v3.9.0

fixes #3777

.github/workflows/ci.yml

@@ -4,7 +4,7 @@ jobs:
   test:
     strategy:
       matrix:
-        node: [ "0.10", "0.12", 4, 6, 8, 10, latest ]
+        node: [ "0.10", "0.12", "4", "6", "8", "10", latest ]
         os: [ ubuntu-latest, windows-latest ]
         script: [ compress, mocha, release/benchmark, release/jetstream ]
     name: ${{ matrix.node }} ${{ matrix.os }} ${{ matrix.script }}
@@ -21,11 +21,19 @@ jobs:
       - name: Perform tests
         shell: bash
         run: |
-          git clone --branch v1.5.3 --depth 1 https://github.com/jasongin/nvs.git ~/.nvs
+          git clone --branch v1.5.4 --depth 1 https://github.com/jasongin/nvs.git ~/.nvs
+          while ! timeout 60 bash -c '. ~/.nvs/nvs.sh add $NODE && nvs use $NODE'; do
+            cd ~/.nvs
+            git clean -xdf
+            cd -
+          done
           . ~/.nvs/nvs.sh --version
-          nvs add $NODE
           nvs use $NODE
           node --version
-          npm --version --no-update-notifier
-          npm install --no-audit --no-optional --no-save --no-update-notifier
+          npm config set audit false
+          npm config set optional false
+          npm config set save false
+          npm config set update-notifier false
+          npm --version
+          while !(npm install); do echo "'npm install' failed - retrying..."; done
           node test/$TYPE

.github/workflows/ufuzz.yml

@@ -15,11 +15,19 @@ jobs:
       - name: Perform fuzzing
         shell: bash
         run: |
-          git clone --branch v1.5.3 --depth 1 https://github.com/jasongin/nvs.git ~/.nvs
+          git clone --branch v1.5.4 --depth 1 https://github.com/jasongin/nvs.git ~/.nvs
+          while ! timeout 60 bash -c '. ~/.nvs/nvs.sh add 10 && nvs use 10'; do
+            cd ~/.nvs
+            git clean -xdf
+            cd -
+          done
           . ~/.nvs/nvs.sh --version
-          nvs add 10
           nvs use 10
           node --version
-          npm --version --no-update-notifier
-          npm install --no-audit --no-optional --no-save --no-update-notifier
+          npm config set audit false
+          npm config set optional false
+          npm config set save false
+          npm config set update-notifier false
+          npm --version
+          while !(npm install); do echo "'npm install' failed - retrying..."; done
           node test/ufuzz/job 3600000

lib/compress.js

@@ -318,7 +318,7 @@ merge(Compressor.prototype, {
         if (value instanceof AST_RegExp) return native_fns.RegExp[name] && !value.value.global;
     }
 
-    function is_modified(compressor, tw, node, value, level, immutable) {
+    function is_modified(compressor, tw, node, value, level, immutable, recursive) {
         var parent = tw.parent(level);
         if (compressor.option("unsafe") && parent instanceof AST_Dot && is_read_only_fn(value, parent.property)) {
             return;
@@ -342,7 +342,7 @@ merge(Compressor.prototype, {
         }
         if (parent instanceof AST_PropAccess && parent.expression === node) {
             var prop = read_property(value, parent);
-            return !immutable && is_modified(compressor, tw, parent, prop, level + 1);
+            return (!immutable || recursive) && is_modified(compressor, tw, parent, prop, level + 1);
         }
     }
 
@@ -759,7 +759,8 @@ merge(Compressor.prototype, {
                 d.fixed = false;
             } else if (d.fixed) {
                 value = this.fixed_value();
-                if (recursive_ref(tw, d)) {
+                var recursive = recursive_ref(tw, d);
+                if (recursive) {
                     d.recursive_refs++;
                 } else if (value && ref_once(tw, compressor, d)) {
                     d.single_use = value instanceof AST_Lambda && !value.pinned()
@@ -767,7 +768,7 @@ merge(Compressor.prototype, {
                 } else {
                     d.single_use = false;
                 }
-                if (is_modified(compressor, tw, this, value, 0, is_immutable(value))) {
+                if (is_modified(compressor, tw, this, value, 0, is_immutable(value), recursive)) {
                     if (d.single_use) {
                         d.single_use = "m";
                     } else {
@@ -995,9 +996,7 @@ merge(Compressor.prototype, {
 
     function needs_unbinding(compressor, val) {
         return val instanceof AST_PropAccess
-            || compressor.has_directive("use strict")
-                && is_undeclared_ref(val)
-                && val.name == "eval";
+            || is_undeclared_ref(val) && val.name == "eval";
     }
 
     // we shouldn't compress (1,func)(something) to
@@ -3243,6 +3242,7 @@ merge(Compressor.prototype, {
             }
             if (isNaN(result)) return compressor.find_parent(AST_With) ? this : result;
             if (compressor.option("unsafe_math")
+                && !ignore_side_effects
                 && result
                 && typeof result == "number"
                 && (this.operator == "+" || this.operator == "-")) {
@@ -5812,31 +5812,54 @@ merge(Compressor.prototype, {
         var is_func = fn instanceof AST_Lambda;
         var stat = is_func && fn.first_statement();
         var can_inline = compressor.option("inline") && !self.is_expr_pure(compressor);
-        if (exp === fn && can_inline && stat instanceof AST_Return) {
+        if (can_inline && stat instanceof AST_Return) {
             var value = stat.value;
-            if (!value || value.is_constant_expression()) {
+            if (exp === fn && (!value || value.is_constant_expression())) {
                 var args = self.args.concat(value || make_node(AST_Undefined, self));
                 return make_sequence(self, args).optimize(compressor);
             }
         }
         if (is_func) {
-            var def, value, scope, in_loop, level = -1;
+            var def, value, var_assigned = false;
             if (can_inline
                 && !fn.uses_arguments
                 && !fn.pinned()
                 && !(fn.name && fn instanceof AST_Function)
                 && (value = can_flatten_body(stat))
                 && (exp === fn
-                    || compressor.option("unused")
-                        && (def = exp.definition()).references.length == 1
-                        && !recursive_ref(compressor, def)
-                        && fn.is_constant_expression(exp.scope))
-                && !self.pure
-                && !fn.contains_this()
-                && can_inject_symbols()) {
-                fn._squeezed = true;
-                if (exp !== fn) fn.parent_scope = exp.scope;
-                return make_sequence(self, flatten_fn()).optimize(compressor);
+                    || !recursive_ref(compressor, def = exp.definition()) && fn.is_constant_expression(exp.scope))
+                && !fn.contains_this()) {
+                if (can_substitute_directly()) {
+                    var args = self.args.slice();
+                    args.push(value.clone(true).transform(new TreeTransformer(function(node) {
+                        if (node instanceof AST_SymbolRef) {
+                            var def = node.definition();
+                            if (fn.variables.get(node.name) !== def) {
+                                if (exp !== fn) def.references.push(node);
+                                return node;
+                            }
+                            var index = resolve_index(def);
+                            var arg = args[index];
+                            if (!arg) return make_node(AST_Undefined, self);
+                            args[index] = null;
+                            var parent = this.parent();
+                            return parent ? maintain_this_binding(compressor, parent, node, arg) : arg;
+                        }
+                    })));
+                    var node = make_sequence(self, args.filter(function(arg) {
+                        return arg;
+                    })).optimize(compressor);
+                    node = maintain_this_binding(compressor, compressor.parent(), compressor.self(), node);
+                    if (best_of(compressor, self, node) === node) return node;
+                }
+                var scope, in_loop, level = -1;
+                if ((exp === fn || compressor.option("unused") && exp.definition().references.length == 1)
+                    && can_inject_symbols()) {
+                    fn._squeezed = true;
+                    if (exp !== fn) fn.parent_scope = exp.scope;
+                    var node = make_sequence(self, flatten_fn()).optimize(compressor);
+                    return maintain_this_binding(compressor, compressor.parent(), compressor.self(), node);
+                }
             }
             if (compressor.option("side_effects")
                 && all(fn.body, is_empty)
@@ -5886,10 +5909,12 @@ merge(Compressor.prototype, {
             for (var i = 0; i < len; i++) {
                 var line = fn.body[i];
                 if (line instanceof AST_Var) {
-                    if (stat && !all(line.definitions, function(var_def) {
+                    var assigned = var_assigned || !all(line.definitions, function(var_def) {
                         return !var_def.value;
-                    })) {
-                        return false;
+                    });
+                    if (assigned) {
+                        var_assigned = true;
+                        if (stat) return false;
                     }
                 } else if (line instanceof AST_Defun || line instanceof AST_EmptyStatement) {
                     continue;
@@ -5902,6 +5927,61 @@ merge(Compressor.prototype, {
             return return_value(stat);
         }
 
+        function resolve_index(def) {
+            for (var i = fn.argnames.length; --i >= 0;) {
+                if (fn.argnames[i].definition() === def) return i;
+            }
+        }
+
+        function can_substitute_directly() {
+            if (var_assigned) return;
+            if (compressor.option("inline") <= 1 && fn.argnames.length) return;
+            if (!fn.variables.all(function(def) {
+                return def.references.length < 2 && def.orig[0] instanceof AST_SymbolFunarg;
+            })) return;
+            var abort = false;
+            var begin;
+            var in_order = [];
+            var side_effects = false;
+            value.walk(new TreeWalker(function(node) {
+                if (abort) return true;
+                if (node instanceof AST_Binary && lazy_op[node.operator]
+                    || node instanceof AST_Conditional) {
+                    in_order = null;
+                    return;
+                }
+                if (node instanceof AST_Scope) return abort = true;
+                var def;
+                if (node instanceof AST_SymbolRef && fn.variables.get(node.name) === (def = node.definition())) {
+                    if (def.init instanceof AST_Defun) return abort = true;
+                    if (is_lhs(node, this.parent())) return abort = true;
+                    var index = resolve_index(def);
+                    if (!(begin < index)) begin = index;
+                    if (!in_order) return;
+                    if (side_effects) {
+                        in_order = null;
+                    } else {
+                        in_order.push(fn.argnames[index]);
+                    }
+                    return;
+                }
+                if (node.has_side_effects(compressor)) side_effects = true;
+            }));
+            if (abort) return;
+            var end = self.args.length;
+            if (in_order && fn.argnames.length >= end) {
+                end = fn.argnames.length;
+                while (end-- > begin && fn.argnames[end] === in_order.pop());
+                end++;
+            }
+            var scope = side_effects && compressor.find_parent(AST_Scope);
+            return end <= begin || all(self.args.slice(begin, end), side_effects ? function(funarg) {
+                return funarg.is_constant_expression(scope);
+            } : function(funarg) {
+                return !funarg.has_side_effects(compressor);
+            });
+        }
+
         function var_exists(defined, name) {
             return defined[name] || identifier_atom[name] || scope.var_names()[name];
         }

lib/minify.js

@@ -203,6 +203,7 @@ function minify(files, options) {
         if (!HOP(options.output, "code") || options.output.code) {
             if (options.sourceMap) {
                 options.output.source_map = SourceMap({
+                    content: options.sourceMap.includeSources,
                     file: options.sourceMap.filename,
                     orig: source_maps,
                     root: options.sourceMap.root
@@ -211,10 +212,8 @@ function minify(files, options) {
                     if (files instanceof AST_Toplevel) {
                         throw new Error("original source content unavailable");
                     } else for (var name in files) if (HOP(files, name)) {
-                        options.output.source_map.get().setSourceContent(name, files[name]);
+                        options.output.source_map.setSourceContent(name, files[name]);
                     }
-                } else {
-                    options.output.source_map.get()._sourcesContents = null;
                 }
             }
             delete options.output.ast;

lib/scope.js

@@ -162,17 +162,22 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
         }
         if (node instanceof AST_SymbolRef) {
             var name = node.name;
-            if (name == "eval" && tw.parent() instanceof AST_Call) {
-                for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) {
-                    s.uses_eval = true;
-                }
-            }
             var sym = node.scope.find_variable(name);
             if (!sym) {
                 sym = self.def_global(node);
             } else if (sym.scope instanceof AST_Lambda && name == "arguments") {
                 sym.scope.uses_arguments = true;
             }
+            if (name == "eval") {
+                var parent = tw.parent();
+                if (parent.TYPE == "Call" && parent.expression === node) {
+                    for (var s = node.scope; s && !s.uses_eval; s = s.parent_scope) {
+                        s.uses_eval = true;
+                    }
+                } else if (sym.undeclared) {
+                    self.uses_eval = true;
+                }
+            }
             node.thedef = sym;
             node.reference(options);
             return true;

lib/sourcemap.js

@@ -43,62 +43,144 @@
 
 "use strict";
 
-// a small wrapper around fitzgen's source-map library
+var vlq_char = characters("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
+var vlq_bits = vlq_char.reduce(function(map, ch, bits) {
+    map[ch] = bits;
+    return map;
+}, Object.create(null));
+
+function vlq_decode(indices, str) {
+    var value = 0;
+    var shift = 0;
+    for (var i = 0, j = 0; i < str.length; i++) {
+        var bits = vlq_bits[str[i]];
+        value += (bits & 31) << shift;
+        if (bits & 32) {
+            shift += 5;
+        } else {
+            indices[j++] += value & 1 ? 0x80000000 | -(value >> 1) : value >> 1;
+            value = shift = 0;
+        }
+    }
+    return j;
+}
+
+function vlq_encode(num) {
+    var result = "";
+    num = Math.abs(num) << 1 | num >>> 31;
+    do {
+        var bits = num & 31;
+        if (num >>>= 5) bits |= 32;
+        result += vlq_char[bits];
+    } while (num);
+    return result;
+}
+
+function create_array_map() {
+    var map = Object.create(null);
+    var array = [];
+    array.index = function(name) {
+        if (!HOP(map, name)) {
+            map[name] = array.length;
+            array.push(name);
+        }
+        return map[name];
+    };
+    return array;
+}
+
 function SourceMap(options) {
     options = defaults(options, {
+        content: false,
         file: null,
         root: null,
         orig: null,
-        orig_line_diff: 0,
-        dest_line_diff: 0,
     }, true);
-    var generator = new MOZ_SourceMap.SourceMapGenerator({
-        file: options.file,
-        sourceRoot: options.root
-    });
-    var maps = options.orig && Object.create(null);
-    if (maps) for (var source in options.orig) {
-        var map = new MOZ_SourceMap.SourceMapConsumer(options.orig[source]);
-        if (Array.isArray(options.orig[source].sources)) {
-            map._sources.toArray().forEach(function(source) {
-                var sourceContent = map.sourceContentFor(source, true);
-                if (sourceContent) generator.setSourceContent(source, sourceContent);
+    var sources = create_array_map();
+    var sources_content = options.content && Object.create(null);
+    var names = create_array_map();
+    var mappings = "";
+    if (options.orig) Object.keys(options.orig).forEach(function(name) {
+        var map = options.orig[name];
+        var indices = [ 0, 0, 1, 0, 0 ];
+        map.mappings = map.mappings.split(/;/).map(function(line) {
+            indices[0] = 0;
+            return line.split(/,/).map(function(segment) {
+                return indices.slice(0, vlq_decode(indices, segment));
             });
+        });
+        if (!sources_content || !map.sourcesContent) return;
+        for (var i = 0; i < map.sources.length; i++) {
+            var content = map.sourcesContent[i];
+            if (content) sources_content[map.sources[i]] = content;
         }
-        maps[source] = map;
-    }
+    });
+    var generated_line = 1;
+    var generated_column = 0;
+    var source_index = 0;
+    var original_line = 1;
+    var original_column = 0;
+    var name_index = 0;
     return {
-        add: function(source, gen_line, gen_col, orig_line, orig_col, name) {
-            var map = maps && maps[source];
+        add: options.orig ? function(source, gen_line, gen_col, orig_line, orig_col, name) {
+            var map = options.orig[source];
             if (map) {
-                var info = map.originalPositionFor({
-                    line: orig_line,
-                    column: orig_col
-                });
-                if (info.source === null) return;
-                source = info.source;
-                orig_line = info.line;
-                orig_col = info.column;
-                name = info.name || name;
-            }
-            generator.addMapping({
-                name: name,
-                source: source,
-                generated: {
-                    line: gen_line + options.dest_line_diff,
-                    column: gen_col
-                },
-                original: {
-                    line: orig_line + options.orig_line_diff,
-                    column: orig_col
+                var segments = map.mappings[orig_line - 1];
+                if (!segments) return;
+                var indices;
+                for (var i = 0; i < segments.length; i++) {
+                    var col = segments[i][0];
+                    if (orig_col >= col) indices = segments[i];
+                    if (orig_col <= col) break;
                 }
-            });
-        },
-        get: function() {
-            return generator;
-        },
+                if (!indices || indices.length < 4) return;
+                source = map.sources[indices[1]];
+                orig_line = indices[2];
+                orig_col = indices[3];
+                if (indices.length > 4) name = map.names[indices[4]];
+            }
+            add(source, gen_line, gen_col, orig_line, orig_col, name);
+        } : add,
+        setSourceContent: sources_content ? function(source, content) {
+            sources_content[source] = content;
+        } : noop,
         toString: function() {
-            return JSON.stringify(generator.toJSON());
+            return JSON.stringify({
+                version: 3,
+                file: options.file || undefined,
+                sourceRoot: options.root || undefined,
+                sources: sources,
+                sourcesContent: sources_content ? sources.map(function(source) {
+                    return sources_content[source] || null;
+                }) : undefined,
+                names: names,
+                mappings: mappings,
+            });
         }
     };
+
+    function add(source, gen_line, gen_col, orig_line, orig_col, name) {
+        if (generated_line < gen_line) {
+            generated_column = 0;
+            do {
+                mappings += ";";
+            } while (++generated_line < gen_line);
+        } else if (mappings) {
+            mappings += ",";
+        }
+        mappings += vlq_encode(gen_col - generated_column);
+        generated_column = gen_col;
+        var src_idx = sources.index(source);
+        mappings += vlq_encode(src_idx - source_index);
+        source_index = src_idx;
+        mappings += vlq_encode(orig_line - original_line);
+        original_line = orig_line;
+        mappings += vlq_encode(orig_col - original_column);
+        original_column = orig_col;
+        if (name != null) {
+            var name_idx = names.index(name);
+            mappings += vlq_encode(name_idx - name_index);
+            name_index = name_idx;
+        }
+    }
 }

lib/utils.js

@@ -217,6 +217,12 @@ Dictionary.prototype = {
         return this;
     },
     has: function(key) { return ("$" + key) in this._values },
+    all: function(predicate) {
+        for (var i in this._values)
+            if (!predicate(this._values[i], i.substr(1)))
+                return false;
+        return true;
+    },
     each: function(f) {
         for (var i in this._values)
             f(this._values[i], i.substr(1));

package.json

@@ -3,7 +3,7 @@
   "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.8.1",
+  "version": "3.9.0",
   "engines": {
     "node": ">=0.8.0"
   },
@@ -23,8 +23,7 @@
     "LICENSE"
   ],
   "dependencies": {
-    "commander": "~2.20.3",
-    "source-map": "~0.6.1"
+    "commander": "~2.20.3"
   },
   "devDependencies": {
     "acorn": "~7.1.0",

test/compress/evaluate.js

@@ -2174,3 +2174,19 @@ issue_3738: {
     }
     expect_stdout: "Infinity"
 }
+
+issue_3755: {
+    options = {
+        booleans: true,
+        evaluate: true,
+        unsafe: true,
+        unsafe_math: true,
+    }
+    input: {
+        console.log((/4/.exec(1 + (!0 - 5 / "23")) || 0).p);
+    }
+    expect: {
+        console.log((/4/.exec(!0 - 5 / "23" + 1), 0).p);
+    }
+    expect_stdout: "undefined"
+}

test/compress/functions.js

@@ -342,11 +342,7 @@ inner_ref: {
         }(2));
     }
     expect: {
-        console.log(function(a) {
-            return a;
-        }(1), function(a) {
-            return a;
-        }());
+        console.log(1, void 0);
     }
     expect_stdout: "1 undefined"
 }
@@ -1024,9 +1020,7 @@ issue_2616: {
     }
     expect: {
         var c = "FAIL";
-        !function(NaN) {
-            (true << NaN) - 0/0 || (c = "PASS");
-        }([]);
+        (true << []) - NaN || (c = "PASS");
         console.log(c);
     }
     expect_stdout: "PASS"
@@ -1577,7 +1571,23 @@ issue_2663_3: {
     ]
 }
 
-duplicate_argnames: {
+duplicate_argnames_1: {
+    options = {
+        inline: true,
+        side_effects: true,
+    }
+    input: {
+        console.log(function(a, a, a) {
+            return a;
+        }("FAIL", 42, "PASS"));
+    }
+    expect: {
+        console.log("PASS");
+    }
+    expect_stdout: "PASS"
+}
+
+duplicate_argnames_2: {
     options = {
         inline: true,
         reduce_vars: true,
@@ -1595,7 +1605,31 @@ duplicate_argnames: {
     }
     expect: {
         var a = "PASS";
-        console, b && (a = "FAIL");
+        console, void 0 && (a = "FAIL");
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}
+
+duplicate_argnames_3: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = "FAIL";
+        function f(b, b, b) {
+            b && (a = "PASS");
+        }
+        f(null, 0, console, "42".toString());
+        console.log(a);
+    }
+    expect: {
+        var a = "FAIL";
+        b = console, "42".toString(), b && (a = "PASS");
         var b;
         console.log(a);
     }
@@ -1754,8 +1788,7 @@ inline_2: {
     }
     expect: {
         console.log(1);
-        a = 2, console.log(a);
-        var a;
+        console.log(2);
         (function(b) {
             var c = b;
             console.log(c);
@@ -1788,8 +1821,7 @@ inline_3: {
     }
     expect: {
         console.log(1);
-        a = 2, console.log(a);
-        var a;
+        console.log(2);
         b = 3, c = b, console.log(c);
         var b, c;
     }
@@ -1820,8 +1852,7 @@ inline_true: {
     }
     expect: {
         console.log(1);
-        a = 2, console.log(a);
-        var a;
+        console.log(2);
         b = 3, c = b, console.log(c);
         var b, c;
     }
@@ -1857,10 +1888,9 @@ use_before_init_in_loop: {
     expect_stdout: "PASS"
 }
 
-duplicate_arg_var: {
+duplicate_arg_var_1: {
     options = {
         inline: true,
-        toplevel: true,
     }
     input: {
         console.log(function(b) {
@@ -1869,7 +1899,41 @@ duplicate_arg_var: {
         }("PASS"));
     }
     expect: {
-        console.log((b = "PASS", b));
+        console.log("PASS");
+    }
+    expect_stdout: "PASS"
+}
+
+duplicate_arg_var_2: {
+    options = {
+        inline: true,
+        toplevel: true,
+    }
+    input: {
+        console.log(function(b) {
+            return b + "SS";
+            var b;
+        }("PA"));
+    }
+    expect: {
+        console.log("PA" + "SS");
+    }
+    expect_stdout: "PASS"
+}
+
+duplicate_arg_var_3: {
+    options = {
+        inline: true,
+        toplevel: true,
+    }
+    input: {
+        console.log(function(b) {
+            return b + "SS";
+            var b;
+        }("PA", "42".toString()));
+    }
+    expect: {
+        console.log((b = "PA", "42".toString(), b + "SS"));
         var b;
     }
     expect_stdout: "PASS"
@@ -2017,10 +2081,8 @@ issue_3016_1: {
     expect: {
         var b = 1;
         do {
-            a = 3,
-            a[b];
+            3[b];
         } while(0);
-        var a;
         console.log(b);
     }
     expect_stdout: "1"
@@ -2528,10 +2590,9 @@ cross_references_2: {
     options = {
         collapse_vars: true,
         evaluate: true,
-        hoist_props: true,
         inline: true,
-        passes: 4,
-        pure_getters: true,
+        passes: 6,
+        properties: true,
         reduce_vars: true,
         sequences: true,
         side_effects: true,
@@ -3657,9 +3718,7 @@ pr_3595_3: {
         var g = [ "PASS" ];
         console.log(function(problem) {
             return g[problem];
-        }(function(arg) {
-            return g.indexOf(arg);
-        }("PASS")));
+        }(g.indexOf("PASS")));
     }
     expect_stdout: "PASS"
 }
@@ -3785,3 +3844,221 @@ issue_3679_3: {
     }
     expect_stdout: "PASS"
 }
+
+preceding_side_effects: {
+    options = {
+        inline: true,
+    }
+    input: {
+        console.log(function(a, b, c) {
+            return b;
+        }(console, "PASS", 42));
+    }
+    expect: {
+        console.log((console, 42, "PASS"));
+    }
+    expect_stdout: "PASS"
+}
+
+trailing_side_effects: {
+    options = {
+        inline: true,
+    }
+    input: {
+        console.log(function(a, b, c) {
+            return b;
+        }(42, "PASS", console));
+    }
+    expect: {
+        console.log(function(a, b, c) {
+            return b;
+        }(42, "PASS", console));
+    }
+    expect_stdout: "PASS"
+}
+
+preserve_binding_1: {
+    options = {
+        inline: true,
+    }
+    input: {
+        var o = {
+            f: function() {
+                return this === o ? "FAIL" : "PASS";
+            },
+        };
+        console.log(function(a) {
+            return a;
+        }(o.f)());
+    }
+    expect: {
+        var o = {
+            f: function() {
+                return this === o ? "FAIL" : "PASS";
+            },
+        };
+        console.log((0, o.f)());
+    }
+    expect_stdout: "PASS"
+}
+
+preserve_binding_2: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        unused: true,
+    }
+    input: {
+        var o = {
+            f: function() {
+                return this === o ? "FAIL" : "PASS";
+            },
+        };
+        console.log(function(a) {
+            return a;
+        }(o.f)());
+    }
+    expect: {
+        var o = {
+            f: function() {
+                return this === o ? "FAIL" : "PASS";
+            },
+        };
+        console.log((0, o.f)());
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3770: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        unused: true,
+    }
+    input: {
+        (function() {
+            function f(a, a) {
+                var b = function() {
+                    return a || "PASS";
+                }();
+                console.log(b);
+            }
+            f("FAIL");
+        })();
+    }
+    expect: {
+        (function() {
+            b = a || "PASS",
+            console.log(b);
+            var a, b;
+        })();
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3771: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        try {
+            function f(a) {
+                var a = f(1234);
+            }
+            f();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect: {
+        try {
+            (function f(a) {
+                f();
+            })();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3772: {
+    options = {
+        collapse_vars: true,
+        dead_code: true,
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        var a = "PASS";
+        function f() {
+            return a;
+        }
+        var b = f();
+        function g() {
+            console.log(f());
+        }
+        g();
+    }
+    expect: {
+        var a = "PASS";
+        console.log(a);
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3777_1: {
+    options = {
+        inline: true,
+        reduce_vars: true,
+        side_effects: true,
+    }
+    input: {
+        (function() {
+            ff && ff(NaN);
+            function ff(a) {
+                var a = console.log("PASS");
+            }
+        })();
+    }
+    expect: {
+        (function() {
+            ff && ff(NaN);
+            function ff(a) {
+                var a = console.log("PASS");
+            }
+        })();
+    }
+    expect_stdout: "PASS"
+}
+
+issue_3777_2: {
+    options = {
+        inline: true,
+        pure_getters: "strict",
+        reduce_vars: true,
+        side_effects: true,
+        toplevel: true,
+    }
+    input: {
+        ff(ff.p);
+        function ff(a) {
+            var a = console.log("PASS");
+        }
+    }
+    expect: {
+        ff(ff.p);
+        function ff(a) {
+            var a = console.log("PASS");
+        }
+    }
+    expect_stdout: "PASS"
+}

test/compress/issue-2719.js

@@ -26,7 +26,7 @@ warn: {
         }().length);
     }
     expect_warnings: [
-        "WARN: Function.prototype.caller not supported [test/compress/issue-2719.js:5,19]",
         "WARN: Function.prototype.arguments not supported [test/compress/issue-2719.js:5,19]",
+        "WARN: Function.prototype.caller not supported [test/compress/issue-2719.js:5,19]",
     ]
 }

test/compress/issue-3768.js

@@ -0,0 +1,128 @@
+mangle: {
+    mangle = {
+        toplevel: true,
+    }
+    input: {
+        var e = eval, x = 42;
+        (function() {
+            console.log(e("typeof x"));
+        })();
+    }
+    expect: {
+        var e = eval, x = 42;
+        (function() {
+            console.log(e("typeof x"));
+        })();
+    }
+    expect_stdout: true
+}
+
+compress: {
+    options = {
+        collapse_vars: true,
+        inline: true,
+        unused: true,
+    }
+    input: {
+        console.log(function() {
+            var a = 42;
+            return eval("typeof a");
+        }(), function(e) {
+            var a = null;
+            return e("typeof a");
+        }(eval), function(eval) {
+            var a = false;
+            return eval("typeof a");
+        }(eval), function(f) {
+            var a = "STRING";
+            var eval = f;
+            return eval("typeof a");
+        }(eval), function(g) {
+            var a = eval;
+            function eval() {
+                return g;
+            }
+            return eval()("typeof a");
+        }(eval));
+    }
+    expect: {
+        console.log(function() {
+            var a = 42;
+            return eval("typeof a");
+        }(), (0, eval)("typeof a"), function(eval) {
+            var a = false;
+            return eval("typeof a");
+        }(eval), function(f) {
+            var a = "STRING";
+            var eval = f;
+            return eval("typeof a");
+        }(eval), function(g) {
+            var a = eval;
+            function eval() {
+                return g;
+            }
+            return eval()("typeof a");
+        }(eval));
+    }
+    expect_stdout: "number undefined boolean string undefined"
+}
+
+call_arg_1: {
+    mangle = {
+        toplevel: true,
+    }
+    input: {
+        var z = "foo";
+        (function() {
+            var z = false;
+            (function(e) {
+                var z = 42;
+                e("console.log(typeof z)");
+            })(eval);
+        })();
+    }
+    expect: {
+        var z = "foo";
+        (function() {
+            var o = false;
+            (function(o) {
+                var a = 42;
+                o("console.log(typeof z)");
+            })(eval);
+        })();
+    }
+    expect_stdout: true
+}
+
+call_arg_2: {
+    mangle = {
+        toplevel: true,
+    }
+    input: {
+        function eval() {
+            console.log("PASS");
+        }
+        var z = "foo";
+        (function() {
+            var z = false;
+            (function(e) {
+                var z = 42;
+                e("console.log(typeof z)");
+            })(eval);
+        })();
+    }
+    expect: {
+        function n() {
+            console.log("PASS");
+        }
+        var o = "foo";
+        (function() {
+            var o = false;
+            (function(o) {
+                var n = 42;
+                o("console.log(typeof z)");
+            })(n);
+        })();
+    }
+    expect_stdout: "PASS"
+}

test/compress/issue-782.js

@@ -8,7 +8,7 @@ remove_sequence: {
         (0, 1, _decorators.logThis)();
     }
     expect: {
-        eval();
+        (0, eval)();
         logThis();
         (0, _decorators.logThis)();
     }

test/compress/issue-973.js

@@ -53,20 +53,23 @@ this_binding_conditionals: {
 this_binding_collapse_vars: {
     options = {
         collapse_vars: true,
-        toplevel: true,
         unused: true,
     }
     input: {
-        "use strict";
-        var c = a; c();
-        var d = a.b; d();
-        var e = eval; e();
+        function f() {
+            "use strict";
+            var c = a; c();
+            var d = a.b; d();
+            var e = eval; e();
+        }
     }
     expect: {
-        "use strict";
-        a();
-        (0, a.b)();
-        (0, eval)();
+        function f() {
+            "use strict";
+            a();
+            (0, a.b)();
+            (0, eval)();
+        }
     }
 }
 
@@ -97,7 +100,7 @@ this_binding_side_effects: {
         (function(foo) {
             foo();
             (0, foo.bar)();
-            eval("console.log(foo);");
+            (0, eval)("console.log(foo);");
         }());
         (function(foo) {
             "use strict";
@@ -144,7 +147,7 @@ this_binding_sequences: {
             return eval("this");
         }()),
         console.log(typeof function() {
-            return eval("this");
+            return (0, eval)("this");
         }()),
         console.log(typeof function() {
             "use strict";

test/compress/reduce_vars.js

@@ -2289,11 +2289,10 @@ redefine_farg_2: {
         console.log(f([]), g([]), h([]));
     }
     expect: {
-        console.log((a = [], typeof a), "number",function(a, b) {
+        console.log(typeof [], "number",function(a, b) {
             a = b;
             return typeof a;
         }([]));
-        var a;
     }
     expect_stdout: "object number undefined"
 }
@@ -6511,17 +6510,17 @@ issue_3240_3: {
     }
     expect: {
         (function() {
-            (function f(b) {
+            f();
+            function f(b) {
                 if (!f.a) f.a = 0;
                 console.log(f.a.toString());
-                var g = function() {
+                (function() {
                     (b ? function() {} : function() {
                         f.a++;
                         f(1);
                     })();
-                };
-                g();
-            })();
+                })();
+            }
         })();
     }
     expect_stdout: [
@@ -6555,7 +6554,8 @@ issue_3240_4: {
     }
     expect: {
         (function() {
-            (function f(b) {
+            f();
+            function f(b) {
                 if (!f.a) f.a = 0;
                 console.log(f.a.toString());
                 (function() {
@@ -6564,7 +6564,7 @@ issue_3240_4: {
                         f(1);
                     })();
                 })();
-            })();
+            }
         })();
     }
     expect_stdout: [
@@ -6873,3 +6873,42 @@ issue_3666: {
     }
     expect_stdout: "PASS PASS"
 }
+
+issue_3774: {
+    options = {
+        reduce_funcs: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        var f = function() {
+            function g() {
+                if (!g.p) {
+                    g.p = 1;
+                    console.log("PASS");
+                }
+            }
+            return function() {
+                g();
+            };
+        }();
+        f();
+        f();
+    }
+    expect: {
+        var f = function() {
+            function g() {
+                if (!g.p) {
+                    g.p = 1;
+                    console.log("PASS");
+                }
+            }
+            return function() {
+                g();
+            };
+        }();
+        f();
+        f();
+    }
+    expect_stdout: "PASS"
+}

test/exports.js

@@ -13,3 +13,4 @@ exports["to_ascii"] = to_ascii;
 exports["tokenizer"] = tokenizer;
 exports["TreeTransformer"] = TreeTransformer;
 exports["TreeWalker"] = TreeWalker;
+exports["vlq_decode"] = vlq_decode;

test/input/issue-3040/expect.js

@@ -1,2 +1,2 @@
 function _toConsumableArray(arr){if(Array.isArray(arr)){for(var i=0,arr2=Array(arr.length);i<arr.length;i++){arr2[i]=arr[i]}return arr2}else{return Array.from(arr)}}var _require=require("bar"),foo=_require.foo;var _require2=require("world"),hello=_require2.hello;foo.x.apply(foo,_toConsumableArray(foo.y(hello.z)));
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImlucHV0Mi5qcyJdLCJuYW1lcyI6WyJyZXF1aXJlIiwiYXJyIl0sIm1hcHBpbmdzIjoiMEpBQWNBLEtBQVFDIiwic291cmNlc0NvbnRlbnQiOlsiY29uc3Qge2Zvb30gPSByZXF1aXJlKFwiYmFyXCIpO1xuY29uc3Qge2hlbGxvfSA9IHJlcXVpcmUoXCJ3b3JsZFwiKTtcblxuZm9vLngoLi4uZm9vLnkoaGVsbG8ueikpO1xuIl19
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImlucHV0Mi5qcyJdLCJzb3VyY2VzQ29udGVudCI6WyJjb25zdCB7Zm9vfSA9IHJlcXVpcmUoXCJiYXJcIik7XG5jb25zdCB7aGVsbG99ID0gcmVxdWlyZShcIndvcmxkXCIpO1xuXG5mb28ueCguLi5mb28ueShoZWxsby56KSk7XG4iXSwibmFtZXMiOlsicmVxdWlyZSIsImFyciJdLCJtYXBwaW5ncyI6IjBKQUFjQSxLQUFRQyJ9

test/input/issue-3294/output.js

@@ -1,2 +1,2 @@
 new function(){console.log(3)};
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxJQUFyQyxXQUFnQkEsUUFBUUMsSUFBSSIsInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl19
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxJQUFyQyxXQUFnQkEsUUFBUUMsSUFBSSJ9

test/input/issue-520/output.js

@@ -1,2 +1,2 @@
 new function(){console.log(3)};
-//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxJQUFyQyxXQUFnQkEsUUFBUUMsSUFBSSIsInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl19
+//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIl0sInNvdXJjZXNDb250ZW50IjpbImNsYXNzIEZvbyB7IGNvbnN0cnVjdG9yKCl7Y29uc29sZS5sb2coMSsyKTt9IH0gbmV3IEZvbygpO1xuIl0sIm5hbWVzIjpbImNvbnNvbGUiLCJsb2ciXSwibWFwcGluZ3MiOiJBQUErQyxJQUFyQyxXQUFnQkEsUUFBUUMsSUFBSSJ9

test/input/rename/input.js

@@ -1,6 +1,6 @@
 function f(x) {
     return g(x);
     function g(x) {
-        return x;
+        return x + x;
     }
 }

test/mocha/cli.js

@@ -245,7 +245,7 @@ describe("bin/uglifyjs", function() {
             if (err) throw err;
             assert.strictEqual(stdout, [
                 "var Foo=function Foo(){console.log(1+2)};new Foo;var bar=function(){function foo(bar){return bar}return foo}();",
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIiwidGVzdC9pbnB1dC9pc3N1ZS0xMzIzL3NhbXBsZS5qcyJdLCJuYW1lcyI6WyJGb28iLCJjb25zb2xlIiwibG9nIiwiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxJQUFNQSxJQUFJLFNBQUFBLE1BQWdCQyxRQUFRQyxJQUFJLEVBQUUsSUFBTyxJQUFJRixJQ0FuRCxJQUFJRyxJQUFNLFdBQ04sU0FBU0MsSUFBS0QsS0FDVixPQUFPQSxJQUdYLE9BQU9DLElBTEQifQ==",
+                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInN0ZGluIiwidGVzdC9pbnB1dC9pc3N1ZS0xMzIzL3NhbXBsZS5qcyJdLCJuYW1lcyI6WyJGb28iLCJjb25zb2xlIiwibG9nIiwiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxJQUFNQSxJQUFJLFNBQUVBLE1BQWNDLFFBQVFDLElBQUksRUFBRSxJQUFPLElBQUlGLElDQW5ELElBQUlHLElBQU0sV0FDTixTQUFTQyxJQUFLRCxLQUNWLE9BQU9BLElBR1gsT0FBT0MsSUFMRCJ9",
                 "",
             ].join("\n"));
             var stderrLines = stderr.split("\n");
@@ -587,7 +587,7 @@ describe("bin/uglifyjs", function() {
         });
 
         function read_map() {
-            var map = JSON.parse(read("./test/input/issue-1236/simple.js.map"));
+            var map = JSON.parse(read("test/input/issue-1236/simple.js.map"));
             delete map.sourcesContent;
             return JSON.stringify(map).replace(/"/g, '\\"');
         }
@@ -674,7 +674,7 @@ describe("bin/uglifyjs", function() {
         var command = uglifyjscmd + " test/input/rename/input.js --rename";
         exec(command, function(err, stdout, stderr) {
             if (err) throw err;
-            assert.strictEqual(stdout, "function f(a){return b(a);function b(c){return c}}\n");
+            assert.strictEqual(stdout, "function f(a){return b(a);function b(c){return c+c}}\n");
             done();
         });
     });
@@ -682,7 +682,7 @@ describe("bin/uglifyjs", function() {
         var command = uglifyjscmd + " test/input/rename/input.js -mc passes=2 --no-rename";
         exec(command, function(err, stdout, stderr) {
             if (err) throw err;
-            assert.strictEqual(stdout, "function f(n){return function(n){return n}(n)}\n");
+            assert.strictEqual(stdout, "function f(n){return function(n){return n+n}(n)}\n");
             done();
         });
     });
@@ -690,7 +690,7 @@ describe("bin/uglifyjs", function() {
         var command = uglifyjscmd + " test/input/rename/input.js -mc passes=2";
         exec(command, function(err, stdout, stderr) {
             if (err) throw err;
-            assert.strictEqual(stdout, "function f(n){return n}\n");
+            assert.strictEqual(stdout, "function f(n){return n+n}\n");
             done();
         });
     });
@@ -698,7 +698,7 @@ describe("bin/uglifyjs", function() {
         var command = uglifyjscmd + " test/input/rename/input.js -c passes=2";
         exec(command, function(err, stdout, stderr) {
             if (err) throw err;
-            assert.strictEqual(stdout, "function f(x){return function(x){return x}(x)}\n");
+            assert.strictEqual(stdout, "function f(x){return function(x){return x+x}(x)}\n");
             done();
         });
     });

test/mocha/sourcemaps.js

@@ -1,10 +1,9 @@
 var assert = require("assert");
-var readFileSync = require("fs").readFileSync;
-var SourceMapConsumer = require("source-map").SourceMapConsumer;
+var fs = require("fs");
 var UglifyJS = require("../node");
 
 function read(path) {
-    return readFileSync(path, "utf8");
+    return fs.readFileSync(path, "utf8");
 }
 
 function source_map(code) {
@@ -44,7 +43,7 @@ function prepare_map(sourceMap) {
         }
     });
     if (result.error) throw result.error;
-    return new SourceMapConsumer(result.map);
+    return JSON.parse(result.map);
 }
 
 describe("sourcemaps", function() {
@@ -87,7 +86,7 @@ describe("sourcemaps", function() {
         });
         if (result.error) throw result.error;
         assert.strictEqual(result.code, code);
-        assert.strictEqual(result.map, '{"version":3,"sources":["0"],"names":["console","log"],"mappings":"AAAAA,QAAQC,IAAI","sourceRoot":"//foo.bar/"}');
+        assert.strictEqual(result.map, '{"version":3,"sourceRoot":"//foo.bar/","sources":["0"],"names":["console","log"],"mappings":"AAAAA,QAAQC,IAAI"}');
     });
     it("Should produce same source map with DOS or UNIX line endings", function() {
         var code = [
@@ -108,9 +107,9 @@ describe("sourcemaps", function() {
 
     describe("inSourceMap", function() {
         it("Should read the given string filename correctly when sourceMapIncludeSources is enabled", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-1236/simple.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-1236/simple.js"), {
                 sourceMap: {
-                    content: read("./test/input/issue-1236/simple.js.map"),
+                    content: read("test/input/issue-1236/simple.js.map"),
                     filename: "simple.min.js",
                     includeSources: true
                 }
@@ -122,7 +121,7 @@ describe("sourcemaps", function() {
             assert.equal(map.sourcesContent[0], 'let foo = x => "foo " + x;\nconsole.log(foo("bar"));');
         });
         it("Should process inline source map", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-520/input.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-520/input.js"), {
                 compress: { toplevel: true },
                 sourceMap: {
                     content: "inline",
@@ -131,10 +130,10 @@ describe("sourcemaps", function() {
                 }
             });
             if (result.error) throw result.error;
-            assert.strictEqual(result.code + "\n", readFileSync("test/input/issue-520/output.js", "utf8"));
+            assert.strictEqual(result.code + "\n", read("test/input/issue-520/output.js"));
         });
         it("Should warn for missing inline source map", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-1323/sample.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-1323/sample.js"), {
                 mangle: false,
                 sourceMap: {
                     content: "inline"
@@ -146,8 +145,8 @@ describe("sourcemaps", function() {
         });
         it("Should handle multiple input and inline source map", function() {
             var result = UglifyJS.minify([
-                read("./test/input/issue-520/input.js"),
-                read("./test/input/issue-1323/sample.js"),
+                read("test/input/issue-520/input.js"),
+                read("test/input/issue-1323/sample.js"),
             ], {
                 sourceMap: {
                     content: "inline",
@@ -163,7 +162,7 @@ describe("sourcemaps", function() {
             assert.deepEqual(result.warnings, [ "WARN: inline source map not found: 1" ]);
         });
         it("Should drop source contents for includeSources=false", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-520/input.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-520/input.js"), {
                 compress: false,
                 mangle: false,
                 sourceMap: {
@@ -186,7 +185,7 @@ describe("sourcemaps", function() {
             assert.ok(!("sourcesContent" in map));
         });
         it("Should parse the correct sourceMappingURL", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-3294/input.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-3294/input.js"), {
                 compress: { toplevel: true },
                 sourceMap: {
                     content: "inline",
@@ -195,10 +194,10 @@ describe("sourcemaps", function() {
                 }
             });
             if (result.error) throw result.error;
-            assert.strictEqual(result.code + "\n", readFileSync("test/input/issue-3294/output.js", "utf8"));
+            assert.strictEqual(result.code + "\n", read("test/input/issue-3294/output.js"));
         });
         it("Should work in presence of unrecognised annotations", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-3441/input.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-3441/input.js"), {
                 compress: false,
                 mangle: false,
                 sourceMap: {
@@ -230,7 +229,7 @@ describe("sourcemaps", function() {
             assert.strictEqual(code, "var a=function(n){return n};");
         });
         it("Should work with max_line_len", function() {
-            var result = UglifyJS.minify(read("./test/input/issue-505/input.js"), {
+            var result = UglifyJS.minify(read("test/input/issue-505/input.js"), {
                 compress: {
                     directives: false,
                 },
@@ -242,7 +241,7 @@ describe("sourcemaps", function() {
                 }
             });
             if (result.error) throw result.error;
-            assert.strictEqual(result.code, read("./test/input/issue-505/output.js"));
+            assert.strictEqual(result.code, read("test/input/issue-505/output.js"));
         });
         it("Should work with unicode characters", function() {
             var code = [
@@ -281,29 +280,33 @@ describe("sourcemaps", function() {
         it("Should copy over original sourcesContent", function() {
             var orig = get_map();
             var map = prepare_map(orig);
-            assert.equal(map.sourceContentFor("index.js"), orig.sourcesContent[0]);
+            assert.strictEqual(map.sources.length, 1);
+            assert.strictEqual(map.sources[0], "index.js");
+            assert.strictEqual(map.sourcesContent.length, 1);
+            assert.equal(map.sourcesContent[0], orig.sourcesContent[0]);
         });
         it("Should copy sourcesContent if sources are relative", function() {
             var relativeMap = get_map();
             relativeMap.sources = ['./index.js'];
             var map = prepare_map(relativeMap);
-            assert.notEqual(map.sourcesContent, null);
-            assert.equal(map.sourcesContent.length, 1);
-            assert.equal(map.sourceContentFor("index.js"), relativeMap.sourcesContent[0]);
+            assert.strictEqual(map.sources.length, 1);
+            assert.strictEqual(map.sources[0], "./index.js");
+            assert.strictEqual(map.sourcesContent.length, 1);
+            assert.equal(map.sourcesContent[0], relativeMap.sourcesContent[0]);
         });
         it("Should not have invalid mappings from inputSourceMap", function() {
             var map = prepare_map(get_map());
             // The original source has only 2 lines, check that mappings don't have more lines
             var msg = "Mapping should not have higher line number than the original file had";
-            map.eachMapping(function(mapping) {
-                assert.ok(mapping.originalLine <= 2, msg);
-            });
-            map.allGeneratedPositionsFor({
-                source: "index.js",
-                line: 1,
-                column: 1
-            }).forEach(function(pos) {
-                assert.ok(pos.line <= 2, msg);
+            var lines = map.mappings.split(/;/);
+            assert.ok(lines.length <= 2, msg);
+            var indices = [ 0, 0, 1, 0, 0];
+            lines.forEach(function(segments) {
+                indices[0] = 0;
+                segments.split(/,/).forEach(function(segment) {
+                    UglifyJS.vlq_decode(indices, segment);
+                    assert.ok(indices[2] <= 2, msg);
+                });
             });
         });
     });

test/node.js

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

test/ufuzz/index.js

@@ -772,6 +772,12 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
       case p++:
       case p++:
       case p++:
+        if (rng(16) == 0) {
+            var name = getVarName();
+            var fn = name + "." + getDotKey();
+            called[name] = true;
+            return name + " && " + "typeof " + fn + ' == "function" && --_calls_ >= 0 && ' + fn + "(" + createArgs(recurmax, stmtDepth, canThrow) + ")";
+        }
         var name = rng(3) == 0 ? getVarName() : "f" + rng(funcs + 2);
         called[name] = true;
         return "typeof " + name + ' == "function" && --_calls_ >= 0 && ' + name + "(" + createArgs(recurmax, stmtDepth, canThrow) + ")";

tools/node.js

@@ -15,13 +15,13 @@ exports.FILES = [
     require.resolve("./exports.js"),
 ];
 
-new Function("MOZ_SourceMap", "exports", function() {
+new Function("exports", function() {
     var code = exports.FILES.map(function(file) {
         return fs.readFileSync(file, "utf8");
     });
     code.push("exports.describe_ast = " + describe_ast.toString());
     return code.join("\n\n");
-}())(require("source-map"), exports);
+}())(exports);
 
 function describe_ast() {
     var out = OutputStream({ beautify: true });