v2.8.26

Account for comments when detecting property access in `tokenizer`.

fixes #1943

.github/ISSUE_TEMPLATE.md

@@ -1,19 +1,8 @@
-**Bug report or feature request?** 
-
-<!-- Note: sub-optimal but correct code is not a bug -->
-
-**ES5 or ES6+ input?** 
-
-<!-- Note: for ES6 see: https://github.com/mishoo/UglifyJS2/tree/harmony#harmony -->
-
-**`uglify-js` version (`uglifyjs -V`)**
-
-**JavaScript input - ideally as small as possible.**
-
-**The `uglifyjs` CLI command executed or `minify()` options used.**
-
-**JavaScript output produced and/or the error or warning.**
-
+- Bug report or feature request? <!-- Note: sub-optimal but correct code is not a bug -->
+- `uglify-js` version (`uglifyjs -V`)
+- JavaScript input - ideally as small as possible.
+- The `uglifyjs` CLI command executed or `minify()` options used.
+- An example of JavaScript output produced and/or the error or warning.
 <!--
     Note: the release version of uglify-js only supports ES5. Those wishing
     to minify ES6 should use the experimental harmony branch.

README.md

@@ -1,15 +1,20 @@
-UglifyJS 3
+UglifyJS 2
 ==========
 [![Build Status](https://travis-ci.org/mishoo/UglifyJS2.svg)](https://travis-ci.org/mishoo/UglifyJS2)
 
 UglifyJS is a JavaScript parser, minifier, compressor or beautifier toolkit.
 
+This page documents the command line utility.  For
+[API and internals documentation see my website](http://lisperator.net/uglifyjs/).
+There's also an
+[in-browser online demo](http://lisperator.net/uglifyjs/#demo) (for Firefox,
+Chrome and probably Safari).
+
 #### Note:
-- **`uglify-js@3.x` has a new API and CLI and is not backwards compatible with [`uglify-js@2.x`](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
-- **Documentation for UglifyJS `2.x` releases can be found [here](https://github.com/mishoo/UglifyJS2/tree/v2.x)**.
-- Release versions of `uglify-js` only support ECMAScript 5 (ES5). If you wish to minify
-ES2015+ (ES6+) code then please use the [harmony](#harmony) development branch.
-- Node 7 has a known performance regression and runs `uglify-js` twice as slow.
+- `uglify-js` only supports ECMAScript 5 (ES5).
+- Support for `const` is [present but incomplete](#support-for-const), and may not be
+  transformed properly.
+- Those wishing to minify ES2015+ (ES6+) should use the `npm` package [**uglify-es**](https://github.com/mishoo/UglifyJS2/tree/harmony).
 
 Install
 -------
@@ -25,24 +30,19 @@ From NPM for programmatic use:
 
     npm install uglify-js
 
-From Git:
-
-    git clone git://github.com/mishoo/UglifyJS2.git
-    cd UglifyJS2
-    npm link .
-
 Usage
 -----
 
     uglifyjs [input files] [options]
 
-UglifyJS can take multiple input files.  It's recommended that you pass the
+UglifyJS2 can take multiple input files.  It's recommended that you pass the
 input files first, then pass the options.  UglifyJS will parse input files
 in sequence and apply any compression options.  The files are parsed in the
 same global scope, that is, a reference from a file to some
 variable/function declared in another file will be matched properly.
 
-If no input file is specified, UglifyJS will read from STDIN.
+If you want to read from STDIN instead, pass a single dash instead of input
+files.
 
 If you wish to pass your options before the input files, separate the two with
 a double dash to prevent input files being used as option arguments:
@@ -52,53 +52,48 @@ a double dash to prevent input files being used as option arguments:
 The available options are:
 
 ```
-    -h, --help                  Print usage information.
-    -V, --version               Print version number.
-    -p, --parse <options>       Specify parser options:
-                                `acorn`  Use Acorn for parsing.
-                                `bare_returns`  Allow return outside of functions.
-                                                Useful when minifying CommonJS
-                                                modules and Userscripts that may
-                                                be anonymous function wrapped (IIFE)
-                                                by the .user.js engine `caller`.
-                                `expression`  Parse a single expression, rather than
-                                              a program (for parsing JSON).
-                                `spidermonkey`  Assume input files are SpiderMonkey
-                                                AST format (as JSON).
-    -c, --compress [options]    Enable compressor/specify compressor options:
-                                `pure_funcs`  List of functions that can be safely
-                                              removed when their return values are
-                                              not used.
-    -m, --mangle [options]      Mangle names/specify mangler options:
-                                `reserved`  List of names that should not be mangled.
-    --mangle-props [options]    Mangle properties/specify mangler options:
-                                `builtins`  Mangle property names that overlaps
-                                            with standard JavaScript globals.
-                                `debug`  Add debug prefix and suffix.
-                                `domprops`  Mangle property names that overlaps
-                                            with DOM properties.
-                                `keep_quoted`  Only mangle unquoted properies.
-                                `regex`  Only mangle matched property names.
-                                `reserved`  List of names that should not be mangled.
-    -b, --beautify [options]    Beautify output/specify output options:
-                                `beautify`  Enabled with `--beautify` by default.
-                                `preamble`  Preamble to prepend to the output. You
-                                            can use this to insert a comment, for
-                                            example for licensing information.
-                                            This will not be parsed, but the source
-                                            map will adjust for its presence.
-                                `quote_style`  Quote style:
-                                               0 - auto
-                                               1 - single
-                                               2 - double
-                                               3 - original
-                                `wrap_iife`  Wrap IIFEs in parenthesis. Note: you may
-                                             want to disable `negate_iife` under
-                                             compressor options.
-    -o, --output <file>         Output file path (default STDOUT). Specify `ast` or
-                                `spidermonkey` to write UglifyJS or SpiderMonkey AST
-                                as JSON to STDOUT respectively.
-    --comments [filter]         Preserve copyright comments in the output. By
+  --source-map                  Specify an output file where to generate source
+                                map.
+  --source-map-root             The path to the original source to be included
+                                in the source map.
+  --source-map-url              The path to the source map to be added in //#
+                                sourceMappingURL.  Defaults to the value passed
+                                with --source-map.
+  --source-map-include-sources  Pass this flag if you want to include the
+                                content of source files in the source map as
+                                sourcesContent property.
+  --source-map-inline           Write base64-encoded source map to the end of js output.
+  --in-source-map               Input source map, useful if you're compressing
+                                JS that was generated from some other original
+                                code. Specify "inline" if the source map is included
+                                inline with the sources.
+  --screw-ie8                   Use this flag if you don't wish to support
+                                Internet Explorer 6/7/8.
+                                By default UglifyJS will not try to be IE-proof.
+  --support-ie8                 Use this flag to support Internet Explorer 6/7/8.
+                                Equivalent to setting `screw_ie8: false` in `minify()`
+                                for `compress`, `mangle` and `output` options.
+  --expr                        Parse a single expression, rather than a
+                                program (for parsing JSON)
+  -p, --prefix                  Skip prefix for original filenames that appear
+                                in source maps. For example -p 3 will drop 3
+                                directories from file names and ensure they are
+                                relative paths. You can also specify -p
+                                relative, which will make UglifyJS figure out
+                                itself the relative paths between original
+                                sources, the source map and the output file.
+  -o, --output                  Output file (default STDOUT).
+  -b, --beautify                Beautify output/specify output options.
+  -m, --mangle                  Mangle names/pass mangler options.
+  -r, --reserved                Reserved names to exclude from mangling.
+  -c, --compress                Enable compressor/pass compressor options, e.g.
+                                `-c 'if_return=false,pure_funcs=["Math.pow","console.log"]'`
+                                Use `-c` with no argument to enable default compression
+                                options.
+  -d, --define                  Global definitions
+  -e, --enclose                 Embed everything in a big function, with a
+                                configurable parameter/argument list.
+  --comments                    Preserve copyright comments in the output. By
                                 default this works like Google Closure, keeping
                                 JSDoc-style comments that contain "@license" or
                                 "@preserve". You can optionally pass one of the
@@ -110,39 +105,54 @@ The available options are:
                                 kept when compression is on, because of dead
                                 code removal or cascading statements into
                                 sequences.
-    --config-file <file>        Read `minify()` options from JSON file.
-    -d, --define <expr>[=value] Global definitions.
-    --ie8                       Support non-standard Internet Explorer 8.
-                                Equivalent to setting `ie8: true` in `minify()`
-                                for `compress`, `mangle` and `output` options.
-                                By default UglifyJS will not try to be IE-proof.
-    --keep-fnames               Do not mangle/drop function names.  Useful for
-                                code relying on Function.prototype.name.
-    --name-cache                File to hold mangled name mappings.
-    --self                      Build UglifyJS as a library (implies --wrap UglifyJS)
-    --source-map [options]      Enable source map/specify source map options:
-                                `base`  Path to compute relative paths from input files.
-                                `content`  Input source map, useful if you're compressing
-                                           JS that was generated from some other original
-                                           code. Specify "inline" if the source map is
-                                           included within the sources.
-                                `filename`  Name and/or location of the output source.
-                                `includeSources`  Pass this flag if you want to include
-                                                  the content of source files in the
-                                                  source map as sourcesContent property.
-                                `root`  Path to the original source to be included in
-                                        the source map.
-                                `url`  If specified, path to the source map to append in
-                                       `//# sourceMappingURL`.
-    --stats                     Display operations run time on STDERR.
-    --toplevel                  Compress and/or mangle variables in toplevel scope.
-    --verbose                   Print diagnostic messages.
-    --warn                      Print warning messages.
-    --wrap <name>               Embed everything in a big function, making the
+  --preamble                    Preamble to prepend to the output.  You can use
+                                this to insert a comment, for example for
+                                licensing information.  This will not be
+                                parsed, but the source map will adjust for its
+                                presence.
+  --stats                       Display operations run time on STDERR.
+  --acorn                       Use Acorn for parsing.
+  --spidermonkey                Assume input files are SpiderMonkey AST format
+                                (as JSON).
+  --self                        Build itself (UglifyJS2) as a library (implies
+                                --wrap=UglifyJS --export-all)
+  --wrap                        Embed everything in a big function, making the
                                 “exports” and “global” variables available. You
                                 need to pass an argument to this option to
                                 specify the name that your module will take
                                 when included in, say, a browser.
+  --export-all                  Only used when --wrap, this tells UglifyJS to
+                                add code to automatically export all globals.
+  --lint                        Display some scope warnings
+  -v, --verbose                 Verbose
+  -V, --version                 Print version number and exit.
+  --noerr                       Don't throw an error for unknown options in -c,
+                                -b or -m.
+  --bare-returns                Allow return outside of functions.  Useful when
+                                minifying CommonJS modules and Userscripts that
+                                may be anonymous function wrapped (IIFE) by the
+                                .user.js engine `caller`.
+  --keep-fnames                 Do not mangle/drop function names.  Useful for
+                                code relying on Function.prototype.name.
+  --reserved-file               File containing reserved names
+  --reserve-domprops            Make (most?) DOM properties reserved for
+                                --mangle-props
+  --mangle-props                Mangle property names (default `0`). Set to
+                                `true` or `1` to mangle all property names. Set
+                                to `unquoted` or `2` to only mangle unquoted
+                                property names. Mode `2` also enables the
+                                `keep_quoted_props` beautifier option to
+                                preserve the quotes around property names and
+                                disables the `properties` compressor option to
+                                prevent rewriting quoted properties with dot
+                                notation. You can override these by setting
+                                them explicitly on the command line.
+  --mangle-regex                Only mangle property names matching the regex
+  --name-cache                  File to hold mangled names mappings
+  --pure-funcs                  Functions that can be safely removed if their
+                                return value is not used, e.g.
+                                `--pure-funcs Math.floor console.info`
+                                (requires `--compress`)
 ```
 
 Specify `--output` (`-o`) to declare the output file.  Otherwise the output
@@ -150,21 +160,25 @@ goes to STDOUT.
 
 ## Source map options
 
-UglifyJS can generate a source map file, which is highly useful for
+UglifyJS2 can generate a source map file, which is highly useful for
 debugging your compressed JavaScript.  To get a source map, pass
-`--source-map --output output.js` (source map will be written out to
-`output.js.map`).
+`--source-map output.js.map` (full path to the file where you want the
+source map dumped).
 
-Additionally you might need `--source-map root=<URL>` to pass the URL where
-the original files can be found.  Use `--source-map url=<URL>` to specify
-the URL where the source map can be found.
+Additionally you might need `--source-map-root` to pass the URL where the
+original files can be found.  In case you are passing full paths to input
+files to UglifyJS, you can use `--prefix` (`-p`) to specify the number of
+directories to drop from the path prefix when declaring files in the source
+map.
 
 For example:
 
     uglifyjs /home/doe/work/foo/src/js/file1.js \
              /home/doe/work/foo/src/js/file2.js \
-             -o foo.min.js -c -m \
-             --source-map base="/home/doe/work/foo/src",root="http://foo.com/src"
+             -o foo.min.js \
+             --source-map foo.min.js.map \
+             --source-map-root http://foo.com/src \
+             -p 5 -c -m
 
 The above will compress and mangle `file1.js` and `file2.js`, will drop the
 output in `foo.min.js` and the source map in `foo.min.js.map`.  The source
@@ -201,10 +215,10 @@ To enable the mangler you need to pass `--mangle` (`-m`).  The following
   (disabled by default).
 
 When mangling is enabled but you want to prevent certain names from being
-mangled, you can declare those names with `--mangle reserved` — pass a
+mangled, you can declare those names with `--reserved` (`-r`) — pass a
 comma-separated list of names.  For example:
 
-    uglifyjs ... -m reserved=[$,require,exports]
+    uglifyjs ... -m -r '$,require,exports'
 
 to prevent the `require`, `exports` and `$` names from being changed.
 
@@ -229,22 +243,39 @@ console.log(x.something());
 In the above code, `foo`, `bar`, `baz`, `moo` and `boo` will be replaced
 with single characters, while `something()` will be left as is.
 
-In order for this to be of any use, we avoid mangling standard JS names by
-default (`--mangle-props builtins` to override).
+In order for this to be of any use, we should avoid mangling standard JS
+names.  For instance, if your code would contain `x.length = 10`, then
+`length` becomes a candidate for mangling and it will be mangled throughout
+the code, regardless if it's being used as part of your own objects or
+accessing an array's length.  To avoid that, you can use `--reserved-file`
+to pass a filename that should contain the names to be excluded from
+mangling.  This file can be used both for excluding variable names and
+property names.  It could look like this, for example:
+
+```js
+{
+  "vars": [ "define", "require", ... ],
+  "props": [ "length", "prototype", ... ]
+}
+```
+
+`--reserved-file` can be an array of file names (either a single
+comma-separated argument, or you can pass multiple `--reserved-file`
+arguments) — in this case it will exclude names from all those files.
 
 A default exclusion file is provided in `tools/domprops.json` which should
 cover most standard JS and DOM properties defined in various browsers.  Pass
-`--mangle-props domprops` to disable this feature.
+`--reserve-domprops` to read that in.
 
 You can also use a regular expression to define which property names should be
-mangled.  For example, `--mangle-props regex=/^_/` will only mangle property
-names that start with an underscore.
+mangled.  For example, `--mangle-regex="/^_/"` will only mangle property names
+that start with an underscore.
 
 When you compress multiple files using this option, in order for them to
 work together in the end we need to ensure somehow that one property gets
-mangled to the same name in all of them.  For this, pass `--name-cache filename.json`
-and UglifyJS will maintain these mappings in a file which can then be reused.
-It should be initially empty.  Example:
+mangled to the same name in all of them.  For this, pass `--name-cache
+filename.json` and UglifyJS will maintain these mappings in a file which can
+then be reused.  It should be initially empty.  Example:
 
 ```
 rm -f /tmp/cache.json  # start fresh
@@ -258,26 +289,26 @@ of mangled property names.
 Using the name cache is not necessary if you compress all your files in a
 single call to UglifyJS.
 
-#### Mangling unquoted names (`--mangle-props keep_quoted`)
+#### Mangling unquoted names (`--mangle-props=unquoted` or `--mangle-props=2`)
 
 Using quoted property name (`o["foo"]`) reserves the property name (`foo`)
 so that it is not mangled throughout the entire script even when used in an
 unquoted style (`o.foo`). Example:
 
 ```
-$ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props keep_quoted -mc
-var o={foo:1,a:3};o.foo+=o.a,console.log(o.foo);
+$ echo 'var o={"foo":1, bar:3}; o.foo += o.bar; console.log(o.foo);' | uglifyjs --mangle-props=2 -mc
+var o={"foo":1,a:3};o.foo+=o.a,console.log(o.foo);
 ```
 
 #### Debugging property name mangling
 
-You can also pass `--mangle-props debug` in order to mangle property names
+You can also pass `--mangle-props-debug` in order to mangle property names
 without completely obscuring them. For example the property `o.foo`
 would mangle to `o._$foo$_` with this option. This allows property mangling
 of a large codebase while still being able to debug the code and identify
 where mangling is breaking things.
 
-You can also pass a custom suffix using `--mangle-props debug=XYZ`. This would then
+You can also pass a custom suffix using `--mangle-props-debug=XYZ`. This would then
 mangle `o.foo` to `o._$foo$XYZ_`. You can change this each time you compile a
 script to identify how a property got mangled. One technique is to pass a
 random number on every compile to simulate mangling changing with different
@@ -405,13 +436,19 @@ to set `true`; it's effectively a shortcut for `foo=true`).
   compressor from discarding function names.  Useful for code relying on
   `Function.prototype.name`. See also: the `keep_fnames` [mangle option](#mangle).
 
-- `passes` -- default `1`. Number of times to run compress. Use an
-  integer argument larger than 1 to further reduce code size in some cases.
-  Note: raising the number of passes will increase uglify compress time.
+- `passes` -- default `1`. Number of times to run compress with a maximum of 3.
+  In some cases more than one pass leads to further compressed code.  Keep in
+  mind more passes will take more time.
 
 - `keep_infinity` -- default `false`. Pass `true` to prevent `Infinity` from
   being compressed into `1/0`, which may cause performance issues on Chrome.
 
+- `side_effects` -- default `false`. Pass `true` to potentially drop functions
+marked as "pure".  A function call is marked as "pure" if a comment annotation
+`/*@__PURE__*/` or `/*#__PURE__*/` immediately precedes the call. For example:
+`/*@__PURE__*/foo()`;
+
+
 ### The `unsafe` option
 
 It enables some transformations that *might* break code logic in certain
@@ -465,6 +502,8 @@ code as usual.  The build will contain the `const` declarations if you use
 them. If you are targeting < ES6 environments which does not support `const`,
 using `var` with `reduce_vars` (enabled by default) should suffice.
 
+<a name="codegen-options"></a>
+
 #### Conditional compilation, API
 You can also use conditional compilation via the programmatic API. With the difference that the
 property name is `global_defs` and is a compressor property:
@@ -490,21 +529,21 @@ can pass additional arguments that control the code output:
   Passing `-b` will set this to true, but you might need to pass `-b` even
   when you want to generate minified code, in order to specify additional
   arguments, so you can use `-b beautify=false` to override it.
-- `indent_level` (default 4)
-- `indent_start` (default 0) -- prefix all lines by that many spaces
-- `quote_keys` (default `false`) -- pass `true` to quote all keys in literal
+- `indent-level` (default 4)
+- `indent-start` (default 0) -- prefix all lines by that many spaces
+- `quote-keys` (default `false`) -- pass `true` to quote all keys in literal
   objects
-- `space_colon` (default `true`) -- insert a space after the colon signs
-- `ascii_only` (default `false`) -- escape Unicode characters in strings and
+- `space-colon` (default `true`) -- insert a space after the colon signs
+- `ascii-only` (default `false`) -- escape Unicode characters in strings and
   regexps (affects directives with non-ascii characters becoming invalid)
-- `inline_script` (default `false`) -- escape the slash in occurrences of
+- `inline-script` (default `false`) -- escape the slash in occurrences of
   `</script` in strings
 - `width` (default 80) -- only takes effect when beautification is on, this
   specifies an (orientative) line width that the beautifier will try to
   obey.  It refers to the width of the line text (excluding indentation).
   It doesn't work very well currently, but it does make the code generated
   by UglifyJS more readable.
-- `max_line_len` (default 32000) -- maximum line length (for uglified code)
+- `max-line-len` (default 32000) -- maximum line length (for uglified code)
 - `bracketize` (default `false`) -- always insert brackets in `if`, `for`,
   `do`, `while` or `with` statements, even if their body is a single
   statement.
@@ -525,9 +564,6 @@ can pass additional arguments that control the code output:
   - `3` -- always use the original quotes
 - `keep_quoted_props` (default `false`) -- when turned on, prevents stripping
   quotes from property names in object literals.
-- `ecma` (default `5`) -- set output printing mode.  This will only change the
-  output in direct control of the beautifier.  Non-compatible features in the
-  abstract syntax tree will still be outputted as is.
 
 ### Keeping copyright notices or other comments
 
@@ -535,8 +571,8 @@ You can pass `--comments` to retain certain comments in the output.  By
 default it will keep JSDoc-style comments that contain "@preserve",
 "@license" or "@cc_on" (conditional compilation for IE).  You can pass
 `--comments all` to keep all the comments, or a valid JavaScript regexp to
-keep only comments that match this regexp.  For example `--comments /^!/`
-will keep comments like `/*! Copyright Notice */`.
+keep only comments that match this regexp.  For example `--comments
+'/foo|bar/'` will keep only comments that contain "foo" or "bar".
 
 Note, however, that there might be situations where comments are lost.  For
 example:
@@ -559,7 +595,7 @@ needs to be kept in the output) are comments attached to toplevel nodes.
 
 ## Support for the SpiderMonkey AST
 
-UglifyJS has its own abstract syntax tree format; for
+UglifyJS2 has its own abstract syntax tree format; for
 [practical reasons](http://lisperator.net/blog/uglifyjs-why-not-switching-to-spidermonkey-ast/)
 we can't easily change to using the SpiderMonkey AST internally.  However,
 UglifyJS now has a converter which can import a SpiderMonkey AST.
@@ -569,22 +605,54 @@ SpiderMonkey AST.  It has a small CLI utility that parses one file and dumps
 the AST in JSON on the standard output.  To use UglifyJS to mangle and
 compress that:
 
-    acorn file.js | uglifyjs -p spidermonkey -m -c
+    acorn file.js | uglifyjs --spidermonkey -m -c
 
-The `-p spidermonkey` option tells UglifyJS that all input files are not
+The `--spidermonkey` option tells UglifyJS that all input files are not
 JavaScript, but JS code described in SpiderMonkey AST in JSON.  Therefore we
 don't use our own parser in this case, but just transform that AST into our
 internal AST.
 
 ### Use Acorn for parsing
 
-More for fun, I added the `-p acorn` option which will use Acorn to do all
+More for fun, I added the `--acorn` option which will use Acorn to do all
 the parsing.  If you pass this option, UglifyJS will `require("acorn")`.
 
 Acorn is really fast (e.g. 250ms instead of 380ms on some 650K code), but
 converting the SpiderMonkey tree that Acorn produces takes another 150ms so
 in total it's a bit more than just using UglifyJS's own parser.
 
+### Using UglifyJS to transform SpiderMonkey AST
+
+Now you can use UglifyJS as any other intermediate tool for transforming
+JavaScript ASTs in SpiderMonkey format.
+
+Example:
+
+```javascript
+function uglify(ast, options, mangle) {
+  // Conversion from SpiderMonkey AST to internal format
+  var uAST = UglifyJS.AST_Node.from_mozilla_ast(ast);
+
+  // Compression
+  uAST.figure_out_scope();
+  uAST = UglifyJS.Compressor(options).compress(uAST);
+
+  // Mangling (optional)
+  if (mangle) {
+    uAST.figure_out_scope();
+    uAST.compute_char_frequency();
+    uAST.mangle_names();
+  }
+
+  // Back-conversion to SpiderMonkey AST
+  return uAST.to_mozilla_ast();
+}
+```
+
+Check out
+[original blog post](http://rreverser.com/using-mozilla-ast-with-uglifyjs/)
+for details.
+
 API Reference
 -------------
 
@@ -594,73 +662,107 @@ like this:
 var UglifyJS = require("uglify-js");
 ```
 
-There is a single toplevel function, `minify(files, options)`, which will
-performs all the steps in a configurable manner.
+It exports a lot of names, but I'll discuss here the basics that are needed
+for parsing, mangling and compressing a piece of code.  The sequence is (1)
+parse, (2) compress, (3) mangle, (4) generate output code.
+
+### The simple way
+
+There's a single toplevel function which combines all the steps.  If you
+don't need additional customization, you might want to go with `minify`.
 Example:
 ```javascript
-var result = UglifyJS.minify("var b = function() {};");
-console.log(result.code);  // minified output
-console.log(result.error); // runtime error
+var result = UglifyJS.minify("/path/to/file.js");
+console.log(result.code); // minified output
+// if you need to pass code instead of file name
+var result = UglifyJS.minify("var b = function () {};", {fromString: true});
 ```
 
 You can also compress multiple files:
 ```javascript
-var result = UglifyJS.minify({
-  "file1.js": "var a = function() {};",
-  "file2.js": "var b = function() {};"
-});
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ]);
 console.log(result.code);
 ```
 
 To generate a source map:
 ```javascript
-var result = UglifyJS.minify({"file1.js": "var a = function() {};"}, {
-  sourceMap: {
-    filename: "out.js",
-    url: "out.js.map"
-  }
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ], {
+	outSourceMap: "out.js.map"
 });
 console.log(result.code); // minified output
-console.log(result.map);  // source map
+console.log(result.map);
+```
+
+To generate a source map with the fromString option, you can also use an object:
+```javascript
+var result = UglifyJS.minify({"file1.js": "var a = function () {};"}, {
+  outSourceMap: "out.js.map",
+  outFileName: "out.js",
+  fromString: true
+});
 ```
 
 Note that the source map is not saved in a file, it's just returned in
-`result.map`.  The value passed for `sourceMap.url` is only used to set
+`result.map`.  The value passed for `outSourceMap` is only used to set
 `//# sourceMappingURL=out.js.map` in `result.code`. The value of
-`filename` is only used to set `file` attribute (see [the spec][sm-spec])
-in source map file.
+`outFileName` is only used to set `file` attribute in source map file.
 
-You can set option `sourceMap.url` to be `"inline"` and source map will
+The `file` attribute in the source map (see [the spec][sm-spec]) will
+use `outFileName` firstly, if it's falsy, then will be deduced from
+`outSourceMap` (by removing `'.map'`).
+
+You can set option `sourceMapInline` to be `true` and source map will
 be appended to code.
 
 You can also specify sourceRoot property to be included in source map:
 ```javascript
-var result = UglifyJS.minify({"file1.js": "var a = function() {};"}, {
-  sourceMap: {
-    root: "http://example.com/src",
-    url: "out.js.map"
-  }
+var result = UglifyJS.minify([ "file1.js", "file2.js", "file3.js" ], {
+	outSourceMap: "out.js.map",
+	sourceRoot: "http://example.com/src"
 });
 ```
 
 If you're compressing compiled JavaScript and have a source map for it, you
-can use `sourceMap.content`:
+can use the `inSourceMap` argument:
 ```javascript
-var result = UglifyJS.minify({"compiled.js": "compiled code"}, {
-  sourceMap: {
-    content: "content from compiled.js.map",
-    url: "minified.js.map"
-  }
+var result = UglifyJS.minify("compiled.js", {
+	inSourceMap: "compiled.js.map",
+	outSourceMap: "minified.js.map"
 });
 // same as before, it returns `code` and `map`
 ```
 
-If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.url`.
+If your input source map is not in a file, you can pass it in as an object
+using the `inSourceMap` argument:
+
+```javascript
+var result = UglifyJS.minify("compiled.js", {
+	inSourceMap: JSON.parse(my_source_map_string),
+	outSourceMap: "minified.js.map"
+});
+```
+
+The `inSourceMap` is only used if you also request `outSourceMap` (it makes
+no sense otherwise).
+
+To set the source map url, use the `sourceMapUrl` option.
+If you're using the X-SourceMap header instead, you can just set the `sourceMapUrl` option to false.
+Defaults to outSourceMap:
+
+```javascript
+var result = UglifyJS.minify([ "file1.js" ], {
+  outSourceMap: "out.js.map",
+  sourceMapUrl: "localhost/out.js.map"
+});
+```
 
 Other options:
 
 - `warnings` (default `false`) — pass `true` to display compressor warnings.
 
+- `fromString` (default `false`) — if you pass `true` then you can pass
+  JavaScript source code, rather than file names.
+
 - `mangle` (default `true`) — pass `false` to skip mangling names, or pass
   an object to specify mangling options (see below).
 
@@ -668,18 +770,18 @@ Other options:
   mangle property options.
 
 - `output` (default `null`) — pass an object if you wish to specify
-  additional [output options](#beautifier-options).  The defaults are optimized
+  additional [output options][codegen].  The defaults are optimized
   for best compression.
 
 - `compress` (default `{}`) — pass `false` to skip compressing entirely.
-  Pass an object to specify custom [compressor options](#compressor-options).
+  Pass an object to specify custom [compressor options][compressor].
 
 - `parse` (default {}) — pass an object if you wish to specify some
-  additional [parser options](#the-parser).
+  additional [parser options][parser]. (not all options available... see below)
 
 ##### mangle
 
- - `reserved` - pass an array of identifiers that should be excluded from mangling
+ - `except` - pass an array of identifiers that should be excluded from mangling
 
  - `toplevel` — mangle names declared in the toplevel scope (disabled by
   default).
@@ -704,36 +806,187 @@ Other options:
   UglifyJS.minify("tst.js").code;
   // 'function funcName(a,n){}var globalVar;'
 
-  UglifyJS.minify("tst.js", { mangle: { reserved: ['firstLongName'] } }).code;
+  UglifyJS.minify("tst.js", { mangle: { except: ['firstLongName'] } }).code;
   // 'function funcName(firstLongName,a){}var globalVar;'
 
   UglifyJS.minify("tst.js", { mangle: { toplevel: true } }).code;
   // 'function n(n,a){}var a;'
   ```
 
-##### mangle.properties options
+##### mangleProperties options
 
- - `regex` — Pass a RegExp to only mangle certain names
- - `keep_quoted` — Only mangle unquoted property names
- - `debug` — Mangle names with the original name still present. Defaults to `false`.
-   Pass an empty string to enable, or a non-empty string to set the suffix.
+ - `regex` — Pass a RegExp to only mangle certain names (maps to the `--mangle-regex` CLI arguments option)
+ - `ignore_quoted` – Only mangle unquoted property names (maps to the `--mangle-props 2` CLI arguments option)
+ - `debug` – Mangle names with the original name still present (maps to the `--mangle-props-debug` CLI arguments option). Defaults to `false`. Pass an empty string to enable, or a non-empty string to set the suffix.
+
+We could add more options to `UglifyJS.minify` — if you need additional
+functionality please suggest!
+
+### The hard way
+
+Following there's more detailed API info, in case the `minify` function is
+too simple for your needs.
+
+#### The parser
+```javascript
+var toplevel_ast = UglifyJS.parse(code, options);
+```
+
+`options` is optional and if present it must be an object.  The following
+properties are available:
+
+- `strict` — disable automatic semicolon insertion and support for trailing
+  comma in arrays and objects
+- `bare_returns` — Allow return outside of functions. (maps to the
+  `--bare-returns` CLI arguments option and available to `minify` `parse`
+  other options object)
+- `filename` — the name of the file where this code is coming from
+- `toplevel` — a `toplevel` node (as returned by a previous invocation of
+  `parse`)
+
+The last two options are useful when you'd like to minify multiple files and
+get a single file as the output and a proper source map.  Our CLI tool does
+something like this:
+```javascript
+var toplevel = null;
+files.forEach(function(file){
+	var code = fs.readFileSync(file, "utf8");
+	toplevel = UglifyJS.parse(code, {
+		filename: file,
+		toplevel: toplevel
+	});
+});
+```
+
+After this, we have in `toplevel` a big AST containing all our files, with
+each token having proper information about where it came from.
+
+#### Scope information
+
+UglifyJS contains a scope analyzer that you need to call manually before
+compressing or mangling.  Basically it augments various nodes in the AST
+with information about where is a name defined, how many times is a name
+referenced, if it is a global or not, if a function is using `eval` or the
+`with` statement etc.  I will discuss this some place else, for now what's
+important to know is that you need to call the following before doing
+anything with the tree:
+```javascript
+toplevel.figure_out_scope()
+```
+
+#### Compression
+
+Like this:
+```javascript
+var compressor = UglifyJS.Compressor(options);
+var compressed_ast = compressor.compress(toplevel);
+```
+
+The `options` can be missing.  Available options are discussed above in
+“Compressor options”.  Defaults should lead to best compression in most
+scripts.
+
+The compressor is destructive, so don't rely that `toplevel` remains the
+original tree.
+
+#### Mangling
+
+After compression it is a good idea to call again `figure_out_scope` (since
+the compressor might drop unused variables / unreachable code and this might
+change the number of identifiers or their position).  Optionally, you can
+call a trick that helps after Gzip (counting character frequency in
+non-mangleable words).  Example:
+```javascript
+compressed_ast.figure_out_scope();
+compressed_ast.compute_char_frequency();
+compressed_ast.mangle_names();
+```
+
+#### Generating output
+
+AST nodes have a `print` method that takes an output stream.  Essentially,
+to generate code you do this:
+```javascript
+var stream = UglifyJS.OutputStream(options);
+compressed_ast.print(stream);
+var code = stream.toString(); // this is your minified code
+```
+
+or, for a shortcut you can do:
+```javascript
+var code = compressed_ast.print_to_string(options);
+```
+
+As usual, `options` is optional.  The output stream accepts a lot of options,
+most of them documented above in section “Beautifier options”.  The two
+which we care about here are `source_map` and `comments`.
+
+#### Keeping comments in the output
+
+In order to keep certain comments in the output you need to pass the
+`comments` option.  Pass a RegExp (as string starting and closing with `/`
+or pass a RegExp object), a boolean or a function.  Stringified options
+`all` and `some` can be passed too, where `some` behaves like it's cli
+equivalent `--comments` without passing a value. If you pass a RegExp,
+only those comments whose body matches the RegExp will be kept.  Note that body
+means without the initial `//` or `/*`.  If you pass a function, it will be
+called for every comment in the tree and will receive two arguments: the
+node that the comment is attached to, and the comment token itself.
+
+The comment token has these properties:
+
+- `type`: "comment1" for single-line comments or "comment2" for multi-line
+  comments
+- `value`: the comment body
+- `pos` and `endpos`: the start/end positions (zero-based indexes) in the
+  original code where this comment appears
+- `line` and `col`: the line and column where this comment appears in the
+  original code
+- `file` — the file name of the original file
+- `nlb` — true if there was a newline before this comment in the original
+  code, or if this comment contains a newline.
+
+Your function should return `true` to keep the comment, or a falsy value
+otherwise.
+
+#### Generating a source mapping
+
+You need to pass the `source_map` argument when calling `print`.  It needs
+to be a `SourceMap` object (which is a thin wrapper on top of the
+[source-map][source-map] library).
+
+Example:
+```javascript
+var source_map = UglifyJS.SourceMap(source_map_options);
+var stream = UglifyJS.OutputStream({
+	...
+	source_map: source_map
+});
+compressed_ast.print(stream);
+
+var code = stream.toString();
+var map = source_map.toString(); // json output for your source map
+```
+
+The `source_map_options` (optional) can contain the following properties:
+
+- `file`: the name of the JavaScript output file that this mapping refers to
+- `root`: the `sourceRoot` property (see the [spec][sm-spec])
+- `orig`: the "original source map", handy when you compress generated JS
+  and want to map the minified output back to the original code where it
+  came from.  It can be simply a string in JSON, or a JSON object containing
+  the original source map.
 
   [acorn]: https://github.com/ternjs/acorn
-  [sm-spec]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k
+  [source-map]: https://github.com/mozilla/source-map
+  [sm-spec]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
+  [codegen]: http://lisperator.net/uglifyjs/codegen
+  [compressor]: http://lisperator.net/uglifyjs/compress
+  [parser]: http://lisperator.net/uglifyjs/parser
 
-#### Harmony
+#### Support for `const`
 
-If you wish to use the experimental [harmony](https://github.com/mishoo/UglifyJS2/commits/harmony)
-branch to minify ES2015+ (ES6+) code please use the following in your `package.json` file:
-
-```
-"uglify-js": "git+https://github.com/mishoo/UglifyJS2.git#harmony"
-```
-
-or to directly install the experimental harmony version of uglify:
-
-```
-npm install --save-dev uglify-js@github:mishoo/UglifyJS2#harmony
-```
-
-See [#448](https://github.com/mishoo/UglifyJS2/issues/448) for additional details.
+`const` in `uglify-js@2.x` has function scope and as such behaves much like
+`var` - unlike `const` in ES2015 (ES6) which has block scope. It is recommended
+to avoid using `const` for this reason as it will have undefined behavior when
+run on an ES2015 compatible browser.

bin/extract-props.js

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

bin/uglifyjs

@@ -3,382 +3,633 @@
 
 "use strict";
 
-// workaround for tty output truncation upon process.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");
-var path = require("path");
-var program = require("commander");
 var UglifyJS = require("../tools/node");
+var sys = require("util");
+var yargs = require("yargs");
+var fs = require("fs");
+var path = require("path");
+var acorn;
+var screw_ie8 = true;
+var ARGS = yargs
+    .usage("$0 input1.js [input2.js ...] [options]\n\
+Use a single dash to read input from the standard input.\
+\n\n\
+NOTE: by default there is no mangling/compression.\n\
+Without [options] it will simply parse input files and dump the AST\n\
+with whitespace and comments discarded.  To achieve compression and\n\
+mangling you need to use `-c` and `-m`.\
+")
+    .describe("source-map", "Specify an output file where to generate source map.")
+    .describe("source-map-root", "The path to the original source to be included in the source map.")
+    .describe("source-map-url", "The path to the source map to be added in //# sourceMappingURL.  Defaults to the value passed with --source-map.")
+    .describe("source-map-inline", "Write base64-encoded source map to the end of js output.  Disabled by default")
+    .describe("source-map-include-sources", "Pass this flag if you want to include the content of source files in the source map as sourcesContent property.")
+    .describe("in-source-map", "Input source map, useful if you're compressing JS that was generated from some other original code.")
+    .describe("screw-ie8", "Do not support Internet Explorer 6/7/8. This flag is enabled by default.")
+    .describe("support-ie8", "Support non-standard Internet Explorer 6/7/8 javascript.")
+    .describe("expr", "Parse a single expression, rather than a program (for parsing JSON)")
+    .describe("p", "Skip prefix for original filenames that appear in source maps. \
+For example -p 3 will drop 3 directories from file names and ensure they are relative paths. \
+You can also specify -p relative, which will make UglifyJS figure out itself the relative paths between original sources, \
+the source map and the output file.")
+    .describe("o", "Output file (default STDOUT).")
+    .describe("b", "Beautify output/specify output options.")
+    .describe("m", "Mangle names/pass mangler options.")
+    .describe("r", "Reserved names to exclude from mangling.")
+    .describe("c", "Enable compressor/pass compressor options. \
+Pass options like -c hoist_vars=false,if_return=false. \
+Use -c with no argument to use the default compression options.")
+    .describe("d", "Global definitions")
+    .describe("e", "Embed everything in a big function, with a configurable parameter/argument list.")
 
-var skip_keys = [ "cname", "enclosed", "parent_scope", "scope", "thedef", "uses_eval", "uses_with" ];
-var files = {};
-var options = {
-    compress: false,
-    mangle: false
-};
-program._name = info.name;
-program.version(info.version);
-program.parseArgv = program.parse;
-program.parse = undefined;
-program.option("-p, --parse <options>", "Specify parser options.", parse_js("parse", true));
-program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js("compress", true));
-program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js("mangle", true));
-program.option("--mangle-props [options]", "Mangle properties/specify mangler options.", parse_js("mangle-props", true));
-program.option("-b, --beautify [options]", "Beautify output/specify output options.", parse_js("beautify", true));
-program.option("-o, --output <file>", "Output file (default STDOUT).");
-program.option("--comments [filter]", "Preserve copyright comments in the output.");
-program.option("--config-file <file>", "Read minify() options from JSON file.");
-program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
-program.option("--ie8", "Support non-standard Internet Explorer 8.");
-program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
-program.option("--name-cache <file>", "File to hold mangled name mappings.");
-program.option("--self", "Build UglifyJS as a library (implies --wrap UglifyJS)");
-program.option("--source-map [options]", "Enable source map/specify source map options.", parse_source_map());
-program.option("--stats", "Display operations run time on STDERR.")
-program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
-program.option("--verbose", "Print diagnostic messages.");
-program.option("--warn", "Print warning messages.");
-program.option("--wrap <name>", "Embed everything as a function with “exports” corresponding to “name” globally.");
-program.arguments("[files...]").parseArgv(process.argv);
-if (program.configFile) {
-    options = JSON.parse(read_file(program.configFile));
+    .describe("comments", "Preserve copyright comments in the output. \
+By default this works like Google Closure, keeping JSDoc-style comments that contain \"@license\" or \"@preserve\". \
+You can optionally pass one of the following arguments to this flag:\n\
+- \"all\" to keep all comments\n\
+- a valid JS RegExp like `/foo/`or `/^!/` to keep only matching comments.\n\
+\
+Note that currently not *all* comments can be kept when compression is on, \
+because of dead code removal or cascading statements into sequences.")
+
+    .describe("preamble", "Preamble to prepend to the output.  You can use this to insert a \
+comment, for example for licensing information.  This will not be \
+parsed, but the source map will adjust for its presence.")
+
+    .describe("stats", "Display operations run time on STDERR.")
+    .describe("acorn", "Use Acorn for parsing.")
+    .describe("spidermonkey", "Assume input files are SpiderMonkey AST format (as JSON).")
+    .describe("self", "Build itself (UglifyJS2) as a library (implies --wrap=UglifyJS --export-all)")
+    .describe("wrap", "Embed everything in a big function, making the “exports” and “global” variables available. \
+You need to pass an argument to this option to specify the name that your module will take when included in, say, a browser.")
+    .describe("export-all", "Only used when --wrap, this tells UglifyJS to add code to automatically export all globals.")
+    .describe("lint", "Display some scope warnings")
+    .describe("v", "Verbose")
+    .describe("V", "Print version number and exit.")
+    .describe("noerr", "Don't throw an error for unknown options in -c, -b or -m.")
+    .describe("bare-returns", "Allow return outside of functions.  Useful when minifying CommonJS modules.")
+    .describe("keep-fnames", "Do not mangle/drop function names.  Useful for code relying on Function.prototype.name.")
+    .describe("quotes", "Quote style (0 - auto, 1 - single, 2 - double, 3 - original)")
+    .describe("reserved-file", "File containing reserved names")
+    .describe("reserve-domprops", "Make (most?) DOM properties reserved for --mangle-props")
+    .describe("mangle-props", "Mangle property names (0 - disabled, 1 - mangle all properties, 2 - mangle unquoted properies)")
+    .describe("mangle-regex", "Only mangle property names matching the regex")
+    .describe("name-cache", "File to hold mangled names mappings")
+    .describe("pure-funcs", "List of functions that can be safely removed if their return value is not used")
+    .describe("dump-spidermonkey-ast", "Dump SpiderMonkey AST to stdout.")
+    .describe("wrap-iife", "Wrap IIFEs in parenthesis. Note: this disables the negate_iife compression option")
+
+    .alias("p", "prefix")
+    .alias("o", "output")
+    .alias("v", "verbose")
+    .alias("b", "beautify")
+    .alias("m", "mangle")
+    .alias("c", "compress")
+    .alias("d", "define")
+    .alias("r", "reserved")
+    .alias("V", "version")
+    .alias("e", "enclose")
+    .alias("q", "quotes")
+
+    .string("source-map")
+    .string("source-map-root")
+    .string("source-map-url")
+    .string("b")
+    .string("beautify")
+    .string("m")
+    .string("mangle")
+    .string("mangle-props-debug")
+    .string("c")
+    .string("compress")
+    .string("d")
+    .string("define")
+    .string("e")
+    .string("enclose")
+    .string("comments")
+    .string("wrap")
+    .string("p")
+    .string("prefix")
+    .string("name-cache")
+
+    .array("reserved-file")
+    .array("pure-funcs")
+
+    .boolean("expr")
+    .boolean("source-map-inline")
+    .boolean("source-map-include-sources")
+    .boolean("screw-ie8")
+    .boolean("support-ie8")
+    .boolean("export-all")
+    .boolean("self")
+    .boolean("v")
+    .boolean("verbose")
+    .boolean("stats")
+    .boolean("acorn")
+    .boolean("spidermonkey")
+    .boolean("dump-spidermonkey-ast")
+    .boolean("lint")
+    .boolean("V")
+    .boolean("version")
+    .boolean("noerr")
+    .boolean("bare-returns")
+    .boolean("keep-fnames")
+    .boolean("reserve-domprops")
+    .boolean("wrap-iife")
+
+    .wrap(80)
+
+    .argv
+;
+
+normalize(ARGS);
+
+if (ARGS.noerr) {
+    UglifyJS.DefaultsError.croak = function(msg, defs) {
+        print_error("WARN: " + msg);
+    };
 }
-if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
-    fatal("ERROR: cannot write source map to STDOUT");
+
+if (ARGS.version || ARGS.V) {
+    var json = require("../package.json");
+    print(json.name + ' ' + json.version);
+    process.exit(0);
 }
-[
-    "compress",
-    "ie8",
-    "mangle",
-    "sourceMap",
-    "toplevel",
-    "wrap"
-].forEach(function(name) {
-    if (name in program) {
-        options[name] = program[name];
-    }
+
+if (ARGS.ast_help) {
+    var desc = UglifyJS.describe_ast();
+    print(typeof desc == "string" ? desc : JSON.stringify(desc, null, 2));
+    process.exit(0);
+}
+
+if (ARGS.h || ARGS.help) {
+    print(yargs.help());
+    process.exit(0);
+}
+
+if (ARGS.acorn) {
+    acorn = require("acorn");
+}
+
+var COMPRESS = getOptions("c", true);
+var MANGLE = getOptions("m", true);
+var BEAUTIFY = getOptions("b", true);
+var RESERVED = null;
+
+if (ARGS.reserved_file) ARGS.reserved_file.forEach(function(filename){
+    RESERVED = UglifyJS.readReservedFile(filename, RESERVED);
 });
-if (program.beautify) {
-    options.output = typeof program.beautify == "object" ? program.beautify : {};
-    if (!("beautify" in options.output)) {
-        options.output.beautify = true;
-    }
+
+if (ARGS.reserve_domprops) {
+    RESERVED = UglifyJS.readDefaultReservedFile(RESERVED);
 }
-if (program.comments) {
-    if (typeof options.output != "object") options.output = {};
-    options.output.comments = typeof program.comments == "string" ? program.comments : "some";
+
+if (ARGS.d) {
+    if (COMPRESS) COMPRESS.global_defs = getOptions("d");
 }
-if (program.define) {
-    if (typeof options.compress != "object") options.compress = {};
-    if (typeof options.compress.global_defs != "object") options.compress.global_defs = {};
-    for (var expr in program.define) {
-        options.compress.global_defs[expr] = program.define[expr];
-    }
+
+if (ARGS.pure_funcs) {
+    if (COMPRESS) COMPRESS.pure_funcs = ARGS.pure_funcs;
 }
-if (program.keepFnames) {
-    options.keep_fnames = true;
+
+if (ARGS.r) {
+    if (MANGLE) MANGLE.except = ARGS.r.replace(/^\s+|\s+$/g).split(/\s*,+\s*/);
 }
-if (program.mangleProps) {
-    if (program.mangleProps.domprops) {
-        delete program.mangleProps.domprops;
-    } else {
-        if (typeof program.mangleProps != "object") program.mangleProps = {};
-        if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
-        require("../tools/domprops").forEach(function(name) {
-            UglifyJS._push_uniq(program.mangleProps.reserved, name);
-        });
-    }
-    if (typeof options.mangle != "object") options.mangle = {};
-    options.mangle.properties = program.mangleProps;
+
+if (RESERVED && MANGLE) {
+    if (!MANGLE.except) MANGLE.except = RESERVED.vars;
+    else MANGLE.except = MANGLE.except.concat(RESERVED.vars);
 }
-var cache;
-if (program.nameCache) {
-    cache = JSON.parse(read_file(program.nameCache, "{}"));
-    if (options.mangle) {
-        if (typeof options.mangle != "object") options.mangle = {};
-        options.mangle.cache = to_cache("vars");
-        if (options.mangle.properties) {
-            if (typeof options.mangle.properties != "object") options.mangle.properties = {};
-            options.mangle.properties.cache = to_cache("props");
-        }
-    }
+
+function readNameCache(key) {
+    return UglifyJS.readNameCache(ARGS.name_cache, key);
 }
-if (program.output == "ast") {
-    options.output = {
-        ast: true,
-        code: false
-    };
+
+function writeNameCache(key, cache) {
+    return UglifyJS.writeNameCache(ARGS.name_cache, key, cache);
 }
-if (program.parse) {
-    if (program.parse.acorn || program.parse.spidermonkey) {
-        if (program.sourceMap) fatal("ERROR: inline source map only works with built-in parser");
-    } else {
-        options.parse = program.parse;
-    }
+
+function extractRegex(str) {
+  if (/^\/.*\/[a-zA-Z]*$/.test(str)) {
+    var regex_pos = str.lastIndexOf("/");
+    return new RegExp(str.substr(1, regex_pos - 1), str.substr(regex_pos + 1));
+  } else {
+    throw new Error("Invalid regular expression: " + str);
+  }
 }
-var convert_path = function(name) {
-    return name;
+
+if (ARGS.quotes === true) {
+    ARGS.quotes = 3;
+}
+
+if (ARGS.mangle_props === true) {
+    ARGS.mangle_props = 1;
+} else if (ARGS.mangle_props === "unquoted") {
+    ARGS.mangle_props = 2;
+}
+
+var OUTPUT_OPTIONS = {
+    beautify     : BEAUTIFY ? true : false,
+    max_line_len : 32000,
+    preamble     : ARGS.preamble || null,
+    quote_style  : ARGS.quotes != null ? ARGS.quotes : 0,
 };
-if (typeof program.sourceMap == "object" && "base" in program.sourceMap) {
-    convert_path = function() {
-        var base = program.sourceMap.base;
-        delete options.sourceMap.base;
-        return function(name) {
-            return path.relative(base, name);
-        };
-    }();
+
+if (ARGS.mangle_props == 2) {
+    OUTPUT_OPTIONS.keep_quoted_props = true;
+    if (COMPRESS && !("properties" in COMPRESS))
+        COMPRESS.properties = false;
 }
-if (program.verbose) {
-    options.warnings = "verbose";
-} else if (program.warn) {
-    options.warnings = true;
+
+if (ARGS.support_ie8 === true && ARGS.screw_ie8 !== true) {
+    screw_ie8 = false;
 }
-if (program.self) {
-    if (program.args.length) {
-        console.error("WARN: Ignoring input files since --self was passed");
-    }
-    if (!options.wrap) options.wrap = "UglifyJS";
-    simple_glob(UglifyJS.FILES).forEach(function(name) {
-        files[convert_path(name)] = read_file(name);
-    });
-    run();
-} else if (program.args.length) {
-    simple_glob(program.args).forEach(function(name) {
-        files[convert_path(name)] = read_file(name);
-    });
-    run();
+
+if (COMPRESS) COMPRESS.screw_ie8 = screw_ie8;
+if (MANGLE) MANGLE.screw_ie8 = screw_ie8;
+OUTPUT_OPTIONS.screw_ie8 = screw_ie8;
+
+if (ARGS.keep_fnames) {
+    if (COMPRESS) COMPRESS.keep_fnames = true;
+    if (MANGLE) MANGLE.keep_fnames = true;
+}
+
+if (ARGS.wrap_iife) {
+    if (COMPRESS) COMPRESS.negate_iife = false;
+    OUTPUT_OPTIONS.wrap_iife = true;
+}
+
+if (BEAUTIFY)
+    UglifyJS.merge(OUTPUT_OPTIONS, BEAUTIFY);
+
+if (ARGS.comments === "") {
+    OUTPUT_OPTIONS.comments = "some";
 } else {
-    var chunks = [];
-    process.stdin.setEncoding("utf8");
-    process.stdin.on("data", function(chunk) {
-        chunks.push(chunk);
-    }).on("end", function() {
-        files = [ chunks.join("") ];
-        run();
-    });
-    process.stdin.resume();
+    OUTPUT_OPTIONS.comments = ARGS.comments;
 }
 
-function convert_ast(fn) {
-    return UglifyJS.AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
+var files = ARGS._.slice();
+
+if (process.platform === "win32")
+    files = UglifyJS.simple_glob(files);
+
+if (ARGS.self) {
+    if (files.length > 0) {
+        print_error("WARN: Ignoring input files since --self was passed");
+    }
+    files = UglifyJS.FILES;
+    if (!ARGS.wrap) ARGS.wrap = "UglifyJS";
 }
 
-function run() {
-    UglifyJS.AST_Node.warn_function = function(msg) {
-        console.error("WARN:", msg);
-    };
-    if (program.stats) program.stats = Date.now();
-    try {
-        if (program.parse) {
-            if (program.parse.acorn) {
-                files = convert_ast(function(toplevel, name) {
-                    return require("acorn").parse(files[name], {
-                        locations: true,
-                        program: toplevel,
-                        sourceFile: name
-                    });
-                });
-            } else if (program.parse.spidermonkey) {
-                files = convert_ast(function(toplevel, name) {
-                    var obj = JSON.parse(files[name]);
-                    if (!toplevel) return obj;
-                    toplevel.body = toplevel.body.concat(obj.body);
-                    return toplevel;
-                });
-            }
-        }
-    } catch (ex) {
-        fatal(ex.stack);
+var ORIG_MAP = ARGS.in_source_map;
+
+if (ORIG_MAP && ORIG_MAP != "inline") {
+    ORIG_MAP = JSON.parse(fs.readFileSync(ORIG_MAP));
+    if (files.length == 0) {
+        print_error("INFO: Using file from the input source map: " + ORIG_MAP.file);
+        files = [ ORIG_MAP.file ];
     }
-    var result = UglifyJS.minify(files, options);
-    if (result.error) {
-        var ex = result.error;
-        if (ex.name == "SyntaxError") {
-            console.error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
-            var col = ex.col;
-            var lines = files[ex.filename].split(/\r?\n/);
-            var line = lines[ex.line - 1];
-            if (!line && !col) {
-                line = lines[ex.line - 2];
-                col = line.length;
-            }
-            if (line) {
-                if (col > 40) {
-                    line = line.slice(col - 40);
-                    col = 40;
-                }
-                console.error(line.slice(0, 80));
-                console.error(line.slice(0, col).replace(/\S/g, " ") + "^");
-            }
-        }
-        if (ex.defs) {
-            console.error("Supported options:");
-            console.error(ex.defs);
-        }
-        fatal(ex.stack);
-    } else if (program.output == "ast") {
-        console.log(JSON.stringify(result.ast, function(key, value) {
-            if (skip_key(key)) return;
-            if (value instanceof UglifyJS.AST_Token) return;
-            if (value instanceof UglifyJS.Dictionary) return;
-            if (value instanceof UglifyJS.AST_Node) {
-                var result = {
-                    _class: "AST_" + value.TYPE
-                };
-                value.CTOR.PROPS.forEach(function(prop) {
-                    result[prop] = value[prop];
-                });
-                return result;
-            }
-            return value;
-        }, 2));
-    } else if (program.output == "spidermonkey") {
-        console.log(JSON.stringify(UglifyJS.minify(result.code, {
-            compress: false,
-            mangle: false,
-            output: {
-                ast: true,
-                code: false
-            }
-        }).ast.to_mozilla_ast(), null, 2));
-    } else if (program.output) {
-        fs.writeFileSync(program.output, result.code);
-        if (result.map) {
-            fs.writeFileSync(program.output + ".map", result.map);
-        }
-    } else {
-        console.log(result.code);
-    }
-    if (program.nameCache) {
-        fs.writeFileSync(program.nameCache, JSON.stringify(cache, function(key, value) {
-            return value instanceof UglifyJS.Dictionary ? value.toObject() : value;
-        }));
-    }
-    if (program.stats) console.error("Elapsed:", Date.now() - program.stats);
 }
 
-function fatal(message) {
-    console.error(message.replace(/^\S*?Error:/, "ERROR:"));
+if (files.length == 0) {
+    files = [ "-" ];
+}
+
+if (ORIG_MAP == "inline") {
+    if (files.length > 1) {
+        print_error("ERROR: Inline source map only works with singular input");
+        process.exit(1);
+    }
+    if (ARGS.acorn || ARGS.spidermonkey) {
+        print_error("ERROR: Inline source map only works with built-in parser");
+        process.exit(1);
+    }
+}
+
+if (files.indexOf("-") >= 0 && ARGS.source_map) {
+    print_error("ERROR: Source map doesn't work with input from STDIN");
     process.exit(1);
 }
 
-// A file glob function that only supports "*" and "?" wildcards in the basename.
-// Example: "foo/bar/*baz??.*.js"
-// Argument `glob` may be a string or an array of strings.
-// Returns an array of strings. Garbage in, garbage out.
-function simple_glob(glob) {
-    if (Array.isArray(glob)) {
-        return [].concat.apply([], glob.map(simple_glob));
-    }
-    if (glob.match(/\*|\?/)) {
-        var dir = path.dirname(glob);
-        try {
-            var entries = fs.readdirSync(dir);
-        } catch (ex) {}
-        if (entries) {
-            var pattern = "^" + path.basename(glob)
-                .replace(/[.+^$[\]\\(){}]/g, "\\$&")
-                .replace(/\*/g, "[^/\\\\]*")
-                .replace(/\?/g, "[^/\\\\]") + "$";
-            var mod = process.platform === "win32" ? "i" : "";
-            var rx = new RegExp(pattern, mod);
-            var results = entries.filter(function(name) {
-                return rx.test(name);
-            }).map(function(name) {
-                return path.join(dir, name);
-            });
-            if (results.length) return results;
+if (files.filter(function(el){ return el == "-" }).length > 1) {
+    print_error("ERROR: Can read a single file from STDIN (two or more dashes specified)");
+    process.exit(1);
+}
+
+var STATS = {};
+var TOPLEVEL = null;
+var P_RELATIVE = ARGS.p && ARGS.p == "relative";
+var SOURCES_CONTENT = {};
+var index = 0;
+
+!function cb() {
+    if (index == files.length) return done();
+    var file = files[index++];
+    read_whole_file(file, function (err, code) {
+        if (err) {
+            print_error("ERROR: can't read file: " + file);
+            process.exit(1);
         }
-    }
-    return [ glob ];
-}
-
-function read_file(path, default_value) {
-    try {
-        return fs.readFileSync(path, "utf8");
-    } catch (ex) {
-        if (ex.code == "ENOENT" && default_value != null) return default_value;
-        fatal(ex.stack);
-    }
-}
-
-function parse_js(flag, constants) {
-    return function(value, options) {
-        options = options || {};
-        try {
-            UglifyJS.minify(value, {
-                parse: {
-                    expression: true
-                },
-                compress: false,
-                mangle: false,
-                output: {
-                    ast: true,
-                    code: false
+        if (ORIG_MAP == "inline") {
+            ORIG_MAP = read_source_map(code);
+        }
+        if (ARGS.p != null) {
+            if (P_RELATIVE) {
+                file = path.relative(path.dirname(ARGS.source_map), file).replace(/\\/g, '/');
+            } else {
+                var p = parseInt(ARGS.p, 10);
+                if (!isNaN(p)) {
+                    file = file.replace(/^\/+/, "").split(/\/+/).slice(ARGS.p).join("/");
                 }
-            }).ast.walk(new UglifyJS.TreeWalker(function(node) {
-                if (node instanceof UglifyJS.AST_Assign) {
-                    var name = node.left.print_to_string();
-                    var value = node.right;
-                    if (!constants) {
-                        options[name] = value;
-                    } else if (value instanceof UglifyJS.AST_Array) {
-                        options[name] = value.elements.map(to_string);
-                    } else {
-                        options[name] = to_string(value);
-                    }
-                    return true;
-                }
-                if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_PropAccess) {
-                    var name = node.print_to_string();
-                    options[name] = true;
-                    return true;
-                }
-                if (!(node instanceof UglifyJS.AST_Sequence)) throw node;
-
-                function to_string(value) {
-                    return value instanceof UglifyJS.AST_Constant ? value.getValue() : value.print_to_string({
-                        quote_keys: true
+            }
+        }
+        SOURCES_CONTENT[file] = code;
+        time_it("parse", function(){
+            if (ARGS.spidermonkey) {
+                var program = JSON.parse(code);
+                if (!TOPLEVEL) TOPLEVEL = program;
+                else TOPLEVEL.body = TOPLEVEL.body.concat(program.body);
+            }
+            else if (ARGS.acorn) {
+                TOPLEVEL = acorn.parse(code, {
+                    locations     : true,
+                    sourceFile    : file,
+                    program       : TOPLEVEL
+                });
+            }
+            else {
+                try {
+                    TOPLEVEL = UglifyJS.parse(code, {
+                        filename     : file,
+                        toplevel     : TOPLEVEL,
+                        expression   : ARGS.expr,
+                        bare_returns : ARGS.bare_returns,
                     });
+                } catch(ex) {
+                    if (ex instanceof UglifyJS.JS_Parse_Error) {
+                        print_error("Parse error at " + file + ":" + ex.line + "," + ex.col);
+                        var col = ex.col;
+                        var lines = code.split(/\r?\n/);
+                        var line = lines[ex.line - 1];
+                        if (!line && !col) {
+                            line = lines[ex.line - 2];
+                            col = line.length;
+                        }
+                        if (line) {
+                            if (col > 40) {
+                                line = line.slice(col - 40);
+                                col = 40;
+                            }
+                            print_error(line.slice(0, 80));
+                            print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
+                        }
+                        print_error(ex.stack);
+                        process.exit(1);
+                    }
+                    throw ex;
                 }
-            }));
-        } catch(ex) {
-            fatal("Error parsing arguments for '" + flag + "': " + value);
-        }
-        return options;
-    }
-}
+            };
+        });
+        cb();
+    });
+}();
 
-function parse_source_map() {
-    var parse = parse_js("sourceMap", true);
-    return function(value, options) {
-        var hasContent = options && options.sourceMap && "content" in options.sourceMap;
-        var settings = parse(value, options);
-        if (!hasContent && settings.content && settings.content != "inline") {
-            console.error("INFO: Using input source map:", settings.content);
-            settings.content = read_file(settings.content, settings.content);
-        }
-        return settings;
-    }
-}
+function done() {
+    var OUTPUT_FILE = ARGS.o;
 
-function to_cache(key) {
-    if (cache[key]) {
-        cache[key].props = UglifyJS.Dictionary.fromObject(cache[key].props);
+    var SOURCE_MAP = (ARGS.source_map || ARGS.source_map_inline) ? UglifyJS.SourceMap({
+        file: P_RELATIVE ? path.relative(path.dirname(ARGS.source_map), OUTPUT_FILE) : OUTPUT_FILE,
+        root: ARGS.source_map_root || ORIG_MAP && ORIG_MAP.sourceRoot,
+        orig: ORIG_MAP,
+    }) : null;
+
+    OUTPUT_OPTIONS.source_map = SOURCE_MAP;
+
+    try {
+        var output = UglifyJS.OutputStream(OUTPUT_OPTIONS);
+        var compressor = COMPRESS && UglifyJS.Compressor(COMPRESS);
+    } catch(ex) {
+        if (ex instanceof UglifyJS.DefaultsError) {
+            print_error(ex.message);
+            print_error("Supported options:");
+            print_error(sys.inspect(ex.defs));
+            process.exit(1);
+        }
+    }
+
+    if (ARGS.acorn || ARGS.spidermonkey) time_it("convert_ast", function(){
+        TOPLEVEL = UglifyJS.AST_Node.from_mozilla_ast(TOPLEVEL);
+    });
+
+    if (ARGS.wrap != null) {
+        TOPLEVEL = TOPLEVEL.wrap_commonjs(ARGS.wrap, ARGS.export_all);
+    }
+
+    if (ARGS.enclose != null) {
+        var arg_parameter_list = ARGS.enclose;
+        if (arg_parameter_list === true) {
+            arg_parameter_list = [];
+        }
+        else if (!(arg_parameter_list instanceof Array)) {
+            arg_parameter_list = [arg_parameter_list];
+        }
+        TOPLEVEL = TOPLEVEL.wrap_enclose(arg_parameter_list);
+    }
+
+    if (ARGS.mangle_props || ARGS.name_cache) (function(){
+        var reserved = RESERVED ? RESERVED.props : null;
+        var cache = readNameCache("props");
+        var regex;
+
+        try {
+          regex = ARGS.mangle_regex ? extractRegex(ARGS.mangle_regex) : null;
+        } catch (e) {
+            print_error("ERROR: Invalid --mangle-regex: " + e.message);
+            process.exit(1);
+        }
+
+        TOPLEVEL = UglifyJS.mangle_properties(TOPLEVEL, {
+            reserved      : reserved,
+            cache         : cache,
+            only_cache    : !ARGS.mangle_props,
+            regex         : regex,
+            ignore_quoted : ARGS.mangle_props == 2,
+            debug         : typeof ARGS.mangle_props_debug === "undefined" ? false : ARGS.mangle_props_debug
+        });
+        writeNameCache("props", cache);
+    })();
+
+    var SCOPE_IS_NEEDED = COMPRESS || MANGLE || ARGS.lint
+    var TL_CACHE = readNameCache("vars");
+    if (MANGLE) MANGLE.cache = TL_CACHE;
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope(MANGLE || { screw_ie8: screw_ie8, cache: TL_CACHE });
+            if (ARGS.lint) {
+                TOPLEVEL.scope_warnings();
+            }
+        });
+    }
+
+    if (COMPRESS) {
+        time_it("squeeze", function(){
+            TOPLEVEL = compressor.compress(TOPLEVEL);
+        });
+    }
+
+    if (SCOPE_IS_NEEDED) {
+        time_it("scope", function(){
+            TOPLEVEL.figure_out_scope(MANGLE || { screw_ie8: screw_ie8, cache: TL_CACHE });
+            if (MANGLE && !TL_CACHE) {
+                TOPLEVEL.compute_char_frequency(MANGLE);
+            }
+        });
+    }
+
+    if (MANGLE) time_it("mangle", function(){
+        TOPLEVEL.mangle_names(MANGLE);
+    });
+
+    writeNameCache("vars", TL_CACHE);
+
+    if (ARGS.source_map_include_sources) {
+        for (var file in SOURCES_CONTENT) {
+            if (SOURCES_CONTENT.hasOwnProperty(file)) {
+                SOURCE_MAP.get().setSourceContent(file, SOURCES_CONTENT[file]);
+            }
+        }
+    }
+
+    if (ARGS.dump_spidermonkey_ast) {
+        print(JSON.stringify(TOPLEVEL.to_mozilla_ast(), null, 2));
     } else {
-        cache[key] = {
-            cname: -1,
-            props: new UglifyJS.Dictionary()
-        };
+        time_it("generate", function(){
+            TOPLEVEL.print(output);
+        });
+
+        output = output.get();
+
+        if (SOURCE_MAP) {
+            if (ARGS.source_map_inline) {
+                var base64_string = new Buffer(SOURCE_MAP.toString()).toString('base64');
+                output += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + base64_string;
+            } else {
+                fs.writeFileSync(ARGS.source_map, SOURCE_MAP, "utf8");
+                var source_map_url = ARGS.source_map_url || (
+                    P_RELATIVE
+                        ? path.relative(path.dirname(OUTPUT_FILE), ARGS.source_map)
+                        : ARGS.source_map
+                );
+                output += "\n//# sourceMappingURL=" + source_map_url;
+            }
+        }
+
+        if (OUTPUT_FILE) {
+            fs.writeFileSync(OUTPUT_FILE, output, "utf8");
+        } else {
+            print(output);
+        }
+    }
+
+    if (ARGS.stats) {
+        print_error(UglifyJS.string_template("Timing information (compressed {count} files):", {
+            count: files.length
+        }));
+        for (var i in STATS) if (STATS.hasOwnProperty(i)) {
+            print_error(UglifyJS.string_template("- {name}: {time}s", {
+                name: i,
+                time: (STATS[i] / 1000).toFixed(3)
+            }));
+        }
     }
-    return cache[key];
 }
 
-function skip_key(key) {
-    return skip_keys.indexOf(key) >= 0;
+/* -----[ functions ]----- */
+
+function normalize(o) {
+    for (var i in o) if (o.hasOwnProperty(i) && /-/.test(i)) {
+        o[i.replace(/-/g, "_")] = o[i];
+        delete o[i];
+    }
+}
+
+function getOptions(flag, constants) {
+    var x = ARGS[flag];
+    if (x == null || x === false) return null;
+    var ret = {};
+    if (x !== "") {
+        if (Array.isArray(x)) x = x.map(function (v) { return "(" + v + ")"; }).join(", ");
+
+        var ast;
+        try {
+            ast = UglifyJS.parse(x, { cli: true, expression: true });
+        } catch(ex) {
+            if (ex instanceof UglifyJS.JS_Parse_Error) {
+                print_error("Error parsing arguments for flag `" + flag + "': " + x);
+                process.exit(1);
+            }
+        }
+        ast.walk(new UglifyJS.TreeWalker(function(node){
+            if (node instanceof UglifyJS.AST_Seq) return; // descend
+            if (node instanceof UglifyJS.AST_Assign) {
+                var name = node.left.print_to_string().replace(/-/g, "_");
+                var value = node.right;
+                if (constants)
+                    value = new Function("return (" + value.print_to_string() + ")")();
+                ret[name] = value;
+                return true;    // no descend
+            }
+            if (node instanceof UglifyJS.AST_Symbol || node instanceof UglifyJS.AST_Binary) {
+                var name = node.print_to_string().replace(/-/g, "_");
+                ret[name] = true;
+                return true;    // no descend
+            }
+            print_error(node.TYPE)
+            print_error("Error parsing arguments for flag `" + flag + "': " + x);
+            process.exit(1);
+        }));
+    }
+    return ret;
+}
+
+function read_whole_file(filename, cb) {
+    if (filename == "-") {
+        var chunks = [];
+        process.stdin.setEncoding('utf-8');
+        process.stdin.on('data', function (chunk) {
+            chunks.push(chunk);
+        }).on('end', function () {
+            cb(null, chunks.join(""));
+        });
+        process.openStdin();
+    } else {
+        fs.readFile(filename, "utf-8", cb);
+    }
+}
+
+function read_source_map(code) {
+    var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
+    if (!match) {
+        print_error("WARN: inline source map not found");
+        return null;
+    }
+    return JSON.parse(new Buffer(match[2], "base64"));
+}
+
+function time_it(name, cont) {
+    var t1 = new Date().getTime();
+    var ret = cont();
+    if (ARGS.stats) {
+        var spent = new Date().getTime() - t1;
+        if (STATS[name]) STATS[name] += spent;
+        else STATS[name] = spent;
+    }
+    return ret;
+}
+
+function print_error(msg) {
+    console.error("%s", msg);
+}
+
+function print(txt) {
+    console.log("%s", txt);
 }

lib/ast.js

@@ -157,7 +157,7 @@ var AST_SimpleStatement = DEFNODE("SimpleStatement", "body", {
 
 function walk_body(node, visitor) {
     var body = node.body;
-    if (body instanceof AST_Node) {
+    if (body instanceof AST_Statement) {
         body._walk(visitor);
     }
     else for (var i = 0, len = body.length; i < len; i++) {
@@ -182,13 +182,21 @@ var AST_BlockStatement = DEFNODE("BlockStatement", null, {
 }, AST_Block);
 
 var AST_EmptyStatement = DEFNODE("EmptyStatement", null, {
-    $documentation: "The empty statement (empty block or simply a semicolon)"
+    $documentation: "The empty statement (empty block or simply a semicolon)",
+    _walk: function(visitor) {
+        return visitor._visit(this);
+    }
 }, AST_Statement);
 
 var AST_StatementWithBody = DEFNODE("StatementWithBody", "body", {
     $documentation: "Base class for all statements that contain one nested body: `For`, `ForIn`, `Do`, `While`, `With`",
     $propdoc: {
         body: "[AST_Statement] the body; this should always be present, even if it's an AST_EmptyStatement"
+    },
+    _walk: function(visitor) {
+        return visitor._visit(this, function(){
+            this.body._walk(visitor);
+        });
     }
 }, AST_Statement);
 
@@ -284,10 +292,6 @@ var AST_ForIn = DEFNODE("ForIn", "init name object", {
     }
 }, AST_IterationStatement);
 
-var AST_ForOf = DEFNODE("ForOf", null, {
-    $documentation: "A `for ... of` statement",
-}, AST_ForIn);
-
 var AST_With = DEFNODE("With", "expression", {
     $documentation: "A `with` statement",
     $propdoc: {
@@ -315,13 +319,6 @@ var AST_Scope = DEFNODE("Scope", "directives variables functions uses_with uses_
         enclosed: "[SymbolDef*/S] a list of all symbol definitions that are accessed from this scope or any subscopes",
         cname: "[integer/S] current index for mangling variables (used internally by the mangler)",
     },
-    get_defun_scope: function () {
-        var self = this;
-        while (self.is_block_scope() && self.parent_scope) {
-            self = self.parent_scope;
-        }
-        return self;
-    }
 }, AST_Block);
 
 var AST_Toplevel = DEFNODE("Toplevel", "globals", {
@@ -329,124 +326,75 @@ var AST_Toplevel = DEFNODE("Toplevel", "globals", {
     $propdoc: {
         globals: "[Object/S] a map of name -> SymbolDef for all undeclared names",
     },
-    wrap_commonjs: function(name) {
-        var body = this.body;
-        var wrapped_tl = "(function(exports){'$ORIG';})(typeof " + name + "=='undefined'?(" + name + "={}):" + name + ");";
+    wrap_enclose: function(arg_parameter_pairs) {
+        var self = this;
+        var args = [];
+        var parameters = [];
+
+        arg_parameter_pairs.forEach(function(pair) {
+            var splitAt = pair.lastIndexOf(":");
+
+            args.push(pair.substr(0, splitAt));
+            parameters.push(pair.substr(splitAt + 1));
+        });
+
+        var wrapped_tl = "(function(" + parameters.join(",") + "){ '$ORIG'; })(" + args.join(",") + ")";
         wrapped_tl = parse(wrapped_tl);
         wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
             if (node instanceof AST_Directive && node.value == "$ORIG") {
-                return MAP.splice(body);
+                return MAP.splice(self.body);
+            }
+        }));
+        return wrapped_tl;
+    },
+    wrap_commonjs: function(name, export_all) {
+        var self = this;
+        var to_export = [];
+        if (export_all) {
+            self.figure_out_scope();
+            self.walk(new TreeWalker(function(node){
+                if (node instanceof AST_SymbolDeclaration && node.definition().global) {
+                    if (!find_if(function(n){ return n.name == node.name }, to_export))
+                        to_export.push(node);
+                }
+            }));
+        }
+        var wrapped_tl = "(function(exports, global){ '$ORIG'; '$EXPORTS'; global['" + name + "'] = exports; }({}, (function(){return this}())))";
+        wrapped_tl = parse(wrapped_tl);
+        wrapped_tl = wrapped_tl.transform(new TreeTransformer(function before(node){
+            if (node instanceof AST_Directive) {
+                switch (node.value) {
+                  case "$ORIG":
+                    return MAP.splice(self.body);
+                  case "$EXPORTS":
+                    var body = [];
+                    to_export.forEach(function(sym){
+                        body.push(new AST_SimpleStatement({
+                            body: new AST_Assign({
+                                left: new AST_Sub({
+                                    expression: new AST_SymbolRef({ name: "exports" }),
+                                    property: new AST_String({ value: sym.name }),
+                                }),
+                                operator: "=",
+                                right: new AST_SymbolRef(sym),
+                            }),
+                        }));
+                    });
+                    return MAP.splice(body);
+                }
             }
         }));
         return wrapped_tl;
     }
 }, AST_Scope);
 
-var AST_Expansion = DEFNODE("Expansion", "expression", {
-    $documentation: "An expandible argument, such as ...rest, a splat, such as [1,2,...all], or an expansion in a variable declaration, such as var [first, ...rest] = list",
-    $propdoc: {
-        expression: "AST_Symbol the thing to be expanded"
-    },
-    _walk: function(visitor) {
-        var self = this;
-        return visitor._visit(this, function(){
-            self.expression.walk(visitor);
-        });
-    }
-});
-
-var AST_ArrowParametersOrSeq = DEFNODE("ArrowParametersOrSeq", "expressions", {
-    $documentation: "A set of arrow function parameters or a sequence expression. This is used because when the parser sees a \"(\" it could be the start of a seq, or the start of a parameter list of an arrow function.",
-    $propdoc: {
-        expressions: "[AST_Expression|AST_Destructuring|AST_Expansion*] array of expressions or argument names or destructurings."
-    },
-    as_params: function (croak) {
-        // We don't want anything which doesn't belong in a destructuring
-        var root = this;
-        return this.expressions.map(function to_fun_args(ex, _, __, default_seen_above) {
-            var insert_default = function(ex, default_value) {
-                if (default_value) {
-                    return new AST_DefaultAssign({
-                        start: ex.start,
-                        left: ex,
-                        operator: "=",
-                        right: default_value,
-                        end: default_value.end
-                    });
-                }
-                return ex;
-            }
-            if (ex instanceof AST_Object) {
-                return insert_default(new AST_Destructuring({
-                    start: ex.start,
-                    end: ex.end,
-                    is_array: false,
-                    names: ex.properties.map(to_fun_args)
-                }), default_seen_above);
-            } else if (ex instanceof AST_ObjectKeyVal) {
-                if (ex.key instanceof AST_SymbolRef) {
-                    ex.key = to_fun_args(ex.key, 0, [ex.key]);
-                }
-                ex.value = to_fun_args(ex.value, 0, [ex.key]);
-                return insert_default(ex, default_seen_above);
-            } else if (ex instanceof AST_Hole) {
-                return ex;
-            } else if (ex instanceof AST_Destructuring) {
-                ex.names = ex.names.map(to_fun_args);
-                return insert_default(ex, default_seen_above);
-            } else if (ex instanceof AST_SymbolRef) {
-                return insert_default(new AST_SymbolFunarg({
-                    name: ex.name,
-                    start: ex.start,
-                    end: ex.end
-                }), default_seen_above);
-            } else if (ex instanceof AST_Expansion) {
-                ex.expression = to_fun_args(ex.expression);
-                return insert_default(ex, default_seen_above);
-            } else if (ex instanceof AST_Array) {
-                return insert_default(new AST_Destructuring({
-                    start: ex.start,
-                    end: ex.end,
-                    is_array: true,
-                    names: ex.elements.map(to_fun_args)
-                }), default_seen_above);
-            } else if (ex instanceof AST_Assign) {
-                return insert_default(to_fun_args(ex.left, undefined, undefined, ex.right), default_seen_above);
-            } else if (ex instanceof AST_DefaultAssign) {
-                ex.left = to_fun_args(ex.left, 0, [ex.left]);
-                return ex;
-            } else {
-                croak("Invalid function parameter", ex.start.line, ex.start.col);
-            }
-        });
-    },
-    as_expr: function() {
-        var exprs = this.expressions;
-        return exprs.length == 1 ? exprs[0] : new AST_Sequence({
-            expressions: exprs
-        });
-    }
-});
-
-var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments is_generator", {
+var AST_Lambda = DEFNODE("Lambda", "name argnames uses_arguments", {
     $documentation: "Base class for functions",
     $propdoc: {
-        is_generator: "[boolean] is generatorFn or not",
         name: "[AST_SymbolDeclaration?] the name of this function",
-        argnames: "[AST_SymbolFunarg|AST_Destructuring|AST_Expansion|AST_DefaultAssign*] array of function arguments, destructurings, or expanding arguments",
+        argnames: "[AST_SymbolFunarg*] array of function arguments",
         uses_arguments: "[boolean/S] tells whether this function accesses the arguments array"
     },
-    args_as_names: function () {
-        var out = [];
-        for (var i = 0; i < this.argnames.length; i++) {
-            if (this.argnames[i] instanceof AST_Destructuring) {
-                out = out.concat(this.argnames[i].all_symbols());
-            } else {
-                out.push(this.argnames[i]);
-            }
-        }
-        return out;
-    },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
             if (this.name) this.name._walk(visitor);
@@ -467,78 +415,10 @@ var AST_Function = DEFNODE("Function", null, {
     $documentation: "A function expression"
 }, AST_Lambda);
 
-var AST_Arrow = DEFNODE("Arrow", null, {
-    $documentation: "An ES6 Arrow function ((a) => b)"
-}, AST_Lambda);
-
 var AST_Defun = DEFNODE("Defun", null, {
     $documentation: "A function definition"
 }, AST_Lambda);
 
-/* -----[ DESTRUCTURING ]----- */
-var AST_Destructuring = DEFNODE("Destructuring", "names is_array", {
-    $documentation: "A destructuring of several names. Used in destructuring assignment and with destructuring function argument names",
-    $propdoc: {
-        "names": "[AST_Node*] Array of properties or elements",
-        "is_array": "[Boolean] Whether the destructuring represents an object or array"
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            this.names.forEach(function(name){
-                name._walk(visitor);
-            });
-        });
-    },
-    all_symbols: function() {
-        var out = [];
-        this.walk(new TreeWalker(function (node) {
-            if (node instanceof AST_Symbol) {
-                out.push(node);
-            }
-            if (node instanceof AST_Expansion) {
-                out.push(node.expression);
-            }
-        }));
-        return out;
-    }
-});
-
-var AST_PrefixedTemplateString = DEFNODE("PrefixedTemplateString", "template_string prefix", {
-    $documentation: "A templatestring with a prefix, such as String.raw`foobarbaz`",
-    $propdoc: {
-        template_string: "[AST_TemplateString] The template string",
-        prefix: "[AST_SymbolRef|AST_PropAccess] The prefix, which can be a symbol such as `foo` or a dotted expression such as `String.raw`."
-    },
-    _walk: function(visitor) {
-        this.prefix._walk(visitor);
-        this.template_string._walk(visitor);
-    }
-})
-
-var AST_TemplateString = DEFNODE("TemplateString", "segments", {
-    $documentation: "A template string literal",
-    $propdoc: {
-        segments: "[AST_TemplateSegment|AST_Expression]* One or more segments, starting with AST_TemplateSegment. AST_Expression may follow AST_TemplateSegment, but each AST_Expression must be followed by AST_TemplateSegment."
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            this.segments.forEach(function(seg, i){
-                if (i % 2 !== 0) {
-                    seg._walk(visitor);
-                }
-            });
-        });
-    }
-});
-
-var AST_TemplateSegment = DEFNODE("TemplateSegment", "value raw", {
-    $documentation: "A segment of a template string literal",
-    $propdoc: {
-        value: "Content of the segment",
-        raw: "Raw content of the segment"
-    }
-});
-
 /* -----[ JUMPS ]----- */
 
 var AST_Jump = DEFNODE("Jump", null, {
@@ -658,7 +538,7 @@ var AST_Try = DEFNODE("Try", "bcatch bfinally", {
 var AST_Catch = DEFNODE("Catch", "argname", {
     $documentation: "A `catch` node; only makes sense as part of a `try` statement",
     $propdoc: {
-        argname: "[AST_SymbolCatch|AST_Destructuring|AST_Expansion|AST_DefaultAssign] symbol for the exception"
+        argname: "[AST_SymbolCatch] symbol for the exception"
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
@@ -693,75 +573,14 @@ var AST_Var = DEFNODE("Var", null, {
     $documentation: "A `var` statement"
 }, AST_Definitions);
 
-var AST_Let = DEFNODE("Let", null, {
-    $documentation: "A `let` statement"
-}, AST_Definitions);
-
 var AST_Const = DEFNODE("Const", null, {
     $documentation: "A `const` statement"
 }, AST_Definitions);
 
-var AST_NameImport = DEFNODE("NameImport", "foreign_name name", {
-    $documentation: "The part of the import statement that imports names from a module.",
-    $propdoc: {
-        foreign_name: "[AST_SymbolImportForeign] The name being imported (as specified in the module)",
-        name: "[AST_SymbolImport] The name as it becomes available to this module."
-    },
-    _walk: function (visitor) {
-        return visitor._visit(this, function() {
-            this.foreign_name._walk(visitor);
-            this.name._walk(visitor);
-        });
-    }
-})
-
-var AST_Import = DEFNODE("Import", "imported_name imported_names module_name", {
-    $documentation: "An `import` statement",
-    $propdoc: {
-        imported_name: "[AST_SymbolImport] The name of the variable holding the module's default export.",
-        imported_names: "[AST_NameImport*] The names of non-default imported variables",
-        module_name: "[AST_String] String literal describing where this module came from",
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, function() {
-            if (this.imported_name) {
-                this.imported_name._walk(visitor);
-            }
-            if (this.imported_names) {
-                this.imported_names.forEach(function (name_import) {
-                    name_import._walk(visitor);
-                });
-            }
-            this.module_name._walk(visitor);
-        });
-    }
-});
-
-var AST_Export = DEFNODE("Export", "exported_definition exported_value is_default exported_names module_name", {
-    $documentation: "An `export` statement",
-    $propdoc: {
-        exported_definition: "[AST_Defun|AST_Definitions|AST_DefClass?] An exported definition",
-        exported_value: "[AST_Node?] An exported value",
-        exported_names: "[AST_NameImport*?] List of exported names",
-        module_name: "[AST_String?] Name of the file to load exports from",
-        is_default: "[Boolean] Whether this is the default exported value of this module"
-    },
-    _walk: function (visitor) {
-        visitor._visit(this, function () {
-            if (this.exported_definition) {
-                this.exported_definition._walk(visitor);
-            }
-            if (this.exported_value) {
-                this.exported_value._walk(visitor);
-            }
-        });
-    }
-}, AST_Statement);
-
 var AST_VarDef = DEFNODE("VarDef", "name value", {
     $documentation: "A variable declaration; only appears in a AST_Definitions node",
     $propdoc: {
-        name: "[AST_SymbolVar|AST_SymbolConst|AST_Destructuring] name of the variable",
+        name: "[AST_SymbolVar|AST_SymbolConst] name of the variable",
         value: "[AST_Node?] initializer, or null of there's no initializer"
     },
     _walk: function(visitor) {
@@ -782,11 +601,11 @@ var AST_Call = DEFNODE("Call", "expression args", {
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
+            this.expression._walk(visitor);
             var args = this.args;
             for (var i = 0, len = args.length; i < len; i++) {
                 args[i]._walk(visitor);
             }
-            this.expression._walk(visitor);
         });
     }
 });
@@ -795,16 +614,68 @@ var AST_New = DEFNODE("New", null, {
     $documentation: "An object instantiation.  Derives from a function call since it has exactly the same properties"
 }, AST_Call);
 
-var AST_Sequence = DEFNODE("Sequence", "expressions", {
-    $documentation: "A sequence expression (comma-separated expressions)",
+var AST_Seq = DEFNODE("Seq", "car cdr", {
+    $documentation: "A sequence expression (two comma-separated expressions)",
     $propdoc: {
-        expressions: "[AST_Node*] array of expressions (at least two)"
+        car: "[AST_Node] first element in sequence",
+        cdr: "[AST_Node] second element in sequence"
+    },
+    $cons: function(x, y) {
+        var seq = new AST_Seq(x);
+        seq.car = x;
+        seq.cdr = y;
+        return seq;
+    },
+    $from_array: function(array) {
+        if (array.length == 0) return null;
+        if (array.length == 1) return array[0].clone();
+        var list = null;
+        for (var i = array.length; --i >= 0;) {
+            list = AST_Seq.cons(array[i], list);
+        }
+        var p = list;
+        while (p) {
+            if (p.cdr && !p.cdr.cdr) {
+                p.cdr = p.cdr.car;
+                break;
+            }
+            p = p.cdr;
+        }
+        return list;
+    },
+    to_array: function() {
+        var p = this, a = [];
+        while (p) {
+            a.push(p.car);
+            if (p.cdr && !(p.cdr instanceof AST_Seq)) {
+                a.push(p.cdr);
+                break;
+            }
+            p = p.cdr;
+        }
+        return a;
+    },
+    add: function(node) {
+        var p = this;
+        while (p) {
+            if (!(p.cdr instanceof AST_Seq)) {
+                var cell = AST_Seq.cons(p.cdr, node);
+                return p.cdr = cell;
+            }
+            p = p.cdr;
+        }
+    },
+    len: function() {
+        if (this.cdr instanceof AST_Seq) {
+            return this.cdr.len() + 1;
+        } else {
+            return 2;
+        }
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            this.expressions.forEach(function(node) {
-                node._walk(visitor);
-            });
+            this.car._walk(visitor);
+            if (this.cdr) this.cdr._walk(visitor);
         });
     }
 });
@@ -857,7 +728,7 @@ var AST_UnaryPostfix = DEFNODE("UnaryPostfix", null, {
     $documentation: "Unary postfix expression, i.e. `i++`"
 }, AST_Unary);
 
-var AST_Binary = DEFNODE("Binary", "operator left right", {
+var AST_Binary = DEFNODE("Binary", "left operator right", {
     $documentation: "Binary expression, i.e. `a + b`",
     $propdoc: {
         left: "[AST_Node] left-hand side expression",
@@ -892,10 +763,6 @@ var AST_Assign = DEFNODE("Assign", null, {
     $documentation: "An assignment expression — `a = b + 5`",
 }, AST_Binary);
 
-var AST_DefaultAssign = DEFNODE("DefaultAssign", null, {
-    $documentation: "A default assignment expression like in `(a = 3) => a`"
-}, AST_Binary);
-
 /* -----[ LITERALS ]----- */
 
 var AST_Array = DEFNODE("Array", "elements", {
@@ -931,13 +798,11 @@ var AST_Object = DEFNODE("Object", "properties", {
 var AST_ObjectProperty = DEFNODE("ObjectProperty", "key value", {
     $documentation: "Base class for literal object properties",
     $propdoc: {
-        key: "[string|AST_Node] the property name converted to a string for ObjectKeyVal. For setters, getters and computed property this is an arbitrary AST_Node",
-        value: "[AST_Node] property value. For setters and getters this is an AST_Function."
+        key: "[string] the property name converted to a string for ObjectKeyVal.  For setters and getters this is an AST_SymbolAccessor.",
+        value: "[AST_Node] property value.  For setters and getters this is an AST_Accessor."
     },
     _walk: function(visitor) {
         return visitor._visit(this, function(){
-            if (this.key instanceof AST_Node)
-                this.key._walk(visitor);
             this.value._walk(visitor);
         });
     }
@@ -950,72 +815,21 @@ var AST_ObjectKeyVal = DEFNODE("ObjectKeyVal", "quote", {
     }
 }, AST_ObjectProperty);
 
-var AST_ObjectSetter = DEFNODE("ObjectSetter", "quote static", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] whether this is a static setter (classes only)"
-    },
+var AST_ObjectSetter = DEFNODE("ObjectSetter", null, {
     $documentation: "An object setter property",
 }, AST_ObjectProperty);
 
-var AST_ObjectGetter = DEFNODE("ObjectGetter", "quote static", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] whether this is a static getter (classes only)"
-    },
+var AST_ObjectGetter = DEFNODE("ObjectGetter", null, {
     $documentation: "An object getter property",
 }, AST_ObjectProperty);
 
-var AST_ConciseMethod = DEFNODE("ConciseMethod", "quote static is_generator", {
-    $propdoc: {
-        quote: "[string|undefined] the original quote character, if any",
-        static: "[boolean] whether this method is static (classes only)",
-        is_generator: "[boolean] is generatorFn or not",
-    },
-    $documentation: "An ES6 concise method inside an object or class"
-}, AST_ObjectProperty);
-
-var AST_Class = DEFNODE("Class", "name extends properties", {
-    $propdoc: {
-        name: "[AST_SymbolClass|AST_SymbolDefClass?] optional class name.",
-        extends: "[AST_Node]? optional parent class",
-        properties: "[AST_ObjectProperty*] array of properties"
-    },
-    $documentation: "An ES6 class",
-    _walk: function(visitor) {
-        return visitor._visit(this, function(){
-            if (this.name) {
-                this.name._walk(visitor);
-            }
-            if (this.extends) {
-                this.extends._walk(visitor);
-            }
-            this.properties.forEach(function(prop){
-                prop._walk(visitor);
-            });
-        });
-    },
-}, AST_Scope);
-
-var AST_DefClass = DEFNODE("DefClass", null, {
-    $documentation: "A class definition",
-}, AST_Class);
-
-var AST_ClassExpression = DEFNODE("ClassExpression", null, {
-    $documentation: "A class expression."
-}, AST_Class);
-
 var AST_Symbol = DEFNODE("Symbol", "scope name thedef", {
     $propdoc: {
         name: "[string] name of this symbol",
         scope: "[AST_Scope/S] the current scope (not necessarily the definition scope)",
         thedef: "[SymbolDef/S] the definition of this symbol"
     },
-    $documentation: "Base class for all symbols"
-});
-
-var AST_NewTarget = DEFNODE("NewTarget", null, {
-    $documentation: "A reference to new.target"
+    $documentation: "Base class for all symbols",
 });
 
 var AST_SymbolAccessor = DEFNODE("SymbolAccessor", null, {
@@ -1030,17 +844,9 @@ var AST_SymbolVar = DEFNODE("SymbolVar", null, {
     $documentation: "Symbol defining a variable",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolBlockDeclaration = DEFNODE("SymbolBlockDeclaration", null, {
-    $documentation: "Base class for block-scoped declaration symbols"
-}, AST_SymbolDeclaration);
-
 var AST_SymbolConst = DEFNODE("SymbolConst", null, {
     $documentation: "A constant declaration"
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolLet = DEFNODE("SymbolLet", null, {
-    $documentation: "A block-scoped `let` declaration"
-}, AST_SymbolBlockDeclaration);
+}, AST_SymbolDeclaration);
 
 var AST_SymbolFunarg = DEFNODE("SymbolFunarg", null, {
     $documentation: "Symbol naming a function argument",
@@ -1050,33 +856,13 @@ var AST_SymbolDefun = DEFNODE("SymbolDefun", null, {
     $documentation: "Symbol defining a function",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolMethod = DEFNODE("SymbolMethod", null, {
-    $documentation: "Symbol in an object defining a method",
-}, AST_Symbol);
-
 var AST_SymbolLambda = DEFNODE("SymbolLambda", null, {
     $documentation: "Symbol naming a function expression",
 }, AST_SymbolDeclaration);
 
-var AST_SymbolDefClass = DEFNODE("SymbolDefClass", null, {
-    $documentation: "Symbol naming a class's name in a class declaration. Lexically scoped to its containing scope, and accessible within the class."
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolClass = DEFNODE("SymbolClass", null, {
-    $documentation: "Symbol naming a class's name. Lexically scoped to the class."
-}, AST_SymbolDeclaration);
-
 var AST_SymbolCatch = DEFNODE("SymbolCatch", null, {
     $documentation: "Symbol naming the exception in catch",
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolImport = DEFNODE("SymbolImport", null, {
-    $documentation: "Symbol refering to an imported name",
-}, AST_SymbolBlockDeclaration);
-
-var AST_SymbolImportForeign = DEFNODE("SymbolImportForeign", null, {
-    $documentation: "A symbol imported from a module, but it is defined in the other module, and its real name is irrelevant for this module's purposes",
-}, AST_Symbol);
+}, AST_SymbolDeclaration);
 
 var AST_Label = DEFNODE("Label", "references", {
     $documentation: "Symbol naming a label (declaration)",
@@ -1101,10 +887,6 @@ var AST_This = DEFNODE("This", null, {
     $documentation: "The `this` symbol",
 }, AST_Symbol);
 
-var AST_Super = DEFNODE("Super", null, {
-    $documentation: "The `super` symbol",
-}, AST_Symbol);
-
 var AST_Constant = DEFNODE("Constant", null, {
     $documentation: "Base class for all constants",
     getValue: function() {
@@ -1178,21 +960,6 @@ var AST_True = DEFNODE("True", null, {
     value: true
 }, AST_Boolean);
 
-/* -----[ Yield ]----- */
-
-var AST_Yield = DEFNODE("Yield", "expression is_star", {
-    $documentation: "A `yield` statement",
-    $propdoc: {
-        expression: "[AST_Node?] the value returned or thrown by this statement; could be null (representing undefined) but only when is_star is set to false",
-        is_star: "[Boolean] Whether this is a yield or yield* statement"
-    },
-    _walk: function(visitor) {
-        return visitor._visit(this, this.expression && function(){
-            this.expression._walk(visitor);
-        });
-    }
-});
-
 /* -----[ TreeWalker ]----- */
 
 function TreeWalker(callback) {
@@ -1215,22 +982,17 @@ TreeWalker.prototype = {
     parent: function(n) {
         return this.stack[this.stack.length - 2 - (n || 0)];
     },
-    push: function(node) {
+    push: function (node) {
         if (node instanceof AST_Lambda) {
             this.directives = Object.create(this.directives);
         } else if (node instanceof AST_Directive && !this.directives[node.value]) {
             this.directives[node.value] = node;
-        } else if (node instanceof AST_Class) {
-            this.directives = Object.create(this.directives);
-            if (!this.directives["use strict"]) {
-                this.directives["use strict"] = node;
-            }
         }
         this.stack.push(node);
     },
     pop: function(node) {
         this.stack.pop();
-        if (node instanceof AST_Lambda || node instanceof AST_Class) {
+        if (node instanceof AST_Lambda) {
             this.directives = Object.getPrototypeOf(this.directives);
         }
     },
@@ -1248,7 +1010,7 @@ TreeWalker.prototype = {
         var dir = this.directives[type];
         if (dir) return dir;
         var node = this.stack[this.stack.length - 1];
-        if (node instanceof AST_Scope && node.body) {
+        if (node instanceof AST_Scope) {
             for (var i = 0; i < node.body.length; ++i) {
                 var st = node.body[i];
                 if (!(st instanceof AST_Directive)) break;

lib/minify.js

@@ -1,154 +0,0 @@
-"use strict";
-
-var to_ascii = typeof atob == "undefined" ? function(b64) {
-    return new Buffer(b64, "base64").toString();
-} : atob;
-var to_base64 = typeof btoa == "undefined" ? function(str) {
-    return new Buffer(str).toString("base64");
-} : btoa;
-
-function read_source_map(code) {
-    var match = /\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);
-    if (!match) {
-        AST_Node.warn("inline source map not found");
-        return null;
-    }
-    return to_ascii(match[2]);
-}
-
-function set_shorthand(name, options, keys) {
-    if (options[name]) {
-        keys.forEach(function(key) {
-            if (options[key]) {
-                if (typeof options[key] != "object") options[key] = {};
-                if (!(name in options[key])) options[key][name] = options[name];
-            }
-        });
-    }
-}
-
-function minify(files, options) {
-    var warn_function = AST_Node.warn_function;
-    try {
-        if (typeof files == "string") {
-            files = [ files ];
-        }
-        options = defaults(options, {
-            compress: {},
-            ie8: false,
-            keep_fnames: false,
-            mangle: {},
-            output: {},
-            parse: {},
-            sourceMap: false,
-            toplevel: false,
-            warnings: false,
-            wrap: false,
-        }, true);
-        set_shorthand("ie8", options, [ "compress", "mangle", "output" ]);
-        set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
-        set_shorthand("toplevel", options, [ "compress", "mangle" ]);
-        set_shorthand("warnings", options, [ "compress" ]);
-        if (options.mangle) {
-            options.mangle = defaults(options.mangle, {
-                cache: null,
-                eval: false,
-                ie8: false,
-                keep_fnames: false,
-                properties: false,
-                reserved: [],
-                toplevel: false,
-            }, true);
-        }
-        if (options.sourceMap) {
-            options.sourceMap = defaults(options.sourceMap, {
-                content: null,
-                filename: null,
-                includeSources: false,
-                root: null,
-                url: null,
-            }, true);
-        }
-        var warnings = [];
-        if (options.warnings && !AST_Node.warn_function) {
-            AST_Node.warn_function = function(warning) {
-                warnings.push(warning);
-            };
-        }
-        var toplevel;
-        if (files instanceof AST_Toplevel) {
-            toplevel = files;
-        } else {
-            options.parse = options.parse || {};
-            options.parse.toplevel = null;
-            for (var name in files) {
-                options.parse.filename = name;
-                options.parse.toplevel = parse(files[name], options.parse);
-                if (options.sourceMap && options.sourceMap.content == "inline") {
-                    if (Object.keys(files).length > 1)
-                        throw new Error("inline source map only works with singular input");
-                    options.sourceMap.content = read_source_map(files[name]);
-                }
-            }
-            toplevel = options.parse.toplevel;
-        }
-        if (options.wrap) {
-            toplevel = toplevel.wrap_commonjs(options.wrap);
-        }
-        if (options.compress) {
-            toplevel.figure_out_scope(options.mangle);
-            toplevel = new Compressor(options.compress).compress(toplevel);
-        }
-        if (options.mangle) {
-            toplevel.figure_out_scope(options.mangle);
-            base54.reset();
-            toplevel.compute_char_frequency(options.mangle);
-            toplevel.mangle_names(options.mangle);
-            if (options.mangle.properties) {
-                toplevel = mangle_properties(toplevel, options.mangle.properties);
-            }
-        }
-        var result = {};
-        if (options.output.ast) {
-            result.ast = toplevel;
-        }
-        if (!HOP(options.output, "code") || options.output.code) {
-            if (options.sourceMap) {
-                if (typeof options.sourceMap.content == "string") {
-                    options.sourceMap.content = JSON.parse(options.sourceMap.content);
-                }
-                options.output.source_map = SourceMap({
-                    file: options.sourceMap.filename,
-                    orig: options.sourceMap.content,
-                    root: options.sourceMap.root
-                });
-                if (options.sourceMap.includeSources) {
-                    for (var name in files) {
-                        options.output.source_map.get().setSourceContent(name, files[name]);
-                    }
-                }
-            }
-            delete options.output.ast;
-            delete options.output.code;
-            var stream = OutputStream(options.output);
-            toplevel.print(stream);
-            result.code = stream.get();
-            if (options.sourceMap) {
-                result.map = options.output.source_map.toString();
-                if (options.sourceMap.url == "inline") {
-                    result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(result.map);
-                } else if (options.sourceMap.url) {
-                    result.code += "\n//# sourceMappingURL=" + options.sourceMap.url;
-                }
-            }
-        }
-        if (warnings.length) {
-            result.warnings = warnings;
-        }
-        return result;
-    } catch (ex) {
-        return { error: ex };
-    } finally {
-        AST_Node.warn_function = warn_function;
-    }
-}

lib/mozilla-ast.js

@@ -111,23 +111,19 @@
         },
         Property: function(M) {
             var key = M.key;
-            var name = key.type == "Identifier" ? key.name : key.value;
             var args = {
                 start    : my_start_token(key),
                 end      : my_end_token(M.value),
-                key      : name,
+                key      : key.type == "Identifier" ? key.name : key.value,
                 value    : from_moz(M.value)
             };
-            switch (M.kind) {
-              case "init":
-                return new AST_ObjectKeyVal(args);
-              case "set":
-                args.value.name = from_moz(key);
-                return new AST_ObjectSetter(args);
-              case "get":
-                args.value.name = from_moz(key);
-                return new AST_ObjectGetter(args);
-            }
+            if (M.kind == "init") return new AST_ObjectKeyVal(args);
+            args.key = new AST_SymbolAccessor({
+                name: args.key
+            });
+            args.value = new AST_Accessor(args.value);
+            if (M.kind == "get") return new AST_ObjectGetter(args);
+            if (M.kind == "set") return new AST_ObjectSetter(args);
         },
         ArrayExpression: function(M) {
             return new AST_Array({
@@ -149,11 +145,7 @@
             });
         },
         SequenceExpression: function(M) {
-            return new AST_Sequence({
-                start      : my_start_token(M),
-                end        : my_end_token(M),
-                expressions: M.expressions.map(from_moz)
-            });
+            return AST_Seq.from_array(M.expressions.map(from_moz));
         },
         MemberExpression: function(M) {
             return new (M.computed ? AST_Sub : AST_Dot)({
@@ -260,10 +252,7 @@
     map("CallExpression", AST_Call, "callee>expression, arguments@args");
 
     def_to_moz(AST_Toplevel, function To_Moz_Program(M) {
-        return {
-            type: "Program",
-            body: M.body.map(to_moz)
-        };
+        return to_moz_scope("Program", M);
     });
 
     def_to_moz(AST_Defun, function To_Moz_FunctionDeclaration(M) {
@@ -271,7 +260,7 @@
             type: "FunctionDeclaration",
             id: to_moz(M.name),
             params: M.argnames.map(to_moz),
-            body: to_moz_block(M)
+            body: to_moz_scope("BlockStatement", M)
         }
     });
 
@@ -280,7 +269,7 @@
             type: "FunctionExpression",
             id: to_moz(M.name),
             params: M.argnames.map(to_moz),
-            body: to_moz_block(M)
+            body: to_moz_scope("BlockStatement", M)
         }
     });
 
@@ -336,10 +325,10 @@
         };
     });
 
-    def_to_moz(AST_Sequence, function To_Moz_SequenceExpression(M) {
+    def_to_moz(AST_Seq, function To_Moz_SequenceExpression(M) {
         return {
             type: "SequenceExpression",
-            expressions: M.expressions.map(to_moz)
+            expressions: M.to_array().map(to_moz)
         };
     });
 
@@ -386,11 +375,10 @@
     });
 
     def_to_moz(AST_ObjectProperty, function To_Moz_Property(M) {
-        var key = (
-            is_identifier(M.key)
-            ? {type: "Identifier", name: M.key}
-            : {type: "Literal", value: M.key}
-        );
+        var key = {
+            type: "Literal",
+            value: M.key instanceof AST_SymbolAccessor ? M.key.name : M.key
+        };
         var kind;
         if (M instanceof AST_ObjectKeyVal) {
             kind = "init";
@@ -551,8 +539,8 @@
         moz_to_me = new Function("U2", "my_start_token", "my_end_token", "from_moz", "return(" + moz_to_me + ")")(
             exports, my_start_token, my_end_token, from_moz
         );
-        me_to_moz = new Function("to_moz", "to_moz_block", "return(" + me_to_moz + ")")(
-            to_moz, to_moz_block
+        me_to_moz = new Function("to_moz", "to_moz_block", "to_moz_scope", "return(" + me_to_moz + ")")(
+            to_moz, to_moz_block, to_moz_scope
         );
         MOZ_TO_ME[moztype] = moz_to_me;
         def_to_moz(mytype, me_to_moz);
@@ -610,4 +598,14 @@
         };
     };
 
+    function to_moz_scope(type, node) {
+        var body = node.body.map(to_moz);
+        if (node.body[0] instanceof AST_SimpleStatement && node.body[0].body instanceof AST_String) {
+            body.unshift(to_moz(new AST_EmptyStatement(node.body[0])));
+        }
+        return {
+            type: type,
+            body: body
+        };
+    };
 })();

lib/output.js

@@ -54,12 +54,9 @@ function OutputStream(options) {
 
     options = defaults(options, {
         ascii_only       : false,
-        ascii_identifiers: undefined,
         beautify         : false,
         bracketize       : false,
         comments         : false,
-        ecma             : 5,
-        ie8              : false,
         indent_level     : 4,
         indent_start     : 0,
         inline_script    : true,
@@ -69,9 +66,9 @@ function OutputStream(options) {
         preserve_line    : false,
         quote_keys       : false,
         quote_style      : 0,
+        screw_ie8        : true,
         semicolons       : true,
         shebang          : true,
-        shorthand        : undefined,
         source_map       : null,
         space_colon      : true,
         unescape_regexps : false,
@@ -79,12 +76,6 @@ function OutputStream(options) {
         wrap_iife        : false,
     }, true);
 
-    if (typeof options.ascii_identifiers === 'undefined')
-        options.ascii_identifiers = options.ascii_only;
-
-    if (options.shorthand === undefined)
-        options.shorthand = options.ecma > 5;
-
     // Convert comment option to RegExp if neccessary and set up comments filter
     var comment_filter = return_false; // Default case, throw all comments away
     if (options.comments) {
@@ -120,19 +111,9 @@ function OutputStream(options) {
     var OUTPUT = "";
 
     function to_ascii(str, identifier) {
-        return str.replace(/[\ud800-\udbff][\udc00-\udfff]|[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
-            var code = get_full_char_code(ch, 0).toString(16);
-
-            if ((identifier && code.length === 1 && options.ecma >= 6) || code.length > 4) {
-                if (options.ecma < 6) {
-                    if (identifier) {
-                        return ch; // no \u{} support
-                    }
-                    return "\\u" + ch.charCodeAt(0).toString(16) + "\\u"
-                        + ch.charCodeAt(1).toString(16);
-                }
-                return "\\u{" + code + "}";
-            } else if (code.length <= 2 && !identifier) {
+        return str.replace(/[\u0000-\u001f\u007f-\uffff]/g, function(ch) {
+            var code = ch.charCodeAt(0).toString(16);
+            if (code.length <= 2 && !identifier) {
                 while (code.length < 2) code = "0" + code;
                 return "\\x" + code;
             } else {
@@ -155,12 +136,12 @@ function OutputStream(options) {
               case "\t": return "\\t";
               case "\b": return "\\b";
               case "\f": return "\\f";
-              case "\x0B": return options.ie8 ? "\\x0B" : "\\v";
+              case "\x0B": return options.screw_ie8 ? "\\v" : "\\x0B";
               case "\u2028": return "\\u2028";
               case "\u2029": return "\\u2029";
               case "\ufeff": return "\\ufeff";
               case "\0":
-                  return /[0-7]/.test(get_full_char(str, i+1)) ? "\\x00" : "\\0";
+                  return /[0-7]/.test(str.charAt(i+1)) ? "\\x00" : "\\0";
             }
             return s;
         });
@@ -170,11 +151,7 @@ function OutputStream(options) {
         function quote_double() {
             return '"' + str.replace(/\x22/g, '\\"') + '"';
         }
-        function quote_template() {
-            return '`' + str.replace(/`/g, '\\`') + '`';
-        }
         if (options.ascii_only) str = to_ascii(str);
-        if (quote === "`") return quote_template();
         switch (options.quote_style) {
           case 1:
             return quote_single();
@@ -199,7 +176,7 @@ function OutputStream(options) {
 
     function make_name(name) {
         name = name.toString();
-        if (options.ascii_identifiers)
+        if (options.ascii_only)
             name = to_ascii(name, true);
         return name;
     };
@@ -236,8 +213,8 @@ function OutputStream(options) {
 
     function print(str) {
         str = String(str);
-        var ch = get_full_char(str, 0);
-        var prev = get_full_char(last, last.length - 1);
+        var ch = str.charAt(0);
+        var prev = last.charAt(last.length - 1);
         if (might_need_semicolon) {
             might_need_semicolon = false;
 
@@ -301,10 +278,6 @@ function OutputStream(options) {
         last = str;
     };
 
-    var star = function(){
-        print("*");
-    }
-
     var space = options.beautify ? function() {
         print(" ");
     } : function() {
@@ -424,7 +397,6 @@ function OutputStream(options) {
         should_break    : function() { return options.width && this.current_width() >= options.width },
         newline         : newline,
         print           : print,
-        star            : star,
         space           : space,
         comma           : comma,
         colon           : colon,
@@ -444,10 +416,6 @@ function OutputStream(options) {
             }
             print(encoded);
         },
-        print_template_string_chars: function(str) {
-            var encoded = encode_string(str, '`').replace(/\${/g, "\\${");
-            return print(encoded.substr(1, encoded.length - 2));
-        },
         encode_string   : encode_string,
         next_indent     : next_indent,
         with_indent     : with_indent,
@@ -608,11 +576,6 @@ function OutputStream(options) {
         return false;
     });
 
-    PARENS(AST_Arrow, function(output){
-        var p = output.parent();
-        return p instanceof AST_PropAccess && p.expression === this;
-    });
-
     // same goes for an object literal, because otherwise it would be
     // interpreted as a block of code.
     PARENS(AST_Object, function(output){
@@ -622,29 +585,20 @@ function OutputStream(options) {
     PARENS(AST_Unary, function(output){
         var p = output.parent();
         return p instanceof AST_PropAccess && p.expression === this
-            || p instanceof AST_Call && p.expression === this
-            || p instanceof AST_Binary
-                && p.operator === "**"
-                && this instanceof AST_UnaryPrefix
-                && p.left === this
-                && this.operator !== "++"
-                && this.operator !== "--";
+            || p instanceof AST_Call && p.expression === this;
     });
 
-    PARENS(AST_Sequence, function(output){
+    PARENS(AST_Seq, function(output){
         var p = output.parent();
-        return p instanceof AST_Call                          // (foo, bar)() or foo(1, (2, 3), 4)
-            || p instanceof AST_Unary                         // !(foo, bar, baz)
-            || p instanceof AST_Binary                        // 1 + (2, 3) + 4 ==> 8
-            || p instanceof AST_VarDef                        // var a = (1, 2), b = a + a; ==> b == 4
-            || p instanceof AST_PropAccess                    // (1, {foo:2}).foo or (1, {foo:2})["foo"] ==> 2
-            || p instanceof AST_Array                         // [ 1, (2, 3), 4 ] ==> [ 1, 3, 4 ]
-            || p instanceof AST_ObjectProperty                // { foo: (1, 2) }.foo ==> 2
-            || p instanceof AST_Conditional                   /* (false, true) ? (a = 10, b = 20) : (c = 30)
-                                                               * ==> 20 (side effect, set a := 10 and b := 20) */
-            || p instanceof AST_Arrow                         // x => (x, x)
-            || p instanceof AST_DefaultAssign                 // x => (x = (0, function(){}))
-            || (p instanceof AST_Class && p.extends === this) // class D extends (calls++, C) {}
+        return p instanceof AST_Call             // (foo, bar)() or foo(1, (2, 3), 4)
+            || p instanceof AST_Unary            // !(foo, bar, baz)
+            || p instanceof AST_Binary           // 1 + (2, 3) + 4 ==> 8
+            || p instanceof AST_VarDef           // var a = (1, 2), b = a + a; ==> b == 4
+            || p instanceof AST_PropAccess       // (1, {foo:2}).foo or (1, {foo:2})["foo"] ==> 2
+            || p instanceof AST_Array            // [ 1, (2, 3), 4 ] ==> [ 1, 3, 4 ]
+            || p instanceof AST_ObjectProperty   // { foo: (1, 2) }.foo ==> 2
+            || p instanceof AST_Conditional      /* (false, true) ? (a = 10, b = 20) : (c = 30)
+                                                  * ==> 20 (side effect, set a := 10 and b := 20) */
         ;
     });
 
@@ -671,24 +625,6 @@ function OutputStream(options) {
         }
     });
 
-    PARENS(AST_Yield, function(output){
-        var p = output.parent();
-        // (yield 1) + (yield 2)
-        // a = yield 3
-        if (p instanceof AST_Binary && p.operator !== "=")
-            return true;
-        // (yield 1) ? yield 2 : yield 3
-        if (p instanceof AST_Conditional && p.condition === this)
-            return true;
-        // -(yield 4)
-        if (p instanceof AST_Unary)
-            return true;
-        // (yield x).foo
-        // (yield x)['foo']
-        if (p instanceof AST_PropAccess && p.expression === this)
-            return true;
-    });
-
     PARENS(AST_PropAccess, function(output){
         var p = output.parent();
         if (p instanceof AST_New && p.expression === this) {
@@ -741,7 +677,7 @@ function OutputStream(options) {
         }
     });
 
-    PARENS([ AST_Assign, AST_Conditional ], function(output){
+    PARENS([ AST_Assign, AST_Conditional ], function (output){
         var p = output.parent();
         // !(a = false) → true
         if (p instanceof AST_Unary)
@@ -758,9 +694,6 @@ function OutputStream(options) {
         // (a = foo)["prop"] —or— (a = foo).prop
         if (p instanceof AST_PropAccess && p.expression === this)
             return true;
-        // ({a, b} = {a: 1, b: 2}), a destructuring assignment
-        if (this instanceof AST_Assign && this.left instanceof AST_Destructuring && this.left.is_array === false)
-            return true;
     });
 
     /* -----[ PRINTERS ]----- */
@@ -769,28 +702,6 @@ function OutputStream(options) {
         output.print_string(self.value, self.quote);
         output.semicolon();
     });
-
-    DEFPRINT(AST_Expansion, function (self, output) {
-        output.print('...');
-        self.expression.print(output);
-    });
-
-    DEFPRINT(AST_Destructuring, function (self, output) {
-        output.print(self.is_array ? "[" : "{");
-        var first = true;
-        var len = self.names.length;
-        self.names.forEach(function (name, i) {
-            if (first) first = false; else { output.comma(); output.space(); }
-            name.print(output);
-            // If the final element is a hole, we need to make sure it
-            // doesn't look like a trailing comma, by inserting an actual
-            // trailing comma.
-            if (i === len - 1 && name instanceof AST_Hole)
-              output.comma();
-        })
-        output.print(self.is_array ? "]" : "}");
-    });
-
     DEFPRINT(AST_Debugger, function(self, output){
         output.print("debugger");
         output.semicolon();
@@ -915,11 +826,7 @@ function OutputStream(options) {
         output.with_parens(function(){
             self.init.print(output);
             output.space();
-            if (self instanceof AST_ForOf) {
-                output.print("of");
-            } else {
-                output.print("in");
-            }
+            output.print("in");
             output.space();
             self.object.print(output);
         });
@@ -941,19 +848,10 @@ function OutputStream(options) {
         var self = this;
         if (!nokeyword) {
             output.print("function");
-            if (this.is_generator) {
-                output.star();
-            }
-            if (self.name) {
-                output.space();
-            }
         }
-        if (self.name instanceof AST_Symbol) {
+        if (self.name) {
+            output.space();
             self.name.print(output);
-        } else if (nokeyword && self.name instanceof AST_Node) {
-            output.with_square(function() {
-                self.name.print(output); // Computed method name
-            });
         }
         output.with_parens(function(){
             self.argnames.forEach(function(arg, i){
@@ -968,56 +866,6 @@ function OutputStream(options) {
         self._do_print(output);
     });
 
-    DEFPRINT(AST_PrefixedTemplateString, function(self, output) {
-        self.prefix.print(output);
-        self.template_string.print(output);
-    });
-    DEFPRINT(AST_TemplateString, function(self, output) {
-        var is_tagged = output.parent() instanceof AST_PrefixedTemplateString;
-
-        output.print("`");
-        for (var i = 0; i < self.segments.length; i++) {
-            if (!(self.segments[i] instanceof AST_TemplateSegment)) {
-                output.print("${");
-                self.segments[i].print(output);
-                output.print("}");
-            } else if (is_tagged) {
-                output.print(self.segments[i].raw);
-            } else {
-                output.print_template_string_chars(self.segments[i].value);
-            }
-        }
-        output.print("`");
-    });
-
-    AST_Arrow.DEFMETHOD("_do_print", function(output){
-        var self = this;
-        var parent = output.parent();
-        var needs_parens = parent instanceof AST_Binary ||
-            parent instanceof AST_Unary ||
-            (parent instanceof AST_Call && self === parent.expression);
-        if (needs_parens) { output.print("(") }
-        if (self.argnames.length === 1 && self.argnames[0] instanceof AST_Symbol) {
-            self.argnames[0].print(output);
-        } else {
-            output.with_parens(function(){
-                self.argnames.forEach(function(arg, i){
-                    if (i) output.comma();
-                    arg.print(output);
-                });
-            });
-        }
-        output.space();
-        output.print('=>');
-        output.space();
-        if (self.body instanceof AST_Node) {
-            this.body.print(output);
-        } else {
-            print_bracketed(this.body, output);
-        }
-        if (needs_parens) { output.print(")") }
-    });
-
     /* -----[ exits ]----- */
     AST_Exit.DEFMETHOD("_do_print", function(output, kind){
         output.print(kind);
@@ -1034,17 +882,6 @@ function OutputStream(options) {
         self._do_print(output, "throw");
     });
 
-    /* -----[ yield ]----- */
-
-    DEFPRINT(AST_Yield, function(self, output){
-        var star = self.is_star ? "*" : "";
-        output.print("yield" + star);
-        if (self.expression) {
-            output.space();
-            self.expression.print(output);
-        }
-    });
-
     /* -----[ loop control ]----- */
     AST_LoopControl.DEFMETHOD("_do_print", function(output, kind){
         output.print(kind);
@@ -1065,7 +902,7 @@ function OutputStream(options) {
     function make_then(self, output) {
         var b = self.body;
         if (output.option("bracketize")
-            || output.option("ie8") && b instanceof AST_Do)
+            || !output.option("screw_ie8") && b instanceof AST_Do)
             return make_block(b, output);
         // The squeezer replaces "block"-s that contain only a single
         // statement with the statement itself; technically, the AST
@@ -1193,107 +1030,12 @@ function OutputStream(options) {
         if (!avoid_semicolon)
             output.semicolon();
     });
-    DEFPRINT(AST_Let, function(self, output){
-        self._do_print(output, "let");
-    });
     DEFPRINT(AST_Var, function(self, output){
         self._do_print(output, "var");
     });
     DEFPRINT(AST_Const, function(self, output){
         self._do_print(output, "const");
     });
-    DEFPRINT(AST_Import, function(self, output) {
-        output.print("import");
-        output.space();
-        if (self.imported_name) {
-            self.imported_name.print(output);
-        }
-        if (self.imported_name && self.imported_names) {
-            output.print(",");
-            output.space();
-        }
-        if (self.imported_names) {
-            if (self.imported_names.length === 1 && self.imported_names[0].foreign_name.name === "*") {
-                self.imported_names[0].print(output);
-            } else {
-                output.print("{");
-                self.imported_names.forEach(function (name_import, i) {
-                    output.space();
-                    name_import.print(output);
-                    if (i < self.imported_names.length - 1) {
-                        output.print(",");
-                        output.space();
-                    }
-                });
-                output.space();
-                output.print("}");
-            }
-        }
-        if (self.imported_name || self.imported_names) {
-            output.space();
-            output.print("from")
-            output.space();
-        }
-        self.module_name.print(output);
-        output.semicolon();
-    });
-
-    DEFPRINT(AST_NameImport, function(self, output) {
-        var definition = self.name.definition();
-        var names_are_different =
-            (definition && definition.mangled_name || self.name.name) !==
-            self.foreign_name.name;
-        if (names_are_different) {
-            output.print(self.foreign_name.name);
-            output.space();
-            output.print("as");
-            output.space();
-            self.name.print(output);
-        } else {
-            self.name.print(output);
-        }
-    });
-
-    DEFPRINT(AST_Export, function(self, output) {
-        output.print("export");
-        output.space();
-        if (self.is_default) {
-            output.print("default");
-            output.space();
-        }
-        if (self.exported_names) {
-            output.space();
-
-            if (self.exported_names.length === 1 && self.exported_names[0].name.name === "*") {
-                self.exported_names[0].print(output);
-            } else {
-                output.print("{");
-                self.exported_names.forEach(function (name_import, i) {
-                    output.space();
-                    name_import.print(output);
-                    if (i < self.exported_names.length - 1) {
-                        output.print(",");
-                        output.space();
-                    }
-                });
-                output.space();
-                output.print("}");
-            }
-            output.space();
-        }
-        else if (self.exported_value) {
-            self.exported_value.print(output);
-        } else if (self.exported_definition) {
-            self.exported_definition.print(output);
-        }
-        if (self.module_name) {
-            output.space();
-            output.print("from");
-            output.space();
-            self.module_name.print(output);
-        }
-        output.semicolon();
-    });
 
     function parenthesize_for_noin(node, output, noin) {
         if (!noin) node.print(output);
@@ -1341,19 +1083,18 @@ function OutputStream(options) {
         AST_Call.prototype._codegen(self, output);
     });
 
-    AST_Sequence.DEFMETHOD("_do_print", function(output){
-        this.expressions.forEach(function(node, index) {
-            if (index > 0) {
-                output.comma();
-                if (output.should_break()) {
-                    output.newline();
-                    output.indent();
-                }
+    AST_Seq.DEFMETHOD("_do_print", function(output){
+        this.car.print(output);
+        if (this.cdr) {
+            output.comma();
+            if (output.should_break()) {
+                output.newline();
+                output.indent();
             }
-            node.print(output);
-        });
+            this.cdr.print(output);
+        }
     });
-    DEFPRINT(AST_Sequence, function(self, output){
+    DEFPRINT(AST_Seq, function(self, output){
         self._do_print(output);
         // var p = output.parent();
         // if (p instanceof AST_Statement) {
@@ -1466,35 +1207,9 @@ function OutputStream(options) {
         });
         else output.print("{}");
     });
-    DEFPRINT(AST_Class, function(self, output){
-        output.print("class");
-        output.space();
-        if (self.name) {
-            self.name.print(output);
-            output.space();
-        }
-        if (self.extends) {
-            output.print("extends");
-            output.space();
-            self.extends.print(output);
-            output.space();
-        }
-        if (self.properties.length > 0) output.with_block(function(){
-            self.properties.forEach(function(prop, i){
-                if (i) {
-                    output.newline();
-                }
-                output.indent();
-                prop.print(output);
-            });
-            output.newline();
-        });
-        else output.print("{}");
-    });
-    DEFPRINT(AST_NewTarget, function(self, output) {
-        output.print("new.target");
-    });
-    AST_ObjectProperty.DEFMETHOD("print_property_name", function(key, quote, output) {
+    DEFPRINT(AST_ObjectKeyVal, function(self, output){
+        var key = self.key;
+        var quote = self.quote;
         if (output.option("quote_keys")) {
             output.print_string(key + "");
         } else if ((typeof key == "number"
@@ -1502,7 +1217,7 @@ function OutputStream(options) {
                     && +key + "" == key)
                    && parseFloat(key) >= 0) {
             output.print(make_num(key));
-        } else if (RESERVED_WORDS(key) ? !output.option("ie8") : is_identifier_string(key)) {
+        } else if (RESERVED_WORDS(key) ? output.option("screw_ie8") : is_identifier_string(key)) {
             if (quote && output.option("keep_quoted_props")) {
                 output.print_string(key, quote);
             } else {
@@ -1511,98 +1226,29 @@ function OutputStream(options) {
         } else {
             output.print_string(key, quote);
         }
-    });
-    DEFPRINT(AST_ObjectKeyVal, function(self, output){
-        function get_name(self) {
-            var def = self.definition();
-            return def ? def.mangled_name || def.name : self.name;
-        }
-
-        var allowShortHand = output.option("shorthand");
-        if (allowShortHand &&
-            self.value instanceof AST_Symbol &&
-            is_identifier_string(self.key) &&
-            get_name(self.value) === self.key
-        ) {
-            self.print_property_name(self.key, self.quote, output);
-
-        } else if (allowShortHand &&
-            self.value instanceof AST_DefaultAssign &&
-            self.value.left instanceof AST_Symbol &&
-            is_identifier_string(self.key) &&
-            get_name(self.value.left) === self.key
-        ) {
-            self.print_property_name(self.key, self.quote, output);
-            output.print("=");
-            self.value.right.print(output);
-        } else {
-            if (!(self.key instanceof AST_Node)) {
-                self.print_property_name(self.key, self.quote, output);
-            } else {
-                output.with_square(function() {
-                    self.key.print(output);
-                });
-            }
-            output.colon();
-            self.value.print(output);
-        }
-    });
-    AST_ObjectProperty.DEFMETHOD("_print_getter_setter", function(type, self, output) {
-        if (self.static) {
-            output.print("static");
-            output.space();
-        }
-        output.print(type);
-        output.space();
-        if (self.key instanceof AST_SymbolMethod) {
-            self.print_property_name(self.key.name, self.quote, output);
-        } else {
-            output.with_square(function() {
-                self.key.print(output);
-            });
-        }
-        self.value._do_print(output, true);
+        output.colon();
+        self.value.print(output);
     });
     DEFPRINT(AST_ObjectSetter, function(self, output){
-        self._print_getter_setter("set", self, output);
-    });
-    DEFPRINT(AST_ObjectGetter, function(self, output){
-        self._print_getter_setter("get", self, output);
-    });
-    DEFPRINT(AST_ConciseMethod, function(self, output){
-        if (self.static) {
-            output.print("static");
-            output.space();
-        }
-        if (self.is_generator) {
-            output.print("*");
-        }
-        if (self.key instanceof AST_SymbolMethod) {
-            self.print_property_name(self.key.name, self.quote, output);
-        } else {
-            output.with_square(function() {
-                self.key.print(output);
-            });
-        }
+        output.print("set");
+        output.space();
+        self.key.print(output);
         self.value._do_print(output, true);
     });
-    AST_Symbol.DEFMETHOD("_do_print", function(output){
-        var def = this.definition();
-        output.print_name(def ? def.mangled_name || def.name : this.name);
+    DEFPRINT(AST_ObjectGetter, function(self, output){
+        output.print("get");
+        output.space();
+        self.key.print(output);
+        self.value._do_print(output, true);
     });
-    DEFPRINT(AST_Symbol, function (self, output) {
-        self._do_print(output);
-    });
-    DEFPRINT(AST_SymbolDeclaration, function(self, output){
-        self._do_print(output);
+    DEFPRINT(AST_Symbol, function(self, output){
+        var def = self.definition();
+        output.print_name(def ? def.mangled_name || def.name : self.name);
     });
     DEFPRINT(AST_Hole, noop);
     DEFPRINT(AST_This, function(self, output){
         output.print("this");
     });
-    DEFPRINT(AST_Super, function(self, output){
-        output.print("super");
-    });
     DEFPRINT(AST_Constant, function(self, output){
         output.print(self.getValue());
     });

lib/propmangle.js

@@ -43,36 +43,19 @@
 
 "use strict";
 
-function find_builtins(reserved) {
-
-    // Compatibility fix for some standard defined globals not defined on every js environment
-    var new_globals = ["Symbol", "Map", "Promise", "Proxy", "Reflect", "Set", "WeakMap", "WeakSet"];
-    var objects = {};
-
-    new_globals.forEach(function (new_global) {
-        objects[new_global] = global[new_global] || new Function();
-    });
-
+function find_builtins() {
     // NaN will be included due to Number.NaN
-    [
+    var a = [
         "null",
         "true",
         "false",
         "Infinity",
         "-Infinity",
         "undefined",
-    ].forEach(add);
+    ];
     [ Object, Array, Function, Number,
       String, Boolean, Error, Math,
-      Date, RegExp, objects.Symbol, ArrayBuffer,
-      DataView, decodeURI, decodeURIComponent,
-      encodeURI, encodeURIComponent, eval, EvalError,
-      Float32Array, Float64Array, Int8Array, Int16Array,
-      Int32Array, isFinite, isNaN, JSON, objects.Map, parseFloat,
-      parseInt, objects.Promise, objects.Proxy, RangeError, ReferenceError,
-      objects.Reflect, objects.Set, SyntaxError, TypeError, Uint8Array,
-      Uint8ClampedArray, Uint16Array, Uint32Array, URIError,
-      objects.WeakMap, objects.WeakSet
+      Date, RegExp
     ].forEach(function(ctor){
         Object.getOwnPropertyNames(ctor).map(add);
         if (ctor.prototype) {
@@ -80,23 +63,24 @@ function find_builtins(reserved) {
         }
     });
     function add(name) {
-        push_uniq(reserved, name);
+        push_uniq(a, name);
     }
+    return a;
 }
 
 function mangle_properties(ast, options) {
     options = defaults(options, {
-        builtins: false,
         cache: null,
         debug: false,
-        keep_quoted: false,
+        ignore_quoted: false,
         only_cache: false,
         regex: null,
         reserved: null,
     });
 
-    var reserved = options.reserved || [];
-    if (!options.builtins) find_builtins(reserved);
+    var reserved = options.reserved;
+    if (reserved == null)
+        reserved = find_builtins();
 
     var cache = options.cache;
     if (cache == null) {
@@ -107,12 +91,12 @@ function mangle_properties(ast, options) {
     }
 
     var regex = options.regex;
-    var keep_quoted = options.keep_quoted;
+    var ignore_quoted = options.ignore_quoted;
 
     // note debug is either false (disabled), or a string of the debug suffix to use (enabled).
     // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true'
     // the same as passing an empty string.
-    var debug = options.debug !== false;
+    var debug = (options.debug !== false);
     var debug_name_suffix;
     if (debug) {
         debug_name_suffix = (options.debug === true ? "" : options.debug);
@@ -120,12 +104,12 @@ function mangle_properties(ast, options) {
 
     var names_to_mangle = [];
     var unmangleable = [];
-    var to_keep = {};
+    var ignored = {};
 
     // step 1: find candidates to mangle
     ast.walk(new TreeWalker(function(node){
         if (node instanceof AST_ObjectKeyVal) {
-            add(node.key, keep_quoted && node.quote);
+            add(node.key, ignore_quoted && node.quote);
         }
         else if (node instanceof AST_ObjectProperty) {
             // setter or getter, since KeyVal is handled above
@@ -135,17 +119,14 @@ function mangle_properties(ast, options) {
             add(node.property);
         }
         else if (node instanceof AST_Sub) {
-            addStrings(node.property, keep_quoted);
-        }
-        else if (node instanceof AST_ConciseMethod) {
-            add(node.name.name);
+            addStrings(node.property, ignore_quoted);
         }
     }));
 
     // step 2: transform the tree, renaming properties
     return ast.transform(new TreeTransformer(function(node){
         if (node instanceof AST_ObjectKeyVal) {
-            if (!(keep_quoted && node.quote))
+            if (!(ignore_quoted && node.quote))
                 node.key = mangle(node.key);
         }
         else if (node instanceof AST_ObjectProperty) {
@@ -156,14 +137,9 @@ function mangle_properties(ast, options) {
             node.property = mangle(node.property);
         }
         else if (node instanceof AST_Sub) {
-            if (!keep_quoted)
+            if (!ignore_quoted)
                 node.property = mangleStrings(node.property);
         }
-        else if (node instanceof AST_ConciseMethod) {
-            if (should_mangle(node.name.name)) {
-                node.name.name = mangle(node.name.name);
-            }
-        }
         // else if (node instanceof AST_String) {
         //     if (should_mangle(node.value)) {
         //         AST_Node.warn(
@@ -191,16 +167,16 @@ function mangle_properties(ast, options) {
     }
 
     function should_mangle(name) {
-        if (keep_quoted && name in to_keep) return false;
+        if (ignore_quoted && name in ignored) return false;
         if (regex && !regex.test(name)) return false;
         if (reserved.indexOf(name) >= 0) return false;
         return cache.props.has(name)
             || names_to_mangle.indexOf(name) >= 0;
     }
 
-    function add(name, keep) {
-        if (keep) {
-            to_keep[name] = true;
+    function add(name, ignore) {
+        if (ignore) {
+            ignored[name] = true;
             return;
         }
 
@@ -223,19 +199,19 @@ function mangle_properties(ast, options) {
                 // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_.
                 var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_";
 
-                if (can_mangle(debug_mangled) && !(keep_quoted && debug_mangled in to_keep)) {
+                if (can_mangle(debug_mangled) && !(ignore_quoted && debug_mangled in ignored)) {
                     mangled = debug_mangled;
                 }
             }
 
             // either debug mode is off, or it is on and we could not use the mangled name
             if (!mangled) {
-                // Note: `can_mangle()` does not check if the name collides with the `to_keep` set
-                // (filled with quoted properties when `keep_quoted` is set). Make sure we add this
+                // note can_mangle() does not check if the name collides with the 'ignored' set
+                // (filled with quoted properties when ignore_quoted set). Make sure we add this
                 // check so we don't collide with a quoted name.
                 do {
                     mangled = base54(++cache.cname);
-                } while (!can_mangle(mangled) || keep_quoted && mangled in to_keep);
+                } while (!can_mangle(mangled) || (ignore_quoted && mangled in ignored));
             }
 
             cache.props.set(name, mangled);
@@ -243,17 +219,17 @@ function mangle_properties(ast, options) {
         return mangled;
     }
 
-    function addStrings(node, keep) {
+    function addStrings(node, ignore) {
         var out = {};
         try {
             (function walk(node){
                 node.walk(new TreeWalker(function(node){
-                    if (node instanceof AST_Sequence) {
-                        walk(node.expressions[node.expressions.length - 1]);
+                    if (node instanceof AST_Seq) {
+                        walk(node.cdr);
                         return true;
                     }
                     if (node instanceof AST_String) {
-                        add(node.value, keep);
+                        add(node.value, ignore);
                         return true;
                     }
                     if (node instanceof AST_Conditional) {
@@ -271,9 +247,8 @@ function mangle_properties(ast, options) {
 
     function mangleStrings(node) {
         return node.transform(new TreeTransformer(function(node){
-            if (node instanceof AST_Sequence) {
-                var last = node.expressions.length - 1;
-                node.expressions[last] = mangleStrings(node.expressions[last]);
+            if (node instanceof AST_Seq) {
+                node.cdr = mangleStrings(node.cdr);
             }
             else if (node instanceof AST_String) {
                 node.value = mangle(node.value);
@@ -285,4 +260,5 @@ function mangle_properties(ast, options) {
             return node;
         }));
     }
+
 }

lib/scope.js

@@ -49,9 +49,7 @@ function SymbolDef(scope, index, orig) {
     this.scope = scope;
     this.references = [];
     this.global = false;
-    this.export = false;
     this.mangled_name = null;
-    this.object_destructuring_arg = false;
     this.undeclared = false;
     this.index = index;
     this.id = SymbolDef.next_id++;
@@ -64,17 +62,11 @@ SymbolDef.prototype = {
         if (!options) options = {};
 
         return (this.global && !options.toplevel)
-            || this.export
-            || this.object_destructuring_arg
             || this.undeclared
             || (!options.eval && (this.scope.uses_eval || this.scope.uses_with))
             || (options.keep_fnames
                 && (this.orig[0] instanceof AST_SymbolLambda
-                    || this.orig[0] instanceof AST_SymbolDefun))
-            || this.orig[0] instanceof AST_SymbolMethod
-            || (options.keep_classnames
-                && (this.orig[0] instanceof AST_SymbolClass
-                    || this.orig[0] instanceof AST_SymbolDefClass));
+                    || this.orig[0] instanceof AST_SymbolDefun));
     },
     mangle: function(options) {
         var cache = options.cache && options.cache.props;
@@ -84,7 +76,7 @@ SymbolDef.prototype = {
         else if (!this.mangled_name && !this.unmangleable(options)) {
             var s = this.scope;
             var sym = this.orig[0];
-            if (options.ie8 && sym instanceof AST_SymbolLambda)
+            if (!options.screw_ie8 && sym instanceof AST_SymbolLambda)
                 s = s.parent_scope;
             var def;
             if (this.defun && (def = this.defun.variables.get(this.name))) {
@@ -101,7 +93,7 @@ SymbolDef.prototype = {
 AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     options = defaults(options, {
         cache: null,
-        ie8: false,
+        screw_ie8: true,
     });
 
     // pass 1: setup scope chaining and handle definitions
@@ -109,29 +101,15 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     var scope = self.parent_scope = null;
     var labels = new Dictionary();
     var defun = null;
-    var in_destructuring = null;
-    var in_export = false;
-    var in_block = 0;
     var tw = new TreeWalker(function(node, descend){
-        if (node.is_block_scope()) {
+        if (node instanceof AST_Catch) {
             var save_scope = scope;
             scope = new AST_Scope(node);
             scope.init_scope_vars(save_scope);
-            if (!(node instanceof AST_Scope)) {
-                scope.uses_with = save_scope.uses_with;
-                scope.uses_eval = save_scope.uses_eval;
-                scope.directives = save_scope.directives;
-            }
             descend();
             scope = save_scope;
             return true;
         }
-        if (node instanceof AST_Destructuring && node.is_array === false) {
-            in_destructuring = node;  // These don't nest
-            descend();
-            in_destructuring = null;
-            return true;
-        }
         if (node instanceof AST_Scope) {
             node.init_scope_vars(scope);
             var save_scope = scope;
@@ -145,22 +123,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             labels = save_labels;
             return true;        // don't descend again in TreeWalker
         }
-        if (node instanceof AST_Export) {
-            in_export = true;
-            descend();
-            in_export = false;
-            return true;
-        }
-        if (node instanceof AST_BlockStatement
-            || node instanceof AST_Switch
-            || node instanceof AST_Try
-            || node instanceof AST_Catch
-            || node instanceof AST_Finally) {
-            in_block++;
-            descend();
-            in_block--;
-            return true;
-        }
         if (node instanceof AST_LabeledStatement) {
             var l = node.label;
             if (labels.has(l.name)) {
@@ -179,15 +141,12 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
         if (node instanceof AST_Symbol) {
             node.scope = scope;
         }
-        if (node instanceof AST_SymbolFunarg) {
-            node.object_destructuring_arg = !!in_destructuring;
-        }
         if (node instanceof AST_Label) {
             node.thedef = node;
             node.references = [];
         }
         if (node instanceof AST_SymbolLambda) {
-            defun.def_function(node, in_export, in_block);
+            defun.def_function(node);
         }
         else if (node instanceof AST_SymbolDefun) {
             // Careful here, the scope where this should be defined is
@@ -195,28 +154,11 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             // scope when we encounter the AST_Defun node (which is
             // instanceof AST_Scope) but we get to the symbol a bit
             // later.
-            var parent_lambda = defun.parent_scope;
-            while (parent_lambda.is_block_scope()) {
-                parent_lambda = parent_lambda.parent_scope;
-            }
-            (node.scope = parent_lambda).def_function(node, in_export, in_block);
-        }
-        else if (node instanceof AST_SymbolClass) {
-            defun.def_variable(node, in_export, in_block);
-        }
-        else if (node instanceof AST_SymbolImport) {
-            scope.def_variable(node, in_export, in_block);
-        }
-        else if (node instanceof AST_SymbolDefClass) {
-            // This deals with the name of the class being available
-            // inside the class.
-            (node.scope = defun.parent_scope).def_function(node, in_export, in_block);
+            (node.scope = defun.parent_scope).def_function(node);
         }
         else if (node instanceof AST_SymbolVar
-            || node instanceof AST_SymbolLet
             || node instanceof AST_SymbolConst) {
-            var def = ((node instanceof AST_SymbolBlockDeclaration) ? scope : defun).def_variable(node, in_export, in_block);
-            def.destructuring = in_destructuring;
+            defun.def_variable(node);
             if (defun !== scope) {
                 node.mark_enclosed(options);
                 var def = scope.find_variable(node);
@@ -227,7 +169,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             }
         }
         else if (node instanceof AST_SymbolCatch) {
-            scope.def_variable(node, in_export, in_block).defun = defun;
+            scope.def_variable(node).defun = defun;
         }
         else if (node instanceof AST_LabelRef) {
             var sym = labels.get(node.name);
@@ -243,7 +185,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
 
     // pass 2: find back references and eval
     var func = null;
-    var cls = null;
     var globals = self.globals = new Dictionary();
     var tw = new TreeWalker(function(node, descend){
         if (node instanceof AST_Lambda) {
@@ -253,13 +194,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             func = prev_func;
             return true;
         }
-        if (node instanceof AST_Class) {
-            var prev_cls = cls;
-            cls = node;
-            descend();
-            cls = prev_cls;
-            return true;
-        }
         if (node instanceof AST_LoopControl && node.label) {
             node.label.thedef.references.push(node);
             return true;
@@ -286,7 +220,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     self.walk(tw);
 
     // pass 3: fix up any scoping issue with IE8
-    if (options.ie8) {
+    if (!options.screw_ie8) {
         self.walk(new TreeWalker(function(node, descend) {
             if (node instanceof AST_SymbolCatch) {
                 var name = node.name;
@@ -331,27 +265,10 @@ AST_Scope.DEFMETHOD("init_scope_vars", function(parent_scope){
     this.cname = -1;                    // the current index for mangling functions/variables
 });
 
-AST_Node.DEFMETHOD("is_block_scope", function(){
-    return false; // Behaviour will be overridden by AST_Block
-});
-
-AST_Block.DEFMETHOD("is_block_scope", function(){
-    return (
-        !(this instanceof AST_Lambda) &&
-        !(this instanceof AST_Toplevel) &&
-        !(this instanceof AST_Class) &&
-        !(this instanceof AST_SwitchBranch)
-    );
-});
-
-AST_IterationStatement.DEFMETHOD("is_block_scope", function(){
-     return true;
-});
-
 AST_Lambda.DEFMETHOD("init_scope_vars", function(){
     AST_Scope.prototype.init_scope_vars.apply(this, arguments);
     this.uses_arguments = false;
-    this.def_variable(new AST_SymbolConst({
+    this.def_variable(new AST_SymbolVar({
         name: "arguments",
         start: this.start,
         end: this.end
@@ -384,24 +301,16 @@ AST_Scope.DEFMETHOD("find_variable", function(name){
         || (this.parent_scope && this.parent_scope.find_variable(name));
 });
 
-AST_Scope.DEFMETHOD("def_function", function(symbol, in_export, in_block){
-    this.functions.set(symbol.name, this.def_variable(symbol, in_export, in_block));
+AST_Scope.DEFMETHOD("def_function", function(symbol){
+    this.functions.set(symbol.name, this.def_variable(symbol));
 });
 
-AST_Scope.DEFMETHOD("def_variable", function(symbol, in_export, in_block){
+AST_Scope.DEFMETHOD("def_variable", function(symbol){
     var def;
     if (!this.variables.has(symbol.name)) {
         def = new SymbolDef(this, this.variables.size(), symbol);
         this.variables.set(symbol.name, def);
-        def.object_destructuring_arg = symbol.object_destructuring_arg;
-        if (in_export) {
-            def.export = true;
-        }
-        if (in_block && symbol instanceof AST_SymbolBlockDeclaration) {
-            def.global = false;
-        } else {
-            def.global = !this.parent_scope;
-        }
+        def.global = !this.parent_scope;
     } else {
         def = this.variables.get(symbol.name);
         def.orig.push(symbol);
@@ -416,8 +325,8 @@ AST_Scope.DEFMETHOD("next_mangled", function(options){
         if (!is_identifier(m)) continue; // skip over "do"
 
         // https://github.com/mishoo/UglifyJS2/issues/242 -- do not
-        // shadow a name reserved from mangling.
-        if (options.reserved.indexOf(m) >= 0) continue;
+        // shadow a name excepted from mangling.
+        if (options.except.indexOf(m) >= 0) continue;
 
         // we must ensure that the mangled name does not shadow a name
         // from some parent scope that is referenced in this or in
@@ -449,13 +358,7 @@ AST_Function.DEFMETHOD("next_mangled", function(options, def){
 });
 
 AST_Symbol.DEFMETHOD("unmangleable", function(options){
-    var def = this.definition();
-    return def && def.unmangleable(options);
-});
-
-// property accessors are not mangleable
-AST_SymbolAccessor.DEFMETHOD("unmangleable", function(){
-    return true;
+    return this.definition().unmangleable(options);
 });
 
 // labels are always mangleable
@@ -491,10 +394,10 @@ AST_Symbol.DEFMETHOD("global", function(){
 AST_Toplevel.DEFMETHOD("_default_mangler_options", function(options){
     return defaults(options, {
         eval        : false,
-        ie8         : false,
-        keep_classnames: false,
+        except      : [],
         keep_fnames : false,
-        reserved    : [],
+        screw_ie8   : true,
+        sort        : false, // Ignored. Flag retained for backwards compatibility.
         toplevel    : false,
     });
 });
@@ -503,7 +406,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
     options = this._default_mangler_options(options);
 
     // Never mangle arguments
-    options.reserved.push('arguments');
+    options.except.push('arguments');
 
     // We only need to mangle declaration nodes.  Special logic wired
     // into the code generator will display the mangled name if it's
@@ -514,7 +417,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
 
     if (options.cache) {
         this.globals.each(function(symbol){
-            if (options.reserved.indexOf(symbol.name) < 0) {
+            if (options.except.indexOf(symbol.name) < 0) {
                 to_mangle.push(symbol);
             }
         });
@@ -531,7 +434,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
         if (node instanceof AST_Scope) {
             var p = tw.parent(), a = [];
             node.variables.each(function(symbol){
-                if (options.reserved.indexOf(symbol.name) < 0) {
+                if (options.except.indexOf(symbol.name) < 0) {
                     a.push(symbol);
                 }
             });
@@ -544,19 +447,13 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
             node.mangled_name = name;
             return true;
         }
-        var mangle_with_block_scope =
-            (!options.ie8 && node instanceof AST_SymbolCatch) ||
-            node instanceof AST_SymbolBlockDeclaration;
-        if (mangle_with_block_scope) {
+        if (options.screw_ie8 && node instanceof AST_SymbolCatch) {
             to_mangle.push(node.definition());
             return;
         }
     });
     this.walk(tw);
-    to_mangle.forEach(function(def){
-        if (def.destructuring && !def.destructuring.is_array) return;
-        def.mangle(options);
-    });
+    to_mangle.forEach(function(def){ def.mangle(options) });
 
     if (options.cache) {
         options.cache.cname = this.cname;
@@ -607,27 +504,21 @@ AST_Toplevel.DEFMETHOD("compute_char_frequency", function(options){
         else if (node instanceof AST_With)
             base54.consider("with");
         else if (node instanceof AST_ObjectSetter)
-            base54.consider("set" + (typeof node.key === "string" ? node.key : ""));
+            base54.consider("set" + node.key);
         else if (node instanceof AST_ObjectGetter)
-            base54.consider("get" + (typeof node.key === "string" ? node.key : ""));
-        else if (node instanceof AST_ObjectKeyVal && typeof node.key === "string")
-            base54.consider(node.key);
-        else if (node instanceof AST_ConciseMethod && typeof node.key === "string")
+            base54.consider("get" + node.key);
+        else if (node instanceof AST_ObjectKeyVal)
             base54.consider(node.key);
         else if (node instanceof AST_New)
             base54.consider("new");
         else if (node instanceof AST_This)
             base54.consider("this");
-        else if (node instanceof AST_Super)
-            base54.consider("super");
         else if (node instanceof AST_Try)
             base54.consider("try");
         else if (node instanceof AST_Catch)
             base54.consider("catch");
         else if (node instanceof AST_Finally)
             base54.consider("finally");
-        else if (node instanceof AST_Yield)
-            base54.consider("yield");
         else if (node instanceof AST_Symbol && node.unmangleable(options))
             base54.consider(node.name);
         else if (node instanceof AST_Unary || node instanceof AST_Binary)
@@ -677,3 +568,89 @@ var base54 = (function() {
     };
     return base54;
 })();
+
+AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
+    options = defaults(options, {
+        assign_to_global : true,
+        eval             : true,
+        func_arguments   : true,
+        nested_defuns    : true,
+        undeclared       : false, // this makes a lot of noise
+        unreferenced     : true,
+    });
+    var tw = new TreeWalker(function(node){
+        if (options.undeclared
+            && node instanceof AST_SymbolRef
+            && node.undeclared())
+        {
+            // XXX: this also warns about JS standard names,
+            // i.e. Object, Array, parseInt etc.  Should add a list of
+            // exceptions.
+            AST_Node.warn("Undeclared symbol: {name} [{file}:{line},{col}]", {
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.assign_to_global)
+        {
+            var sym = null;
+            if (node instanceof AST_Assign && node.left instanceof AST_SymbolRef)
+                sym = node.left;
+            else if (node instanceof AST_ForIn && node.init instanceof AST_SymbolRef)
+                sym = node.init;
+            if (sym
+                && (sym.undeclared()
+                    || (sym.global() && sym.scope !== sym.definition().scope))) {
+                AST_Node.warn("{msg}: {name} [{file}:{line},{col}]", {
+                    msg: sym.undeclared() ? "Accidental global?" : "Assignment to global",
+                    name: sym.name,
+                    file: sym.start.file,
+                    line: sym.start.line,
+                    col: sym.start.col
+                });
+            }
+        }
+        if (options.eval
+            && node instanceof AST_SymbolRef
+            && node.undeclared()
+            && node.name == "eval") {
+            AST_Node.warn("Eval is used [{file}:{line},{col}]", node.start);
+        }
+        if (options.unreferenced
+            && (node instanceof AST_SymbolDeclaration || node instanceof AST_Label)
+            && !(node instanceof AST_SymbolCatch)
+            && node.unreferenced()) {
+            AST_Node.warn("{type} {name} is declared but not referenced [{file}:{line},{col}]", {
+                type: node instanceof AST_Label ? "Label" : "Symbol",
+                name: node.name,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.func_arguments
+            && node instanceof AST_Lambda
+            && node.uses_arguments) {
+            AST_Node.warn("arguments used in function {name} [{file}:{line},{col}]", {
+                name: node.name ? node.name.name : "anonymous",
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+        if (options.nested_defuns
+            && node instanceof AST_Defun
+            && !(tw.parent() instanceof AST_Scope)) {
+            AST_Node.warn("Function {name} declared in nested statement \"{type}\" [{file}:{line},{col}]", {
+                name: node.name.name,
+                type: tw.parent().TYPE,
+                file: node.start.file,
+                line: node.start.line,
+                col: node.start.col
+            });
+        }
+    });
+    this.walk(tw);
+});

lib/transform.js

@@ -163,18 +163,10 @@ TreeTransformer.prototype = new TreeWalker;
         if (self.value) self.value = self.value.transform(tw);
     });
 
-    _(AST_Destructuring, function(self, tw) {
-        self.names = do_list(self.names, tw);
-    });
-
     _(AST_Lambda, function(self, tw){
         if (self.name) self.name = self.name.transform(tw);
         self.argnames = do_list(self.argnames, tw);
-        if (self.body instanceof AST_Node) {
-            self.body = self.body.transform(tw);
-        } else {
-            self.body = do_list(self.body, tw);
-        }
+        self.body = do_list(self.body, tw);
     });
 
     _(AST_Call, function(self, tw){
@@ -182,8 +174,9 @@ TreeTransformer.prototype = new TreeWalker;
         self.args = do_list(self.args, tw);
     });
 
-    _(AST_Sequence, function(self, tw){
-        self.expressions = do_list(self.expressions, tw);
+    _(AST_Seq, function(self, tw){
+        self.car = self.car.transform(tw);
+        self.cdr = self.cdr.transform(tw);
     });
 
     _(AST_Dot, function(self, tw){
@@ -195,10 +188,6 @@ TreeTransformer.prototype = new TreeWalker;
         self.property = self.property.transform(tw);
     });
 
-    _(AST_Yield, function(self, tw){
-        if (self.expression) self.expression = self.expression.transform(tw);
-    });
-
     _(AST_Unary, function(self, tw){
         self.expression = self.expression.transform(tw);
     });
@@ -223,32 +212,7 @@ TreeTransformer.prototype = new TreeWalker;
     });
 
     _(AST_ObjectProperty, function(self, tw){
-        if (self.key instanceof AST_Node) {
-            self.key = self.key.transform(tw);
-        }
         self.value = self.value.transform(tw);
     });
 
-    _(AST_Class, function(self, tw){
-        if (self.name) self.name = self.name.transform(tw);
-        if (self.extends) self.extends = self.extends.transform(tw);
-        self.properties = do_list(self.properties, tw);
-    });
-
-    _(AST_Expansion, function(self, tw){
-        self.expression = self.expression.transform(tw);
-    });
-
-    _(AST_TemplateString, function(self, tw) {
-        for (var i = 0; i < self.segments.length; i++) {
-            if (!(self.segments[i] instanceof AST_TemplateSegment)) {
-                self.segments[i] = self.segments[i].transform(tw);
-            }
-        }
-    });
-
-    _(AST_PrefixedTemplateString, function(self, tw) {
-        self.template_string = self.template_string.transform(tw);
-    });
-
 })();

lib/utils.js

@@ -346,7 +346,7 @@ function first_in_statement(stack) {
     for (var i = 0, p; p = stack.parent(i); i++) {
         if (p instanceof AST_Statement && p.body === node)
             return true;
-        if ((p instanceof AST_Sequence      && p.expressions[0] === node) ||
+        if ((p instanceof AST_Seq           && p.car === node        ) ||
             (p instanceof AST_Call          && p.expression === node && !(p instanceof AST_New) ) ||
             (p instanceof AST_Dot           && p.expression === node ) ||
             (p instanceof AST_Sub           && p.expression === node ) ||

package.json

@@ -1,10 +1,10 @@
 {
-  "name": "uglify-es",
+  "name": "uglify-js",
   "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
   "homepage": "http://lisperator.net/uglifyjs",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.0.2",
+  "version": "2.8.26",
   "engines": {
     "node": ">=0.8.0"
   },
@@ -29,14 +29,11 @@
     "LICENSE"
   ],
   "dependencies": {
-    "commander": "~2.9.0",
-    "source-map": "~0.5.1"
+    "source-map": "~0.5.1",
+    "yargs": "~3.10.0"
   },
   "devDependencies": {
-    "acorn": "~0.6.0",
-    "escodegen": "~1.3.3",
-    "esfuzz": "~0.3.1",
-    "estraverse": "~1.5.1",
+    "acorn": "~5.0.3",
     "mocha": "~2.3.4"
   },
   "optionalDependencies": {

test/benchmark.js

@@ -7,7 +7,7 @@ var createHash = require("crypto").createHash;
 var fork = require("child_process").fork;
 var args = process.argv.slice(2);
 if (!args.length) {
-    args.push("-mc");
+    args.push("-mc", "warnings=false");
 }
 args.push("--stats");
 var urls = [
@@ -29,11 +29,11 @@ function done() {
             var info = results[url];
             console.log();
             console.log(url);
+            console.log(info.log);
             var elapsed = 0;
-            console.log(info.log.replace(/Elapsed: ([0-9]+)\s*/g, function(match, time) {
-                elapsed += 1e-3 * parseInt(time);
-                return "";
-            }));
+            info.log.replace(/: ([0-9]+\.[0-9]{3})s/g, function(match, time) {
+                elapsed += parseFloat(time);
+            });
             console.log("Run-time:", elapsed.toFixed(3), "s");
             console.log("Original:", info.input, "bytes");
             console.log("Uglified:", info.output, "bytes");

test/compress/angular-inject.js

@@ -0,0 +1,67 @@
+ng_inject_defun: {
+    options = {
+        angular: true
+    };
+    input: {
+        /*@ngInject*/
+        function Controller(dependency) {
+            return dependency;
+        }
+    }
+    expect: {
+        function Controller(dependency) {
+            return dependency;
+        }
+        Controller.$inject=['dependency']
+    }
+}
+
+ng_inject_assignment: {
+    options = {
+        angular: true
+    };
+    input: {
+        /*@ngInject*/
+        var Controller = function(dependency) {
+            return dependency;
+        }
+    }
+    expect: {
+        var Controller = function(dependency) {
+            return dependency;
+        }
+        Controller.$inject=['dependency']
+    }
+}
+
+ng_inject_inline: {
+    options = {
+        angular: true
+    };
+    input: {
+        angular.module('a').
+            factory('b',
+                /*@ngInject*/
+                function(dependency) {
+                    return dependency;
+                }).
+            directive('c',
+                /*@ngInject*/
+                function(anotherDependency) {
+                    return anotherDependency;
+                })
+    }
+    expect: {
+        angular.module('a').
+            factory('b',[
+                'dependency',
+                function(dependency) {
+                    return dependency;
+                }]).
+            directive('c',[
+                'anotherDependency',
+                function(anotherDependency) {
+                    return anotherDependency;
+                }])
+    }
+}

test/compress/arrays.js

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

test/compress/arrow.js

@@ -1,137 +0,0 @@
-arrow_functions_without_body: {
-    input: {
-        var a1 = () => 42;
-        var a2 = (p) => p;
-        var a3 = p => p;
-        var a4 = (...p) => p;
-        var a5 = (b, c) => b + c;
-        var a6 = (b, ...c) => b + c[0];
-        var a7 = (...b) => b.join();
-    }
-    expect: {
-        var a1 = () => 42;
-        var a2 = (p) => p;
-        var a3 = p => p;
-        var a4 = (...p) => p;
-        var a5 = (b, c) => b + c;
-        var a6 = (b, ...c) => b + c[0];
-        var a7 = (...b) => b.join();
-    }
-}
-
-arrow_functions_with_body: {
-    input: {
-        var a1 = () => {
-            var a = 42 * Math.random();
-            return a;
-        };
-        var a2 = (p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a3 = p => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a4 = (...p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a5 = (b, c) => {
-            var result = b * c + b / c;
-            return result
-        };
-        var a6 = (b, ...c) => {
-            var result = b;
-            for (var i = 0; i < c.length; i++)
-                result += c[i];
-            return result
-        };
-        var a7 = (...b) => {
-            b.join();
-        }
-    }
-    expect: {
-        var a1 = () => {
-            var a = 42 * Math.random();
-            return a;
-        };
-        var a2 = (p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a3 = p => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a4 = (...p) => {
-            var a = Math.random() * p;
-            return a;
-        };
-        var a5 = (b, c) => {
-            var result = b * c + b / c;
-            return result
-        };
-        var a6 = (b, ...c) => {
-            var result = b;
-            for (var i = 0; i < c.length; i++)
-                result += c[i];
-            return result
-        };
-        var a7 = (...b) => {
-            b.join();
-        };
-    }
-}
-
-arrow_function_with_single_parameter_with_default: {
-    input: {
-        var foo = (a = 0) => doSomething(a);
-    }
-    expect_exact: "var foo=(a=0)=>doSomething(a);"
-}
-
-arrow_binding_pattern: {
-    input: {
-        var foo = ([]) => "foo";
-        var bar = ({}) => "bar";
-        var with_default = (foo = "default") => foo;
-        var object_with_default = ({foo = "default", bar: baz = "default"}) => foo;
-        var array_after_spread = (...[foo]) => foo;
-        var array_after_spread = (...{foo}) => foo;
-        var computed = ({ [compute()]: x }) => {};
-        var array_hole = ([, , ...x] = [1, 2]) => {};
-        var object_trailing_elision = ({foo,}) => {};
-        var spread_empty_array = (...[]) => "foo";
-        var spread_empty_object = (...{}) => "foo";
-    }
-    expect: {
-        var foo = ([]) => "foo";
-        var bar = ({}) => "bar";
-        var with_default = (foo = "default") => foo;
-        var object_with_default = ({foo = "default", bar: baz = "default"}) => foo;
-        var array_after_spread = (...[foo]) => foo;
-        var array_after_spread = (...{foo}) => foo;
-        var computed = ({ [compute()]: x }) => {};
-        var array_hole = ([, , ...x] = [1, 2]) => {};
-        var object_trailing_elision = ({foo,}) => {};
-        var spread_empty_array = (...[]) => "foo";
-        var spread_empty_object = (...{}) => "foo";
-    }
-}
-
-arrow_binding_pattern_strict: {
-    input: {
-        var foo = ([,]) => "foo";
-    }
-    expect_exact: 'var foo=([,])=>"foo";'
-}
-
-arrow_with_regexp: {
-    input: {
-        num => /\d{11,14}/.test( num )
-    }
-    expect: {
-        num => /\d{11,14}/.test( num )
-    }
-}

test/compress/ascii.js

@@ -2,7 +2,7 @@ ascii_only_true: {
     options = {}
     beautify = {
         ascii_only : true,
-        ie8        : false,
+        screw_ie8  : true,
         beautify   : false,
     }
     input: {
@@ -20,7 +20,7 @@ ascii_only_false: {
     options = {}
     beautify = {
         ascii_only : false,
-        ie8        : false,
+        screw_ie8  : true,
         beautify   : false,
     }
     input: {
@@ -33,3 +33,4 @@ ascii_only_false: {
     }
     expect_exact: 'function f(){return"\\x000\\x001\\x007\\08\\0"+"\\0\x01\x02\x03\x04\x05\x06\x07\\b\\t\\n\\v\\f\\r\x0e\x0f"+"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"+\' !"# ... }~\x7f\x80\x81 ... \xfe\xff\u0fff\uffff\'}'
 }
+

test/compress/block-scope.js

@@ -1,177 +0,0 @@
-
-let_statement: {
-    input: {
-        let x = 6;
-    }
-    expect_exact: "let x=6;"
-}
-
-do_not_hoist_let: {
-    options = {
-        hoist_vars: true,
-    };
-    input: {
-        function x() {
-            if (FOO) {
-                let let1;
-                let let2;
-                var var1;
-                var var2;
-            }
-        }
-    }
-    expect: {
-        function x() {
-            var var1, var2;
-            if (FOO) {
-                let let1;
-                let let2;
-            }
-        }
-    }
-}
-
-do_not_remove_anon_blocks_if_they_have_decls: {
-    input: {
-        function x() {
-            {
-                let x;
-            }
-            {
-                var x;
-            }
-            {
-                const y;
-                class Zee {};
-            }
-        }
-        {
-            let y;
-        }
-        {
-            var y;
-        }
-    }
-    expect: {
-        function x(){
-            {
-                let x
-            }
-            var x;
-            {
-                const y;
-                class Zee {}
-            }
-        }
-        {
-            let y
-        }
-        var y;
-    }
-}
-
-remove_unused_in_global_block: {
-    options = {
-        unused: true,
-    }
-    input: {
-        {
-            let x;
-            const y;
-            class Zee {};
-            var w;
-        }
-        let ex;
-        const why;
-        class Zed {};
-        var wut;
-        console.log(x, y, Zee);
-    }
-    expect: {
-        var w;
-        let ex;
-        const why;
-        class Zed {};
-        var wut;
-        console.log(x, y, Zee);
-    }
-}
-
-regression_block_scope_resolves: {
-    mangle = { };
-    options = {
-        dead_code: false
-    };
-    input: {
-        (function () {
-            if(1) {
-                let x;
-                const y;
-                class Zee {};
-            }
-            if(1) {
-                let ex;
-                const why;
-                class Zi {};
-            }
-            console.log(x, y, Zee, ex, why, Zi);
-        }());
-    }
-    expect: {
-        (function () {
-            if (1) {
-                let o;
-                const n;
-                class c {};
-            }
-            if (1) {
-                let o;
-                const n;
-                class c {};
-            }
-            console.log(x, y, Zee, ex, why, Zi);
-        }());
-    }
-}
-
-switch_block_scope_mangler: {
-    mangle = {}
-    input: {
-        var fn = function(code) {
-            switch (code) {
-                case 1:
-                    let apple = code + 1;
-                    let dog = code + 4;
-                    console.log(apple, dog);
-                    break;
-                case 2:
-                    let banana = code + 2;
-                    console.log(banana);
-                    break;
-                default:
-                    let cat = code + 3;
-                    console.log(cat);
-            }
-        };
-    }
-    expect: {
-        var fn = function(o) {
-            switch (o) {
-              case 1:
-                let e = o + 1
-                let c = o + 4;
-                console.log(e, c);
-                break;
-
-              case 2:
-                let l = o + 2;
-                console.log(l);
-                break;
-
-              default:
-                let a = o + 3;
-                console.log(a);
-            }
-        };
-    }
-}

test/compress/collapse_vars.js

@@ -2,7 +2,7 @@ collapse_vars_side_effects_1: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -68,10 +68,11 @@ collapse_vars_side_effects_1: {
             log(x, s.charAt(i++), y, 7);
         }
         function f4() {
-            var i = 10,
+            var log = console.log.bind(console),
+                i = 10,
                 x = i += 2,
                 y = i += 3;
-            console.log.bind(console)(x, i += 4, y, i);
+            log(x, i += 4, y, i);
         }
         f1(), f2(), f3(), f4();
     }
@@ -150,7 +151,7 @@ collapse_vars_issue_721: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         define(["require", "exports", 'handlebars'], function (require, exports, hb) {
@@ -216,7 +217,7 @@ collapse_vars_properties: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(obj) {
@@ -243,7 +244,7 @@ collapse_vars_if: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -293,7 +294,7 @@ collapse_vars_while: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:false, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(y) {
@@ -392,9 +393,9 @@ collapse_vars_do_while: {
         }
         function f3(y) {
             function fn(n) { console.log(n); }
-            var a = 2, x = 7;
+            var a = 2;
             do {
-                fn(a = x);
+                fn(a = 7);
                 break;
             } while (y);
         }
@@ -467,9 +468,8 @@ collapse_vars_do_while_drop_assign: {
         }
         function f3(y) {
             function fn(n) { console.log(n); }
-            var x = 7;
             do {
-                fn(x);
+                fn(7);
                 break;
             } while (y);
         }
@@ -670,8 +670,8 @@ collapse_vars_lvalues: {
         function f4(x) { var a = (x -= 3); return x + a; }
         function f5(x) { var w = e1(), v = e2(), c = v = --x; return (w = x) - c; }
         function f6(x) { var w = e1(), v = e2(); return (v = --x) - (w = x); }
-        function f7(x) { var w = e1(); return (w = x) - (e2() - x); }
-        function f8(x) { var w = e1(); return (w = x) - (e2() - x); }
+        function f7(x) { var w = e1(), v = e2(), c = v - x; return (w = x) - c; }
+        function f8(x) { var w = e1(), v = e2(); return (w = x) - (v - x); }
         function f9(x) { var w = e1(); return e2() - x - (w = x); }
     }
 }
@@ -700,10 +700,10 @@ collapse_vars_lvalues_drop_assign: {
         function f2(x) { var z = x, a = ++z; return z += a; }
         function f3(x) { var a = (x -= 3); return x + a; }
         function f4(x) { var a = (x -= 3); return x + a; }
-        function f5(x) { e1(); var v = e2(), c = v = --x; return x - c; }
+        function f5(x) { var v = (e1(), e2()), c = v = --x; return x - c; }
         function f6(x) { e1(), e2(); return --x - x; }
-        function f7(x) { e1(); return x - (e2() - x); }
-        function f8(x) { e1(); return x - (e2() - x); }
+        function f7(x) { var v = (e1(), e2()), c = v - x; return x - c; }
+        function f8(x) { var v = (e1(), e2()); return x - (v - x); }
         function f9(x) { e1(); return e2() - x - x; }
     }
 }
@@ -712,7 +712,7 @@ collapse_vars_misc1: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f0(o, a, h) {
@@ -789,7 +789,7 @@ collapse_vars_repeated: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -812,17 +812,19 @@ collapse_vars_repeated: {
     }
     expect: {
         function f1() {
-            return -3;
+            return -3
         }
         function f2(x) {
-            return x;
+            return x
         }
         (function(x){
-             console.log("GOOD!!");
-        })(),
+             var a = "GOOD" + x, e = "BAD", e = a;
+             console.log(e + "!");
+        })("!"),
         (function(x){
-             console.log("GOOD!!");
-        })();
+            var a = "GOOD" + x, e = "BAD" + x, e = a;
+            console.log(e + "!");
+        })("!");
     }
     expect_stdout: true
 }
@@ -831,7 +833,7 @@ collapse_vars_closures: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function constant_vars_can_be_replaced_in_any_scope() {
@@ -921,7 +923,7 @@ collapse_vars_try: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1() {
@@ -1046,9 +1048,10 @@ collapse_vars_object: {
     }
     expect: {
         function f0(x, y) {
+            var z = x + y;
             return {
                 get b() { return 7; },
-                r: x + y
+                r: z
             };
         }
         function f1(x, y) {
@@ -1118,7 +1121,7 @@ collapse_vars_constants: {
     options = {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true, reduce_vars:true
+        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
     }
     input: {
         function f1(x) {
@@ -1156,7 +1159,7 @@ collapse_vars_arguments: {
         collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
         comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
         keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true,
-        toplevel:true, reduce_vars:true
+        toplevel:true
     }
     input: {
         var outer = function() {
@@ -1283,7 +1286,6 @@ collapse_vars_regexp: {
         join_vars:     true,
         cascade:       true,
         side_effects:  true,
-        reduce_vars:   true,
     }
     input: {
         function f1() {
@@ -1317,8 +1319,8 @@ collapse_vars_regexp: {
             };
         }
         (function(){
-            var result, rx = /ab*/g;
-            while (result = rx.exec("acdabcdeabbb"))
+            var result, s = "acdabcdeabbb", rx = /ab*/g;
+            while (result = rx.exec(s))
                 console.log(result[0]);
         })();
     }
@@ -1328,7 +1330,6 @@ collapse_vars_regexp: {
 issue_1537: {
     options = {
         collapse_vars: true,
-        toplevel: true,
     }
     input: {
         var k = '';
@@ -1340,111 +1341,10 @@ issue_1537: {
     }
 }
 
-issue_1537_for_of: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var k = '';
-        for (k of {prop: 'val'}){}
-    }
-    expect: {
-        var k = '';
-        for (k of {prop: 'val'});
-    }
-}
-
-issue_1537_destructuring_1: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        [x] = [y];
-    }
-    expect: {
-        var x = 1, y = 2;
-        [x] = [y];
-    }
-}
-
-issue_1537_destructuring_2: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = foo();
-        [x] = [1];
-    }
-    expect: {
-        var x = foo();
-        [x] = [1];
-    }
-}
-
-issue_1537_destructuring_3: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = Math.random();
-        ({p: x = 9} = {v: 1});
-    }
-    expect: {
-        var x = Math.random();
-        ({p: x = 9} = {v: 1});
-    }
-}
-
-issue_1537_destructuring_for_in: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] in a);
-        })();
-    }
-    expect: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] in a);
-        })();
-    }
-}
-
-issue_1537_destructuring_for_of: {
-    options = {
-        collapse_vars: true,
-        toplevel: true,
-    }
-    input: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] of a);
-        })();
-    }
-    expect: {
-        var x = 1, y = 2;
-        (function() {
-            for ([[x], y] of a);
-        })();
-    }
-}
-
 issue_1562: {
     options = {
         collapse_vars: true,
-        evaluate: true,
-        reduce_vars: true,
         toplevel: true,
-        unused: true,
     }
     input: {
         var v = 1, B = 2;
@@ -1463,11 +1363,14 @@ issue_1562: {
         var v = 1;
         for (v in objs) f(2);
 
-        while(5) bar(10);
+        var x = 3;
+        while(x + 2) bar(10);
 
-        do bar(20); while(6);
+        var y = 4;
+        do bar(20); while(y + 2);
 
-        for (; f(7) ;) bar(30);
+        var z = 5;
+        for (; f(z + 2) ;) bar(30);
     }
 }
 
@@ -1690,597 +1593,48 @@ var_side_effects_3: {
     expect_stdout: true
 }
 
-reduce_vars_assign: {
+reassign_const_1: {
     options = {
         collapse_vars: true,
-        reduce_vars: true,
-    }
-    input: {
-        !function() {
-            var a = 1;
-            a = [].length,
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = 1;
-            a = [].length,
-            console.log(a);
-        }();
-    }
-    expect_stdout: "0"
-}
-
-iife_1: {
-    options = {
-        collapse_vars: true,
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var log = function(x) {
-            console.log(x);
-        }, foo = bar();
-        log(foo);
-    }
-    expect: {
-        (function(x) {
-            console.log(x);
-        })(bar());
-    }
-}
-
-iife_2: {
-    options = {
-        collapse_vars: true,
-        reduce_vars: false,
-        toplevel: true,
-        unused: false,
-    }
-    input: {
-        var foo = bar();
-        !function(x) {
-            console.log(x);
-        }(foo);
-    }
-    expect: {
-        !function(x) {
-            console.log(x);
-        }(bar());
-    }
-}
-
-var_defs: {
-    options = {
-        collapse_vars:true, sequences:true, properties:true, dead_code:true, conditionals:true,
-        comparisons:true, evaluate:true, booleans:true, loops:true, unused:true, hoist_funs:true,
-        keep_fargs:true, if_return:true, join_vars:true, cascade:true, side_effects:true
-    }
-    input: {
-        var f1 = function(x, y) {
-            var a, b, r = x + y, q = r * r, z = q - r, a = z, b = 7;
-            console.log(a + b);
-        };
-        f1("1", 0);
-    }
-    expect: {
-        var f1 = function(x, y) {
-            var r = x + y, a = r * r - r, b = 7;
-            console.log(a + b);
-        };
-        f1("1", 0);
-    }
-    expect_stdout: "97"
-}
-
-assignment: {
-    options = {
-        collapse_vars: true,
-        unused: true,
     }
     input: {
         function f() {
-            var a;
-            a = x;
+            const a = 1;
+            a = 2;
             return a;
         }
+        console.log(f());
     }
     expect: {
         function f() {
-            return x;
+            const a = 1;
+            a = 2;
+            return a;
         }
-    }
-}
-
-for_init: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y) {
-            var a = x;
-            var b = y;
-            for (a; b;);
-        }
-    }
-    expect: {
-        function f(x, y) {
-            var b = y;
-            for (x; b;);
-        }
-    }
-}
-
-switch_case: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y, z) {
-            var a = x();
-            var b = y();
-            var c = z;
-            switch (a) {
-              default: d();
-              case b: e();
-              case c: f();
-            }
-        }
-    }
-    expect: {
-        function f(x, y, z) {
-            var c = z;
-            switch (x()) {
-              default: d();
-              case y(): e();
-              case c: f();
-            }
-        }
-    }
-}
-
-issue_27: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        (function(jQuery) {
-            var $;
-            $ = jQuery;
-            $("body").addClass("foo");
-        })(jQuery);
-    }
-    expect: {
-        (function(jQuery) {
-            jQuery("body").addClass("foo");
-        })(jQuery);
-    }
-}
-
-modified: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f1(b) {
-            var a = b;
-            return b + a;
-        }
-        function f2(b) {
-            var a = b;
-            return b++ + a;
-        }
-        function f3(b) {
-            var a = b++;
-            return b + a;
-        }
-        function f4(b) {
-            var a = b++;
-            return b++ + a;
-        }
-        function f5(b) {
-            var a = function() {
-                return b;
-            }();
-            return b++ + a;
-        }
-        console.log(f1(1), f2(1), f3(1), f4(1), f5(1));
-    }
-    expect: {
-        function f1(b) {
-            return b + b;
-        }
-        function f2(b) {
-            var a = b;
-            return b++ + a;
-        }
-        function f3(b) {
-            var a = b++;
-            return b + a;
-        }
-        function f4(b) {
-            var a = b++;
-            return b++ + a;
-        }
-        function f5(b) {
-            var a = function() {
-                return b;
-            }();
-            return b++ + a;
-        }
-        console.log(f1(1), f2(1), f3(1), f4(1), f5(1));
-    }
-    expect_stdout: "2 2 3 3 2"
-}
-
-issue_1858: {
-    options = {
-        collapse_vars: true,
-        pure_getters: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(x) {
-            var a = {}, b = a.b = x;
-            return a.b + b;
-        }(1));
-    }
-    expect: {
-        console.log(function(x) {
-            var a = {}, b = a.b = x;
-            return a.b + b;
-        }(1));
-    }
-    expect_stdout: "2"
-}
-
-anonymous_function: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        console.log(function f(a) {
-            f ^= 0;
-            return f * a;
-        }(1));
-    }
-    expect: {
-        console.log(function f(a) {
-            f ^= 0;
-            return f * a;
-        }(1));
+        console.log(f());
     }
     expect_stdout: true
 }
 
-side_effects_property: {
+reassign_const_2: {
     options = {
         collapse_vars: true,
     }
     input: {
-        var a = [];
-        var b = 0;
-        a[b++] = function() { return 42;};
-        var c = a[b++]();
-        console.log(c);
-    }
-    expect: {
-        var a = [];
-        var b = 0;
-        a[b++] = function() { return 42;};
-        var c = a[b++]();
-        console.log(c);
-    }
-    expect_stdout: true
-}
-
-undeclared: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        function f(x, y) {
-            var a;
-            a = x;
-            b = y;
-            return b + a;
+        function f() {
+            const a = 1;
+            ++a;
+            return a;
         }
+        console.log(f());
     }
     expect: {
-        function f(x, y) {
-            var a;
-            a = x;
-            b = y;
-            return b + a;
+        function f() {
+            const a = 1;
+            ++a;
+            return a;
         }
-    }
-}
-
-ref_scope: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        console.log(function() {
-            var a = 1, b = 2, c = 3;
-            var a = c++, b = b /= a;
-            return function() {
-                return a;
-            }() + b;
-        }());
-    }
-    expect: {
-        console.log(function() {
-            var a = 1, b = 2, c = 3;
-            b = b /= a = c++;
-            return function() {
-                return a;
-            }() + b;
-        }());
+        console.log(f());
     }
     expect_stdout: true
 }
-
-chained_1: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = 2;
-        var a = 3 / a;
-        console.log(a);
-    }
-    expect: {
-        var a = 3 / (a = 2);
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-chained_2: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        var a = 2;
-        a = 3 / a;
-        console.log(a);
-    }
-    expect: {
-        var a;
-        a = 3 / (a = 2);
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-chained_3: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(a, b) {
-            var c = a, c = b;
-            b++;
-            return c;
-        }(1, 2));
-    }
-    expect: {
-        console.log(function(a, b) {
-            var c = a, c = b;
-            b++;
-            return c;
-        }(1, 2));
-    }
-    expect_stdout: "2"
-}
-
-boolean_binary_1: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = 1;
-        a++;
-        (function() {} || a || 3).toString();
-        console.log(a);
-    }
-    expect: {
-        var a = 1;
-        a++;
-        (function() {} || a || 3).toString();
-        console.log(a);
-    }
-    expect_stdout: true
-}
-
-boolean_binary_2: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var c = 0;
-        c += 1;
-        (function() {
-            c = 1 + c;
-        } || 9).toString();
-        console.log(c);
-    }
-    expect: {
-        var c = 0;
-        c += 1;
-        (function() {
-            c = 1 + c;
-        } || 9).toString();
-        console.log(c);
-    }
-    expect_stdout: true
-}
-
-inner_lvalues: {
-    options = {
-        collapse_vars: true,
-        unused: true,
-    }
-    input: {
-        var a, b = 10;
-        var a = (--b || a || 3).toString(), c = --b + -a;
-        console.log(null, a, b);
-    }
-    expect: {
-        var a, b = 10;
-        var a = (--b || a || 3).toString(), c = --b + -a;
-        console.log(null, a, b);
-    }
-    expect_stdout: true
-}
-
-double_def: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a = x, a = a && y;
-        a();
-    }
-    expect: {
-        var a = x;
-        (a = a && y)();
-    }
-}
-
-toplevel_single_reference: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        for (var b in x) {
-            var a = b;
-            b(a);
-        }
-    }
-    expect: {
-        var a;
-        for (var b in x)
-            b(a = b);
-    }
-}
-
-unused_orig: {
-    options = {
-        collapse_vars: true,
-        passes: 2,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        var a = 1;
-        console.log(function(b) {
-            var a;
-            var c = b;
-            for (var d in c) {
-                var a = c[0];
-                return --b + a;
-            }
-            try {
-            } catch (e) {
-                --b + a;
-            }
-            a && a.NaN;
-        }([2]), a);
-    }
-    expect: {
-        var a = 1;
-        console.log(function(b) {
-            var a;
-            var c = b;
-            for (var d in c)
-                return --b + (a = c[0]);
-            a && a.NaN;
-        }([2]), a);
-    }
-    expect_stdout: "3 1"
-}
-
-issue_315: {
-    options = {
-        collapse_vars: true,
-        evaluate: true,
-        keep_fargs: false,
-        reduce_vars: true,
-        sequences: true,
-        unused: true,
-    }
-    input: {
-        console.log(function(s) {
-            var w, _i, _len, _ref, _results;
-            _ref = s.trim().split(" ");
-            _results = [];
-            for (_i = 0, _len = _ref.length; _i < _len; _i++) {
-                w = _ref[_i];
-                _results.push(w.toLowerCase());
-            }
-            return _results;
-        }("test"));
-    }
-    expect: {
-        console.log(function() {
-            var w, _i, _len, _ref, _results;
-            for (_results = [], _i = 0, _len = (_ref = "test".trim().split(" ")).length; _i < _len ; _i++)
-                w = _ref[_i], _results.push(w.toLowerCase());
-            return _results;
-        }());
-    }
-    expect_stdout: true
-}
-
-lvalues_def: {
-    options = {
-        collapse_vars: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        var a = 0, b = 1;
-        var a = b++, b = +function() {}();
-        a && a[a++];
-        console.log(a, b);
-    }
-    expect: {
-        var a = 0, b = 1;
-        var a = b++, b = +void 0;
-        a && a[a++];
-        console.log(a, b);
-    }
-    expect_stdout: true
-}
-
-compound_assignment: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        var a;
-        a = 1;
-        a += a + 2;
-        console.log(a);
-    }
-    expect: {
-        var a;
-        a = 1;
-        a += a + 2;
-        console.log(a);
-    }
-    expect_stdout: "4"
-}

test/compress/conditionals.js

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

test/compress/dead-code.js

@@ -90,28 +90,6 @@ dead_code_constant_boolean_should_warn_more: {
     expect_stdout: true
 }
 
-dead_code_block_decls_die: {
-    options = {
-        dead_code    : true,
-        conditionals : true,
-        booleans     : true,
-        evaluate     : true
-    };
-    input: {
-        if (0) {
-            let foo = 6;
-            const bar = 12;
-            class Baz {};
-            var qux;
-        }
-        console.log(foo, bar, Baz);
-    }
-    expect: {
-        var qux;
-        console.log(foo, bar, Baz);
-    }
-}
-
 dead_code_const_declaration: {
     options = {
         dead_code    : true,
@@ -278,3 +256,19 @@ try_catch_finally: {
         "1",
     ]
 }
+
+accessor: {
+    options = {
+        side_effects: true,
+    }
+    input: {
+        ({
+            get a() {},
+            set a(v){
+                this.b = 2;
+            },
+            b: 1
+        });
+    }
+    expect: {}
+}

test/compress/destructuring.js

@@ -1,332 +0,0 @@
-destructuring_arrays: {
-    input: {
-        {const [aa, bb] = cc;}
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, bb] = cc;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, bb] = cc;
-        var [aa, [bb, cc]] = dd;
-        var [,[,,,,,],,,zz,] = xx; // Trailing comma
-        var [,,zzz,,] = xxx; // Trailing comma after hole
-    }
-    expect: {
-        {const [aa, bb] = cc;}
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, bb] = cc;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, bb] = cc;
-        var [aa, [bb, cc]] = dd;
-        var [,[,,,,,],,,zz] = xx;
-        var [,,zzz,,] = xxx;
-    }
-}
-
-destructuring_arrays_holes: {
-    input: {
-        var [,,,,] = a;
-        var [,,b,] = c;
-        var [d,,]  = e;
-    }
-    expect_exact: "var[,,,,]=a;var[,,b]=c;var[d,,]=e;"
-}
-
-destructuring_objects: {
-    input: {
-        {const {aa, bb} = {aa:1, bb:2};}
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb} = {aa:1, bb:2};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb} = {aa:1, bb:2};
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-    }
-    expect: {
-        {const {aa, bb} = {aa:1, bb:2};}
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb} = {aa:1, bb:2};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb} = {aa:1, bb:2};
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-    }
-}
-
-destructuring_objects_trailing_elision: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        var {cc,} = foo;
-    }
-    expect_exact: "var{cc}=foo;"
-}
-
-nested_destructuring_objects: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-    }
-    expect_exact: 'const[{a},b]=c;let[{a},b]=c;var[{a},b]=c;';
-}
-
-destructuring_constdef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (const [x,y] in pairs);
-        for (const [a] = 0;;);
-        for (const {c} of cees);
-    }
-    expect_exact: "for(const[x,y]in pairs);for(const[a]=0;;);for(const{c}of cees);"
-}
-
-destructuring_letdef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (let [x,y] in pairs);
-        for (let [a] = 0;;);
-        for (let {c} of cees);
-    }
-    expect_exact: "for(let[x,y]in pairs);for(let[a]=0;;);for(let{c}of cees);"
-}
-
-destructuring_vardef_in_loops: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        for (var [x,y] in pairs);
-        for (var [a] = 0;;);
-        for (var {c} of cees);
-    }
-    expect_exact: "for(var[x,y]in pairs);for(var[a]=0;;);for(var{c}of cees);"
-}
-
-destructuring_expressions: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        ({a, b});
-        [{a}];
-        f({x});
-    }
-    expect_exact: "({a,b});[{a}];f({x});"
-}
-
-destructuring_remove_unused_1: {
-    options = {
-        unused: true
-    }
-    input: {
-        function a() {
-            var unused = "foo";
-            var a = [1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var unused = "foo";
-            var a = {b: 1};
-            var {b} = a;
-            f(b);
-        }
-        function c() {
-            var unused = "foo";
-            var a = [[1]];
-            var [[b]] = a;
-            f(b);
-        }
-        function d() {
-            var unused = "foo";
-            var a = {b: {b:1}};
-            var {b:{b}} = a;
-            f(b);
-        }
-        function e() {
-            var unused = "foo";
-            var a = [1, 2, 3, 4, 5];
-            var x = [[1, 2, 3]];
-            var y = {h: 1};
-            var [b, ...c] = a;
-            var [...[e, f]] = x;
-            var [...{g: h}] = y;
-            f(b, c, e, f, g);
-        }
-    }
-    expect: {
-        function a() {
-            var a = [1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var a = {b: 1};
-            var {b} = a;
-            f(b);
-        }
-        function c() {
-            var a = [[1]];
-            var [[b]] = a;
-            f(b);
-        }
-        function d() {
-            var a = {b: {b:1}};
-            var {b:{b}} = a;
-            f(b);
-        }
-        function e() {
-            var a = [1, 2, 3, 4, 5];
-            var x = [[1, 2, 3]];
-            var y = {h: 1};
-            var [b, ...c] = a;
-            var [...[e, f]] = x;
-            var [...{g: h}] = y;
-            f(b, c, e, f, g);
-        }
-    }
-}
-
-destructuring_remove_unused_2: {
-    options = {
-        unused: true
-    }
-    input: {
-        function a() {
-            var unused = "foo";
-            var a = [,,1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var unused = "foo";
-            var a = [{a: [1]}];
-            var [{b: a}] = a;
-            f(b);
-        }
-    }
-    expect: {
-        function a() {
-            var a = [,,1];
-            var [b] = a;
-            f(b);
-        }
-        function b() {
-            var a = [{a: [1]}];
-            var [{b: a}] = a;
-            f(b);
-        }
-    }
-}
-
-object_destructuring_may_need_parentheses: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        ({a, b} = {a: 1, b: 2});
-    }
-    expect_exact: "({a,b}={a:1,b:2});"
-}
-
-destructuring_with_undefined_as_default_assignment: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        [foo = undefined] = bar;
-        [foo = void 0] = bar;
-    }
-    expect: {
-        [foo] = bar;
-        [foo] = bar;
-    }
-}
-
-destructuring_dont_evaluate_with_undefined_as_default_assignment: {
-    options = {
-        evaluate: false
-    }
-    input: {
-        [foo = undefined] = bar;
-    }
-    expect: {
-        [foo = void 0] = bar;
-    }
-}
-
-reduce_vars: {
-    options = {
-        reduce_vars: true,
-    }
-    input: {
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, [bb, cc]] = dd;
-        [aa, [bb, cc]] = dd;
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-        ({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-        [{a},b] = c;
-        for (const [x,y] in pairs);
-        for (let [x,y] in pairs);
-        for (var [x,y] in pairs);
-        for ([x,y] in pairs);
-    }
-    expect: {
-        {const [aa, [bb, cc]] = dd;}
-        {let [aa, [bb, cc]] = dd;}
-        var [aa, [bb, cc]] = dd;
-        [aa, [bb, cc]] = dd;
-        {const {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        {let {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};}
-        var {aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}};
-        ({aa, bb: {cc, dd}} = {aa:1, bb: {cc:2, dd: 3}});
-        const [{a},b] = c;
-        let [{a},b] = c;
-        var [{a},b] = c;
-        [{a},b] = c;
-        for (const [x,y] in pairs);
-        for (let [x,y] in pairs);
-        for (var [x,y] in pairs);
-        for ([x,y] in pairs);
-    }
-}
-
-unused: {
-    options = {
-        unused: true,
-    }
-    input: {
-        let { foo: [, , ...a] } = { foo: [1, 2, 3, 4], bar: 5 };
-        console.log(a);
-    }
-    expect: {
-        let { foo: [, , ...a] } = { foo: [1, 2, 3, 4], bar: 5 };
-        console.log(a);
-    }
-}
-
-issue_1886: {
-    options = {
-        collapse_vars: true,
-    }
-    input: {
-        let [a] = [1];
-        console.log(a);
-    }
-    expect: {
-        let [a] = [1];
-        console.log(a);
-    }
-    expect_exact: "1"
-}

test/compress/directives.js

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

test/compress/drop-unused.js

@@ -164,87 +164,6 @@ used_var_in_catch: {
     }
 }
 
-unused_block_decls_in_catch: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {
-                let x = 10;
-                const y = 10;
-                class Zee {};
-            }
-        }
-    }
-    expect: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {}
-        }
-    }
-}
-
-used_block_decls_in_catch: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {
-                let x = 10;
-                const y = 10;
-                class Zee {};
-            }
-            console.log(x, y, Zee);
-        }
-    }
-    expect: {
-        function foo() {
-            try {
-                foo();
-            } catch(ex) {}
-            console.log(x, y, Zee);
-        }
-    }
-}
-
-unused_block_decls: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            {
-                const x;
-            }
-            {
-                let y;
-            }
-            console.log(x, y);
-        }
-    }
-    expect: {
-        function foo() {
-            console.log(x, y);
-        }
-    }
-}
-
-unused_keep_harmony_destructuring: {
-    options = { unused: true };
-    input: {
-        function foo() {
-            var {x, y} = foo;
-            var a = foo;
-        }
-    }
-    expect:  {
-        function foo() {
-            var {x, y} = foo;
-        }
-    }
-}
-
 keep_fnames: {
     options = { unused: true, keep_fnames: true, unsafe: true };
     input: {
@@ -1016,8 +935,7 @@ issue_1715_3: {
             try {
                 console;
             } catch (a) {
-                var a;
-                x();
+                var a = x();
             }
         }
         f();
@@ -1112,33 +1030,6 @@ delete_assign_2: {
     expect_stdout: true
 }
 
-drop_var: {
-    options = {
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        var a;
-        console.log(a, b);
-        var a = 1, b = 2;
-        console.log(a, b);
-        var a = 3;
-        console.log(a, b);
-    }
-    expect: {
-        console.log(a, b);
-        var a = 1, b = 2;
-        console.log(a, b);
-        a = 3;
-        console.log(a, b);
-    }
-    expect_stdout: [
-        "undefined undefined",
-        "1 2",
-        "3 2",
-    ]
-}
-
 issue_1830_1: {
     options = {
         unused: true,
@@ -1174,57 +1065,27 @@ issue_1830_2: {
     expect_stdout: "1"
 }
 
-issue_1838: {
+reassign_const: {
     options = {
-        join_vars: true,
-        loops: true,
-        unused: true,
-    }
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        function f() {
-            var b = a;
-            while (c);
-        }
-    }
-    expect_exact: [
-        "function f() {",
-        "    for (a; c; ) ;",
-        "}",
-    ]
-}
-
-var_catch_toplevel: {
-    options = {
-        conditionals: true,
-        negate_iife: true,
-        reduce_vars: true,
+        cascade: true,
+        sequences: true,
         side_effects: true,
-        toplevel: true,
         unused: true,
     }
     input: {
         function f() {
-            a--;
-            try {
-                a++;
-            } catch(a) {
-                if (a) var a;
-                var a = 10;
-            }
+            const a = 1;
+            a = 2;
+            return a;
         }
-        f();
+        console.log(f());
     }
     expect: {
-        !function() {
-            a--;
-            try {
-                a++;
-            } catch(a) {
-                var a;
-            }
-        }();
+        function f() {
+            const a = 1;
+            return a = 2, a;
+        }
+        console.log(f());
     }
+    expect_stdout: true
 }

test/compress/evaluate.js

@@ -224,100 +224,6 @@ positive_zero: {
     expect_stdout: true
 }
 
-pow: {
-    options = { evaluate: true }
-    input: {
-        var a = 5 ** 3;
-    }
-    expect: {
-        var a = 125;
-    }
-}
-
-pow_sequence: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 2 ** 3 ** 2;
-    }
-    expect: {
-        var a = 512;
-    }
-}
-
-pow_mixed: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 5 + 2 ** 3 + 5;
-        var b = 5 * 3 ** 2;
-        var c = 5 ** 3 * 2;
-        var d = 5 ** +3;
-    }
-    expect: {
-        var a = 18;
-        var b = 45;
-        var c = 250;
-        var d = 125;
-    }
-}
-
-pow_with_right_side_evaluating_to_unary: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = (4 - 7) ** foo;
-        var b = ++bar ** 3;
-        var c = --baz ** 2;
-    }
-    expect_exact: "var a=(-3)**foo;var b=++bar**3;var c=--baz**2;"
-}
-
-pow_with_number_constants: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var a = 5 ** NaN;
-        /* NaN exponent results to NaN */
-        var b = 42 ** +0;
-        /* +0 exponent results to NaN */
-        var c = 42 ** -0;
-        /* -0 exponent results to NaN */
-        var d = NaN ** 1;
-        /* NaN with non-zero exponent is NaN */
-        var e = 2 ** Infinity;
-        /* abs(base) > 1 with Infinity as exponent is Infinity */
-        var f = 2 ** -Infinity;
-        /* abs(base) > 1 with -Infinity as exponent is +0 */
-        var g = (-7) ** (0.5);
-        var h = 2324334 ** 34343443;
-        var i = (-2324334) ** 34343443;
-        var j = 2 ** (-3);
-        var k = 2.0 ** -3;
-        var l = 2.0 ** (5 - 7);
-        var m = 3 ** -10;  // Result will be 0.000016935087808430286, which is too long
-    }
-    expect: {
-        var a = NaN;
-        var b = 1;
-        var c = 1;
-        var d = NaN;
-        var e = 1/0;
-        var f = 0;
-        var g = NaN;
-        var h = 1/0;
-        var i = -1/0;
-        var j = .125;
-        var k = .125;
-        var l = .25;
-        var m = 3 ** -10;
-    }
-}
-
 unsafe_constant: {
     options = {
         evaluate  : true,
@@ -1016,12 +922,12 @@ delete_binary_1: {
         console.log(delete (true && (0 / 0)));
     }
     expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
+        console.log((void 0, !0));
+        console.log((void 0, !0));
+        console.log((1 / 0, !0));
+        console.log((1 / 0, !0));
+        console.log((NaN, !0));
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }
@@ -1042,12 +948,12 @@ delete_binary_2: {
         console.log(delete (false || (0 / 0)));
     }
     expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
+        console.log((void 0, !0));
+        console.log((void 0, !0));
+        console.log((Infinity, !0));
+        console.log((1 / 0, !0));
+        console.log((NaN, !0));
+        console.log((NaN, !0));
     }
     expect_stdout: true
 }

test/compress/expansions.js

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

test/compress/expression.js

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

test/compress/functions.js

@@ -112,8 +112,9 @@ issue_1841_1: {
     expect: {
         var b = 10;
         !function() {
-            for (var key in "hi")
+            for (var key in "hi") {
                 b = 42;
+            }
         }(--b);
         console.log(b);
     }
@@ -138,32 +139,11 @@ issue_1841_2: {
     expect: {
         var b = 10;
         !function(arg) {
-            for (var key in "hi")
+            for (var key in "hi") {
                 arg.baz, b = 42;
+            }
         }(--b);
         console.log(b);
     }
     expect_exact: "42"
 }
-
-function_returning_constant_literal: {
-    options = {
-        reduce_vars: true,
-        unsafe: true,
-        toplevel: true,
-        evaluate: true,
-        cascade: true,
-        unused: true,
-    }
-    input: {
-        function greeter() {
-            return { message: 'Hello there' };
-        }
-        var greeting = greeter();
-        console.log(greeting.message);
-    }
-    expect: {
-        console.log("Hello there");
-    }
-    expect_stdout: "Hello there"
-}

test/compress/harmony.js

@@ -1,394 +0,0 @@
-arrow_function_parens: {
-    input: {
-        something && (() => {});
-    }
-    expect_exact: "something&&(()=>{});"
-}
-arrow_function_parens_2: {
-    input: {
-        (() => null)();
-    }
-    expect_exact: "(()=>null)();"
-}
-
-typeof_arrow_functions: {
-    options = {
-        evaluate: true
-    }
-    input: {
-        var foo = typeof (x) => null;
-    }
-    expect_exact: "var foo=\"function\";"
-}
-
-classes: {
-    input: {
-        class SomeClass {
-            constructor() {
-            };
-            foo() {};
-        };
-        class NoSemi {
-            constructor(...args) {
-            }
-            foo() {}
-        };
-        class ChildClass extends SomeClass {};
-        var asExpression = class AsExpression {};
-        var nameless = class {};
-    }
-    expect_exact: "class SomeClass{constructor(){}foo(){}}class NoSemi{constructor(...args){}foo(){}}class ChildClass extends SomeClass{}var asExpression=class AsExpression{};var nameless=class{};"
-}
-
-class_statics: {
-    input: {
-        x = class {
-            static staticMethod() {}
-            static get foo() {}
-            static set bar() {}
-            static() { /* "static" can be a method name! */ }
-            get() { /* "get" can be a method name! */ }
-            set() { /* "set" can be a method name! */ }
-        }
-    }
-    expect_exact: "x=class{static staticMethod(){}static get foo(){}static set bar(){}static(){}get(){}set(){}};"
-}
-
-class_name_can_be_mangled: {
-    mangle = { };
-    input: {
-        function x() {
-            class Foo {
-            }
-            var class1 = Foo
-            var class2 = class Bar {}
-        }
-    }
-    expect: {
-        function x() {
-            class a { }
-            var n = a
-            var r = class a {}
-        }
-    }
-}
-
-class_name_can_be_preserved: {
-    mangle = {
-        keep_classnames: true
-    }
-    input: {
-        function x() {
-            (class Baz { });
-            class Foo {};
-        }
-    }
-    expect: {
-        function x() {
-            (class Baz { });
-            class Foo {};
-        }
-    }
-}
-
-classes_can_have_generators: {
-    input: {
-        class Foo {
-            *bar() {}
-            static *baz() {}
-        }
-    }
-    expect: {
-        class Foo {
-            *bar() {}
-            static *baz() {}
-        }
-    }
-}
-
-classes_can_have_computed_generators: {
-    input: {
-        class C4 {
-            *['constructor']() {}
-        }
-    }
-    expect: {
-        class C4 {
-            *['constructor']() {}
-        }
-    }
-}
-
-classes_can_have_computed_static: {
-    input: {
-        class C4 {
-            static ['constructor']() {}
-        }
-    }
-    expect: {
-        class C4 {
-            static ['constructor']() {}
-        }
-    }
-}
-
-class_methods_and_getters_with_keep_quoted_props_enabled: {
-    beautify = {
-        quote_style: 3,
-        keep_quoted_props: true,
-    }
-    input: {
-        class clss {
-            a() {}
-            "b"() {}
-            get c() { return "c"}
-            get "d"() { return "d"}
-            set e(a) { doSomething(a); }
-            set 'f'(a) { doSomething(b); }
-            static g() {}
-            static "h"() {}
-        }
-    }
-    expect_exact: 'class clss{a(){}"b"(){}get c(){return"c"}get"d"(){return"d"}set e(a){doSomething(a)}set\'f\'(a){doSomething(b)}static g(){}static"h"(){}}'
-}
-
-classes_with_expression_as_expand: {
-    input: {
-        class D extends (calls++, C) {}
-    }
-    expect_exact: "class D extends(calls++,C){}"
-}
-
-new_target: {
-    input: {
-        new.target;
-        new.target.name;
-    }
-    expect_exact: "new.target;new.target.name;"
-}
-
-number_literals: {
-    input: {
-        0b1001;
-        0B1001;
-        0o11;
-        0O11;
-    }
-
-    expect: {
-        9;
-        9;
-        9;
-        9;
-    }
-}
-
-import_statement: {
-    input: {
-        import "mod-name";
-        import Foo from "bar";
-        import { Bar, Baz } from 'lel';
-        import Bar, { Foo } from 'lel';
-        import { Bar as kex, Baz as food } from 'lel';
-    }
-    expect_exact: 'import"mod-name";import Foo from"bar";import{Bar,Baz}from"lel";import Bar,{Foo}from"lel";import{Bar as kex,Baz as food}from"lel";'
-}
-
-import_all_statement: {
-    input: {
-        import * from 'lel';
-        import * as Lel from 'lel';
-    }
-    expect_exact: 'import*from"lel";import*as Lel from"lel";'
-}
-
-export_statement: {
-    input: {
-        export default 1;
-        export var foo = 4;
-        export let foo = 6;
-        export const foo = 6;
-        export function foo() {};
-        export class foo { };
-    }
-    expect_exact: "export default 1;export var foo=4;export let foo=6;export const foo=6;export function foo(){};export class foo{};"
-}
-
-export_module_statement: {
-    input: {
-        export * from "a.js";
-        export {A} from "a.js";
-        export {A, B} from "a.js";
-        export {C};
-    }
-    expect_exact: 'export*from"a.js";export{A}from"a.js";export{A,B}from"a.js";export{C};'
-}
-
-import_statement_mangling: {
-    mangle = { toplevel: true };
-    input: {
-        import Foo from "foo";
-        import Bar, {Food} from "lel";
-        import {What as Whatever} from "lel";
-        Foo();
-        Bar();
-        Food();
-        Whatever();
-    }
-    expect: {
-        import l from "foo";
-        import e, {Food as o} from "lel";
-        import {What as f} from "lel";
-        l();
-        e();
-        o();
-        f();
-    }
-}
-
-export_statement_mangling: {
-    mangle = { };
-    input: {
-        export var foo = 6;
-        export function bar() { }
-        export class Baz { }
-        bar(foo, Baz)
-    }
-    expect: {
-        export var foo = 6;
-        export function bar() { }
-        export class Baz { }
-        bar(foo, Baz)
-    }
-}
-
-// https://github.com/mishoo/UglifyJS2/issues/1021
-regression_for_of_const: {
-    input: {
-        for (const x of y) {}
-        for (const x in y) {}
-    }
-    expect: {
-        for (const x of y);for (const x in y);
-    }
-}
-
-// Fabio: My patches accidentally caused a crash whenever
-// there's an extraneous set of parens around an object.
-regression_cannot_destructure: {
-    input: {
-        var x = ({ x : 3 });
-        x(({ x: 3 }));
-    }
-    expect_exact: "var x={x:3};x({x:3});";
-}
-
-regression_cannot_use_of: {
-    input: {
-        function of() {
-        }
-        var of = "is a valid variable name";
-        of = { of: "is ok" };
-        x.of;
-        of: foo()
-    }
-    expect: {
-        function of(){}
-        var of="is a valid variable name";
-        of={of:"is ok"};
-        x.of;
-        foo();  /* Label statement missing? No prob. */
-    }
-}
-
-fat_arrow_as_param: {
-    input: {
-        foo(x => x);
-        foo(x => x, y => y);
-
-        foo(x => (x, x));
-        foo(x => (x, x), y => (y, y));
-    }
-    expect_exact: "foo(x=>x);foo(x=>x,y=>y);foo(x=>(x,x));foo(x=>(x,x),y=>(y,y));"
-}
-
-default_assign: {
-    options = {
-        keep_fargs: false,
-        unused: true,
-    }
-    input: {
-        function f(a, b = 3) {
-            console.log(a);
-        }
-
-        g = ([[] = 123]) => {};
-        h = ([[x, y, z] = [4, 5, 6]] = []) => {};
-
-        function i([[x, y, z] = [4, 5, 6]] = []) {
-            console.log(b);
-        };
-    }
-    expect: {
-        function f(a) {
-            console.log(a);
-        }
-
-        g = ([[] = 123]) => {};
-        h = ([[x, y, z] = [4, 5, 6]] = []) => {};
-
-        function i([[x, y, z] = [4, 5, 6]] = []) {
-            console.log(b);
-        };
-    }
-}
-
-expansion: {
-    options = {
-        keep_fargs: false,
-        unused: true,
-    }
-    input: {
-        function f(a, ...b) {
-            console.log(a);
-        }
-    }
-    expect: {
-        function f(a) {
-            console.log(a);
-        }
-    }
-}
-
-issue_1613: {
-  mangle = { toplevel: true };
-  input: {
-    const name = 1;
-    const foo = {
-      name
-    };
-  }
-  expect_exact: "const n=1;const c={name:n};"
-}
-
-format_methods: {
-    beautify = {
-        beautify: true,
-    }
-    input: {
-        class A extends B {constructor(a){x()} static s(b,c){y()} run(d,e,f){z()}}
-    }
-    expect_exact: [
-        "class A extends B {",
-        "    constructor(a) {",
-        "        x();",
-        "    }",
-        "    static s(b, c) {",
-        "        y();",
-        "    }",
-        "    run(d, e, f) {",
-        "        z();",
-        "    }",
-        "}",
-    ]
-}

test/compress/hoist.js

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

test/compress/html_comments.js

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

test/compress/issue-1001.js

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

test/compress/issue-1043.js

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

test/compress/issue-1044.js

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

test/compress/issue-1212.js

@@ -1,76 +0,0 @@
-issue_1212_debug_false: {
-    options = {
-        global_defs   : { DEBUG: false },
-        sequences     : true,
-        properties    : true,
-        dead_code     : true,
-        conditionals  : true,
-        comparisons   : true,
-        evaluate      : true,
-        booleans      : true,
-        loops         : true,
-        unused        : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        if_return     : true,
-        join_vars     : true,
-        cascade       : true,
-        side_effects  : true,
-    }
-    input: {
-        class foo {
-            bar() {
-                if (DEBUG)
-                    console.log("DEV");
-                else
-                    console.log("PROD");
-            }
-        }
-        new foo().bar();
-    }
-    expect: {
-        class foo{
-            bar() { console.log("PROD") }
-        }
-        (new foo).bar();
-    }
-}
-
-issue_1212_debug_true: {
-    options = {
-        global_defs   : { DEBUG: true },
-        sequences     : true,
-        properties    : true,
-        dead_code     : true,
-        conditionals  : true,
-        comparisons   : true,
-        evaluate      : true,
-        booleans      : true,
-        loops         : true,
-        unused        : true,
-        hoist_funs    : true,
-        keep_fargs    : true,
-        if_return     : true,
-        join_vars     : true,
-        cascade       : true,
-        side_effects  : true,
-    }
-    input: {
-        class foo {
-            bar() {
-                if (DEBUG)
-                    console.log("DEV");
-                else
-                    console.log("PROD");
-            }
-        }
-        new foo().bar();
-    }
-    expect: {
-        class foo{
-            bar() { console.log("DEV") }
-        }
-        (new foo).bar();
-    }
-}
-

test/compress/issue-1321.js

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

test/compress/issue-1446.js

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

test/compress/issue-1466.js

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

test/compress/issue-1588.js

@@ -1,9 +1,9 @@
 screw_ie8: {
     options = {
-        ie8: false,
+        screw_ie8: true,
     }
     mangle = {
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         try { throw "foo"; } catch (x) { console.log(x); }
@@ -16,10 +16,10 @@ screw_ie8: {
 
 support_ie8: {
     options = {
-        ie8: true,
+        screw_ie8: false,
     }
     mangle = {
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         try { throw "foo"; } catch (x) { console.log(x); }

test/compress/issue-1609.js

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

test/compress/issue-1704.js

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

test/compress/issue-1733.js

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

test/compress/issue-1770.js

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

test/compress/issue-1787.js

@@ -10,6 +10,10 @@ unary_prefix: {
             return x;
         }());
     }
-    expect_exact: "console.log(-2/3);"
+    expect: {
+        console.log(function() {
+            return -2 / 3;
+        }());
+    }
     expect_stdout: true
 }

test/compress/issue-1943.js

@@ -0,0 +1,31 @@
+operator: {
+    input: {
+        a. //comment
+        typeof
+    }
+    expect_exact: "a.typeof;"
+}
+
+name: {
+    input: {
+        a. //comment
+        b
+    }
+    expect_exact: "a.b;"
+}
+
+keyword: {
+    input: {
+        a. //comment
+        default
+    }
+    expect_exact: "a.default;"
+}
+
+atom: {
+    input: {
+        a. //comment
+        true
+    }
+    expect_exact: "a.true;"
+}

test/compress/issue-203.js

@@ -1,34 +0,0 @@
-
-compress_new_function: {
-    options = {
-        unsafe: true
-    }
-    input: {
-        new Function("aa, bb", 'return aa;');
-    }
-    expect: {
-        Function("a", "b", "return a");
-    }
-}
-
-compress_new_function_with_destruct: {
-    options = {
-        unsafe: true,
-        ecma: 6
-    }
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        new Function("aa, [bb]", 'return aa;');
-        new Function("aa, {bb}", 'return aa;');
-        new Function("[[aa]], [{bb}]", 'return aa;');
-    }
-    expect: {
-        Function("a", "[b]", "return a");
-        Function("a", "{bb}", "return a");
-        Function("[[a]]", "[{bb}]", 'return a');
-    }
-}
-
-

test/compress/issue-640.js

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

test/compress/issue-926.js

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

test/compress/join-vars.js

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

test/compress/loops.js

@@ -245,7 +245,7 @@ issue_1532: {
 issue_186: {
     beautify = {
         beautify: false,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -264,7 +264,7 @@ issue_186: {
 issue_186_ie8: {
     beautify = {
         beautify: false,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -283,7 +283,7 @@ issue_186_ie8: {
 issue_186_beautify: {
     beautify = {
         beautify: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -310,7 +310,7 @@ issue_186_beautify: {
 issue_186_beautify_ie8: {
     beautify = {
         beautify: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -340,7 +340,7 @@ issue_186_bracketize: {
     beautify = {
         beautify: false,
         bracketize: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -360,7 +360,7 @@ issue_186_bracketize_ie8: {
     beautify = {
         beautify: false,
         bracketize: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;
@@ -380,7 +380,7 @@ issue_186_beautify_bracketize: {
     beautify = {
         beautify: true,
         bracketize: true,
-        ie8: false,
+        screw_ie8: true,
     }
     input: {
         var x = 3;
@@ -412,7 +412,7 @@ issue_186_beautify_bracketize_ie8: {
     beautify = {
         beautify: true,
         bracketize: true,
-        ie8: true,
+        screw_ie8: false,
     }
     input: {
         var x = 3;

test/compress/negate-iife.js

@@ -25,9 +25,11 @@ negate_iife_2: {
         negate_iife: true
     };
     input: {
+        (function(){ return {} })().x = 10; // should not transform this one
+    }
+    expect: {
         (function(){ return {} })().x = 10;
     }
-    expect_exact: "({}).x=10;"
 }
 
 negate_iife_2_side_effects: {
@@ -36,9 +38,11 @@ negate_iife_2_side_effects: {
         side_effects: true,
     }
     input: {
+        (function(){ return {} })().x = 10; // should not transform this one
+    }
+    expect: {
         (function(){ return {} })().x = 10;
     }
-    expect_exact: "({}).x=10;"
 }
 
 negate_iife_3: {

test/compress/new.js

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

test/compress/object.js

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

test/compress/parameters.js

@@ -1,180 +0,0 @@
-arrow_functions: {
-    input: {
-        (a) => b;  // 1 args
-        (a, b) => c;  // n args
-        () => b;  // 0 args
-        (a) => (b) => c;  // func returns func returns func
-        (a) => ((b) => c);  // So these parens are dropped
-        () => (b,c) => d;  // func returns func returns func
-        a=>{return b;}
-        a => 'lel';  // Dropping the parens
-    }
-    expect_exact: "a=>b;(a,b)=>c;()=>b;a=>b=>c;a=>b=>c;()=>(b,c)=>d;a=>b;a=>\"lel\";"
-}
-
-arrow_return: {
-    input: {
-        () => {};
-        () => { return; };
-        a => { return 1; }
-        a => { return -b }
-        a => { return b; var b; }
-        (x, y) => { return x - y; }
-    }
-    expect_exact: "()=>{};()=>{};a=>1;a=>-b;a=>{return b;var b};(x,y)=>x-y;"
-}
-
-regression_arrow_functions_and_hoist: {
-    options = {
-        hoist_vars: true,
-        hoist_funs: true
-    }
-    input: {
-        (a) => b;
-    }
-    expect_exact: "a=>b;"
-}
-
-regression_assign_arrow_functions: {
-    input: {
-        oninstall = e => false;
-        oninstall = () => false;
-    }
-    expect: {
-        oninstall=e=>false;
-        oninstall=()=>false;
-    }
-}
-
-destructuring_arguments_1: {
-    input: {
-        (function ( a ) { });
-        (function ( [ a ] ) { });
-        (function ( [ a, b ] ) { });
-        (function ( [ [ a ] ] ) { });
-        (function ( [ [ a, b ] ] ) { });
-        (function ( [ a, [ b ] ] ) { });
-        (function ( [ [ b ], a ] ) { });
-
-        (function ( { a } ) { });
-        (function ( { a, b } ) { });
-
-        (function ( [ { a } ] ) { });
-        (function ( [ { a, b } ] ) { });
-        (function ( [ a, { b } ] ) { });
-        (function ( [ { b }, a ] ) { });
-
-        ( [ a ] ) => { };
-        ( [ a, b ] ) => { };
-
-        ( { a } ) => { };
-        ( { a, b, c, d, e } ) => { };
-
-        ( [ a ] ) => b;
-        ( [ a, b ] ) => c;
-
-        ( { a } ) => b;
-        ( { a, b } ) => c;
-    }
-    expect: {
-        (function(a){});
-        (function([a]){});
-        (function([a,b]){});
-        (function([[a]]){});
-        (function([[a,b]]){});
-        (function([a,[b]]){});
-        (function([[b],a]){});
-
-        (function({a}){});
-        (function({a,b}){});
-
-        (function([{a}]){});
-        (function([{a,b}]){});
-        (function([a,{b}]){});
-        (function([{b},a]){});
-
-        ([a])=>{};
-        ([a,b])=>{};
-
-        ({a})=>{};
-        ({a,b,c,d,e})=>{};
-
-        ([a])=>b;
-        ([a,b])=>c;
-
-        ({a})=>b;
-        ({a,b})=>c;
-    }
-}
-
-destructuring_arguments_2: {
-    input: {
-        (function([]) {});
-        (function({}) {});
-        (function([,,,,,]) {});
-        (function ([a, {b: c}]) {});
-        (function ([...args]) {});
-        (function ({x,}) {});
-        class a { *method({ [thrower()]: x } = {}) {}};
-        (function(a, b, c, d, [{e: [...f]}]){})(1, 2, 3, 4, [{e: [1, 2, 3]}]);
-    }
-    expect: {
-        (function([]) {});
-        (function({}) {});
-        (function([,,,,,]) {});
-        (function ([a, {b: c}]) {});
-        (function ([...args]) {});
-        (function ({x,}) {});
-        class a { *method({ [thrower()]: x } = {}) {}};
-        (function(a, b, c, d, [{e: [...f]}]){})(1, 2, 3, 4, [{e: [1, 2, 3]}]);
-    }
-}
-
-destructuring_arguments_3: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function fn3({x: {y: {z: {} = 42}}}) {}
-        const { cover = (function () {}), xCover = (0, function() {})  } = {};
-        let { cover = (function () {}), xCover = (0, function() {})  } = {};
-        var { cover = (function () {}), xCover = (0, function() {})  } = {};
-    }
-    expect_exact: "function fn3({x:{y:{z:{}=42}}}){}const{cover=function(){},xCover=(0,function(){})}={};let{cover=function(){},xCover=(0,function(){})}={};var{cover=function(){},xCover=(0,function(){})}={};"
-}
-
-default_arguments: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function x(a = 6) { }
-        function x(a = (6 + 5)) { }
-        function x({ foo } = {}, [ bar ] = [ 1 ]) { }
-    }
-    expect_exact: "function x(a=6){}function x(a=6+5){}function x({foo}={},[bar]=[1]){}"
-}
-
-default_values_in_destructurings: {
-    beautify = {
-        ecma: 6
-    }
-    input: {
-        function x({a=(4), b}) {}
-        function x([b, c=(12)]) {}
-        var { x = (6), y } = x;
-        var [ x, y = (6) ] = x;
-    }
-    expect_exact: "function x({a=4,b}){}function x([b,c=12]){}var{x=6,y}=x;var[x,y=6]=x;"
-}
-
-accept_duplicated_parameters_in_non_strict_without_spread_or_default_assignment: {
-    input: {
-        function a(b, b){}
-        function b({c: test, c: test}){}
-    }
-    expect: {
-        function a(b, b){}
-        function b({c: test, c: test}){}
-    }
-}

test/compress/properties.js

@@ -13,7 +13,7 @@ keep_properties: {
 dot_properties: {
     options = {
         properties: true,
-        ie8: true,
+        screw_ie8: false
     };
     input: {
         a["foo"] = "bar";
@@ -36,7 +36,7 @@ dot_properties: {
 dot_properties_es5: {
     options = {
         properties: true,
-        ie8: false,
+        screw_ie8: true
     };
     input: {
         a["foo"] = "bar";
@@ -125,7 +125,7 @@ evaluate_string_length: {
 
 mangle_properties: {
     mangle_props = {
-        keep_quoted: false
+        ignore_quoted: false
     };
     input: {
         a["foo"] = "bar";
@@ -148,8 +148,7 @@ mangle_unquoted_properties: {
         properties: false
     }
     mangle_props = {
-        builtins: true,
-        keep_quoted: true
+        ignore_quoted: true
     }
     beautify = {
         beautify: false,
@@ -234,13 +233,12 @@ mangle_debug_suffix: {
     }
 }
 
-mangle_debug_suffix_keep_quoted: {
+mangle_debug_suffix_ignore_quoted: {
     options = {
         properties: false
     }
     mangle_props = {
-        builtins: true,
-        keep_quoted: true,
+        ignore_quoted: true,
         debug: "XYZ",
         reserved: []
     }

test/compress/pure_getters.js

@@ -119,3 +119,62 @@ chained: {
         a.b.c;
     }
 }
+
+impure_getter_1: {
+    options = {
+        pure_getters: "strict",
+        side_effects: true,
+    }
+    input: {
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).a;
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).b;
+    }
+    expect: {
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).a;
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).b;
+    }
+    expect_stdout: "1"
+}
+
+impure_getter_2: {
+    options = {
+        pure_getters: true,
+        side_effects: true,
+    }
+    input: {
+        // will produce incorrect output because getter is not pure
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).a;
+        ({
+            get a() {
+                console.log(1);
+            },
+            b: 1
+        }).b;
+    }
+    expect: {}
+}

test/compress/reduce_vars.js

@@ -41,20 +41,22 @@ reduce_vars: {
         var A = 1;
         (function() {
             console.log(-3);
-            console.log(-4);
+            console.log(A - 5);
         })();
         (function f1() {
             var a = 2;
-            console.log(-3);
+            console.log(a - 5);
             eval("console.log(a);");
         })();
         (function f2(eval) {
             var a = 2;
-            console.log(-3);
+            console.log(a - 5);
             eval("console.log(a);");
         })(eval);
-        "yes";
-        console.log(2);
+        (function() {
+            return "yes";
+        })();
+        console.log(A + 1);
     }
     expect_stdout: true
 }
@@ -64,7 +66,7 @@ modified: {
         conditionals  : true,
         evaluate      : true,
         reduce_vars   : true,
-        unused        : true,
+        unused        : true
     }
     input: {
         function f0() {
@@ -134,11 +136,12 @@ modified: {
         }
 
         function f2() {
-            3;
+            var b = 2;
+            b = 3;
+            console.log(1 + b);
+            console.log(b + 3);
             console.log(4);
-            console.log(6);
-            console.log(4);
-            console.log(7);
+            console.log(1 + b + 3);
         }
 
         function f3() {
@@ -387,11 +390,12 @@ passes: {
     }
     expect: {
         function f() {
-            3;
+            var b = 2;
+            b = 3;
+            console.log(1 + b);
+            console.log(b + 3);
             console.log(4);
-            console.log(6);
-            console.log(4);
-            console.log(7);
+            console.log(1 + b + 3);
         }
     }
 }
@@ -584,7 +588,7 @@ inner_var_label: {
     }
 }
 
-inner_var_for_1: {
+inner_var_for: {
     options = {
         evaluate: true,
         reduce_vars: true,
@@ -613,29 +617,6 @@ inner_var_for_1: {
     }
 }
 
-inner_var_for_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = 1;
-            for (var b = 1; --b;) var a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            a = 1;
-            for (var b = 1; --b;) var a = 2;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "1"
-}
-
 inner_var_for_in_1: {
     options = {
         evaluate: true,
@@ -1673,7 +1654,7 @@ redefine_arguments_1: {
             return typeof arguments;
         }
         function g() {
-            return "number";
+            return"number";
         }
         function h(x) {
             var arguments = x;
@@ -1712,7 +1693,9 @@ redefine_arguments_2: {
         console.log(function() {
             var arguments;
             return typeof arguments;
-        }(), "number", function(x) {
+        }(), function() {
+            return"number";
+        }(), function(x) {
             var arguments = x;
             return typeof arguments;
         }());
@@ -1749,7 +1732,10 @@ redefine_arguments_3: {
         console.log(function() {
             var arguments;
             return typeof arguments;
-        }(), "number", "undefined");
+        }(), "number", function(x) {
+            var arguments = x;
+            return typeof arguments;
+        }());
     }
     expect_stdout: "object number undefined"
 }
@@ -1821,7 +1807,9 @@ redefine_farg_2: {
         console.log(function(a) {
             var a;
             return typeof a;
-        }([]), "number",function(a, b) {
+        }([]), function() {
+            return "number";
+        }(),function(a, b) {
             var a = b;
             return typeof a;
         }([]));
@@ -1858,7 +1846,10 @@ redefine_farg_3: {
         console.log(function(a) {
             var a;
             return typeof a;
-        }([]), "number", "undefined");
+        }([]), "number", function(a) {
+            var a = void 0;
+            return typeof a;
+        }([]));
     }
     expect_stdout: "object number undefined"
 }
@@ -1978,6 +1969,7 @@ pure_getters_2: {
         var a = a && a.b;
     }
     expect: {
+        var a;
         var a = a && a.b;
     }
 }
@@ -2022,167 +2014,6 @@ catch_var: {
     expect_stdout: "true"
 }
 
-var_assign_1: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            console.log(2);
-        }();
-    }
-    expect_stdout: "2"
-}
-
-var_assign_2: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            if (a = 2) console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            if (2) console.log(2);
-        }();
-    }
-    expect_stdout: "2"
-}
-
-var_assign_3: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            while (a = 2);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            while (a = 2);
-            console.log(a);
-        }();
-    }
-}
-
-var_assign_4: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function a() {
-            a = 2;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function a() {
-            a = 2,
-            console.log(a);
-        }();
-    }
-}
-
-var_assign_5: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            !function(b) {
-                a = 2;
-                console.log(a, b);
-            }(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            !function(b) {
-                a = 2,
-                console.log(a, b);
-            }(a);
-        }();
-    }
-    expect_stdout: "2 undefined"
-}
-
-var_assign_6: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = function(){}(a = 1);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = function(){}(a = 1);
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-immutable: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = "test";
-            console.log(a.indexOf("e"));
-        }();
-    }
-    expect: {
-        !function() {
-            console.log("test".indexOf("e"));
-        }();
-    }
-    expect_stdout: "1"
-}
-
 issue_1814_1: {
     options = {
         evaluate: true,
@@ -2266,173 +2097,6 @@ try_abort: {
     expect_stdout: "1 undefined"
 }
 
-boolean_binary_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            void 0 && (a = 1);
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            void 0;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-cond_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a;
-            void 0 ? (a = 1) : 0;
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a;
-            void 0 ? (a = 1) : 0;
-            console.log(a);
-        }();
-    }
-    expect_stdout: "undefined"
-}
-
-iife_assign: {
-    options = {
-        evaluate: true,
-        reduce_vars: true,
-        unused: true,
-    }
-    input: {
-        !function() {
-            var a = 1, b = 0;
-            !function() {
-                b++;
-                return;
-                a = 2;
-            }();
-            console.log(a);
-        }();
-    }
-    expect: {
-        !function() {
-            var a = 1, b = 0;
-            !function() {
-                b++;
-                return;
-                a = 2;
-            }();
-            console.log(a);
-        }();
-    }
-    expect_stdout: "1"
-}
-
-issue_1850_1: {
-    options = {
-        reduce_vars: true,
-        toplevel: false,
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect_stdout: true
-}
-
-issue_1850_2: {
-    options = {
-        reduce_vars: true,
-        toplevel: "funcs",
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        var a = 1;
-        (function() {
-            console.log(a, a, a);
-        })();
-    }
-    expect_stdout: true
-}
-
-issue_1850_3: {
-    options = {
-        reduce_vars: true,
-        toplevel: "vars",
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect_stdout: true
-}
-
-issue_1850_4: {
-    options = {
-        reduce_vars: true,
-        toplevel: true,
-        unused: true,
-    }
-    input: {
-        function f() {
-            console.log(a, a, a);
-        }
-        var a = 1;
-        f();
-    }
-    expect: {
-        var a = 1;
-        (function() {
-            console.log(a, a, a);
-        })();
-    }
-    expect_stdout: true
-}
-
 issue_1865: {
     options = {
         evaluate: true,
@@ -2461,3 +2125,76 @@ issue_1865: {
     }
     expect_stdout: true
 }
+
+issue_1922_1: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        console.log(function(a) {
+            arguments[0] = 2;
+            return a;
+        }(1));
+    }
+    expect: {
+        console.log(function(a) {
+            arguments[0] = 2;
+            return a;
+        }(1));
+    }
+    expect_stdout: "2"
+}
+
+issue_1922_2: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        console.log(function() {
+            var a;
+            eval("a = 1");
+            return a;
+        }(1));
+    }
+    expect: {
+        console.log(function() {
+            var a;
+            eval("a = 1");
+            return a;
+        }(1));
+    }
+    expect_stdout: "1"
+}
+
+accessor: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        toplevel: true,
+    }
+    input: {
+        var a = 1;
+        console.log({
+            get a() {
+                a = 2;
+                return a;
+            },
+            b: 1
+        }.b, a);
+    }
+    expect: {
+        var a = 1;
+        console.log({
+            get a() {
+                a = 2;
+                return a;
+            },
+            b: 1
+        }.b, a);
+    }
+    expect_stdout: "1 1"
+}

test/compress/screw-ie8.js

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

test/compress/sequences.js

@@ -460,7 +460,7 @@ issue_1758: {
         console.log(function(c) {
             var undefined = 42;
             return function() {
-                return c--, c--, void c.toString();
+                return c--, c--, c.toString(), void 0;
             }();
         }());
     }
@@ -481,12 +481,12 @@ delete_seq_1: {
         console.log(delete (1, 0 / 0));
     }
     expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
+        console.log((void 0, !0));
+        console.log((void 0, !0));
+        console.log((1 / 0, !0));
+        console.log((1 / 0, !0));
+        console.log((NaN, !0));
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -505,12 +505,12 @@ delete_seq_2: {
         console.log(delete (1, 2, 0 / 0));
     }
     expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
+        console.log((void 0, !0));
+        console.log((void 0, !0));
+        console.log((1 / 0, !0));
+        console.log((1 / 0, !0));
+        console.log((NaN, !0));
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -530,12 +530,12 @@ delete_seq_3: {
         console.log(delete (1, 2, 0 / 0));
     }
     expect: {
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
-        console.log(!0);
+        console.log((void 0, !0));
+        console.log((void 0, !0));
+        console.log((Infinity, !0));
+        console.log((1 / 0, !0));
+        console.log((NaN, !0));
+        console.log((0 / 0, !0));
     }
     expect_stdout: true
 }
@@ -606,107 +606,31 @@ delete_seq_6: {
     }
     expect: {
         var a;
-        console.log(!0);
+        console.log((a, !0));
     }
     expect_stdout: true
 }
 
-side_effects: {
+reassign_const: {
     options = {
+        cascade: true,
         sequences: true,
         side_effects: true,
     }
     input: {
-        0, a(), 1, b(), 2, c(), 3;
+        function f() {
+            const a = 1;
+            a++;
+            return a;
+        }
+        console.log(f());
     }
     expect: {
-        a(), b(), c();
-    }
-}
-
-side_effects_cascade_1: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        sequences: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            a -= 42;
-            if (a < 0) a = 0;
-            b.a = a;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            (a -= 42) < 0 && (a = 0), b.a = a;
-        }
-    }
-}
-
-side_effects_cascade_2: {
-    options = {
-        cascade: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            b = a,
-            !a + (b += a) || (b += a),
-            b = a,
-            b;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            b = a,
-            !a + (b += a) || (b += a),
-            b = a;
-        }
-    }
-}
-
-side_effects_cascade_3: {
-    options = {
-        cascade: true,
-        conditionals: true,
-        side_effects: true,
-    }
-    input: {
-        function f(a, b) {
-            "foo" ^ (b += a),
-            b ? false : (b = a) ? -1 : (b -= a) - (b ^= a),
-            a-- || !a,
-            a;
-        }
-    }
-    expect: {
-        function f(a, b) {
-            !(b += a) && ((b = a) || (b -= a, b ^= a)),
-            --a;
-        }
-    }
-}
-
-issue_27: {
-    options = {
-        cascade: true,
-        passes: 2,
-        sequences: true,
-        side_effects: true,
-        unused: true,
-    }
-    input: {
-        (function(jQuery) {
-            var $;
-            $ = jQuery;
-            $("body").addClass("foo");
-        })(jQuery);
-    }
-    expect: {
-        (function(jQuery) {
-            jQuery("body").addClass("foo");
-        })(jQuery);
+        function f() {
+            const a = 1;
+            return a++, a;
+        }
+        console.log(f());
     }
+    expect_stdout: true
 }

test/compress/super.js

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

test/compress/template-string.js

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

test/compress/try-catch.js

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

test/compress/unicode.js

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

test/compress/yield.js

@@ -1,192 +0,0 @@
-generators: {
-    input: {
-        function* fn() {};
-    }
-    expect_exact: "function*fn(){}"
-}
-
-generators_yield: {
-    input: {
-      function* fn() {
-        yield remote();
-      }
-    }
-    expect_exact: "function*fn(){yield remote()}"
-}
-
-generators_yield_assign: {
-    input: {
-      function* fn() {
-          var x = {};
-          x.prop = yield 5;
-      }
-    }
-    expect_exact: "function*fn(){var x={};x.prop=yield 5}"
-}
-
-generator_yield_undefined: {
-    input: {
-        function* fn() {
-            yield;
-        }
-    }
-    expect_exact: "function*fn(){yield}"
-}
-
-yield_optimize_expression: {
-    options = {
-    }
-    input: {
-        function* f1() { yield; }
-        function* f2() { yield undefined; }
-        function* f3() { yield null; }
-        function* f4() { yield* undefined; }
-    }
-    expect: {
-        function* f1() { yield }
-        function* f2() { yield; }
-        function* f3() { yield null; }
-        function* f4() { yield* void 0; }
-    }
-}
-
-yield_statements: {
-    input: {
-        function* fn() {
-            var a = (yield 1) + (yield 2);
-            var b = (yield 3) === (yield 4);
-            var c = (yield 5) << (yield 6);
-            var d = yield 7;
-            var e = (yield 8) ? yield 9 : yield 10;
-            var f = -(yield 11);
-        }
-    }
-    expect_exact: "function*fn(){var a=(yield 1)+(yield 2);var b=(yield 3)===(yield 4);var c=(yield 5)<<(yield 6);var d=yield 7;var e=(yield 8)?yield 9:yield 10;var f=-(yield 11)}"
-}
-
-yield_as_identifier_in_function_in_generator: {
-    input: {
-        var g = function*() {
-            function h() {
-                yield = 1;
-            }
-        };
-    }
-    expect: {
-        var g = function*() {
-            function h() {
-                yield = 1;
-            }
-        };
-    }
-}
-
-yield_before_punctuators: {
-    input: {
-        iter = (function*() {
-            assignmentResult = [ x = yield ] = value;
-        })();
-        function* g1() { (yield) }
-        function* g2() { [yield] }
-        function* g3() { return {yield} } // Added return to avoid {} drop
-        function* g4() { yield, yield; }
-        function* g5() { (yield) ? yield : yield; }
-    }
-    expect: {
-        iter = (function*() {
-            assignmentResult = [ x = yield ] = value;
-        })();
-        function* g1() { (yield) }
-        function* g2() { [yield] }
-        function* g3() { return {yield} }
-        function* g4() { yield, yield; }
-        function* g5() { (yield) ? yield : yield; }
-    }
-}
-
-yield_as_identifier_outside_strict_mode: {
-    input: {
-        import yield from "bar";
-        yield = 123;
-        while (true) {
-            yield:
-            for(;;) break yield;
-
-            foo();
-        }
-        while (true)
-            yield: for(;;) continue yield;
-        function yield(){}
-        function foo(...yield){}
-        try { new Error("") } catch (yield) {}
-        var yield = "foo";
-    }
-    expect: {
-        import yield from "bar";
-        yield = 123;
-        while (true) {
-            yield:
-            for(;;) break yield;
-
-            foo();
-        }
-        while (true)
-            yield: for(;;) continue yield;
-        function yield(){}
-        function foo(...yield){}
-        try { new Error("") } catch (yield) {}
-        var yield = "foo";
-    }
-}
-
-empty_generator_as_parameter_with_side_effects: {
-    options = {
-        side_effects: true
-    }
-    input: {
-        var GeneratorPrototype = Object.getPrototypeOf(
-          Object.getPrototypeOf(function*() {}())
-        );
-        evaluate(GeneratorPrototype);
-    }
-    expect_exact: "var GeneratorPrototype=Object.getPrototypeOf(Object.getPrototypeOf(function*(){}()));evaluate(GeneratorPrototype);"
-}
-
-empty_generator_as_parameter_without_side_effects: {
-    options = {
-        side_effects: false
-    }
-    input: {
-        var GeneratorPrototype = Object.getPrototypeOf(
-          Object.getPrototypeOf(function*() {}())
-        );
-        evaluate(GeneratorPrototype);
-    }
-    expect_exact: "var GeneratorPrototype=Object.getPrototypeOf(Object.getPrototypeOf(function*(){}()));evaluate(GeneratorPrototype);"
-}
-
-yield_dot: {
-    options = {
-    }
-    input: {
-        function* foo(){
-            yield x.foo;
-            (yield x).foo;
-            yield (yield obj.foo()).bar();
-        }
-    }
-    expect_exact: "function*foo(){yield x.foo;(yield x).foo;yield(yield obj.foo()).bar()}"
-}
-
-yield_sub: {
-    options = {
-    }
-    input: {
-        function* foo(){
-            yield x['foo'];
-            (yield x)['foo'];
-            yield (yield obj.foo())['bar']();
-        }
-    }
-    expect_exact: 'function*foo(){yield x["foo"];(yield x)["foo"];yield(yield obj.foo())["bar"]()}'
-}

test/exports.js

@@ -1,13 +0,0 @@
-exports["Compressor"] = Compressor;
-exports["JS_Parse_Error"] = JS_Parse_Error;
-exports["OutputStream"] = OutputStream;
-exports["SourceMap"] = SourceMap;
-exports["TreeWalker"] = TreeWalker;
-exports["base54"] = base54;
-exports["defaults"] = defaults;
-exports["mangle_properties"] = mangle_properties;
-exports["minify"] = minify;
-exports["parse"] = parse;
-exports["string_template"] = string_template;
-exports["tokenizer"] = tokenizer;
-exports["is_identifier"] = is_identifier;

test/input/invalid/const.js

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

test/input/invalid/delete.js

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

test/input/invalid/else.js

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

test/input/invalid/function_1.js

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

test/input/invalid/function_2.js

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

test/input/invalid/function_3.js

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

test/input/invalid/return.js

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

test/input/invalid/try.js

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

test/input/invalid/var.js

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

test/jetstream.js

@@ -12,7 +12,7 @@ if (typeof phantom == "undefined") {
     });
     var args = process.argv.slice(2);
     if (!args.length) {
-        args.push("-mc");
+        args.push("-mc", "warnings=false");
     }
     args.push("--stats");
     var child_process = require("child_process");

test/mocha/accessorTokens-1492.js

@@ -1,4 +1,4 @@
-var UglifyJS = require("../node");
+var UglifyJS = require('../../');
 var assert = require("assert");
 
 describe("Accessor tokens", function() {
@@ -16,8 +16,8 @@ describe("Accessor tokens", function() {
                 assert.equal(node.start.pos, 12);
                 assert.equal(node.end.endpos, 46);
 
-                assert(node.key instanceof UglifyJS.AST_SymbolMethod);
-                assert.equal(node.key.start.pos, 12);
+                assert(node.key instanceof UglifyJS.AST_SymbolAccessor);
+                assert.equal(node.key.start.pos, 16);
                 assert.equal(node.key.end.endpos, 22);
 
                 assert(node.value instanceof UglifyJS.AST_Accessor);

test/mocha/arguments.js

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

test/mocha/arrow.js

@@ -1,402 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Arrow functions", function() {
-    it("Should not accept spread tokens on non-last parameters or without arguments parentheses", function() {
-        var tests = [
-            "var a = ...a => {return a.join()}",
-            "var b = (a, ...b, c) => { return a + b.join() + c}",
-            "var c = (...a, b) => a.join()"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected token: expand (...)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept holes in object binding patterns, while still allowing a trailing elision", function() {
-        var tests = [
-            "f = ({, , ...x} = [1, 2]) => {};"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected token: punc (,)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept newlines before arrow token", function() {
-        var tests = [
-            "f = foo\n=> 'foo';",
-            "f = (foo, bar)\n=> 'foo';",
-            "f = ()\n=> 'foo';",
-            "foo((bar)\n=>'baz';);"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected newline before arrow (=>)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept arrow functions in the middle or end of an expression", function() {
-        var tests = [
-            "typeof x => 0",
-            "0 + x => 0"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Unexpected token: arrow (=>)";
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-
-    it("Should parse a function containing default assignment correctly", function() {
-        var ast = uglify.parse("var a = (a = 123) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_Number);
-
-        ast = uglify.parse("var a = (a = a) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].right instanceof uglify.AST_SymbolRef);
-    });
-
-    it("Should parse a function containing default assignments in destructuring correctly", function() {
-        var ast = uglify.parse("var a = ([a = 123]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a = 123}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // First object element in first argument
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a: a = 123}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // First argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-
-        // Content destructuring of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectProperty);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.right instanceof uglify.AST_Number);
-    });
-
-    it("Should parse a function containing default assignments in complex destructuring correctly", function() {
-        var ast = uglify.parse("var a = ([a, [b = 123]]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, true);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ([a, {b: c = 123}]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].is_array, false);
-
-        // Check content of second destructuring element (which is the nested destructuring pattern)
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].key, "b");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.operator, "=");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a, b: {b = 123}}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 2);
-
-        // First argument, property 1
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_SymbolFunarg);
-
-        // First argument, property 2
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[1].key, "b");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1].value instanceof uglify.AST_Destructuring);
-
-        // Check content of nested destructuring
-        var content = ast.body[0].definitions[0].value.argnames[0].names[1].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // Content of first property in nested destructuring
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof uglify.AST_Number);
-
-
-        ast = uglify.parse("var a = ({a: {b = 123}}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first argument
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-
-        // Check whole destructuring structure of first argument
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
-
-        // Check content of nested destructuring
-        content = ast.body[0].definitions[0].value.argnames[0].names[0].value
-        assert.strictEqual(content.is_array, false);
-        assert.strictEqual(content.names.length, 1);
-        assert(content.names[0] instanceof uglify.AST_ObjectKeyVal);
-
-        // Check first property of nested destructuring
-        assert.strictEqual(content.names[0].key, "b");
-        assert(content.names[0].value instanceof uglify.AST_DefaultAssign);
-        assert(content.names[0].value.left instanceof uglify.AST_SymbolFunarg);
-        assert.strictEqual(content.names[0].value.operator, "=");
-        assert(content.names[0].value.right instanceof uglify.AST_Number);
-    });
-
-    it("Should parse spread correctly", function() {
-        var ast = uglify.parse("var a = (a, b, ...c) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 3);
-
-        // Check parameters
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[2] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[2].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ([a, b, ...c]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-
-        // Check content first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ([a, b, [c, ...d]]) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, true);
-
-        // Check content outer destructuring array
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[1] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[2].names.length, 2);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[2].names[1].expression instanceof uglify.AST_SymbolFunarg);
-
-
-        ast = uglify.parse("var a = ({a: [b, ...c]}) => {}");
-        assert(ast.body[0] instanceof uglify.AST_Var);
-        assert.strictEqual(ast.body[0].definitions.length, 1);
-        assert(ast.body[0].definitions[0] instanceof uglify.AST_VarDef);
-        assert(ast.body[0].definitions[0].name instanceof uglify.AST_SymbolVar);
-        assert(ast.body[0].definitions[0].value instanceof uglify.AST_Arrow);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames.length, 1);
-
-        // Check first parameter
-        assert(ast.body[0].definitions[0].value.argnames[0] instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].is_array, false);
-
-        // Check outer destructuring object
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names.length, 1);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0] instanceof uglify.AST_ObjectKeyVal);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].key, "a");
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value instanceof uglify.AST_Destructuring);
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.is_array, true);
-
-        // Check content nested destructuring array
-        assert.strictEqual(ast.body[0].definitions[0].value.argnames[0].names[0].value.names.length, 2);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[0] instanceof uglify.AST_SymbolFunarg);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1] instanceof uglify.AST_Expansion);
-        assert(ast.body[0].definitions[0].value.argnames[0].names[0].value.names[1].expression instanceof uglify.AST_SymbolFunarg);
-    });
-
-    it("Should handle arrow function with bind", function() {
-        function minify(code) {
-            return uglify.minify(code, {
-                mangle: false
-            }).code;
-        }
-
-        assert.strictEqual(
-            minify(minify("test(((index) => { console.log(this, index); }).bind(this, 1));")),
-            "test((index=>{console.log(this,index)}).bind(this,1));"
-        );
-        assert.strictEqual(
-            minify(minify('test(((index) => { console.log(this, index); })["bind"](this, 1));')),
-            "test((index=>{console.log(this,index)}).bind(this,1));"
-        );
-    });
-
-});

test/mocha/builtins.js

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

test/mocha/class.js

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

test/mocha/cli.js

@@ -2,10 +2,6 @@ var assert = require("assert");
 var exec = require("child_process").exec;
 var readFileSync = require("fs").readFileSync;
 
-function read(path) {
-    return readFileSync(path, "utf8");
-}
-
 describe("bin/uglifyjs", function () {
     var uglifyjscmd = '"' + process.argv[0] + '" bin/uglifyjs';
     it("should produce a functional build when using --self", function (done) {
@@ -19,12 +15,12 @@ describe("bin/uglifyjs", function () {
             eval(stdout);
 
             assert.strictEqual(typeof WrappedUglifyJS, 'object');
-            assert.strictEqual(WrappedUglifyJS.minify("foo([true,,2+3]);").code, "foo([!0,,5]);");
+            assert.strictEqual(true, WrappedUglifyJS.parse('foo;') instanceof WrappedUglifyJS.AST_Node);
 
             done();
         });
     });
-    it("Should be able to filter comments correctly with `--comments all`", function (done) {
+    it("Should be able to filter comments correctly with `--comment all`", function (done) {
         var command = uglifyjscmd + ' test/input/comments/filter.js --comments all';
 
         exec(command, function (err, stdout) {
@@ -54,18 +50,18 @@ describe("bin/uglifyjs", function () {
             done();
         });
     });
-    it("Should append source map to output when using --source-map url=inline", function (done) {
-       var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map url=inline";
+    it("Should append source map to output when using --source-map-inline", function (done) {
+        var command = uglifyjscmd + ' test/input/issue-1323/sample.js --source-map-inline';
 
-       exec(command, function (err, stdout) {
-           if (err) throw err;
+        exec(command, function (err, stdout) {
+            if (err) throw err;
 
-           assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n" +
-               "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=\n");
-           done();
-       });
+            assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n" +
+                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=\n");
+            done();
+        });
     });
-    it("should not append source map to output when not using --source-map url=inline", function (done) {
+    it("should not append source map to output when not using --source-map-inline", function (done) {
         var command = uglifyjscmd + ' test/input/issue-1323/sample.js';
 
         exec(command, function (err, stdout) {
@@ -76,134 +72,130 @@ describe("bin/uglifyjs", function () {
         });
     });
     it("Should work with --keep-fnames (mangle only)", function (done) {
-       var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
-           done();
-       });
-    });
-    it("Should work with --keep-fnames (mangle & compress)", function (done) {
-       var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m -c unused=false';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(5==f(g)());\n");
-           done();
-       });
-    });
-    it("Should work with keep_fnames under mangler options", function (done) {
-       var command = uglifyjscmd + ' test/input/issue-1431/sample.js -m keep_fnames=true';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
-           done();
-       });
-    });
-    it("Should work with --define (simple)", function (done) {
-       var command = uglifyjscmd + ' test/input/global_defs/simple.js --define D=5 -c';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "console.log(5);\n");
-           done();
-       });
-    });
-    it("Should work with --define (nested)", function (done) {
-       var command = uglifyjscmd + ' test/input/global_defs/nested.js --define C.D=5,C.V=3 -c';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "console.log(3,5);\n");
-           done();
-       });
-    });
-    it("Should work with --define (AST_Node)", function (done) {
-       var command = uglifyjscmd + ' test/input/global_defs/simple.js --define console.log=stdout.println -c';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, "stdout.println(D);\n");
-           done();
-       });
-    });
-    it("Should work with `--beautify`", function (done) {
-       var command = uglifyjscmd + ' test/input/issue-1482/input.js -b';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, read("test/input/issue-1482/default.js"));
-           done();
-       });
-    });
-    it("Should work with `--beautify bracketize`", function (done) {
-       var command = uglifyjscmd + ' test/input/issue-1482/input.js -b bracketize';
-
-       exec(command, function (err, stdout) {
-           if (err) throw err;
-
-           assert.strictEqual(stdout, read("test/input/issue-1482/bracketize.js"));
-           done();
-       });
-    });
-    it("Should process inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js -mc toplevel --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m';
 
         exec(command, function (err, stdout) {
             if (err) throw err;
 
-            assert.strictEqual(stdout, read("test/input/issue-520/output.js"));
+            assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
+            done();
+        });
+    });
+    it("Should work with --keep-fnames (mangle & compress)", function (done) {
+        var command = uglifyjscmd + ' test/input/issue-1431/sample.js --keep-fnames -m -c unused=false';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(5==f(g)());\n");
+            done();
+        });
+    });
+    it("Should work with keep_fnames under mangler options", function (done) {
+        var command = uglifyjscmd + ' test/input/issue-1431/sample.js -m keep_fnames=true';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
+            done();
+        });
+    });
+    it("Should work with --define (simple)", function (done) {
+        var command = uglifyjscmd + ' test/input/global_defs/simple.js --define D=5 -c';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "console.log(5);\n");
+            done();
+        });
+    });
+    it("Should work with --define (nested)", function (done) {
+        var command = uglifyjscmd + ' test/input/global_defs/nested.js --define C.D=5,C.V=3 -c';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "console.log(3,5);\n");
+            done();
+        });
+    });
+    it("Should work with --define (AST_Node)", function (done) {
+        var command = uglifyjscmd + ' test/input/global_defs/simple.js --define console.log=stdout.println -c';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "stdout.println(D);\n");
+            done();
+        });
+    });
+    it("Should work with `--beautify`", function (done) {
+        var command = uglifyjscmd + ' test/input/issue-1482/input.js -b';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, readFileSync("test/input/issue-1482/default.js", "utf8"));
+            done();
+        });
+    });
+    it("Should work with `--beautify bracketize`", function (done) {
+        var command = uglifyjscmd + ' test/input/issue-1482/input.js -b bracketize';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, readFileSync("test/input/issue-1482/bracketize.js", "utf8"));
+            done();
+        });
+    });
+    it("Should process inline source map", function(done) {
+        var command = uglifyjscmd + ' test/input/issue-520/input.js -mc toplevel --in-source-map inline --source-map-inline';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, readFileSync("test/input/issue-520/output.js", "utf8"));
             done();
         });
     });
     it("Should warn for missing inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-1323/sample.js --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-1323/sample.js --in-source-map inline';
 
         exec(command, function (err, stdout, stderr) {
             if (err) throw err;
 
-            assert.strictEqual(stdout, [
-                "var bar=function(){function foo(bar){return bar}return foo}();",
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbInRlc3QvaW5wdXQvaXNzdWUtMTMyMy9zYW1wbGUuanMiXSwibmFtZXMiOlsiYmFyIiwiZm9vIl0sIm1hcHBpbmdzIjoiQUFBQSxHQUFJQSxLQUFNLFdBQ04sUUFBU0MsS0FBS0QsS0FDVixNQUFPQSxLQUdYLE1BQU9DIn0=",
-                "",
-            ].join("\n"));
+            assert.strictEqual(stdout, "var bar=function(){function foo(bar){return bar}return foo}();\n");
             assert.strictEqual(stderr, "WARN: inline source map not found\n");
             done();
         });
     });
     it("Should fail with multiple input and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js test/input/issue-520/output.js --source-map content=inline,url=inline";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js test/input/issue-520/output.js --in-source-map inline --source-map-inline';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr.split(/\n/)[0], "ERROR: inline source map only works with singular input");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with singular input\n");
             done();
         });
     });
     it("Should fail with acorn and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p acorn";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js --in-source-map inline --source-map-inline --acorn';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with built-in parser\n");
             done();
         });
     });
     it("Should fail with SpiderMonkey and inline source map", function(done) {
-        var command = uglifyjscmd + " test/input/issue-520/input.js --source-map content=inline,url=inline -p spidermonkey";
+        var command = uglifyjscmd + ' test/input/issue-520/input.js --in-source-map inline --source-map-inline --spidermonkey';
 
         exec(command, function (err, stdout, stderr) {
             assert.ok(err);
-            assert.strictEqual(stderr, "ERROR: inline source map only works with built-in parser\n");
+            assert.strictEqual(stderr, "ERROR: Inline source map only works with built-in parser\n");
             done();
         });
     });
@@ -216,7 +208,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/simple.js:1,12");
             assert.strictEqual(lines[1], "function f(a{}");
             assert.strictEqual(lines[2], "            ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token punc «{», expected punc «,»");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token punc «{», expected punc «,»");
             done();
         });
     });
@@ -229,7 +221,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/tab.js:1,12");
             assert.strictEqual(lines[1], "\t\tfoo(\txyz, 0abc);");
             assert.strictEqual(lines[2], "\t\t    \t     ^");
-            assert.strictEqual(lines[3], "ERROR: Invalid syntax: 0abc");
+            assert.strictEqual(lines[3], "SyntaxError: Invalid syntax: 0abc");
             done();
         });
     });
@@ -242,7 +234,7 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/eof.js:2,0");
             assert.strictEqual(lines[1], "foo, bar(");
             assert.strictEqual(lines[2], "         ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token: eof (undefined)");
             done();
         });
     });
@@ -255,268 +247,167 @@ describe("bin/uglifyjs", function () {
             assert.strictEqual(lines[0], "Parse error at test/input/invalid/loop-no-body.js:2,0");
             assert.strictEqual(lines[1], "for (var i = 0; i < 1; i++) ");
             assert.strictEqual(lines[2], "                            ^");
-            assert.strictEqual(lines[3], "ERROR: Unexpected token: eof (undefined)");
+            assert.strictEqual(lines[3], "SyntaxError: Unexpected token: eof (undefined)");
+            done();
+        });
+    });
+    it("Should support hyphen as shorthand", function(done) {
+        var command = uglifyjscmd + ' test/input/issue-1431/sample.js -m keep-fnames=true';
+
+        exec(command, function (err, stdout) {
+            if (err) throw err;
+
+            assert.strictEqual(stdout, "function f(r){return function(){function n(n){return n*n}return r(n)}}function g(n){return n(1)+n(2)}console.log(f(g)()==5);\n");
             done();
         });
     });
     it("Should throw syntax error (5--)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/assign_1.js';
+        var command = uglifyjscmd + ' test/input/invalid/assign_1.js';
 
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/assign_1.js:1,18",
-               "console.log(1 || 5--);",
-               "                  ^",
-               "ERROR: Invalid use of -- operator"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (Math.random() /= 2)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/assign_2.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/assign_2.js:1,32",
-               "console.log(2 || (Math.random() /= 2));",
-               "                                ^",
-               "ERROR: Invalid assignment"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (++this)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/assign_3.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/assign_3.js:1,17",
-               "console.log(3 || ++this);",
-               "                 ^",
-               "ERROR: Invalid use of ++ operator"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (++null)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/assign_4.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/assign_4.js:1,0",
-               "++null",
-               "^",
-               "ERROR: Invalid use of ++ operator"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (a.=)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/dot_1.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/dot_1.js:1,2",
-               "a.=",
-               "  ^",
-               "ERROR: Unexpected token: operator (=)"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (%.a)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/dot_2.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/dot_2.js:1,0",
-               "%.a;",
-               "^",
-               "ERROR: Unexpected token: operator (%)"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (a./();)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/dot_3.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/dot_3.js:1,2",
-               "a./();",
-               "  ^",
-               "ERROR: Unexpected token: operator (/)"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error ({%: 1})", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/object.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/object.js:1,13",
-               "console.log({%: 1});",
-               "             ^",
-               "ERROR: Unexpected token: operator (%)"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (const a)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/const.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/const.js:7,11",
-               "    const a;",
-               "           ^",
-               "ERROR: Missing initializer in const declaration"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (delete x)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/delete.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/delete.js:13,11",
-               "    delete x;",
-               "           ^",
-               "ERROR: Calling delete on expression not allowed in strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (function g(arguments))", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/function_1.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/function_1.js:4,11",
-               "function g(arguments) {",
-               "           ^",
-               "ERROR: Unexpected arguments in strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (function eval())", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/function_2.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/function_2.js:4,9",
-               "function eval() {",
-               "         ^",
-               "ERROR: Unexpected eval in strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (iife arguments())", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/function_3.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/function_3.js:4,10",
-               "!function arguments() {",
-               "          ^",
-               "ERROR: Unexpected arguments in strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (catch(eval))", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/try.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/try.js:7,18",
-               "    try {} catch (eval) {}",
-               "                  ^",
-               "ERROR: Unexpected eval identifier as parameter inside strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should throw syntax error (var eval)", function(done) {
-       var command = uglifyjscmd + ' test/input/invalid/var.js';
-
-       exec(command, function (err, stdout, stderr) {
-           assert.ok(err);
-           assert.strictEqual(stdout, "");
-           assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
-               "Parse error at test/input/invalid/var.js:7,8",
-               "    var eval;",
-               "        ^",
-               "ERROR: Unexpected eval in strict mode"
-           ].join("\n"));
-           done();
-       });
-    });
-    it("Should handle literal string as source map input", function(done) {
-        var command = [
-            uglifyjscmd,
-            "test/input/issue-1236/simple.js",
-            "--source-map",
-            'content="' + read_map() + '",url=inline'
-        ].join(" ");
-
-        exec(command, function (err, stdout) {
-            if (err) throw err;
-
-            assert.strictEqual(stdout, [
-                '"use strict";var foo=function foo(x){return"foo "+x};console.log(foo("bar"));',
-                "//# sourceMappingURL=data:application/json;charset=utf-8;base64,eyJ2ZXJzaW9uIjozLCJzb3VyY2VzIjpbImluZGV4LmpzIl0sIm5hbWVzIjpbImZvbyIsIngiLCJjb25zb2xlIiwibG9nIl0sIm1hcHBpbmdzIjoiWUFBQSxJQUFJQSxLQUFNLFFBQU5BLEtBQU1DLEdBQUEsTUFBSyxPQUFTQSxFQUN4QkMsU0FBUUMsSUFBSUgsSUFBSSJ9",
-                ""
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/assign_1.js:1,18",
+                "console.log(1 || 5--);",
+                "                  ^",
+                "SyntaxError: Invalid use of -- operator"
             ].join("\n"));
             done();
         });
-
-        function read_map() {
-            var map = JSON.parse(read("./test/input/issue-1236/simple.js.map"));
-            delete map.sourcesContent;
-            return JSON.stringify(map).replace(/"/g, '\\"');
-        }
     });
-    it("Should dump AST as JSON", function(done) {
-        var command = uglifyjscmd + " test/input/global_defs/simple.js -mco ast";
-        exec(command, function (err, stdout) {
-            if (err) throw err;
+    it("Should throw syntax error (Math.random() /= 2)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/assign_2.js';
 
-            var ast = JSON.parse(stdout);
-            assert.strictEqual(ast._class, "AST_Toplevel");
-            assert.ok(Array.isArray(ast.body));
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/assign_2.js:1,32",
+                "console.log(2 || (Math.random() /= 2));",
+                "                                ^",
+                "SyntaxError: Invalid assignment"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (++this)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/assign_3.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/assign_3.js:1,17",
+                "console.log(3 || ++this);",
+                "                 ^",
+                "SyntaxError: Invalid use of ++ operator"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (++null)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/assign_4.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/assign_4.js:1,0",
+                "++null",
+                "^",
+                "SyntaxError: Invalid use of ++ operator"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (a.=)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/dot_1.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/dot_1.js:1,2",
+                "a.=",
+                "  ^",
+                "SyntaxError: Unexpected token: operator (=)"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (%.a)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/dot_2.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/dot_2.js:1,0",
+                "%.a;",
+                "^",
+                "SyntaxError: Unexpected token: operator (%)"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (a./();)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/dot_3.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/dot_3.js:1,2",
+                "a./();",
+                "  ^",
+                "SyntaxError: Unexpected token: operator (/)"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error ({%: 1})", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/object.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/object.js:1,13",
+                "console.log({%: 1});",
+                "             ^",
+                "SyntaxError: Unexpected token: operator (%)"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (else)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/else.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/else.js:1,7",
+                "if (0) else 1;",
+                "       ^",
+                "SyntaxError: Unexpected token: keyword (else)"
+            ].join("\n"));
+            done();
+        });
+    });
+    it("Should throw syntax error (return)", function(done) {
+        var command = uglifyjscmd + ' test/input/invalid/return.js';
+
+        exec(command, function (err, stdout, stderr) {
+            assert.ok(err);
+            assert.strictEqual(stdout, "");
+            assert.strictEqual(stderr.split(/\n/).slice(0, 4).join("\n"), [
+                "Parse error at test/input/invalid/return.js:1,0",
+                "return 42;",
+                "^",
+                "SyntaxError: 'return' outside of function"
+            ].join("\n"));
             done();
         });
     });

test/mocha/comment-filter.js

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

test/mocha/comment.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("Comment", function() {
     it("Should recognize eol of single line comments", function() {
@@ -20,7 +20,7 @@ describe("Comment", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.throws(function() {
-                uglify.parse(tests[i]);
+                uglify.parse(tests[i], {fromString: true})
             }, fail, tests[i]);
         }
     });
@@ -31,8 +31,7 @@ describe("Comment", function() {
             "/*Some comment 2\r\n\r\n\r\n*/\r\n>\n\n\n\n\n\n",
             "/*Some comment 3\r\r\r*/\r>\n\n\n\n\n\n",
             "/*Some comment 4\u2028\u2028\u2028*/\u2028>\n\n\n\n\n\n",
-            "/*Some comment 5\u2029\u2029\u2029*/\u2029>\n\n\n\n\n\n",
-            "/*Some comment 6\udbff\udfff\udbff\udfff\n\n\n*/\n>\n\n\n\n\n"
+            "/*Some comment 5\u2029\u2029\u2029*/\u2029>\n\n\n\n\n\n"
         ];
 
         var fail = function(e) {
@@ -44,7 +43,7 @@ describe("Comment", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.throws(function() {
-                uglify.parse(tests[i]);
+                uglify.parse(tests[i], {fromString: true})
             }, fail, tests[i]);
         }
     });

test/mocha/comment_before_constant.js

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

test/mocha/destructuring.js

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

test/mocha/directives.js

@@ -1,5 +1,5 @@
 var assert = require("assert");
-var uglify = require("../node");
+var uglify = require("../../");
 
 describe("Directives", function() {
     it ("Should allow tokenizer to store directives state", function() {
@@ -62,10 +62,10 @@ describe("Directives", function() {
     it("Should know which strings are directive and which ones are not", function() {
         var test_directive = function(tokenizer, test) {
             test.directives.map(function(directive) {
-                assert.strictEqual(tokenizer.has_directive(directive), true, "Didn't found directive `" + directive + "` at the end of `" + test.input + '`');
+                assert.strictEqual(tokenizer.has_directive(directive), true, directive + " in " + test.input);
             });
             test.non_directives.map(function(fake_directive) {
-                assert.strictEqual(tokenizer.has_directive(fake_directive), false, "Unexpectedly found directive `" + fake_directive + "` at the end of `" + test.input + '`');
+                assert.strictEqual(tokenizer.has_directive(fake_directive), false, fake_directive + " in " + test.input);
             });
         }
 
@@ -156,16 +156,6 @@ describe("Directives", function() {
                 input: '"use strict";try{"use asm";',
                 directives: ["use strict"],
                 non_directives: ["use\nstrict", "use \nstrict", "use asm"]
-            },
-            {
-                input: 'class foo {',
-                directives: ["use strict"],
-                non_directives: ["use\nstrict", "use asm"]
-            },
-            {
-                input: 'class foo {}',
-                directives: [],
-                non_directives: ["use strict", "use asm", "use\nstrict"]
             }
         ];
 
@@ -207,7 +197,7 @@ describe("Directives", function() {
         assert.strictEqual(
             uglify.minify(
                 '"use strict";\'use strict\';"use strict";"use strict";;\'use strict\';console.log(\'use strict\');',
-                {output: {beautify: true, quote_style: 3}, compress: false}
+                {fromString: true, output: {beautify: true, quote_style: 3}, compress: false}
             ).code,
             '"use strict";\n\n\'use strict\';\n\n"use strict";\n\n"use strict";\n\n;\'use strict\';\n\nconsole.log(\'use strict\');'
         );
@@ -235,7 +225,7 @@ describe("Directives", function() {
 
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0], {compress: false, mangle: false}).code,
+                uglify.minify(tests[i][0], {fromString: true, quote_style: 3, compress: false, mangle: false}).code,
                 tests[i][1],
                 tests[i][0]
             );
@@ -244,7 +234,7 @@ describe("Directives", function() {
 
     it("Should add double semicolon when relying on automatic semicolon insertion", function() {
         var code = uglify.minify('"use strict";"use\\x20strict";',
-            {output: {semicolons: false}, compress: false}
+            {fromString: true, output: {semicolons: false}, compress: false}
         ).code;
         assert.strictEqual(code, '"use strict";;"use strict"\n');
     });
@@ -350,7 +340,7 @@ describe("Directives", function() {
         ];
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0], {output:{quote_style: tests[i][1]}, compress: false}).code,
+                uglify.minify(tests[i][0], {fromString: true, output:{quote_style: tests[i][1]}, compress: false}).code,
                 tests[i][2],
                 tests[i][0] + " using mode " + tests[i][1]
             );
@@ -361,61 +351,31 @@ describe("Directives", function() {
         var tests = [
             [
                 '"use strict";"use strict";"use strict";"use foo";"use strict";;"use sloppy";doSomething("foo");',
-                '"use strict";"use foo";doSomething("foo");'
+                '"use strict";"use foo";doSomething("foo");',
+                'function f(){ "use strict" }',
+                'function f(){ "use asm" }',
+                'function f(){ "use nondirective" }',
+                'function f(){ ;"use strict" }',
+                'function f(){ "use \n"; }',
             ],
             [
                  // Nothing gets optimised in the compressor because "use asm" is the first statement
                 '"use asm";"use\\x20strict";1+1;',
-                '"use asm";;"use strict";1+1;' // Yet, the parser noticed that "use strict" wasn't a directive
+                '"use asm";;"use strict";1+1;', // Yet, the parser noticed that "use strict" wasn't a directive
+                'function f(){"use strict"}',
+                'function f(){"use asm"}',
+                'function f(){"use nondirective"}',
+                'function f(){}',
+                'function f(){}',
             ]
         ];
 
         for (var i = 0; i < tests.length; i++) {
             assert.strictEqual(
-                uglify.minify(tests[i][0], {compress: {collapse_vars: true, side_effects: true}}).code,
+                uglify.minify(tests[i][0], {fromString: true}).code,
                 tests[i][1],
                 tests[i][0]
             );
         }
     });
-    it("Should be detect implicit usages of strict mode from tree walker", function() {
-        var tests = [
-            {
-                input: 'class foo {bar(){_check_}}',
-                directives: ["use strict"],
-                non_directives: ["use bar"]
-            },
-            {
-                input: 'class foo {bar(){}}_check_',
-                directives: [],
-                non_directives: ["use strict", "use bar"]
-            }
-        ];
-
-        var i = 0;
-        var checked;
-        var checkWalker = new uglify.TreeWalker(function(node, descend) {
-            if (node instanceof uglify.AST_Symbol && node.name === "_check_") {
-                checked = true;
-                for (var j = 0; j < tests[i].directives.length; j++) {
-                    assert.ok(checkWalker.has_directive(tests[i].directives[j]),
-                        "Did not found directive '" + tests[i].directives[j] +  "' in test " + tests[i].input)
-                }
-                for (var k = 0; k < tests[i].non_directives.length; k++) {
-                    assert.equal(checkWalker.has_directive(tests[i].non_directives[k]), undefined,
-                        "Found directive '" + tests[i].non_directives[k] +  "' in test " + tests[i].input)
-                }
-            }
-        });
-
-        for (; i < tests.length; i++) {
-            // Do tests - iterate the ast in each test - check only when _check_ occurs - fail when no _check_ has been found
-            checked = false;
-            var ast = uglify.parse(tests[i].input);
-            ast.walk(checkWalker);
-            if (!checked) {
-                throw "No _check_ symbol found in " + tests[i].input;
-            }
-        }
-    });
 });

test/mocha/eof.js

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

test/mocha/export.js

@@ -1,40 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Export", function() {
-    it ("Should parse export directives", function() {
-
-        var inputs = [
-            ['export * from "a.js"', ['*'], "a.js"],
-            ['export {A} from "a.js"', ['A'], "a.js"],
-            ['export {A as X} from "a.js"', ['X'], "a.js"],
-            ['export {A as Foo, B} from "a.js"', ['Foo', 'B'], "a.js"],
-            ['export {A, B} from "a.js"', ['A', 'B'], "a.js"],
-        ];
-
-        var test = function(code) {
-            return uglify.parse(code);
-        };
-
-        var extractNames = function(symbols) {
-            var ret = [];
-            for (var i = 0; i < symbols.length; i++) {
-                ret.push(symbols[i].name.name)
-            }
-            return ret;
-        };
-
-        for (var i = 0; i < inputs.length; i++) {
-            var ast = test(inputs[i][0]);
-            var names = inputs[i][1];
-            var filename = inputs[i][2];
-            assert(ast instanceof uglify.AST_Toplevel);
-            assert.equal(ast.body.length, 1);
-            var st = ast.body[0];
-            assert(st instanceof uglify.AST_Export);
-            var actualNames = extractNames(st.exported_names);
-            assert.deepEqual(actualNames, names);
-            assert.equal(st.module_name.value, filename)
-        }
-    })
-});

test/mocha/expression.js

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

test/mocha/function.js

@@ -1,252 +0,0 @@
-var assert = require("assert");
-var uglify = require("../node");
-
-describe("Function", function() {
-    it ("Should parse binding patterns correctly", function() {
-        // Function argument nodes are correct
-        function get_args(args) {
-            return args.map(function (arg) {
-                return [arg.TYPE, arg.name];
-            });
-        }
-
-        // Destructurings as arguments
-        var destr_fun1 = uglify.parse('(function ({a, b}) {})').body[0].body;
-        var destr_fun2 = uglify.parse('(function ([a, [b]]) {})').body[0].body;
-        var destr_fun3 = uglify.parse('({a, b}) => null').body[0].body;
-        var destr_fun4 = uglify.parse('([a, [b]]) => null').body[0].body;
-
-        assert.equal(destr_fun1.argnames.length, 1);
-        assert.equal(destr_fun2.argnames.length, 1);
-        assert.equal(destr_fun3.argnames.length, 1);
-        assert.equal(destr_fun4.argnames.length, 1);
-
-        var destruct1 = destr_fun1.argnames[0];
-        var destruct2 = destr_fun2.argnames[0];
-        var destruct3 = destr_fun3.argnames[0];
-        var destruct4 = destr_fun4.argnames[0];
-
-        assert(destruct1 instanceof uglify.AST_Destructuring);
-        assert(destruct2 instanceof uglify.AST_Destructuring);
-        assert(destruct3 instanceof uglify.AST_Destructuring);
-        assert(destruct4 instanceof uglify.AST_Destructuring);
-        assert(destruct2.names[1] instanceof uglify.AST_Destructuring);
-        assert(destruct4.names[1] instanceof uglify.AST_Destructuring);
-
-        assert.equal(destruct1.start.value, '{');
-        assert.equal(destruct1.end.value, '}');
-        assert.equal(destruct2.start.value, '[');
-        assert.equal(destruct2.end.value, ']');
-        assert.equal(destruct3.start.value, '{');
-        assert.equal(destruct3.end.value, '}');
-        assert.equal(destruct4.start.value, '[');
-        assert.equal(destruct4.end.value, ']');
-
-        assert.equal(destruct1.is_array, false);
-        assert.equal(destruct2.is_array, true);
-        assert.equal(destruct3.is_array, false);
-        assert.equal(destruct4.is_array, true);
-
-        // destruct 1
-        assert.deepEqual(
-            [
-                destruct1.names[0].TYPE,
-                destruct1.names[0].key,
-                destruct1.names[0].value.name
-            ],
-            ['ObjectKeyVal', 'a', 'a']
-        );
-        assert.deepEqual(
-            [
-                destruct1.names[1].TYPE,
-                destruct1.names[1].key,
-                destruct1.names[1].value.name
-            ],
-            ['ObjectKeyVal', 'b', 'b']
-        );
-
-        // destruct 2
-        assert.deepEqual(
-            [
-                destruct2.names[0].TYPE,
-                destruct2.names[0].name
-            ],
-            ['SymbolFunarg', 'a']
-        );
-        assert.deepEqual(
-            [
-                destruct2.names[1].names[0].TYPE,
-                destruct2.names[1].names[0].name
-            ],
-            ['SymbolFunarg', 'b']
-        );
-
-        // destruct 3
-        assert.strictEqual(typeof destruct3.names[0].key, "string");
-        assert.strictEqual(destruct3.names[0].key, "a");
-        assert.strictEqual(destruct3.names[0].value.TYPE, "SymbolFunarg");
-        assert.strictEqual(destruct3.names[0].value.name, "a");
-        assert.strictEqual(typeof destruct3.names[1].key, "string");
-        assert.strictEqual(destruct3.names[1].key, "b");
-        assert.strictEqual(destruct3.names[1].value.TYPE, "SymbolFunarg");
-        assert.strictEqual(destruct3.names[1].value.name, "b");
-
-        // destruct 4
-        assert.deepEqual(
-            [
-                destruct4.names[0].TYPE,
-                destruct4.names[0].name
-            ],
-            ['SymbolFunarg', 'a']
-        );
-        assert.strictEqual(destruct4.names[1].TYPE, "Destructuring");
-        assert.deepEqual(
-            [
-                destruct4.names[1].names[0].TYPE,
-                destruct4.names[1].names[0].name
-            ],
-            ['SymbolFunarg', 'b']
-        );
-
-        assert.deepEqual(
-            get_args(destr_fun1.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun2.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun3.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-        assert.deepEqual(
-            get_args(destr_fun4.args_as_names()),
-            [['SymbolFunarg', 'a'], ['SymbolFunarg', 'b']]
-        );
-
-        // Making sure we don't accidentally accept things which
-        // Aren't argument destructurings
-
-        assert.throws(function () {
-            uglify.parse('(function ( { a, [ b ] } ) { })')
-        });
-
-        assert.throws(function () {
-            uglify.parse('(function (1) { })');
-        }, /Invalid function parameter/);
-
-        assert.throws(function () {
-            uglify.parse('(function (this) { })');
-        });
-
-        assert.throws(function () {
-            uglify.parse('(function ([1]) { })');
-        }, /Invalid function parameter/);
-
-        assert.throws(function () {
-            uglify.parse('(function [a] { })');
-        });
-
-        // generators
-        var generators_def = uglify.parse('function* fn() {}').body[0];
-        assert.equal(generators_def.is_generator, true);
-
-        assert.throws(function () {
-            uglify.parse('function* (){ }');
-        });
-
-        var generators_yield_def = uglify.parse('function* fn() {\nyield remote();\}').body[0].body[0];
-        assert.strictEqual(generators_yield_def.body.is_star, false);
-    });
-    it("Should not accept spread on non-last parameters", function() {
-        var tests = [
-            "var a = function(...a, b) { return a.join(b) }",
-            "var b = function(a, b, ...c, d) { return c.join(a + b) + d }",
-            "function foo(...a, b) { return a.join(b) }",
-            "function bar(a, b, ...c, d) { return c.join(a + b) + d }",
-            "var a = function*(...a, b) { return a.join(b) }",
-            "var b = function*(a, b, ...c, d) { return c.join(a + b) + d }",
-            "function* foo(...a, b) { return a.join(b) }",
-            "function* bar(a, b, ...c, d) { return c.join(a + b) + d }"
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Unexpected token: /.test(e.message);
-        }
-
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept empty parameters after elision", function() {
-        var tests = [
-            "(function(,){})()",
-            "(function(a,){})()",
-        ];
-        var test = function(code) {
-            return function() {
-                uglify.parse(code);
-            }
-        }
-        var error = function(e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                e.message === "Invalid function parameter";
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error);
-        }
-    });
-    it("Should not accept an initializer when parameter is a rest parameter", function() {
-        var tests = [
-            "(function(...a = b){})()",
-            "(function(a, ...b = [c, d]))"
-        ];
-        var test = function(code) {
-            return function () {
-                uglify.parse(code);
-            }
-        }
-        var error = function (e) {
-            return e instanceof uglify.JS_Parse_Error;
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-    it("Shoult not accept duplicated identifiers inside parameters in strict mode or when using default assigment or spread", function() {
-        // From: ES2016 9.2.12 FunctionDeclarationInstantiation (func, argumentsList)
-        // NOTE Early errors ensure that duplicate parameter names can only occur
-        // in non-strict functions that do not have parameter default values or
-        // rest parameters.
-        var tests = [
-            "(function(a = 1, a){})()",
-            "(function(a, [a = 3]){})()",
-            "(function(a, b, c, d, [{e: [...a]}]){})()",
-            "'use strict'; (function(a, a){})",
-            "(function({a, a = b}))",
-            "(function(a, [...a]){})",
-            "(function(a, ...a){})",
-            "(function(a, [a, ...b]){})",
-            "(function(a, {b: a, c: [...d]}){})",
-            "(function(a, a, {b: [...c]}){})"
-        ];
-        var test = function(code) {
-            return function () {
-                uglify.parse(code);
-            }
-        }
-        var error = function (e) {
-            return e instanceof uglify.JS_Parse_Error &&
-                /^Parameter [a-zA-Z]+ was used already$/.test(e.message);
-        }
-        for (var i = 0; i < tests.length; i++) {
-            assert.throws(test(tests[i]), error, tests[i]);
-        }
-    });
-});

test/mocha/getter-setter.js

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

test/mocha/glob.js

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

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

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

test/mocha/input-sourcemaps.js

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

test/mocha/let.js

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

test/mocha/lhs-expressions.js

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

test/mocha/line-endings.js

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