
+    input: {
+        function f(a) {
+            return a = {
+                p: function() {
+                    return a;
+                }
+            };
+        }
+        console.log(typeof f().p());
+    }
+    expect: {
+        function f(a) {
+            return a = {
+                p: function() {
+                    return a;
+                }
+            };
+        }
+        console.log(typeof f().p());
+    }
+    expect_stdout: "object"
+}
+
+issue_2692: {
+    options = {
+        dead_code: true,
+        reduce_vars: false,
+    }
+    input: {
+        function f(a) {
+            return a = g;
+            function g() {
+                return a;
+            }
+        }
+        console.log(typeof f()());
+    }
+    expect: {
+        function f(a) {
+            return a = g;
+            function g() {
+                return a;
+            }
+        }
+        console.log(typeof f()());
+    }
+    expect_stdout: "function"
+}
+
+issue_2701: {
+    options = {
+        dead_code: true,
+        inline: false,
+    }
+    input: {
+        function f(a) {
+            return a = function() {
+                return function() {
+                    return a;
+                };
+            }();
+        }
+        console.log(typeof f()());
+    }
+    expect: {
+        function f(a) {
+            return a = function() {
+                return function() {
+                    return a;
+                };
+            }();
+        }
+        console.log(typeof f()());
+    }
+    expect_stdout: "function"
+}

test/compress/drop-unused.js

@@ -1413,3 +1413,234 @@ issue_2516_2: {
         Baz(2);
     }
 }
+
+defun_lambda_same_name: {
+    options = {
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }
+        console.log(function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }(5));
+    }
+    expect: {
+        console.log(function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }(5));
+    }
+    expect_stdout: "120"
+}
+
+issue_2660_1: {
+    options = {
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = 2;
+        function f(b) {
+            return b && f() || a--;
+        }
+        f(1);
+        console.log(a);
+    }
+    expect: {
+        var a = 2;
+        (function f(b) {
+            return b && f() || a--;
+        })(1);
+        console.log(a);
+    }
+    expect_stdout: "1"
+}
+
+issue_2660_2: {
+    options = {
+        collapse_vars: true,
+        reduce_vars: true,
+        sequences: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = 1;
+        function f(b) {
+            b && f();
+            --a, a.toString();
+        }
+        f();
+        console.log(a);
+    }
+    expect: {
+        var a = 1;
+        (function f(b) {
+            b && f(),
+            (--a).toString();
+        })(),
+        console.log(a);
+    }
+    expect_stdout: "0"
+}
+
+issue_2665: {
+    options = {
+        evaluate: true,
+        inline: true,
+        keep_fargs: false,
+        passes: 2,
+        reduce_funcs: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        typeofs: true,
+        unused: true,
+    }
+    input: {
+        var a = 1;
+        function g() {
+            a-- && g();
+        }
+        typeof h == "function" && h();
+        function h() {
+            typeof g == "function" && g();
+        }
+        console.log(a);
+    }
+    expect: {
+        var a = 1;
+        !function g() {
+            a-- && g();
+        }();
+        console.log(a);
+    }
+    expect_stdout: "-1"
+}
+
+double_assign_1: {
+    options = {
+        passes: 2,
+        reduce_vars: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        function f1() {
+            var a = {};
+            var a = [];
+            return a;
+        }
+        function f2() {
+            var a = {};
+            a = [];
+            return a;
+        }
+        function f3() {
+            a = {};
+            var a = [];
+            return a;
+        }
+        function f4(a) {
+            a = {};
+            a = [];
+            return a;
+        }
+        function f5(a) {
+            var a = {};
+            a = [];
+            return a;
+        }
+        function f6(a) {
+            a = {};
+            var a = [];
+            return a;
+        }
+        console.log(f1(), f2(), f3(), f4(), f5(), f6());
+    }
+    expect: {
+        function f1() {
+            return [];
+        }
+        function f2() {
+            var a;
+            a = [];
+            return a;
+        }
+        function f3() {
+            return [];
+        }
+        function f4(a) {
+            a = [];
+            return a;
+        }
+        function f5(a) {
+            a = [];
+            return a;
+        }
+        function f6(a) {
+            a = [];
+            return a;
+        }
+        console.log(f1(), f2(), f3(), f4(), f5(), f6());
+    }
+    expect_stdout: true
+}
+
+double_assign_2: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        for (var i = 0; i < 2; i++)
+            a = void 0, a = {}, console.log(a);
+        var a;
+    }
+    expect: {
+        for (var i = 0; i < 2; i++)
+            void 0, a = {}, console.log(a);
+        var a;
+    }
+}
+
+double_assign_3: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        for (var i = 0; i < 2; i++)
+            a = void 0, a = { a: a }, console.log(a);
+        var a;
+    }
+    expect: {
+        for (var i = 0; i < 2; i++)
+            a = void 0, a = { a: a }, console.log(a);
+        var a;
+    }
+}
+
+cascade_drop_assign: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a, b = a = "PASS";
+        console.log(b);
+    }
+    expect: {
+        var b = "PASS";
+        console.log(b);
+    }
+    expect_stdout: "PASS"
+}

test/compress/functions.js

@@ -214,46 +214,6 @@ hoist_funs: {
     node_version: "<=4"
 }
 
-hoist_funs_strict: {
-    options = {
-        hoist_funs: true,
-    }
-    input: {
-        "use strict";
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            function f() {}
-            console.log(5, typeof f, typeof g);
-        }
-        function g() {}
-        console.log(6, typeof f, typeof g);
-    }
-    expect: {
-        "use strict";
-        function g() {}
-        console.log(1, typeof f, typeof g);
-        if (console.log(2, typeof f, typeof g))
-            console.log(3, typeof f, typeof g);
-        else {
-            console.log(4, typeof f, typeof g);
-            function f() {}
-            console.log(5, typeof f, typeof g);
-        }
-        console.log(6, typeof f, typeof g);
-    }
-    expect_stdout: [
-        "1 'undefined' 'function'",
-        "2 'undefined' 'function'",
-        "4 'function' 'function'",
-        "5 'function' 'function'",
-        "6 'undefined' 'function'",
-    ]
-    node_version: ">=4"
-}
-
 issue_203: {
     options = {
         keep_fargs: false,
@@ -800,12 +760,12 @@ issue_2601_1: {
     expect: {
         var a = "FAIL";
         (function() {
+            var b;
             b = "foo",
             function(b) {
                 b && b();
             }(),
             b && (a = "PASS");
-            var b;
         })(),
         console.log(a);
     }
@@ -1285,7 +1245,7 @@ issue_2630_1: {
     expect: {
         var c = 0;
         (function() {
-            while (c++, void (c = 1 + c));
+            while (void (c = 1 + ++c));
         })(),
         console.log(c);
     }
@@ -1299,6 +1259,7 @@ issue_2630_2: {
         passes: 2,
         reduce_vars: true,
         sequences: true,
+        side_effects: true,
         unused: true,
     }
     input: {
@@ -1316,7 +1277,7 @@ issue_2630_2: {
     expect: {
         var c = 0;
         !function() {
-            while (c += 1, void (c = 1 + c));
+            while (void (c = 1 + (c += 1)));
         }(), console.log(c);
     }
     expect_stdout: "2"
@@ -1345,11 +1306,10 @@ issue_2630_3: {
     expect: {
         var x = 2, a = 1;
         (function() {
-            function f1(a) {
+            (function f1(a) {
                 f2();
                 --x >= 0 && f1({});
-            }
+            })(a++);
-            f1(a++);
             function f2() {
                 a++;
             }
@@ -1417,9 +1377,577 @@ issue_2630_5: {
         !function() {
             do {
                 c *= 10;
-            } while (c += 3, (c = 2 + c) < 100);
+            } while ((c = 2 + (c += 3)) < 100);
         }();
         console.log(c);
     }
     expect_stdout: "155"
 }
+
+recursive_inline_1: {
+    options = {
+        inline: true,
+        reduce_funcs: true,
+        reduce_vars: true,
+        sequences: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            h();
+        }
+        function g(a) {
+            a();
+        }
+        function h(b) {
+            g();
+            if (b) x();
+        }
+    }
+    expect: {}
+}
+
+recursive_inline_2: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }
+        console.log(f(5));
+    }
+    expect: {
+        console.log(function f(n) {
+            return n ? n * f(n - 1) : 1;
+        }(5));
+    }
+    expect_stdout: "120"
+}
+
+issue_2657: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        sequences: true,
+        unused: true,
+    }
+    input: {
+        "use strict";
+        console.log(function f() {
+            return h;
+            function g(b) {
+                return b || b();
+            }
+            function h(a) {
+                g(a);
+                return a;
+            }
+        }()(42));
+    }
+    expect: {
+        "use strict";
+        console.log(function(a) {
+            return b = a, b || b(), a;
+            var b;
+        }(42));
+    }
+    expect_stdout: "42"
+}
+
+issue_2663_1: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function() {
+            var i, o = {};
+            function createFn(j) {
+                return function() {
+                    console.log(j);
+                };
+            }
+            for (i in { a: 1, b: 2, c: 3 })
+                o[i] = createFn(i);
+            for (i in o)
+                o[i]();
+        })();
+    }
+    expect: {
+        (function() {
+            var i, o = {};
+            function createFn(j) {
+                return function() {
+                    console.log(j);
+                };
+            }
+            for (i in { a: 1, b: 2, c: 3 })
+                o[i] = createFn(i);
+            for (i in o)
+                o[i]();
+        })();
+    }
+    expect_stdout: [
+        "a",
+        "b",
+        "c",
+    ]
+}
+
+issue_2663_2: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        (function() {
+            var i;
+            function fn(j) {
+                return function() {
+                    console.log(j);
+                }();
+            }
+            for (i in { a: 1, b: 2, c: 3 })
+                fn(i);
+        })();
+    }
+    expect: {
+        (function() {
+            var i;
+            for (i in { a: 1, b: 2, c: 3 })
+                j = i, console.log(j);
+            var j;
+        })();
+    }
+    expect_stdout: [
+        "a",
+        "b",
+        "c",
+    ]
+}
+
+issue_2663_3: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function () {
+            var outputs = [
+                { type: 0, target: null, eventName: "ngSubmit", propName: null },
+                { type: 0, target: null, eventName: "submit", propName: null },
+                { type: 0, target: null, eventName: "reset", propName: null },
+            ];
+            function listenToElementOutputs(outputs) {
+                var handlers = [];
+                for (var i = 0; i < outputs.length; i++) {
+                    var output = outputs[i];
+                    var handleEventClosure = renderEventHandlerClosure(output.eventName);
+                    handlers.push(handleEventClosure)
+                }
+                var target, name;
+                return handlers;
+            }
+            function renderEventHandlerClosure(eventName) {
+                return function () {
+                    return console.log(eventName);
+                };
+            }
+            listenToElementOutputs(outputs).forEach(function (handler) {
+                return handler()
+            });
+        })();
+    }
+    expect: {
+        (function() {
+            function renderEventHandlerClosure(eventName) {
+                return function() {
+                    return console.log(eventName);
+                };
+            }
+            (function(outputs) {
+                var handlers = [];
+                for (var i = 0; i < outputs.length; i++) {
+                    var output = outputs[i];
+                    var handleEventClosure = renderEventHandlerClosure(output.eventName);
+                    handlers.push(handleEventClosure);
+                }
+                return handlers;
+            })([ {
+                type: 0,
+                target: null,
+                eventName: "ngSubmit",
+                propName: null
+            }, {
+                type: 0,
+                target: null,
+                eventName: "submit",
+                propName: null
+            }, {
+                type: 0,
+                target: null,
+                eventName: "reset",
+                propName: null
+            } ]).forEach(function(handler) {
+                return handler();
+            });
+        })();
+    }
+    expect_stdout: [
+        "ngSubmit",
+        "submit",
+        "reset",
+    ]
+}
+
+duplicate_argnames: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = "PASS";
+        function f(b, b, b) {
+            b && (a = "FAIL");
+        }
+        f(0, console);
+        console.log(a);
+    }
+    expect: {
+        var a = "PASS";
+        console, b && (a = "FAIL");
+        var b;
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}
+
+loop_init_arg: {
+    options = {
+        inline: true,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        var a = "PASS";
+        for (var k in "12") (function (b) {
+            (b >>= 1) && (a = "FAIL"), b = 2;
+        })();
+        console.log(a);
+    }
+    expect: {
+        var a = "PASS";
+        for (var k in "12")
+            b = void 0, (b >>= 1) && (a = "FAIL"), b = 2;
+        var b;
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}
+
+inline_false: {
+    options = {
+        inline: false,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+inline_0: {
+    options = {
+        inline: 0,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+inline_1: {
+    options = {
+        inline: 1,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        console.log(1);
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+inline_2: {
+    options = {
+        inline: 2,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        console.log(1);
+        a = 2, console.log(a);
+        var a;
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+inline_3: {
+    options = {
+        inline: 3,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        console.log(1);
+        a = 2, console.log(a);
+        var a;
+        b = 3, c = b, console.log(c);
+        var b, c;
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+inline_true: {
+    options = {
+        inline: true,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        (function() {
+            console.log(1);
+        })();
+        (function(a) {
+            console.log(a);
+        })(2);
+        (function(b) {
+            var c = b;
+            console.log(c);
+        })(3);
+    }
+    expect: {
+        console.log(1);
+        a = 2, console.log(a);
+        var a;
+        b = 3, c = b, console.log(c);
+        var b, c;
+    }
+    expect_stdout: [
+        "1",
+        "2",
+        "3",
+    ]
+}
+
+use_before_init_in_loop: {
+    options = {
+        inline: true,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        var a = "PASS";
+        for (var b = 2; --b >= 0;) (function() {
+            var c = function() {
+                return 1;
+            }(c && (a = "FAIL"));
+        })();
+        console.log(a);
+    }
+    expect: {
+        var a = "PASS";
+        for (var b = 2; --b >= 0;)
+            c = void 0, c = (c && (a = "FAIL"), 1);
+        var c;
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}
+
+duplicate_arg_var: {
+    options = {
+        inline: true,
+        toplevel: true,
+    }
+    input: {
+        console.log(function(b) {
+            return b;
+            var b;
+        }("PASS"));
+    }
+    expect: {
+        console.log((b = "PASS", b));
+        var b;
+    }
+    expect_stdout: "PASS"
+}
+
+issue_2737_1: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function(a) {
+            while (a());
+        })(function f() {
+            console.log(typeof f);
+        });
+    }
+    expect: {
+        (function(a) {
+            while (a());
+        })(function f() {
+            console.log(typeof f);
+        });
+    }
+    expect_stdout: "function"
+}
+
+issue_2737_2: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function(bar) {
+            for (;bar(); ) break;
+        })(function qux() {
+            return console.log("PASS"), qux;
+        });
+    }
+    expect: {
+        (function(bar) {
+            for (;bar(); ) break;
+        })(function qux() {
+            return console.log("PASS"), qux;
+        });
+    }
+    expect_stdout: "PASS"
+}

test/compress/if_return.js

@@ -326,3 +326,73 @@ issue_512: {
         }
     }
 }
+
+if_var_return: {
+    options = {
+        conditionals: true,
+        if_return: true,
+        join_vars: true,
+        sequences: true,
+    }
+    input: {
+        function f() {
+            var a;
+            return;
+            var b;
+        }
+        function g() {
+            var a;
+            if (u()) {
+                var b;
+                return v();
+                var c;
+            }
+            var d;
+            if (w()) {
+                var e;
+                return x();
+                var f;
+            } else {
+                var g;
+                y();
+                var h;
+            }
+            var i;
+            z();
+            var j;
+        }
+    }
+    expect: {
+        function f() {
+            var a, b;
+        }
+        function g() {
+            var a, b, c, d, e, f, g, h, i, j;
+            return u() ? v() : w() ? x() : (y(), z(), void 0);
+        }
+    }
+}
+
+if_if_return_return: {
+    options = {
+        conditionals: true,
+        if_return: true,
+    }
+    input: {
+        function f(a, b) {
+            if (a) {
+                if (b)
+                    return b;
+                return;
+            }
+            g();
+        }
+    }
+    expect: {
+        function f(a, b) {
+            if (a)
+                return b || void 0;
+            g();
+        }
+    }
+}

test/compress/issue-2652.js

@@ -0,0 +1,33 @@
+insert_semicolon: {
+    beautify = {
+        beautify: true,
+        comments: "all",
+    }
+    input: {
+        var a
+        /* foo */ var b
+    }
+    expect_exact: [
+        "var a",
+        "/* foo */;",
+        "",
+        "var b;",
+    ]
+}
+
+unary_postfix: {
+    beautify = {
+        beautify: true,
+        comments: "all",
+    }
+    input: {
+        a
+        /* foo */++b
+    }
+    expect_exact: [
+        "a",
+        "/* foo */;",
+        "",
+        "++b;",
+    ]
+}

test/compress/issue-269.js

@@ -64,3 +64,27 @@ strings_concat: {
 		);
 	}
 }
+
+regexp: {
+	options = {
+		evaluate: true,
+		unsafe: true,
+	}
+	input: {
+		RegExp("foo");
+		RegExp("bar", "ig");
+		RegExp(foo);
+		RegExp("bar", ig);
+		RegExp("should", "fail");
+	}
+	expect: {
+		/foo/;
+		/bar/ig;
+		RegExp(foo);
+		RegExp("bar", ig);
+		RegExp("should", "fail");
+	}
+	expect_warnings: [
+		'WARN: Error converting RegExp("should","fail") [test/compress/issue-269.js:78,2]',
+	]
+}

test/compress/issue-2719.js

@@ -0,0 +1,32 @@
+warn: {
+    options = {
+        evaluate: true,
+        inline: true,
+        passes: 2,
+        properties: true,
+        reduce_funcs: true,
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            return g();
+        }
+        function g() {
+            return g["call" + "er"].arguments;
+        }
+        // 3
+        console.log(f(1, 2, 3).length);
+    }
+    expect: {
+        // TypeError: Cannot read property 'arguments' of null
+        console.log(function g() {
+            return g.caller.arguments;
+        }().length);
+    }
+    expect_warnings: [
+        "WARN: Function.protoype.caller not supported [test/compress/issue-2719.js:17,19]",
+        "WARN: Function.protoype.arguments not supported [test/compress/issue-2719.js:17,19]",
+    ]
+}

test/compress/properties.js

@@ -567,12 +567,18 @@ native_prototype: {
     }
     input: {
         Array.prototype.splice.apply(a, [1, 2, b, c]);
+        Function.prototype.call.apply(console.log, console, [ "foo" ]);
+        Number.prototype.toFixed.call(Math.PI, 2);
         Object.prototype.hasOwnProperty.call(d, "foo");
+        RegExp.prototype.test.call(/foo/, "bar");
         String.prototype.indexOf.call(e, "bar");
     }
     expect: {
         [].splice.apply(a, [1, 2, b, c]);
+        (function() {}).call.apply(console.log, console, [ "foo" ]);
+        0..toFixed.call(Math.PI, 2);
         ({}).hasOwnProperty.call(d, "foo");
+        /t/.test.call(/foo/, "bar");
         "".indexOf.call(e, "bar");
     }
 }

test/compress/pure_funcs.js

@@ -414,3 +414,124 @@ issue_2638: {
         "/* */(a()||b())(c(),d());",
     ]
 }
+
+issue_2705_1: {
+    options = {
+        side_effects: true,
+    }
+    beautify = {
+        comments: "all",
+    }
+    input: {
+        /*@__PURE__*/ new a();
+        /*@__PURE__*/ (new b());
+        new (/*@__PURE__*/ c)();
+        (/*@__PURE__*/ new d());
+    }
+    expect_exact: [
+        "new/* */c;",
+    ]
+}
+
+issue_2705_2: {
+    options = {
+        side_effects: true,
+    }
+    beautify = {
+        comments: "all",
+    }
+    input: {
+        /*@__PURE__*/ new a(1)(2)(3);
+        /*@__PURE__*/ new (b(1))(2)(3);
+        /*@__PURE__*/ new (c(1)(2))(3);
+        /*@__PURE__*/ new (d(1)(2)(3));
+        new (/*@__PURE__*/ e)(1)(2)(3);
+        (/*@__PURE__*/ new f(1))(2)(3);
+        (/*@__PURE__*/ new g(1)(2))(3);
+        (/*@__PURE__*/ new h(1)(2)(3));
+    }
+    expect_exact: [
+        "new/* */e(1)(2)(3);",
+        "/* */new f(1)(2)(3);",
+        "/* */new g(1)(2)(3);",
+    ]
+}
+
+issue_2705_3: {
+    options = {
+        side_effects: true,
+    }
+    beautify = {
+        comments: "all",
+    }
+    input: {
+        /*@__PURE__*/ new a.x(1).y(2).z(3);
+        /*@__PURE__*/ new (b.x)(1).y(2).z(3);
+        /*@__PURE__*/ new (c.x(1)).y(2).z(3);
+        /*@__PURE__*/ new (d.x(1).y)(2).z(3);
+        /*@__PURE__*/ new (e.x(1).y(2)).z(3);
+        /*@__PURE__*/ new (f.x(1).y(2).z)(3);
+        /*@__PURE__*/ new (g.x(1).y(2).z(3));
+        new (/*@__PURE__*/ h).x(1).y(2).z(3);
+        /* */ new (/*@__PURE__*/ i.x)(1).y(2).z(3);
+        (/*@__PURE__*/ new j.x(1)).y(2).z(3);
+        (/*@__PURE__*/ new k.x(1).y)(2).z(3);
+        (/*@__PURE__*/ new l.x(1).y(2)).z(3);
+        (/*@__PURE__*/ new m.x(1).y(2).z)(3);
+        (/*@__PURE__*/ new n.x(1).y(2).z(3));
+    }
+    expect_exact: [
+        "new/* */h.x(1).y(2).z(3);",
+        "/* */new/* */i.x(1).y(2).z(3);",
+        "/* */new j.x(1).y(2).z(3);",
+        "/* */new k.x(1).y(2).z(3);",
+        "/* */new l.x(1).y(2).z(3);",
+        "/* */new m.x(1).y(2).z(3);",
+    ]
+}
+
+issue_2705_4: {
+    options = {
+        side_effects: true,
+    }
+    input: {
+        (/*@__PURE__*/ new x(), y());
+        (w(), /*@__PURE__*/ new x(), y());
+    }
+    expect: {
+        y();
+        w(), y();
+    }
+}
+
+issue_2705_5: {
+    options = {
+        side_effects: true,
+    }
+    input: {
+        [ /*@__PURE__*/ new x() ];
+        [ /*@__PURE__*/ new x(), y() ];
+        [ w(), /*@__PURE__*/ new x(), y() ];
+    }
+    expect: {
+        y();
+        w(), y();
+    }
+}
+
+issue_2705_6: {
+    options = {
+        side_effects: true,
+    }
+    beautify = {
+        comments: "all",
+    }
+    input: {
+        /*@__PURE__*/new (g() || h())(x(), y());
+        /* */ new (/*@__PURE__*/ (a() || b()))(c(), d());
+    }
+    expect_exact: [
+        "/* */x(),y();",
+        "/* */new(/* */a()||b())(c(),d());",
+    ]
+}

test/compress/pure_getters.js

@@ -348,6 +348,57 @@ set_immutable_4: {
     expect_stdout: true
 }
 
+set_immutable_5: {
+    options = {
+        collapse_vars: true,
+        conditionals: true,
+        evaluate: true,
+        pure_getters: "strict",
+        reduce_funcs: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        "use strict";
+        var a = 1;
+        a.foo += "";
+        if (a.foo) console.log("FAIL");
+        else console.log("PASS");
+    }
+    expect: {
+        "use strict";
+        1..foo += "";
+        1..foo ? console.log("FAIL") : console.log("PASS");
+    }
+    expect_stdout: true
+}
+
+set_immutable_6: {
+    options = {
+        collapse_vars: true,
+        conditionals: true,
+        evaluate: true,
+        pure_getters: "strict",
+        reduce_funcs: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = 1;
+        a.foo += "";
+        if (a.foo) console.log("FAIL");
+        else console.log("PASS");
+    }
+    expect: {
+        1..foo ? console.log("FAIL") : console.log("PASS");
+    }
+    expect_stdout: true
+}
+
 set_mutable_1: {
     options = {
         collapse_vars: true,
@@ -611,3 +662,35 @@ issue_2313_6: {
         x();
     }
 }
+
+issue_2678: {
+    options = {
+        pure_getters: "strict",
+        side_effects: true,
+    }
+    input: {
+        var a = 1, c = "FAIL";
+        (function f() {
+            (a-- && f()).p;
+            return {
+                get p() {
+                    c = "PASS";
+                }
+            };
+        })();
+        console.log(c);
+    }
+    expect: {
+        var a = 1, c = "FAIL";
+        (function f() {
+            (a-- && f()).p;
+            return {
+                get p() {
+                    c = "PASS";
+                }
+            };
+        })();
+        console.log(c);
+    }
+    expect_stdout: "PASS"
+}

test/compress/reduce_vars.js

@@ -299,7 +299,7 @@ unsafe_evaluate_modified: {
         console.log(function(){ var o={p:1}; o.p++; console.log(o.p); return o.p; }());
         console.log(function(){ var o={p:2}; --o.p; console.log(o.p); return o.p; }());
         console.log(function(){ var o={p:3}; o.p += ""; console.log(o.p); return o.p; }());
-        console.log(function(){ var o={p:4}; o = {}; console.log(o.p); return o.p; }());
+        console.log(function(){ var o; o = {}; console.log(o.p); return o.p; }());
         console.log(function(){ var o={p:5}; o.p = -9; console.log(o.p); return o.p; }());
         function inc() { this.p++; }
         console.log(function(){ var o={p:6}; inc.call(o); console.log(o.p); return o.p; }());
@@ -1355,10 +1355,9 @@ defun_inline_1: {
         function f() {
             return function(b) {
                 return b;
-            }(2) + h();
+            }(2) + function h() {
-            function h() {
                 return h();
-            }
+            }();
         }
     }
 }
@@ -1382,12 +1381,11 @@ defun_inline_2: {
     }
     expect: {
         function f() {
-            function h() {
-                return h();
-            }
             return function(b) {
                 return b;
-            }(2) + h();
+            }(2) + function h() {
+                return h();
+            }();
         }
     }
 }
@@ -2314,8 +2312,7 @@ delay_def: {
     }
     expect: {
         function f() {
-            return a;
+            return;
-            var a;
         }
         function g() {
             return a;
@@ -2326,6 +2323,28 @@ delay_def: {
     expect_stdout: true
 }
 
+delay_def_lhs: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+    }
+    input: {
+        console.log(function() {
+            long_name++;
+            return long_name;
+            var long_name;
+        }());
+    }
+    expect: {
+        console.log(function() {
+            long_name++;
+            return long_name;
+            var long_name;
+        }());
+    }
+    expect_stdout: "NaN"
+}
+
 booleans: {
     options = {
         booleans: true,
@@ -4954,3 +4973,306 @@ issue_2598: {
     }
     expect_stdout: "true"
 }
+
+var_if: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            if (x()) {
+                var a;
+                if (!g) a = true;
+                if (a) g();
+            }
+        }
+    }
+    expect: {
+        function f() {
+            if (x()) {
+                var a;
+                if (!g) a = true;
+                if (a) g();
+            }
+        }
+    }
+}
+
+defun_assign: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+    }
+    input: {
+        console.log(typeof a);
+        a = 42;
+        console.log(typeof a);
+        function a() {}
+        console.log(typeof a);
+    }
+    expect: {
+        console.log(typeof a);
+        a = 42;
+        console.log(typeof a);
+        function a() {}
+        console.log(typeof a);
+    }
+    expect_stdout: [
+        "function",
+        "number",
+        "number",
+    ]
+}
+
+defun_var_1: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        toplevel: true,
+        typeofs: true,
+        unused: true,
+    }
+    input: {
+        var a = 42, b;
+        function a() {}
+        function b() {}
+        console.log(typeof a, typeof b);
+    }
+    expect: {
+        var a = 42;
+        function a() {}
+        console.log(typeof a, "function");
+    }
+    expect_stdout: "number function"
+}
+
+defun_var_2: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        toplevel: true,
+        typeofs: true,
+        unused: true,
+    }
+    input: {
+        function a() {}
+        function b() {}
+        var a = 42, b;
+        console.log(typeof a, typeof b);
+    }
+    expect: {
+        function a() {}
+        var a = 42;
+        console.log(typeof a, "function");
+    }
+    expect_stdout: "number function"
+}
+
+defun_var_3: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        toplevel: true,
+        typeofs: true,
+        unused: true,
+    }
+    input: {
+        function a() {}
+        function b() {}
+        console.log(typeof a, typeof b);
+        var a = 42, b;
+    }
+    expect: {
+        function a() {}
+        console.log(typeof a, "function");
+        var a = 42;
+    }
+    expect_stdout: "function function"
+}
+
+defun_catch_1: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function a() {}
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect_stdout: "42"
+}
+
+defun_catch_2: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            function a() {}
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect_stdout: "42"
+}
+
+defun_catch_3: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            throw 42;
+            function a() {}
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect_stdout: "42"
+}
+
+defun_catch_4: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            throw 42;
+        } catch (a) {
+            function a() {}
+            console.log(a);
+        }
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            function a() {}
+            console.log(a);
+        }
+    }
+    expect_stdout: true
+}
+
+defun_catch_5: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+            function a() {}
+        }
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+            function a() {}
+        }
+    }
+    expect_stdout: true
+}
+
+defun_catch_6: {
+    options = {
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+        function a() {}
+    }
+    expect: {
+        try {
+            throw 42;
+        } catch (a) {
+            console.log(a);
+        }
+    }
+    expect_stdout: "42"
+}
+
+duplicate_lambda_defun_name_1: {
+    options = {
+        reduce_vars: true,
+    }
+    input: {
+        console.log(function f(a) {
+            function f() {}
+            return f.length;
+        }());
+    }
+    expect: {
+        console.log(function f(a) {
+            function f() {}
+            return f.length;
+        }());
+    }
+    expect_stdout: "0"
+}
+
+duplicate_lambda_defun_name_2: {
+    options = {
+        passes: 2,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        console.log(function f(a) {
+            function f() {}
+            return f.length;
+        }());
+    }
+    expect: {
+        console.log(function(a) {
+            return function() {}.length;
+        }());
+    }
+    expect_stdout: "0"
+}

test/compress/sequences.js

@@ -796,3 +796,66 @@ cascade_assignment_in_return: {
         }
     }
 }
+
+hoist_defun: {
+    options = {
+        join_vars: true,
+        sequences: true,
+    }
+    input: {
+        x();
+        function f() {}
+        y();
+    }
+    expect: {
+        function f() {}
+        x(), y();
+    }
+}
+
+hoist_decl: {
+    options = {
+        join_vars: true,
+        sequences: true,
+    }
+    input: {
+        var a;
+        w();
+        var b = x();
+        y();
+        for (var c; 0;) z();
+        var d;
+    }
+    expect: {
+        var a;
+        w();
+        var b = x(), c, d;
+        for (y(); 0;) z();
+    }
+}
+
+for_init_var: {
+    options = {
+        join_vars: true,
+        unused: false,
+    }
+    input: {
+        var a = "PASS";
+        (function() {
+            var b = 42;
+            for (var c = 5; c > 0;) c--;
+            a = "FAIL";
+            var a;
+        })();
+        console.log(a);
+    }
+    expect: {
+        var a = "PASS";
+        (function() {
+            for (var b = 42, c = 5, a; c > 0;) c--;
+            a = "FAIL";
+        })();
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}

test/compress/typeof.js

@@ -100,7 +100,7 @@ typeof_defun_1: {
         g = 42;
         console.log("YES");
         "function" == typeof g && g();
-        h();
+        "function" == typeof h && h();
     }
     expect_stdout: [
         "YES",
@@ -138,3 +138,166 @@ typeof_defun_2: {
         "2",
     ]
 }
+
+duplicate_defun_arg_name: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        function long_name(long_name) {
+            return typeof long_name;
+        }
+        console.log(typeof long_name, long_name());
+    }
+    expect: {
+        function long_name(long_name) {
+            return typeof long_name;
+        }
+        console.log(typeof long_name, long_name());
+    }
+    expect_stdout: "function undefined"
+}
+
+duplicate_lambda_arg_name: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        console.log(function long_name(long_name) {
+            return typeof long_name;
+        }());
+    }
+    expect: {
+        console.log(function long_name(long_name) {
+            return typeof long_name;
+        }());
+    }
+    expect_stdout: "undefined"
+}
+
+issue_2728_1: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        (function arguments() {
+            console.log(typeof arguments);
+        })();
+    }
+    expect: {
+        (function arguments() {
+            console.log(typeof arguments);
+        })();
+    }
+    expect_stdout: "object"
+}
+
+issue_2728_2: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        function arguments() {
+            return typeof arguments;
+        }
+        console.log(typeof arguments, arguments());
+    }
+    expect: {
+        function arguments() {
+            return typeof arguments;
+        }
+        console.log(typeof arguments, arguments());
+    }
+    expect_stdout: "function object"
+}
+
+issue_2728_3: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        (function() {
+            function arguments() {
+            }
+            console.log(typeof arguments);
+        })();
+    }
+    expect: {
+        (function() {
+            function arguments() {
+            }
+            console.log("function");
+        })();
+    }
+    expect_stdout: "function"
+}
+
+issue_2728_4: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        toplevel: true,
+        typeofs: true,
+    }
+    input: {
+        function arguments() {
+        }
+        console.log(typeof arguments);
+    }
+    expect: {
+        function arguments() {
+        }
+        console.log("function");
+    }
+    expect_stdout: "function"
+}
+
+issue_2728_5: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        (function arguments(arguments) {
+            console.log(typeof arguments);
+        })();
+    }
+    expect: {
+        (function arguments(arguments) {
+            console.log(typeof arguments);
+        })();
+    }
+    expect_stdout: "undefined"
+}
+
+issue_2728_6: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        typeofs: true,
+    }
+    input: {
+        function arguments(arguments) {
+            return typeof arguments;
+        }
+        console.log(typeof arguments, arguments());
+    }
+    expect: {
+        function arguments(arguments) {
+            return typeof arguments;
+        }
+        console.log(typeof arguments, arguments());
+    }
+    expect_stdout: "function undefined"
+}

test/input/issue-1242/qux.js

@@ -1,4 +1,4 @@
-var a = bar(1+2);
+var x = bar(1+2);
-var b = baz(3+9);
+var y = baz(3+9);
-print('q' + 'u' + 'x', a, b);
+print('q' + 'u' + 'x', x, y);
 foo(5+6);

test/jetstream.js

@@ -5,11 +5,7 @@
 
 var site = "http://browserbench.org/JetStream";
 if (typeof phantom == "undefined") {
-    // workaround for tty output truncation upon process.exit()
+    require("../tools/exit");
-    [process.stdout, process.stderr].forEach(function(stream){
-        if (stream._handle && stream._handle.setBlocking)
-            stream._handle.setBlocking(true);
-    });
     var args = process.argv.slice(2);
     var debug = args.indexOf("--debug");
     if (debug >= 0) {

test/mocha/comment.js

@@ -219,4 +219,24 @@ describe("Comment", function() {
         if (result.error) throw result.error;
         assert.strictEqual(result.code, "/*a*/ /*b*/(function(){/*c*/}/*d*/ /*e*/)();");
     });
+
+    it("Should output line comments after statements", function() {
+        var result = uglify.minify([
+            "x()//foo",
+            "{y()//bar",
+            "}",
+        ].join("\n"), {
+            compress: false,
+            mangle: false,
+            output: {
+                comments: "all",
+            },
+        });
+        if (result.error) throw result.error;
+        assert.strictEqual(result.code, [
+            "x();//foo",
+            "{y();//bar",
+            "}",
+        ].join("\n"));
+    });
 });

test/mocha/minify.js

@@ -42,8 +42,15 @@ describe("minify", function() {
             original += code;
             compressed += result.code;
         });
-        assert.strictEqual(JSON.stringify(cache).slice(0, 20), '{"cname":5,"props":{');
+        assert.strictEqual(JSON.stringify(cache).slice(0, 10), '{"props":{');
-        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}var c=console.log.bind(console);function l(o){c("Foo:",2*o)}var f=n(3),i=r(12);c("qux",f,i),l(11);');
+        assert.strictEqual(compressed, [
+            "function n(n){return 3*n}",
+            "function r(n){return n/2}",
+            "var o=console.log.bind(console);",
+            'function c(n){o("Foo:",2*n)}',
+            "var a=n(3),b=r(12);",
+            'o("qux",a,b),c(11);',
+        ].join(""));
         assert.strictEqual(run_code(compressed), run_code(original));
     });
 
@@ -68,12 +75,48 @@ describe("minify", function() {
             original += code;
             compressed += result.code;
         });
-        assert.strictEqual(JSON.stringify(cache).slice(0, 28), '{"vars":{"cname":5,"props":{');
+        assert.strictEqual(JSON.stringify(cache).slice(0, 18), '{"vars":{"props":{');
-        assert.strictEqual(compressed, 'function n(n){return 3*n}function r(n){return n/2}var c=console.log.bind(console);function l(o){c("Foo:",2*o)}var f=n(3),i=r(12);c("qux",f,i),l(11);');
+        assert.strictEqual(compressed, [
+            "function n(n){return 3*n}",
+            "function r(n){return n/2}",
+            "var o=console.log.bind(console);",
+            'function c(n){o("Foo:",2*n)}',
+            "var a=n(3),b=r(12);",
+            'o("qux",a,b),c(11);',
+        ].join(""));
         assert.strictEqual(run_code(compressed), run_code(original));
     });
 
-    it("should not parse invalid use of reserved words", function() {
+    it("Should avoid mangled names in cache", function() {
+        var cache = {};
+        var original = "";
+        var compressed = "";
+        [
+            '"xxxyy";var i={s:1};',
+            '"xxyyy";var j={t:2,u:3},k=4;',
+            'console.log(i.s,j.t,j.u,k);',
+        ].forEach(function(code) {
+            var result = Uglify.minify(code, {
+                compress: false,
+                mangle: {
+                    properties: true,
+                    toplevel: true
+                },
+                nameCache: cache
+            });
+            if (result.error) throw result.error;
+            original += code;
+            compressed += result.code;
+        });
+        assert.strictEqual(compressed, [
+            '"xxxyy";var x={x:1};',
+            '"xxyyy";var y={y:2,a:3},a=4;',
+            'console.log(x.x,y.y,y.a,a);',
+        ].join(""));
+        assert.strictEqual(run_code(compressed), run_code(original));
+    });
+
+    it("Should not parse invalid use of reserved words", function() {
         assert.strictEqual(Uglify.minify("function enum(){}").error, undefined);
         assert.strictEqual(Uglify.minify("function static(){}").error, undefined);
         assert.strictEqual(Uglify.minify("function this(){}").error.message, "Unexpected token: name (this)");

test/run-tests.js

@@ -10,6 +10,7 @@ var semver = require("semver");
 var tests_dir = path.dirname(module.filename);
 var failures = 0;
 var failed_files = {};
+var minify_options = require("./ufuzz.json").map(JSON.stringify);
 
 run_compress_tests();
 if (failures) {
@@ -100,6 +101,15 @@ function run_compress_tests() {
                 quote_style: 3,
                 keep_quoted_props: true
             });
+            try {
+                U.parse(input_code);
+            } catch (ex) {
+                log("!!! Cannot parse input\n---INPUT---\n{input}\n--PARSE ERROR--\n{error}\n\n", {
+                    input: input_formatted,
+                    error: ex,
+                });
+                return false;
+            }
             var options = U.defaults(test.options, {
                 warnings: false
             });
@@ -139,78 +149,77 @@ function run_compress_tests() {
                     output: output,
                     expected: expect
                 });
-                failures++;
+                return false;
-                failed_files[file] = 1;
             }
-            else {
+            // expect == output
-                // expect == output
+            try {
-                try {
+                U.parse(output);
-                    var reparsed_ast = U.parse(output);
+            } catch (ex) {
-                } catch (ex) {
+                log("!!! Test matched expected result but cannot parse output\n---INPUT---\n{input}\n---OUTPUT---\n{output}\n--REPARSE ERROR--\n{error}\n\n", {
-                    log("!!! Test matched expected result but cannot parse output\n---INPUT---\n{input}\n---OUTPUT---\n{output}\n--REPARSE ERROR--\n{error}\n\n", {
+                    input: input_formatted,
+                    output: output,
+                    error: ex,
+                });
+                return false;
+            }
+            if (test.expect_warnings) {
+                U.AST_Node.warn_function = original_warn_function;
+                var expected_warnings = make_code(test.expect_warnings, {
+                    beautify: false,
+                    quote_style: 2, // force double quote to match JSON
+                });
+                warnings_emitted = warnings_emitted.map(function(input) {
+                    return input.split(process.cwd() + path.sep).join("").split(path.sep).join("/");
+                });
+                var actual_warnings = JSON.stringify(warnings_emitted);
+                if (expected_warnings != actual_warnings) {
+                    log("!!! failed\n---INPUT---\n{input}\n---EXPECTED WARNINGS---\n{expected_warnings}\n---ACTUAL WARNINGS---\n{actual_warnings}\n\n", {
                         input: input_formatted,
-                        output: output,
+                        expected_warnings: expected_warnings,
-                        error: ex.toString(),
+                        actual_warnings: actual_warnings,
                     });
-                    failures++;
+                    return false;
-                    failed_files[file] = 1;
-                }
-                if (test.expect_warnings) {
-                    U.AST_Node.warn_function = original_warn_function;
-                    var expected_warnings = make_code(test.expect_warnings, {
-                        beautify: false,
-                        quote_style: 2, // force double quote to match JSON
-                    });
-                    warnings_emitted = warnings_emitted.map(function(input) {
-                      return input.split(process.cwd() + path.sep).join("").split(path.sep).join("/");
-                    });
-                    var actual_warnings = JSON.stringify(warnings_emitted);
-                    if (expected_warnings != actual_warnings) {
-                        log("!!! failed\n---INPUT---\n{input}\n---EXPECTED WARNINGS---\n{expected_warnings}\n---ACTUAL WARNINGS---\n{actual_warnings}\n\n", {
-                            input: input_formatted,
-                            expected_warnings: expected_warnings,
-                            actual_warnings: actual_warnings,
-                        });
-                        failures++;
-                        failed_files[file] = 1;
-                    }
-                }
-                if (test.expect_stdout
-                    && (!test.node_version || semver.satisfies(process.version, test.node_version))) {
-                    var stdout = sandbox.run_code(input_code);
-                    if (test.expect_stdout === true) {
-                        test.expect_stdout = stdout;
-                    }
-                    if (!sandbox.same_stdout(test.expect_stdout, stdout)) {
-                        log("!!! Invalid input or expected stdout\n---INPUT---\n{input}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
-                            input: input_formatted,
-                            expected_type: typeof test.expect_stdout == "string" ? "STDOUT" : "ERROR",
-                            expected: test.expect_stdout,
-                            actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
-                            actual: stdout,
-                        });
-                        failures++;
-                        failed_files[file] = 1;
-                    } else {
-                        stdout = sandbox.run_code(output);
-                        if (!sandbox.same_stdout(test.expect_stdout, stdout)) {
-                            log("!!! failed\n---INPUT---\n{input}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
-                                input: input_formatted,
-                                expected_type: typeof test.expect_stdout == "string" ? "STDOUT" : "ERROR",
-                                expected: test.expect_stdout,
-                                actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
-                                actual: stdout,
-                            });
-                            failures++;
-                            failed_files[file] = 1;
-                        }
-                    }
                 }
             }
+            if (test.expect_stdout
+                && (!test.node_version || semver.satisfies(process.version, test.node_version))) {
+                var stdout = sandbox.run_code(input_code);
+                if (test.expect_stdout === true) {
+                    test.expect_stdout = stdout;
+                }
+                if (!sandbox.same_stdout(test.expect_stdout, stdout)) {
+                    log("!!! Invalid input or expected stdout\n---INPUT---\n{input}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
+                        input: input_formatted,
+                        expected_type: typeof test.expect_stdout == "string" ? "STDOUT" : "ERROR",
+                        expected: test.expect_stdout,
+                        actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
+                        actual: stdout,
+                    });
+                    return false;
+                }
+                stdout = sandbox.run_code(output);
+                if (!sandbox.same_stdout(test.expect_stdout, stdout)) {
+                    log("!!! failed\n---INPUT---\n{input}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
+                        input: input_formatted,
+                        expected_type: typeof test.expect_stdout == "string" ? "STDOUT" : "ERROR",
+                        expected: test.expect_stdout,
+                        actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
+                        actual: stdout,
+                    });
+                    return false;
+                }
+                if (!reminify(test.options, input_code, input_formatted, test.expect_stdout)) {
+                    return false;
+                }
+            }
+            return true;
         }
         var tests = parse_test(path.resolve(dir, file));
         for (var i in tests) if (tests.hasOwnProperty(i)) {
-            test_case(tests[i]);
+            if (!test_case(tests[i])) {
+                failures++;
+                failed_files[file] = 1;
+            }
         }
     }
     files.forEach(function(file){
@@ -346,3 +355,46 @@ function evaluate(code) {
         code = make_code(code, { beautify: true });
     return new Function("return(" + code + ")")();
 }
+
+// Try to reminify original input with standard options
+// to see if it matches expect_stdout.
+function reminify(orig_options, input_code, input_formatted, expect_stdout) {
+    for (var i = 0; i < minify_options.length; i++) {
+        var options = JSON.parse(minify_options[i]);
+        if (options.compress) [
+            "keep_fargs",
+            "keep_fnames",
+        ].forEach(function(name) {
+            if (name in orig_options) {
+                options.compress[name] = orig_options[name];
+            }
+        });
+        var options_formatted = JSON.stringify(options, null, 4);
+        var result = U.minify(input_code, options);
+        if (result.error) {
+            log("!!! failed input reminify\n---INPUT---\n{input}\n--ERROR---\n{error}\n\n", {
+                input: input_formatted,
+                error: result.error,
+            });
+            return false;
+        } else {
+            var stdout = sandbox.run_code(result.code);
+            if (typeof expect_stdout != "string" && typeof stdout != "string" && expect_stdout.name == stdout.name) {
+                stdout = expect_stdout;
+            }
+            if (!sandbox.same_stdout(expect_stdout, stdout)) {
+                log("!!! failed running reminified input\n---INPUT---\n{input}\n---OPTIONS---\n{options}\n---OUTPUT---\n{output}\n---EXPECTED {expected_type}---\n{expected}\n---ACTUAL {actual_type}---\n{actual}\n\n", {
+                    input: input_formatted,
+                    options: options_formatted,
+                    output: result.code,
+                    expected_type: typeof expect_stdout == "string" ? "STDOUT" : "ERROR",
+                    expected: expect_stdout,
+                    actual_type: typeof stdout == "string" ? "STDOUT" : "ERROR",
+                    actual: stdout,
+                });
+                return false;
+            }
+        }
+    }
+    return true;
+}

test/ufuzz.js

@@ -6,11 +6,7 @@
 // bin/uglifyjs s.js -c && bin/uglifyjs s.js -c passes=3 && bin/uglifyjs s.js -c passes=3 -m
 // cat s.js | node && node s.js && bin/uglifyjs s.js -c | node && bin/uglifyjs s.js -c passes=3 | node && bin/uglifyjs s.js -c passes=3 -m | node
 
-// workaround for tty output truncation upon process.exit()
+require("../tools/exit");
-[process.stdout, process.stderr].forEach(function(stream){
-    if (stream._handle && stream._handle.setBlocking)
-        stream._handle.setBlocking(true);
-});
 
 var UglifyJS = require("..");
 var randomBytes = require("crypto").randomBytes;
@@ -127,6 +123,9 @@ for (var i = 2; i < process.argv.length; ++i) {
 }
 
 var VALUES = [
+    '"a"',
+    '"b"',
+    '"c"',
     '""',
     'true',
     'false',
@@ -329,7 +328,8 @@ function createTopLevelCode() {
         rng(2) == 0
         ? createStatements(3, MAX_GENERATION_RECURSION_DEPTH, CANNOT_THROW, CANNOT_BREAK, CANNOT_CONTINUE, CANNOT_RETURN, 0)
         : createFunctions(rng(MAX_GENERATED_TOPLEVELS_PER_RUN) + 1, MAX_GENERATION_RECURSION_DEPTH, DEFUN_OK, CANNOT_THROW, 0),
-        'console.log(null, a, b, c);' // preceding `null` makes for a cleaner output (empty string still shows up etc)
+        // preceding `null` makes for a cleaner output (empty string still shows up etc)
+        'console.log(null, a, b, c, Infinity, NaN, undefined);'
     ].join('\n');
 }
 
@@ -635,6 +635,8 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
       case p++:
       case p++:
         return getVarName();
+      case p++:
+        return getVarName() + createAssignment() + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow);
       case p++:
         return createExpression(recurmax, COMMA_OK, stmtDepth, canThrow);
       case p++:

tools/exit.js

@@ -0,0 +1,15 @@
+// workaround for tty output truncation upon process.exit()
+var exit = process.exit;
+process.exit = function() {
+    var args = [].slice.call(arguments);
+    process.once("uncaughtException", function() {
+        (function callback() {
+            if (process.stdout.bufferSize || process.stderr.bufferSize) {
+                setImmediate(callback);
+            } else {
+                exit.apply(process, args);
+            }
+        })();
+    });
+    throw exit;
+};