UglifyJS

Author	SHA1	Message	Date
Alex Lam S.L	a8aa28a7a6	consolidate single-use `function` reduction (#2427 ) fixes #2423	2017-11-05 04:27:01 +08:00
Alex Lam S.L	fe5a68f9d5	maintain call argument order in `collapse_vars` (#2426 ) fixes #2425	2017-11-05 00:00:18 +08:00
Alex Lam S.L	c8b6f4733d	reduce `this` within functions (#2421 ) - only replace same-scope usages - augment `test/ufuzz.js` to test for `this` fixes #2420	2017-11-04 00:31:37 +08:00
Alex Lam S.L	a48f87abf2	compress `new` `function` containing `this` (#2417 )	2017-10-30 23:19:27 +08:00
Alex Lam S.L	8428326ea1	enhance `properties` (#2412 ) - trim array items only if `side_effects` - extend to non-identifier properties	2017-10-29 04:11:26 +08:00
Alex Lam S.L	31f8209193	remove dead code (#2405 )	2017-10-27 14:28:09 +08:00
Alex Lam S.L	9b0f86f5a1	fix `reduce_vars` on `AST_Array.length` (#2404 )	2017-10-27 02:33:37 +08:00
Alex Lam S.L	ee082ace1b	compress self comparisons (#2398 )	2017-10-26 01:16:12 +08:00
Alex Lam S.L	4178289c38	implement `hoist_props` (#2396 ) fixes #2377	2017-10-25 03:38:11 +08:00
Alex Lam S.L	74ae16f9f8	fix `unsafe` `reduce_vars` on arrays & objects (#2397 )	2017-10-24 22:10:36 +08:00
Alex Lam S.L	86ea38a259	enhance `unsafe` `evaluate` of arrays & objects (#2394 )	2017-10-24 02:58:30 +08:00
Alex Lam S.L	8a713e449f	deduplicate declarations regardless of `toplevel` (#2393 )	2017-10-23 01:00:50 +08:00
Alex Lam S.L	24aa07855b	safer `properties` transform (#2391 ) `{ a: x, b: y }.a` => `[ x, y ][0]` - `x` cannot be function containing `this` `[ x, y, z ][1]` => `(x, z, y)` - only if `z` is side-effect-free	2017-10-22 20:10:13 +08:00
Alex Lam S.L	5fd723f143	fix `unsafe` expansion of object literals (#2390 )	2017-10-22 15:00:36 +08:00
Alex Lam S.L	516eaef50c	fix `unsafe` evaluation of `AST_Sub` (#2389 )	2017-10-22 13:14:15 +08:00
Alex Lam S.L	4ae1fb3ed8	fix `unsafe` evaluation of objects (#2388 )	2017-10-22 04:19:40 +08:00
Alex Lam S.L	011123223b	fix `unsafe` escape analysis in `reduce_vars` (#2387 )	2017-10-22 03:23:31 +08:00
Alex Lam S.L	c927cea632	`unsafe` fix-ups for #2351 (#2379 )	2017-10-21 04:08:26 +08:00
Alex Lam S.L	0f2ef3367c	enhance `collapse_vars` around lazy operations (#2369 )	2017-10-19 04:52:00 +08:00
Alex Lam S.L	7e5b5cac97	fix `AST_PropAccess` in `collapse_vars` (take 3) (#2375 ) Suppress scanning beyond assignment to `a.b`	2017-10-18 02:54:51 +08:00
Alex Lam S.L	c1346e06b7	clean up lazy operator detection (#2373 )	2017-10-17 23:25:45 +08:00
Alex Lam S.L	0d2fe8e3ef	fix `AST_PropAccess` in `collapse_vars` (take 2) (#2372 ) fixes #2364	2017-10-17 22:59:15 +08:00
Alex Lam S.L	f2b9c11e2a	fix `AST_PropAccess` in `collapse_vars` (#2370 ) fixes #2364	2017-10-17 18:33:03 +08:00
Alex Lam S.L	fe647b083e	account for side-effects from `AST_This` in `collapse_vars` (#2365 )	2017-10-17 01:18:55 +08:00
Alex Lam S.L	b810e2f8da	perform `reduce_vars` on safe literals (#2351 ) - constant expression - single reference - same scope - not across loop body	2017-10-09 12:25:06 +08:00
Alex Lam S.L	1abe14296e	collapse `a.b` whenever safe (#2350 )	2017-10-08 13:17:48 +08:00
Alex Lam S.L	dd71639264	enhance `reduce_vars` for `AST_Accessor` (#2339 ) fixes #2336	2017-10-01 03:01:50 +08:00
Alex Lam S.L	2dcc552ce0	trap invalid use of reserved words (#2338 ) fixes #2337	2017-10-01 02:10:41 +08:00
kzc	7e3e9da860	fix "use asm" numeric output (#2328 ) fixes #2324	2017-09-21 04:42:40 +08:00
Alex Lam S.L	00f509405b	suppress `collapse_vars` of `this` into "use strict" (#2326 ) fixes #2319	2017-09-20 05:23:20 +08:00
Alex Lam S.L	4f0953f7e9	handle LHS side-effects on `cascade` & `collapse_vars` (#2314 ) fixes #2313	2017-09-16 11:45:19 +08:00
Alex Lam S.L	182a47bfb1	improve source mapping (#2312 ) fixes #2310	2017-09-15 12:46:48 +08:00
Mateusz Burzyński	8158b1bdcf	Testing all leading comments against being PURE comments (#2305 )	2017-09-10 02:08:15 +08:00
Alex Lam S.L	aacf3edc68	extend `unsafe` on pure global functions (#2303 )	2017-09-07 22:08:34 +08:00
kzc	8b89072190	add `Date` and other known globals to `unsafe` compress option (#2302 )	2017-09-07 02:44:26 +08:00
Alex Lam S.L	395a17ccda	fix `collapse_vars` on default function argument (#2299 ) Avoid collision with local variable `undefined` under certain corner cases. fixes #2298	2017-09-04 02:32:33 +08:00
Alex Lam S.L	3f355866cf	correctly count declarations after `hoist_vars` (#2297 ) fixes #2295	2017-09-03 17:23:31 +08:00
Alex Lam S.L	e5cf7972ea	fix `unused` patching of `AST_For.init` blocks (#2289 ) fixes #2288	2017-08-29 01:10:04 +08:00
Erik Desjardins	16d40915b4	don't escape null characters as \0 when followed by any digit (#2273 ) fixes #2272	2017-08-14 12:30:08 +08:00
Alex Lam S.L	e7c21e87e3	fix `ie8` mangling of top-level `AST_SymbolCatch` (#2263 ) fixes #2254	2017-08-01 02:38:32 +08:00
Alex Lam S.L	a845897758	improve `mangle.properties` (#2261 ) - include dead code when `keep_quoted` - unify `keep_quoted` & `reserved` - make `test/run-tests.js` consistent with `minify()` fixes #2256	2017-07-29 23:02:04 +08:00
Alex Lam S.L	6a5e74b44e	unescape surrogate pairs only (#2246 ) fixes #2242	2017-07-23 12:38:21 +08:00
Alex Lam S.L	b35dfc2599	reject malformed CLI parameters (#2239 ) fixes #2237	2017-07-15 23:50:27 +08:00
Alex Lam S.L	9e1da9235e	ensure `ie8` works with mangled properties (#2238 ) fixes #2234	2017-07-15 22:50:59 +08:00
Alex Lam S.L	a5ffe2c23f	drop `unused` builtin globals under `unsafe` (#2236 ) fixes #2233	2017-07-15 15:16:11 +08:00
Alex Lam S.L	9282e7b0c6	fix `unsafe` `evaluate` of `Object` static methods (#2232 ) fixes #2231	2017-07-14 19:52:01 +08:00
Alex Lam S.L	5229cb2b1b	drop `unused` compound assignments (#2230 ) fixes #2226	2017-07-14 00:39:34 +08:00
Alex Lam S.L	458e3e15f0	enhance `passes` (#2229 ) - remove hardcoded upper limit - continue based on node count reduction - emit verbose statistics fixes #2226	2017-07-13 02:18:59 +08:00
Alex Lam S.L	10a938cb79	enhance source mapping on IIFEs (#2224 ) fixes #2213	2017-07-11 02:34:28 +08:00
Alex Lam S.L	71ee91e716	handle duplicate argument names in `collapse_vars` (#2215 )	2017-07-08 04:42:35 +08:00
Alex Lam S.L	4f70d2e28c	inlining of static methods & constants (#2211 ) - guard by `unsafe` - support `Array`, `Math`, `Number`, `Object` & `String` fixes #2207	2017-07-07 05:35:32 +08:00
Alex Lam S.L	4b6ca5e742	inline property access of object literal (#2209 ) - only if property value is side-effect-free - guard by `unsafe` fixes #2208	2017-07-06 21:51:58 +08:00
Alex Lam S.L	9306da3c58	suppress `collapse_vars` of `this` as call argument (#2204 ) fixes #2203	2017-07-06 01:03:52 +08:00
Alex Lam S.L	1ac25fc032	improve `compress` granularity through `typeofs` (#2201 ) fixes #2198	2017-07-05 19:20:33 +08:00
Alex Lam S.L	5f046c724b	minor clean-ups to `evaluate` (#2197 )	2017-07-03 18:52:39 +08:00
Alex Lam S.L	af0262b7e5	improve parenthesis emission (#2196 ) - eliminate `throw` usages - suppress extraneous parenthesis - `new function() {foo.bar()}.baz` - `for (function() { "foo" in bar; };;);`	2017-07-03 04:17:37 +08:00
Alex Lam S.L	6b3aeff1d8	clean up `TreeWalker.pop()` (#2195 ) Remove superfluous parameter.	2017-07-03 03:23:38 +08:00
Alex Lam S.L	20e4f8277f	refactor `throw` usage within `compress` (#2193 ) Eliminate exceptional constructs from normal control flow.	2017-07-03 02:10:56 +08:00
Alex Lam S.L	8b69a3d18e	drop argument value after `collapse_vars` (#2190 )	2017-07-02 04:28:11 +08:00
Alex Lam S.L	d40950b741	improve `inline` efficiency (#2188 ) ... by teaching `collapse_vars` some new tricks. fixes #2187	2017-07-02 01:05:14 +08:00
Alex Lam S.L	bdeadffbf5	improve usability of name cache under `minify()` (#2176 ) fixes #2174	2017-06-29 12:48:34 +08:00
Alex Lam S.L	f0a99125ee	improve `unsafe_Func` (#2171 ) - minimise disturbance to `compute_char_frequency()` - remove extraneous quotation marks	2017-06-27 23:53:42 +08:00
Alex Lam S.L	1e4de2e6d3	parse `@global_defs` as expressions (#2169 ) - let parser rejects non-conformant input - eliminate need for extraneous parenthesis	2017-06-27 10:31:19 +08:00
Alex Lam S.L	9db4c42380	fix `cascade` & `collapse` on property access of constants (#2158 )	2017-06-24 21:30:06 +08:00
Alex Lam S.L	94e5e00c03	refactor `compute_char_frequency()` (#2152 ) - minimise maintenance when updating AST - maximise code sharing between `master` & `harmony`	2017-06-23 20:05:31 +08:00
Alex Lam S.L	dc6bcaa18e	synchronise `mangle.properties` for `minify()` & `test/compress` (#2151 )	2017-06-23 15:53:13 +08:00
Alex Lam S.L	d58b184835	refactor `Compressor.toplevel` (#2149 )	2017-06-23 13:11:40 +08:00
Alex Lam S.L	b3a57ff019	minimise `reduce_vars` cloning overhead (#2148 )	2017-06-23 06:59:53 +08:00
Alex Lam S.L	3d5bc08185	fix `reduce_vars` on `this` (#2145 ) fixes #2140	2017-06-23 04:44:57 +08:00
Alex Lam S.L	0692435f01	fix for-in loop parsing (#2144 )	2017-06-23 04:14:30 +08:00
Alex Lam S.L	343ea326c2	ensure mangling works if catch reuses a scope variable (#2123 ) fixes #2120	2017-06-20 02:14:05 +08:00
Alex Lam S.L	0a0f4f5591	make defensive copies when `inline` (#2116 ) fixes #2114	2017-06-17 14:32:37 +08:00
Alex Lam S.L	931daa85bf	fix loss of context in `collapse_vars` & `cascade` (#2112 ) fixes #2110	2017-06-16 21:18:43 +08:00
Alex Lam S.L	00e4f7b3c1	in-place `tigten_body()` (#2111 ) By reducing copies of `AST_Node` arrays, we should be able to reduce: - memory pressure - potential bugs caused by multiple references in AST - duplicated executions of `OPT()`	2017-06-16 19:19:54 +08:00
Alex Lam S.L	11e63bc335	correctly determine scope of `AST_This` (#2109 ) fixes #2107	2017-06-16 14:54:46 +08:00
Alex Lam S.L	33405bb24b	enforce `inline` scope restriction (#2106 ) fixes #2105	2017-06-16 03:21:38 +08:00
Alex Lam S.L	b85a358deb	suppress `inline` of `this` (#2103 ) fixes #2101	2017-06-15 12:14:16 +08:00
Alex Lam S.L	3f961bbba0	compute `uses_arguments` correctly in `figure_out_scope()` (#2099 ) fixes #2097	2017-06-15 03:28:26 +08:00
Alex Lam S.L	2bdc8802dd	fix variable accounting in `inline` (#2085 ) fixes #2084	2017-06-13 01:40:14 +08:00
Alex Lam S.L	293c566d6c	marshal `mangle[.properties].reserved` from non-Array values (#2072 )	2017-06-09 04:29:12 +08:00
Alex Lam S.L	9c306406f1	fix iteration over object with inherited properties (#2068 ) fixes #2055	2017-06-08 03:27:03 +08:00
Alex Lam S.L	9db0695b10	fix `cascade` on multi-branch evaluations (#2067 ) Partially reverts #2059 as this has better coverage and performance. fixes #2062	2017-06-07 19:52:01 +08:00
Alex Lam S.L	b9ad53d1ab	fix `inline` handling of `AST_Call.args` (#2059 )	2017-06-06 22:55:25 +08:00
Alex Lam S.L	3493a182b2	implement function inlining (#2053 ) - empty body - single `AST_Return` - single `AST_SimpleStatement` - avoid `/#__PURE__/` Miscellaneous - enhance single-use function substitution fixes #281	2017-06-06 05:49:53 +08:00
Alex Lam S.L	27c5284d3d	workaround webkit parsing error (#2056 ) apply `webkit` to jetstream tests	2017-06-06 04:06:42 +08:00
Alex Lam S.L	540220b91b	fix `AST_Function` scope invariance (#2052 ) improve function name hack in `run_code()`	2017-06-04 19:27:43 +08:00
Alex Lam S.L	1743621889	clean up `lib/parse.js` (#2047 ) - remove unused definitions - replace `array_to_hash()`	2017-06-03 14:00:59 +08:00
Alex Lam S.L	bac14ba881	fix non-identifier getter/setter name (#2041 ) fixes #2040	2017-06-01 18:11:16 +08:00
Alex Lam S.L	ec095ed647	whitelist `unsafe` `evaluate` candidates (#2039 ) - all arguments may accept constant values - return constant value - free of side effects - available & identical across locales and runtime environments	2017-06-01 04:33:05 +08:00
Alex Lam S.L	17e73121fa	enhance `unsafe` `evaluate` (#2037 )	2017-06-01 00:56:28 +08:00
Alex Lam S.L	e9645e017f	introduce `unsafe_Func` (#2033 ) Separate flag for #203 functionality.	2017-05-31 03:38:00 +08:00
Alex Lam S.L	1aa38051fb	better fix for #512 & #2010 (#2019 ) - remove duplicated functionalities - fix similar issue with `else`	2017-05-29 10:51:41 +08:00
Alex Lam S.L	c6c9f4f5a8	implement `--help options` (#2017 )	2017-05-28 18:21:44 +08:00
Alex Lam S.L	7b13159cda	fix `hoist_funs` on block-scoped `function` under "use strict" (#2013 ) Technically not part of ES5, but commonly used code exists in the wild.	2017-05-27 17:44:59 +08:00
Alex Lam S.L	95094b9c22	fix `if_return` on `AST_Defun` (#2010 ) Previous fiix for #1052 perturbs declaration order of functions which leads to incorrect behaviour under "use strict".	2017-05-27 13:41:49 +08:00
Alex Lam S.L	dc33facfcb	fix `dead_code` on block-scoped `function` under "use strict" (#2006 ) Technically not part of ES5, but commonly used code exists in the wild.	2017-05-26 16:08:51 +08:00
Alex Lam S.L	c70fb60384	clean up `lib/scope.js` (#2003 ) fixes #2004	2017-05-26 03:58:35 +08:00
Alex Lam S.L	793d61499b	report timing breakdown (#2000 ) fix corner cases with `sourceMap` fixes #1998	2017-05-25 07:15:55 +08:00
Alex Lam S.L	e667f0acb8	fix source map offset (#1993 ) Account for whitespace insertions. fixes #505 fixes #890	2017-05-23 20:25:48 +08:00
Alex Lam S.L	efdb65913b	improve usability of `global_defs` in `minify()` (#1987 ) Use `@key` to `parse()` string value as `AST_Node`. fixes #1986	2017-05-22 01:38:43 +08:00
Alex Lam S.L	58fae7dc07	enhance `if_return` to handle `return void...` (#1977 ) fixes #512	2017-05-20 15:58:46 +08:00
Alex Lam S.L	eae26756f1	introduce `unsafe_regexp` (#1970 ) fixes #1964	2017-05-19 09:06:29 +08:00
Alex Lam S.L	569c21e952	improve `RegExp` handling (#1959 ) - remove `options.output.unescape_regexps` - preserve original pattern whenever possible fixes #54 fixes #1929	2017-05-17 20:10:50 +08:00
Alex Lam S.L	87c3a2c0ce	remove `space_colon` (#1960 ) Always emit space after colon when `options.output.beautify` is enabled.	2017-05-17 14:07:34 +08:00
Alex Lam S.L	9464d3c20f	fix parsing of property access after new line (#1944 ) Account for comments when detecting property access in `tokenizer`. fixes #1943	2017-05-16 05:40:49 +08:00
Alex Lam S.L	265008c948	improve keyword-related parser errors (#1941 ) fixes #1937	2017-05-15 23:02:55 +08:00
Alex Lam S.L	e005099fb1	fix & improve coverage of `estree` (#1935 ) - fix `estree` conversion of getter/setter - fix non-directive literal in `to_mozilla_ast()` - revamp `test/mozilla-ast.js` - reuse `test/ufuzz.js` for code generation - use `acorn.parse()` for creating `estree` - extend `test/ufuzz.js` for `acorn` workaround - catch variable redefinition - non-trivial literal as directive - adjust options for tolerance Miscellaneous - optional semi-colon when parsing directives fixes #1914 closes #1915	2017-05-15 02:37:53 +08:00
Alex Lam S.L	3ca902258c	fix bugs with getter/setter (#1926 ) - `reduce_vars` - `side_effects` - property access for object - `AST_SymbolAccessor` as key names enhance `test/ufuzz.js` - add object getter & setter - property assignment to setter - avoid infinite recursion in setter - fix & adjust assignment operators - 50% `=` - 25% `+=` - 2.5% each for the rest - avoid "Invalid array length" - fix `console.log()` - bypass getter - curb recursive reference - deprecate `-E`, always report runtime errors	2017-05-14 02:10:34 +08:00
Alex Lam S.L	c391576d52	remove support for `const` (#1910 ) As this is not part of ES5.	2017-05-12 14:57:41 +08:00
Alex Lam S.L	ac73c5d421	avoid `arguments` and `eval` in `reduce_vars` (#1924 ) fixes #1922	2017-05-12 12:34:55 +08:00
Alex Lam S.L	1d407e761e	fix invalid transform on `const` (#1919 ) - preserve (re)assignment to `const` for runtime error - suppress `cascade` on `const`, as runtime behaviour is ill-defined	2017-05-12 04:51:44 +08:00
Alex Lam S.L	a3b2eb75bd	return `Error` from `minify()` (#1880 ) Have `minify()` return `Error` in `result.error` rather than throwing it.	2017-05-08 07:05:19 +08:00
Alex Lam S.L	da295de82b	support dumping AST (#1879 ) Re-order `AST_Binary` properties to make dump more readable. closes #769	2017-05-08 06:23:01 +08:00
Alex Lam S.L	e54748365c	support `minify()` output as AST (#1878 ) - `options.output.ast` (default `false`) - `options.output.code` (default `true`)	2017-05-08 02:11:45 +08:00
Alex Lam S.L	2c7ee956fd	fix `unsafe` on `evaluate` of `reduce_vars` (#1870 ) Determine if variables with non-constant values can escape and be modified. fixes #1865	2017-05-06 23:18:55 +08:00
Alex Lam S.L	ecf3563c45	kill `opera` (#1869 )	2017-05-06 17:42:07 +08:00
Alex Lam S.L	dee5a27516	enhance `collapse_vars` (#1862 ) - extend expression types - `a++` - `a=x;` - extend scan range - `for(init;;);` - `switch(expr){case expr:}` - `a = x; a = a \|\| y;` - terminate upon `debugger;` closes #1821 fixes #27 fixes #315 fixes #1858	2017-05-06 16:15:43 +08:00
Alex Lam S.L	5a25d24b56	rename variables for better readability (#1863 )	2017-05-02 20:47:10 +08:00
kzc	ea9289771b	improve literal return optimization (#1860 )	2017-05-02 00:10:11 +08:00
Alex Lam S.L	2cb55b2ad0	enforce `toplevel` on other compress options (#1855 ) Respect "funcs" and "vars" properly. fixes #1850	2017-04-30 22:52:36 +08:00
Alex Lam S.L	9e62628171	fix `unused` on for-in statements (#1843 ) Only need to avoid `var` within the initialisation block. fixes #1841	2017-04-24 03:14:01 +08:00
Alex Lam S.L	9bf72cf758	improve parser under "use strict" (#1836 ) - `const` without value - `delete` of expression - redefining `arguments` or `eval` extend `test/ufuzz.js` - optionally generate "use strict" - improve handling of test cases with syntax errors - group IIFE generation - generate bare anonymous functions - workaround `console.log()` for `new function()` - generate expressions with `this` fixes #1810	2017-04-23 20:05:22 +08:00
Alex Lam S.L	45ce369480	fix `AST_For.init` patch-up in `drop_unused()` (#1839 ) fixes #1838	2017-04-23 01:51:56 +08:00
Alex Lam S.L	ca32a09032	fix label-related bugs (#1835 ) - deep cloning of `AST_LabeledStatement` - `L:do{...}while(false)` - empty statement with label within block extend `test/ufuzz.js` - generate labels for blocks & loops - generate for-in statements - skip suspicious option search if `minify()` errs fixes #1833	2017-04-22 22:15:04 +08:00
Alex Lam S.L	f05d4f7af3	improve `unused` (#1832 ) - extract leading value with side-effects out of `var` statement - reduce scanning of `AST_Definitions` from 3 passes to just once	2017-04-20 13:06:14 +08:00
Alex Lam S.L	88e7a542cd	fix `unused` on labeled for-loop (#1831 ) fixes #1830	2017-04-20 04:18:38 +08:00
Alex Lam S.L	4dcff038cb	improve `collapse_vars` on `AST_Var` (#1828 ) Perform the same cascaded scanning within `var` statement as we do on array of statements.	2017-04-19 04:49:09 +08:00
Alex Lam S.L	b4b9305db0	fix parser bugs & CLI reporting (#1827 ) fixes #1825	2017-04-19 04:27:13 +08:00
Alex Lam S.L	28cfb65c47	extend `cascade` into `a.b` (#1829 ) fixes #27	2017-04-19 04:17:15 +08:00
Alex Lam S.L	0f4f01b66c	clean up `collapse_vars` (#1826 ) - remove overlap in functionality of singular, consecutive reference of constant value - remove workarounds for previous bugs in `lib/scope.js` - distribute recursive `collapse_single_use_vars()` calls to their respective `OPT(AST_Node)` - enable collapsing of variables within a single `AST_Definitions`	2017-04-18 21:45:34 +08:00
Alex Lam S.L	5d9f1da3ab	support safe reassignments in `reduce_vars` (#1823 ) `var a=1;a=2;x(a)` => `x(2)` fix pre-existing issues - reference counting on assignment - walking of anonymous functions - chained assignment	2017-04-18 13:38:42 +08:00
Alex Lam S.L	d1aa09c5c7	fix `reduce_vars` on conditionals (#1822 )	2017-04-18 01:44:23 +08:00
Alex Lam S.L	6d5f341999	fix `reduce_vars` on boolean binary expressions (#1819 ) Side effects of `&&` and `\|\|` have not mattered until #1814, which takes assignment expressions into account.	2017-04-17 17:24:29 +08:00
Alex Lam S.L	4ffb6fce76	compress duplicated variable definitions (#1817 ) These are surprisingly common, as people reuse the same variable name within loops or switch branches.	2017-04-17 17:11:29 +08:00
Alex Lam S.L	71a8d0d236	fix `reduce_vars` within try-block (#1818 ) Possible partial execution due to exceptions.	2017-04-17 14:03:29 +08:00
Alex Lam S.L	1a498db2d3	enhance `reduce_vars` (#1814 ) - allow immediate assignment after declaration of variable - relax modification rule for immutable value - fix order of visit for TreeWalker - remove extraneous code	2017-04-17 01:36:50 +08:00
Alex Lam S.L	44dfa5a318	fix variable substitution (#1816 ) - let `collapse_vars` take care of value containing any symbols - improve overhead accounting	2017-04-16 17:25:39 +08:00
Alex Lam S.L	ec443e422c	unify CLI & API under `minify()` (#1811 ) - rename `screw_ie8` to `ie8` - rename `mangle.except` to `mangle.reserved` - rename `mangle.properties.ignore_quoted` to `mangle.properties.keep_quoted` - compact `sourceMap` options - more stringent verification on input `options` - toplevel shorthands - `ie8` - `keep_fnames` - `toplevel` - `warnings` - support arrays and unquoted string values on CLI - drop `fromString` from `minify()` - `minify()` no longer handles any `fs` operations - unify order of operations for `mangle_properties()` on CLI & API - `bin/uglifyjs` used to `mangle_properties()` before even `Compressor` - `minify()` used to `mangle_properties()` after `Compressor` but before `mangle_names()` - both will now do `Compressor`, `mangle_names()` then `mangle_properties()` - `options.parse` / `--parse` for parser options beyond `bare_returns` - add `mangle.properties.builtins` to disable built-in reserved list - disable with `--mangle-props builtins` on CLI - `warnings` now off by default - add `--warn` and `--verbose` on CLI - drop `--enclose` - drop `--export-all` - drop `--reserved-file` - use `--mangle reserved` instead - drop `--reserve-domprops` - enabled by default, disable with `--mangle-props domprops` - drop `--prefix` - use `--source-map base` instead - drop `--lint` - remove `bin/extract-props.js` - limit exposure of internal APIs - update documentations closes #96 closes #102 closes #136 closes #166 closes #243 closes #254 closes #261 closes #311 closes #700 closes #748 closes #912 closes #1072 closes #1366 fixes #101 fixes #123 fixes #124 fixes #263 fixes #379 fixes #419 fixes #423 fixes #461 fixes #465 fixes #576 fixes #737 fixes #772 fixes #958 fixes #1036 fixes #1142 fixes #1175 fixes #1220 fixes #1223 fixes #1280 fixes #1359 fixes #1368	2017-04-15 23:50:50 +08:00
Alex Lam S.L	32deb365d5	drop `angular` (#1812 ) Remove support for `@ngInject` as there are proper alternatives anyway.	2017-04-15 05:52:29 +08:00
Alex Lam S.L	2244743545	convert `AST_Seq` from binary tree to array (#1460 ) - rename `AST_Seq` to `AST_Sequence` - raise default sequences_limit from 200 to 800	2017-04-12 21:56:27 +08:00
Alex Lam S.L	d6fbc365e2	fix LHS cases for NaN & friends (#1804 ) `Infinity = beyond` should not become `1/0 = beyond`	2017-04-09 03:18:14 +08:00
Alex Lam S.L	0479ff0c54	fix a couple of bugs in `global_defs` (#1802 ) - `optimize()` substituted expression - compute nested property string correctly fixes #1801 Miscellaneous - reset optimisation flags on all node types	2017-04-08 16:46:25 +08:00
Alex Lam S.L	cf72fe552f	fix `delete` corner cases (#1799 ) - assignment - boolean - conditional - sequence	2017-04-08 14:25:28 +08:00
Alex Lam S.L	c2a1bceb77	fix `pure_getters` for chained property access (#1798 )	2017-04-07 17:06:01 +08:00
Alex Lam S.L	e3c9c22c75	fix corner cases with `delete` (#1796 ) `delete Infinity` returns `false` where as `delete (1/0)` returns `true`	2017-04-07 15:39:59 +08:00
Alex Lam S.L	0f4cd73dcc	introduce "strict" to `pure_getters` (#1795 )	2017-04-07 13:31:58 +08:00
Alex Lam S.L	281e882d27	fix `reduce_vars` on catch variable (#1794 ) Improved catch handling in `figure_out_scope()` means special case treatment of IE8 is no longer valid in `reset_opt_flags()`. Also fixed recursive assignment in variable definition.	2017-04-07 12:32:56 +08:00
Alex Lam S.L	cc6aa3e5ac	fix incorrect context in variable substitution (#1791 ) `AST_Node.optimize()` is context-aware, so don't cache its results to be used elsewhere. Also fixed a few cases of AST corruption and beef up safety of `pure_getters`.	2017-04-07 03:42:17 +08:00
Alex Lam S.L	e869779a98	enable `inline_script` by default (#1793 )	2017-04-07 00:45:51 +08:00
Alex Lam S.L	06cdb74279	improve `pure_getters` (#1786 ) - property access to `null` & `undefined` always has side effects - utilise `reduce_vars` to determine safe property access - may-be cases treated as side effects unless `unsafe`	2017-04-06 11:18:59 +08:00
Alex Lam S.L	ff289b90a9	implement delayed resolution for `reduce_vars` (#1788 ) Although it would be nice to enforce `AST_Node` cloning during transformation, that ship has sailed a long time ago. We now get the assigned value when resolving `AST_SymbolRef` instead of `reset_opt_flags()`, which has the added advantage of improved compressor efficiency. fixes #1787	2017-04-05 21:06:42 +08:00
Alex Lam S.L	9b6bc67c33	optimise `do{...}while(false)` (#1785 ) - better heuristics to avoid issues like #1532 - fix `TreeWalker.loopcontrol_target()` - `continue` cannot refer to `switch` blocks	2017-04-04 23:48:22 +08:00
Alex Lam S.L	951770fc68	exclude mangling of special property names (#1779 ) - `null` - `true` - `false` - numeric literals	2017-04-04 03:50:19 +08:00
Alex Lam S.L	48b3fe9952	fix `mangleProperties` on identifiers (#1776 ) - fix handling of "-Infinity" - add test case for "-0" reverts #1481	2017-04-03 23:17:47 +08:00
Alex Lam S.L	59a4e56bc8	fix mangleProperties of `undefined` & `Infinity` (#1772 ) `NaN` already works by the happy accident of `Number.NaN` fixes #1770	2017-04-03 12:31:05 +08:00
Alex Lam S.L	9469c03ac9	fix corner case in `switch` (#1765 )	2017-04-02 17:07:20 +08:00
Alex Lam S.L	d57527697f	avoid confusion of `NaN` & `Infinity` with `catch` symbol of the same name (#1763 ) fixes #1760 fixes #1761	2017-04-02 16:14:09 +08:00
Alex Lam S.L	f7ca4f2297	fix corner cases in switch and undefined (#1762 ) - fix side effects in switch condition for singular blocks - fix `undefined` confusion with local variable - gate `OPT(AST_Switch)` with `switches` fixes #1758 fixes #1759	2017-04-02 14:52:25 +08:00
Alex Lam S.L	ee3fe0f4cd	fix switch branch elimination (#1752 ) Merge unreachable case body with previous fallthrough case fixes #1750	2017-04-01 17:19:57 +08:00
Alex Lam S.L	257ddc3bdb	improve compression of undefined, NaN & Infinitiy (#1748 ) - migrate transformation logic from `OutputStream` to `Compressor` - always turn `undefined` into `void 0` (unless `unsafe`) - always keep `NaN` except when avoiding local variable redefinition - introduce `keep_infinity` to suppress `1/0` transform, except when avoiding local variable redefinition supersedes #1723 fixes #1730	2017-04-01 03:02:14 +08:00
Alex Lam S.L	1ddc05725d	combine rules for binary boolean operations (#1744 )	2017-03-31 18:47:44 +08:00
Alex Lam S.L	a0c3836ba0	sort options in alphabetical order (#1743 ) They started off as functional groups I guess, but given the sheer number of options this is becoming too difficult to read.	2017-03-31 16:41:04 +08:00
Alex Lam S.L	11e9bdc427	fix missing preamble when shebang is absent (#1742 )	2017-03-31 15:26:57 +08:00
Alex Lam S.L	c595b84032	fix catch symbol mangling (#1734 ) Only need to look up the immediate non-block/catch scope for the same-name special case. fixes #1733	2017-03-31 02:57:47 +08:00
Alex Lam S.L	7cb1adf455	remove paranthesis for `-(x*y)` (#1732 )	2017-03-30 16:09:00 +08:00
Alex Lam S.L	7bea38a05d	optimize try-catch-finally (#1731 ) - eliminate empty blocks - flatten out if try-block does not throw	2017-03-30 12:16:58 +08:00
Alex Lam S.L	beb9659778	speed up IIFE elimination (#1728 ) - `side_effects` will clean up inner statements, so checking for an empty function body should suffice - drop side effects when dropping `return` from statement	2017-03-29 23:27:35 +08:00
Alex Lam S.L	f1a833a7aa	speed up `equivalent_to()` and `AST_Switch` (#1727 )	2017-03-29 22:08:26 +08:00
Alex Lam S.L	2e41cd6394	fix missing parentheses around NaN/Infinity shorthands (#1726 ) fixes #1724 fixes #1725	2017-03-29 20:53:03 +08:00
Alex Lam S.L	09f77c7d4d	output optimal representations of NaN & Infinity (#1723 ) - move these optimisations out from `Compressor` to `OutputStream` - fixes behaviour inconsistency when running uglified code from global or module levels due to redefinition	2017-03-29 18:31:55 +08:00
Alex Lam S.L	fef0bf9ee0	improve beautified output of switch blocks (#1721 )	2017-03-29 04:40:05 +08:00
Alex Lam S.L	eb48a035e7	fix corner case in `unused` (#1718 ) When fixing catch-related issue in #1715, it tries to optimise for duplicate definitions but did not take anonymous functions into account. Remove such optimisation for now and we can cover this as a more general rule later.	2017-03-29 01:00:21 +08:00
Alex Lam S.L	c909ffb715	fix `unused` on var of the same name within catch (#1716 ) fixes #1715	2017-03-28 21:25:49 +08:00
Alex Lam S.L	f71f4905b0	fix `is_number()` on `+=` (#1714 ) fixes #1710	2017-03-28 17:08:16 +08:00
Alex Lam S.L	fb177a6312	drop anonymous function name when overshadowed by other declarations (#1712 ) fixes #1709	2017-03-28 17:02:20 +08:00
Alex Lam S.L	65da9acce6	handle var within catch of the same name (#1711 ) The following code prints `1`: var a = 1; !function(){ a = 4; try{ throw 2; } catch (a) { var a = 3; } }(); console.log(a); fixes #1708	2017-03-28 16:42:39 +08:00
Alex Lam S.L	67d0237f73	fix tail trimming of switch blocks (#1707 ) now guarded under `dead_code` fixes #1705	2017-03-28 03:59:13 +08:00
Alex Lam S.L	984a21704e	fix mangle for variable declared within catch block (#1706 ) fixes #1704	2017-03-28 03:26:35 +08:00
Alex Lam S.L	c526da59a1	`has_side_effects()` should take `AST_Switch.expression` into account (#1699 ) fixes #1698	2017-03-27 18:09:35 +08:00
Alex Lam S.L	581630e0a7	fix typeof side effects (#1696 ) `statement_to_expression()` drops `typeof` even if it operates on undeclared variables. Since we now have `drop_side_effect_free()`, replace and remove this deprecated functionality.	2017-03-27 04:37:42 +08:00
Alex Lam S.L	f5952933a0	preserve side effects in switch expression (#1694 ) fixes #1690	2017-03-27 02:32:46 +08:00
Alex Lam S.L	f001e4cb9d	fix `cascade` on anonymous function reference (#1693 ) Unlike normal variables and even function definitions, these cannot be reassigned, even though assignment expressions would "leak" the assigned value as normal.	2017-03-27 01:58:21 +08:00
Alex Lam S.L	57ce5bd9e0	handle overlapped variable definitions (#1691 ) Process variable definitions with or without assigned values against: - `arguments` - named function arguments - multiple definitions within same scope Essentially demote variable declarations with no value assignments. Also fixed invalid use of `AST_VarDef` over `arguments` - should use a member of `AST_SymbolDeclaration` instead.	2017-03-27 01:30:21 +08:00
Alex Lam S.L	861a79ac9f	fix `delete` related issues in `collapse_vars` and `reduce_vars` (#1689 )	2017-03-26 19:14:30 +08:00
Alex Lam S.L	e76fb354eb	fix `cascade` on `delete` operator (#1687 ) Conditions including strict mode would make `delete` return `true` or `false`, and are too complex to be evaluated by the compressor. Suppress assignment folding into said operator. fixes #1685	2017-03-26 18:08:44 +08:00
Alex Lam S.L	3276740779	fallthrough should not execute case expression (#1683 ) - de-duplicate trailing cases only, avoid all potential side-effects - enable switch statement fuzzing fixes #1680	2017-03-26 16:52:38 +08:00
kzc	5509e51098	optimize conditional when condition symbol matches consequent (#1684 )	2017-03-26 16:36:33 +08:00
Alex Lam S.L	94f84727ce	suppress switch branch de-duplication upon side effects (#1682 ) fixes #1679	2017-03-26 13:32:43 +08:00
Alex Lam S.L	8a4f86528f	fix side-effects detection on switch statements (#1678 ) extension of #1675	2017-03-26 12:05:44 +08:00
Alex Lam S.L	f83d370f57	improve switch optimisations (#1677 ) - correctly determine reachability of (default) branches - gracefully handle multiple default branches - optimise branches with duplicate bodies fixes #376 fixes #441 fixes #1674	2017-03-26 05:15:46 +08:00
Alex Lam S.L	b19aa58cff	fix `has_side_effects()` (#1675 ) `AST_Try` is an `AST_Block`, so besides try block we also need to inspect catch and finally blocks for possible side effects. Also extend this functionality to handle `AST_If` and `AST_LabeledStatement` while we are at it. fixes #1673	2017-03-25 23:03:26 +08:00
Alex Lam S.L	0a65de89b9	fix `reduce_vars` on `AST_Switch` (#1671 ) Take conditional nature of switch branches into account. fixes #1670	2017-03-25 21:17:30 +08:00
Alex Lam S.L	6e86ee950d	fix typeof side-effects (#1669 ) `has_side_effects()` does not take `typeof`'s magical power of not tripping over undeclared variable into account. fixes #1668	2017-03-25 17:40:18 +08:00
Alex Lam S.L	8ca2401ebe	fix `dead_code` on `AST_Switch` (#1667 ) Need to call `extract_declarations_from_unreachable_code()`. fixes #1663	2017-03-25 16:21:42 +08:00
Alex Lam S.L	a30092e20f	fix invalid `AST_For.init` (#1657 ) Turns out the only place in `Compressor` which can generate invalid `AST_For.init` is within `drop_unused()`, so focus the fix-up efforts. supercedes #1652 fixes #1656	2017-03-25 03:18:36 +08:00
Alex Lam S.L	32283a0def	fix cascade of `evaluate` optimisation (#1654 ) Operator has changed, so break out from rest of the rules. fixes #1649	2017-03-24 22:09:19 +08:00
Alex Lam S.L	ac51d4c5a0	fix corner case in `AST_For.init` (#1652 ) Enforce `null` as value for empty initialisation blocks. fixes #1648	2017-03-24 19:31:17 +08:00
Alex Lam S.L	0432a7abb9	fix assignment extraction from conditional (#1651 ) fixes #1645 fixes #1646	2017-03-24 18:52:48 +08:00
Alex Lam S.L	f3a1694a41	fix assignment substitution in sequences (#1643 ) take side effects of binary boolean operations into account fixes #1639	2017-03-24 14:30:31 +08:00
Alex Lam S.L	2e0dc97003	improve error marker placement (#1644 ) For AST_UnaryPrefix, points to the operator rather than end of expression.	2017-03-24 14:28:40 +08:00
kzc	79334dda10	fix regression: CLI options with hyphens like -b ascii-only (#1640 ) fixes #1637	2017-03-24 11:55:03 +08:00
Alex Lam S.L	e918748d88	improve collapsible value detection (#1638 ) - #1634 bars variables with cross-scope references in between to collapse - but if assigned value is side-effect-free, no states can be modified, so it is safe to move	2017-03-24 02:55:32 +08:00
Alex Lam S.L	48ffbef51d	account for cross-scope modifications in `collapse_vars` (#1634 ) mostly done by @kzc fixes #1631	2017-03-23 07:17:34 +08:00
Alex Lam S.L	c0f3feae9f	introduce compressor.info() (#1633 ) report the following only when `options.warnings = "verbose"` - unused elements due to inlining - collpased variables	2017-03-23 06:49:49 +08:00
Alex Lam S.L	4bceb85cbf	throw parse error on invalid assignments (#1627 ) fixes #1626	2017-03-21 14:11:32 +08:00
Alex Lam S.L	96f8befdd7	fix commit `88fb83a` (#1622 ) The following is wrong: `a == (b ? a : c)` => `b` Because: - `b` may not be boolean - `a` might have side effects - `a == a` is not always `true` (think `NaN`) - `a == c` is not always `false`	2017-03-19 11:59:42 +08:00
Alex Lam S.L	cd58635dcc	fix AST_Binary.lift_sequences() (#1621 ) Commit `eab99a1c` fails to account for side effects from compound assignments.	2017-03-19 03:04:22 +08:00
Alex Lam S.L	274331d0ea	transform String.charAt() to index access (#1620 ) Guarded by `unsafe` as `charAt()` can be overridden.	2017-03-19 02:17:15 +08:00
Alex Lam S.L	ac40301813	fix chained evaluation (#1610 ) `reduce_vars` enables substitution of variables but did not clone the value's `AST_Node`. This confuses `collapse_vars` and result in invalid AST and subsequent crash. fixes #1609	2017-03-17 00:26:48 +08:00
Alex Lam S.L	5ae04b3545	make `collapse_vars` consistent with `toplevel` (#1608 ) fixes #1605	2017-03-16 13:22:26 +08:00
Alex Lam S.L	a80b228d8b	fix `hoist_vars` on `reduce_vars` (#1607 ) `hoist_vars` converts variable declarations into plain assignments, which then confuses `reduce_vars` fixes #1606	2017-03-16 12:03:30 +08:00
Alex Lam S.L	cf4bf4ceb1	fix stack issues with `AST_Node.evaluate()` (#1603 ) As patched in #1597, `make_node_from_constant()` makes inconsistent and sometimes incorrect calls to `optimize()` and `transform()`. Fix those issues properly by changing the semantics of `evaluate()` and `make_node_from_constant()`, with the side effect that `evaluate()` no longer eagerly converts constant to `AST_Node`.	2017-03-16 01:02:59 +08:00
Alex Lam S.L	8223b2e0db	fix `AST_Node.optimize()` (#1602 ) Liberal use of `Compressor.transform()` and `AST_Node.optimize()` presents an issue for look-up operations like `TreeWalker.in_boolean_context()` and `TreeWalker.parent()`. This is an incremental fix such that `AST_Node.optimize()` would now contain the correct stack information when called correctly.	2017-03-15 18:44:13 +08:00
Alex Lam S.L	381bd3836e	minor clean-ups (#1600 ) - remove obsolete optimisation in `AST_Binary` after #1477 - improve `TreeWalker.has_directive()` readability and resilience against multiple visits	2017-03-14 13:19:05 +08:00
Alex Lam S.L	e3a3db73ae	temporary fix for boolean bug (#1597 ) fixes #1592	2017-03-11 04:59:55 +08:00
Alex Lam S.L	d9344f30b8	disallow parameter substitution for named IIFEs (#1596 ) Self-referenced function has non-fixed values assigned to its parameters. Let `unused` & `!keep_fnames` do the scanning, then apply `reduce_vars` only to unnamed functions. fixes #1595	2017-03-11 03:34:55 +08:00
Alex Lam S.L	cf45e2f79b	fixup for #1585 (#1589 ) As patched on `harmony`, `statement()` is the only user of `embed_tokens()` with a missing error branch. Updated test case and match up with `harmony` to facilitate future merging.	2017-03-10 10:49:41 +08:00
Alex Lam S.L	9e6b128374	fix catch variable reference in IE8 (#1587 ) `AST_Scope.def_variable()` will overwrite `AST_Symbol.thedef`, so save a copy before calling. fixes #1586	2017-03-10 03:15:21 +08:00
Michael Mior	93cdb194f4	Correctly raise a parse exception with a missing loop body (#1585 )	2017-03-10 03:08:43 +08:00
Alex Lam S.L	b633706ce4	fix & improve function argument compression (#1584 ) - one-use function call => IIFE should take `eval()` & `arguments` into account - if unused parameter cannot be eliminated, replace it with `0` fixes #1583	2017-03-09 19:11:05 +08:00
Alex Lam S.L	7e465d4a01	scan RHS of dropped assignments (#1581 ) - similar case as #1578 but against #1450 instead - fix `this` binding in #1450 as well closes #1580	2017-03-09 05:22:27 +08:00
Alex Lam S.L	711f88dcb4	scan assignment value in drop_unused() (#1578 ) those were not optimised for `unused` before, which made it necessary for `reduce_vars` to have separate steps for `keep_fnames` docs update by @kzc closes #1577	2017-03-08 18:37:32 +08:00
Alex Lam S.L	c7cdcf06a6	fix function name eliminiation (#1576 ) Function expression can be assigned to a variable and be given a name. Ensure function name is the reduced variable before clearing it out. fixes #1573 fixes #1575	2017-03-08 12:39:57 +08:00
Alex Lam S.L	dedbeeff15	plan B for IE8 do-while semi-colon fix (#1572 ) - omitting trailing semi-colon in do-while breaks non-browser parser, e.g. uglify-js 1.x - trailing semi-colon only breaks IE8 if followed by `else` or `while` - always use braces in do-while body to workaround 2nd case with no size loss in compression fixes #1568	2017-03-08 05:07:05 +08:00
Alex Lam S.L	bd6dee52ab	fix return from recursive IIFE (#1570 ) `side-effects` did not account for IIFEs being able to reference itself thus making its return value potentially significant	2017-03-08 03:31:51 +08:00
Alex Lam S.L	8a8a94a596	fix deep cloning of labels (#1565 ) `AST_Label.references` get `.initialize()` to `[]` every time after `.clone()` So walk down the tree to pick up the cloned `AST_LoopControl` pieces and put it back together.	2017-03-07 18:38:27 +08:00
Alex Lam S.L	8153b7bd8a	transform function calls to IIFEs (#1560 ) - expose function body to call sites for potential optimisations - suppress substitution of variable used within `AST_Defun`	2017-03-07 15:37:52 +08:00
Alex Lam S.L	d787d70127	avoid substitution of global variables (#1557 ) - unless `toplevel` is enabled - global `const` works as before	2017-03-07 03:11:03 +08:00
kzc	3ac2421932	collapse_vars: do not replace a constant in loop condition or init (#1562 )	2017-03-07 01:42:33 +08:00
Alex Lam S.L	a9fc9ddc33	suppress semicolons after do/while (#1556 ) - unless both `beautify` & `screw-ie8` are enabled - deprecate workaround for if-do-while-else fixes #186	2017-03-06 17:31:35 +08:00
Alex Lam S.L	067e5a5762	fixup for #1553 (#1555 ) - `++a` is the one that is foldable - transform `a++` into `++a` for better optimisation	2017-03-05 17:15:37 +08:00
Alex Lam S.L	35a849dc48	collapse assignment with adjacent subsequent usage (#1553 ) - consolidate `cascade` optimisations - support ++/-- postfixes - remove redundant optimisation identified in #1460 fixes #368	2017-03-05 14:56:14 +08:00
Alex Lam S.L	b70591be1a	handle variable declaration within catch blocks (#1546 ) accounts for IE8- scoping	2017-03-05 13:13:44 +08:00
Alex Lam S.L	b33e7f88e6	improve `unsafe` on undefined (#1548 ) `unsafe` turns undefined keyword into a variable of the same name if found, but that interferes with other related optimisations. Keep track of such transformations to ensure zero information loss in the process.	2017-03-05 13:09:27 +08:00
Alex Lam S.L	1f0333e9f1	stay safe with constants in IE8- (#1547 ) - `undefined` etc. can be redefined at top-level for IE8-, so disable related optimisations - fixed `--support-ie8` catch mangle bug	2017-03-05 12:51:11 +08:00
Alex Lam S.L	eb98a7f2f3	fix handling of shebang and preamble (#1545 ) fixes #1332	2017-03-05 12:16:02 +08:00
Alex Lam S.L	78d1bb92d4	fix a corner case in #1530 (#1552 )	2017-03-05 12:12:59 +08:00
kzc	ce54c9ccee	disallow collapse_vars constant replacement in for-in statements (#1543 )	2017-03-04 02:39:54 +08:00
Alex Lam S.L	07accd2fbb	process code with implicit return statement (#1522 ) Bookmarklet for instance implicitedly assumes a "completion value" without using `return`. The `expression` option now supports such use cases. Optimisations on IIFEs also enhanced. fixes #354 fixes #543 fixes #625 fixes #628 fixes #640 closes #1293	2017-03-03 18:13:07 +08:00
Alex Lam S.L	18059cc94f	compress numerical expressions (#1513 ) safe operations - `a === b` => `a == b` - `a + -b` => `a - b` - `-a + b` => `b - a` - `a+ +b` => `+b+a` associative operations (bit-wise operations are safe, otherwise `unsafe_math`) - `a + (b + c)` => `(a + b) + c` - `(n + 2) + 3` => `5 + n` - `(2 * n) * 3` => `6 * n` - `(a \| 1) \| (2 \| d)` => `(3 \| a) \| b` fixes #412	2017-03-03 18:04:32 +08:00
Alex Lam S.L	b5e0e8c203	facilitate fix for #1531 (#1542 )	2017-03-03 07:12:24 +08:00
Alex Lam S.L	17b81350d4	fix chained assignment with `unused` (#1540 ) When #1450 optimises `a=b=42`, it stops after the first variable even if both are unused. fixes #1539	2017-03-03 04:45:20 +08:00
kzc	4d63d4f5b3	collapse_vars should not replace constant in for-in init section (#1538 ) fixes #1537	2017-03-03 03:51:15 +08:00
Alex Lam S.L	70d72ad806	properly cover all cases of for-in loop variables (#1536 )	2017-03-03 02:39:57 +08:00
Alex Lam S.L	fe9227a41b	fix reference marking in for-in loops (#1535 ) fixes #1533	2017-03-03 00:56:06 +08:00
Alex Lam S.L	b49e142a26	disable do{...}while(false) optimisation (#1534 ) - fails to handle `break` in body fixes #1532	2017-03-03 00:54:41 +08:00
kzc	ee3b39b909	optimize trivial IIFEs returning constants (#1530 )	2017-03-02 15:11:40 +08:00
Alex Lam S.L	9699ffb1af	trim unused invocation parameters (#1526 )	2017-03-02 11:33:59 +08:00
Alex Lam S.L	fdc9b9413b	minor improvement to string optimisation (#1514 ) - "" + "a" => "a" - "" + a + "b" => a + "b" - "a" + "" => "a" (improving on #45)	2017-03-02 11:31:39 +08:00
Alex Lam S.L	7aa69117e1	fix corner cases in `reduce_vars` (#1524 ) Avoid variable substitution in the following cases: - use of variable before declaration - declaration within conditional code blocks - declaration within loop body fixes #1518 fixes #1525	2017-03-02 00:20:53 +08:00
Alex Lam S.L	c2334baa48	fix crash on missing `props` to `string_template()` (#1523 ) Patched up `make_node()` without `orig`. There may be other cases where `start` could be missing, so make it print "undefined" instead of crashing. fixes #1518	2017-03-01 15:25:26 +08:00
Alex Lam S.L	f5cbe19b75	invert `reduce_vars` tracking flag (#1519 ) Modules like webpack and grunt-contrib-uglify still uses `ast.transform(compressor)` before `Compressor.compress(ast)` was introduced. Workaround this compatibility issue by deactivating `reduce_vars` in such case. Also fix use case with omitted `options` when calling `Compressor()`. fixes #1516	2017-03-01 04:12:10 +08:00
Alex Lam S.L	b34fa11a13	fix `evaluate` on object getter & setter (#1515 )	2017-03-01 02:03:47 +08:00
Alex Lam S.L	4365a51237	temporarily disables `reduce_vars` (#1517 ) ... as we investigate #1516	2017-03-01 00:25:43 +08:00
Alex Lam S.L	858e6c78a4	warn & drop `#__PURE__` iff IIFE is dropped (#1511 ) - consolidate `side-effects` optimisations - improve string `+` optimisation - enhance literal & `conditionals` optimisations	2017-02-28 02:25:44 +08:00
Alex Lam S.L	872270b149	improve error messages (#1506 ) - better inheritance of `Error` sub-classes - mark parse error against source in CLI closes #235 closes #348 closes #524 closes #1356 closes #1405	2017-02-27 03:40:54 +08:00
Alex Lam S.L	13be50a4a9	faster tree transversal (#1462 ) - convert `[].forEach()` to for-loops	2017-02-26 05:58:26 +08:00
Alex Lam S.L	16cd5d57a5	consolidate `evaluate` & `reduce_vars` (#1505 ) - improve marking efficiency - apply smarter `const` replacement to `var` fixes #1501	2017-02-26 00:40:33 +08:00
Ondřej Španěl	852f78491a	Avoid using exports when undefined (#1471 ) Makes direct usage within web browser easier, even if officially unsupported.	2017-02-24 08:51:24 +08:00
Alex Lam S.L	229e42cdee	Merge pull request #1485 from alexlamsl/merge-2.8.0 2.8.0 staging	2017-02-24 07:33:57 +08:00
alexlamsl	4e49302916	enable `collapse_vars` & `reduce_vars` by default - fix corner cases in `const` optimisation - deprecate `/@const/` fixes #1497 closes #1498	2017-02-24 01:46:57 +08:00
kzc	1e51586996	Support marking a call as pure A function call or IIFE with an immediately preceding comment containing `@__PURE__` or `#__PURE__` is deemed to be a side-effect-free pure function call and can potentially be dropped. Depends on `side_effects` option. `[#@]__PURE__` hint will be removed from comment when pure call is dropped. fixes #1261 closes #1448	2017-02-21 14:24:18 +08:00
Ondřej Španěl	d48a3080ac	Fix: AST_Accessor missing start / end tokens fixes #1492 closes #1493	2017-02-21 13:32:16 +08:00
alexlamsl	26fbeece1c	fix `pure_funcs` & improve `side_effects` - only drops side-effect-free arguments - drop side-effect-free parts with discarded value from `AST_Seq` & `AST_SimpleStatement` closes #1494	2017-02-21 13:31:59 +08:00
alexlamsl	8898b8a0fe	clean up `max_line_len` - never exceed specified limit - otherwise warning is shown - enabled only for final output closes #1496	2017-02-21 13:29:58 +08:00
alexlamsl	ec64acd2c8	introduce `unsafe_proto` - `Array.prototype.slice` => `[].slice` closes #1491	2017-02-21 13:29:58 +08:00
alexlamsl	ac0b61ed6e	remove extraneous spaces between ++/+/--/- fixes #1377 closes #1488	2017-02-21 13:29:58 +08:00
alexlamsl	09f9ae2de9	improve `--beautify bracketize` reduce whitespaces from if-else statements fixes #1482 closes #1483	2017-02-21 13:29:58 +08:00
alexlamsl	e275148998	enhance `global_defs` - support arrays, objects & AST_Node - support `"a.b":1` on both cli & API - emit warning if variable is modified - override top-level variables fixes #1416 closes #1198 closes #1469	2017-02-21 13:29:58 +08:00
alexlamsl	974247c8c0	evaluate AST_SymbolRef as parameter fix invalid boolean conversion now exposed in `make_node_from_constant()` closes #1477	2017-02-21 13:29:58 +08:00
alexlamsl	a0f4fd390a	improve reduce_vars and fix a bug - update modified flag between compress() passes - support IIFE arguments - fix corner case with multiple definitions closes #1473	2017-02-21 13:29:58 +08:00
alexlamsl	b8b133d91a	improve keep_fargs & keep_fnames - utilise in_use_ids instead of unreferenced() - drop_unused now up-to-date for subsequent passes closes #1476	2017-02-21 13:29:58 +08:00
kzc	6ffbecb72b	smarter const replacement taking name length into account closes #1459	2017-02-21 13:29:58 +08:00
alexlamsl	f0ff6189be	clean up `negate_iife` - remove extra tree scanning phase for `negate_iife` - `negate_iife` now only deals with the narrowest form, i.e. IIFE sitting directly under `AST_SimpleStatement` - `booleans`, `conditionals` etc. will now take care the rest via more accurate accounting - `a(); void b();` => `a(); b();` fixes #1288 closes #1451	2017-02-21 13:29:58 +08:00
alexlamsl	6b3c49e458	improve string concatenation shuffle associative operations to minimise parentheses and aid other uglification efforts closes #1454	2017-02-21 13:29:57 +08:00
alexlamsl	f584ca8d07	`-c sequences=N` suboptimal at N expression cutoff N = 2: a; b; c; d; was: a, b; c; d; now: a, b; c, d; fixes #1455 closes #1457	2017-02-21 13:29:57 +08:00
alexlamsl	ae4db00991	tweak do-while loops - `do{...}while(false)` => `{...}` - clean up `AST_While` logic closes #1452	2017-02-21 13:29:57 +08:00
alexlamsl	100307ab31	fixes & improvements to [].join() fixes - [a].join() => "" + a - ["a", , "b"].join() => "a,,b" - ["a", null, "b"].join() => "a,,b" - ["a", undefined, "b"].join() => "a,,b" improvements - ["a", "b"].join(null) => "anullb" - ["a", "b"].join(undefined) => "a,b" - [a + "b", c].join("") => a + "b" + c closes #1453	2017-02-21 13:29:57 +08:00
alexlamsl	148047fbbf	drop unused: toplevel, assign-only - assign statement does not count towards variable usage by default - only works with assignments on the same scope level as declaration - can be disabled with `unused` set to "keep_assign" - `toplevel` to drop unused top-level variables and/or functions - `top_retain` to whitelist top-level exceptions closes #1450	2017-02-21 13:29:57 +08:00
kzc	d11dca3cf9	fix stray else in compress with conditionals=false closes #1449	2017-02-21 13:29:57 +08:00
alexlamsl	e5badb9541	enable typeof "undefined" for general use move out of unsafe, guard corner case with screw_id8 instead closes #1446	2017-02-18 19:01:42 +08:00
alexlamsl	fa668a28b4	fix corner case in keep_fnames happens when inner function: - just below top level - not referenced - `unused` is disabled closes #1445	2017-02-18 19:00:54 +08:00
alexlamsl	686a496b1c	remove unused AST_Scope.nesting & AST_SymbolRef.frame they are computed but never used closes #1444	2017-02-18 18:59:40 +08:00
alexlamsl	11676f9d72	fix crash in unsafe replacement of undefined remove extraneous call to AST_SymbolRef.reference() closes #1443	2017-02-18 18:58:23 +08:00
Anthony Van de Gejuchte	dd31d12a91	Improve optimizing `function() { if(c){return foo} bar();}` closes #1437	2017-02-18 18:56:18 +08:00
Anat Dagan	81f1df14d7	in mangle_names there is a check that the variable name is legal and that it is not a reserved word. This should apply to propsmangle as well.	2017-02-10 14:13:47 +02:00
Alex Lam S.L	1eaa211e09	fix mangling collision with keep_fnames (#1431 ) * fix mangling collision with keep_fnames fixes #1423 * pass mangle options to figure_out_scope() bring command-line in line with minify()	2017-01-26 12:18:28 +01:00
Alex Lam S.L	0610c020b1	optimise binary operands with evaluate() (#1427 ) - remove call to evaluate() in is_constant() and let nested optimize() does its job instead - reject RegExp in is_constant() and remove special case logic under collapse_vars - operands to conditionals optimisation are now always evaluate()-ed - throw error in constant_value() instead of returning undefined to catch possible bugs, similar to make_node_from_constant() - optimise binary boolean operators under `evaluate` instead of `conditionals`	2017-01-26 12:16:50 +01:00
Alex Lam S.L	0d7d4918eb	augment evaluate to extract within objects (#1425 ) - gated by `unsafe` - replaces previous optimisation specific to String.length - "123"[0] => 1 - [1, 2, 3][0] => 1 - [1, 2, 3].length => 3 - does not apply to objects with overridden prototype functions	2017-01-26 12:14:18 +01:00
alexlamsl	48284844a4	add missing LHS cases which global_defs should avoid	2017-01-19 21:06:28 +01:00
Martijn Swaagman	98f330658f	Generate source map data from normalized files If using `inSourceMap` this fix will ensure the copying of `sourcesContent` is based on potentially normalized `sources` values (https://github.com/mozilla/source-map/blob/master/lib/source-map-consumer.js#L304-L309). For example `normalize` (https://github.com/mozilla/source-map/blob/master/lib/util.js#L80-L123) will rewrite `./dist/mySource.js` to `dist/mySource.js` in the target `_sources` of the `SourceMapConsumer`. As a result `orig_map.sourceContentFor(source, true);` would return `null` since the orginal `source` was no longer available in the consumer. By using the keys generating from the `SourceMapConsumer.constructor` consistency is ensured.	2016-11-29 20:42:56 +01:00
Ashley (Scirra)	2a9989dd18	Add --mangle-props-debug and fix --mangle-props=unquoted collision Patch by @AshleyScirra Based on: PR #1316 Renamed the CLI debug option to --mangle-props-debug Fixes: #1321 name collision in --mangle-props=unquoted	2016-11-29 20:25:39 +01:00
Anthony Van de Gejuchte	79b98a9fe8	Do not overwrite options.comments + cleanup	2016-11-29 20:24:08 +01:00
Anthony Van de Gejuchte	8d74f34373	Don't filter shebangs when using the 'some' comment filter Also clarify documentation a bit more about using regexp as filter	2016-10-23 21:31:03 +02:00
Jann Horn	266ddd9639	fix uses_arguments handling (broken since `6605d15783`) Using the symbol declaration tracking of UglifyJS doesn't make sense here anyway, `arguments` always comes from something in the current scope. fixes #1299	2016-10-23 21:29:18 +02:00
Richard van Velzen	6389e52305	Remove console.log and add extra test case	2016-10-06 14:11:32 +02:00
Richard van Velzen	e05510f3bc	Add an option to wrap IIFEs in parenthesis For #1307.	2016-10-06 14:11:32 +02:00
kzc	fc9804b909	Fix (typeof side_effect()) in boolean context Fixes #1289 with suggestion by @rvanvelzen	2016-10-06 13:50:11 +02:00
alexlamsl	4761d07e0b	Optimize unmodified variables	2016-10-01 11:36:11 +02:00
Anthony Van de Gejuchte	0111497fc9	Make all comment options in cli available in js api Also removing more code within "loop" while at it.	2016-09-06 17:54:45 +02:00
kzc	25fc02743a	Account for side effects in `string + expr` optimization	2016-09-01 09:24:56 -04:00
kzc	0bd8053524	implement optimization: (x = 2 * x) ---> (x *= 2)	2016-08-30 08:43:02 -04:00
Richard van Velzen	8430123e9d	Fix negate_iife transform to return a correct tree for nested IIFEs Fix for #1256, partially reverts `d854523783`	2016-08-17 11:55:59 +02:00
kzc	d854523783	Fix negate_iife regression #1254	2016-08-17 01:29:34 -04:00
kzc	de619ae5a6	Fix --mangle-props and --mangle-props=unquoted Fixes: #1247 Fix --mangle-props and --name-cache inconsistency. AST_Dot and AST_Sub properties are now mangled by --mangle-props without regard to being used in an assignment statement. Note: if --mangle-props is used then all javascript files used must be uglified with the same mangle options. Fix the ignore_quoted=true mangle option, also known as `--mangle-props=unquoted`. If a given property is quoted anywhere it will not be mangled in any quoted or non-quoted context.	2016-08-14 21:51:25 +02:00
kzc	fb049d3a81	Fix unneeded parens around unary args in new expression.	2016-08-14 21:38:38 +02:00
Anthony Van de Gejuchte	642273c290	Legacy octal integer strict mode fixes	2016-07-21 14:42:16 +02:00
Lauri Pokka	41a9329409	lib/sourcemap.js: Copy sourceContent from old souce-map to the new source-map. Should fix #882	2016-07-17 19:36:15 +02:00
Anthony Van de Gejuchte	7eb52d2837	Keep const in own scope while compressing - Fixes #1205 - Fix provided by @kzc	2016-07-15 13:20:52 +02:00
kzc	eb63fece2f	Fix mangle with option keep_fnames=true for Safari. Fixes: #1202	2016-07-15 13:18:14 +02:00
Anthony Van de Gejuchte	2d8af8947e	Fix error style for regex errors	2016-07-15 13:14:30 +02:00
Anthony Van de Gejuchte	698705a820	Don't convert all strings to directives from moz-ast	2016-07-03 12:36:57 +02:00
kzc	b40d5de69c	Change the default sequences limit to 200 to speed up compress. Has little or no impact on minification size in the majority of cases but can speed up rollup builds significantly. This sequences change also has the beneficial side effect of avoiding "stack size exceeded" errors on very large input files. The user is free to alter the sequences limit if they are so inclined. The previous sequences limit was 2000. 20 is often sufficient.	2016-07-01 09:41:31 +02:00
kzc	b7ef7840f3	Allow sequences maximum length to be user configurable.	2016-07-01 09:41:31 +02:00
Anthony Van de Gejuchte	a97690fc72	Various LineTerminator changes * Escaped newlines should also produce SyntaxError * Fix multiline comment parsing and add tests * Adapt makePredicate to handle \u2028 and \u2029 * Move up nlb check in regex so it's checked before any escape handling * Change error messages to conform ecma standard * Find_eol not recornizing \u2028 and \u2029 as line terminator * Remove \u180e as it is removed in unicode 6.3.0 from the category zs	2016-06-30 22:12:50 +02:00
kzc	02c638209e	Enable --screw-ie8 by default. catch identifier is mangled correctly for ES5 standards-compliant JS engines by default. Unconditionally use the ie8 if/do-while workaround whether or not --screw-ie8 is enabled. To support non-standard ie8 javascript use: uglifyjs --support-ie8	2016-06-30 21:49:48 +02:00
kzc	335b72df03	Fix spidermonkey AST (ESTree) export and import, Array holes Fixes: #1156 #1161 Also add test to exercise Uglify after spidermonkey export/import of itself.	2016-06-30 21:44:12 +02:00
Anthony Van de Gejuchte	3a7d53f3cf	Move OctalEscapeSequence to read_escape_char This should simplify and improve implementation, make it easier to implement template strings, and keep master a bit more in sync with harmony. Previous implementation wasn't broken, though the loop gave me the impression it could read infinite numbers and annoyed me a bit. It was also slightly unnecessary because the lookup involved only 3 characters.	2016-06-30 21:42:15 +02:00
kzc	ace8aaa0f4	Fix conditional expressions of form (x ? -1 : -1) Fixes #1154, #1153	2016-06-21 14:52:13 -04:00
kzc	0c003c92a8	Don't replace undefined, NaN and Infinity within with scope	2016-06-21 10:53:29 +02:00
Anthony Van de Gejuchte	85fbf86d7b	Keep master in sync with harmony * Do not mangle when no mangle is required * Improve use_asm reset while printing code	2016-06-20 18:42:17 +02:00
Shrey Banga	e645ba84cf	Respect quote style in object literals The option added in `fbbaa42ee5` wasn't being respected inside object literals, so quoted property names would still be stripped out with this option. This is mostly a corner-case, but useful when the output is passed to something like the Closure compiler, where quoted property names can be used to prevent mangling.	2016-06-19 21:13:31 +02:00
Anthony Van de Gejuchte	6c99816855	Normalize error messages	2016-06-19 21:08:34 +02:00
Anthony Van de Gejuchte	2149bfb707	Don't mix strings with directives in output * Don't interpret strings with escaped content as directive * Don't interpret strings after empty statement as directive * Adapt output to prevent strings being represent as directive * Introduce UGLIFY_DEBUG to allow internal testing like EXPECT_DIRECTIVE	2016-06-19 20:59:17 +02:00
Anthony Van de Gejuchte	d7971ba0e4	Fix test262 failures related to <, <=, in and instanceof Fixed-by: @kzc	2016-06-15 23:11:08 +02:00
Anthony Van de Gejuchte	5c4cfaa0a7	Re-add parens after new expression in beautify mode	2016-06-12 20:03:48 +02:00
Anthony Van de Gejuchte	bb9c9707aa	Don't allow with statements in strict mode	2016-06-12 19:08:16 +02:00
Anthony Van de Gejuchte	6c8e001fee	Stop dropping args in new expressions	2016-06-12 17:17:17 +02:00
David Bau	f99b7b630d	Escape null characters as \0 unless followed by 0-7.	2016-06-12 14:32:32 +02:00
Anthony Van de Gejuchte	ea31da2455	Don't drop unused if scope uses with statement Fix provided by @kzc	2016-06-12 14:30:28 +02:00
Anthony Van de Gejuchte	4d7746baf3	Throw errors in strict mode for octal strings Adds a directive tracker for the parser/tokenizer to allow parsing depending on directive context.	2016-06-12 14:27:08 +02:00
Anthony Van de Gejuchte	8287ef6781	Fix uglify attempting to rewrite invalid new expressions	2016-06-08 19:45:21 +02:00
Anthony Van de Gejuchte	00ad57e393	Do not allow newlines in regex	2016-06-05 17:02:19 +02:00
kzc	09d5707a8a	collapse_vars: Do not consider RegExp literals to be constants Fixes #1100	2016-05-27 00:03:51 -04:00
kzc	1e390269d4	Optimize if_return for single if/return cases. Fixes #1089	2016-05-24 17:54:08 +02:00
Richard van Velzen	bc49dfd27a	Completely allow evaluating -0	2016-05-24 17:50:29 +02:00
Richard van Velzen	27eedbc302	Never produce -0 when evaluating expressions (like -"") Fix for #1085. The major case was already there, but more expressions can result in -0.	2016-05-17 22:34:38 +02:00
kzc	5f464b41e2	Simplify iife `new` fix as suggested by @rvanvelzen. Added a test for IIFEs in nested contexts.	2016-05-15 19:12:17 -04:00
kzc	bcc1318d4b	Do not apply negate_iife optimization to `new` expression	2016-05-09 03:19:28 -04:00
kzc	a0e03c9df4	Retain comments before AST_Constants during mangle.	2016-05-04 20:11:45 +02:00
kzc	f39fd3d583	Handle CR line endings in comments. Fixes #1050	2016-05-04 20:02:29 +02:00
Richard van Velzen	4fe630431c	Hoist functions when reversing if (x) return; ... vs. if (!x) ... Fixes #1052	2016-04-23 23:48:33 +02:00
kzc	c55dd5ed74	Add `passes` compress option. Fix duplicate compress warnings.	2016-04-19 20:05:33 +02:00
kzc	e4fa4b109a	Parse comments without recursion to avoid RangeError. Fixes #993	2016-04-16 02:02:47 -04:00
Richard van Velzen	4b4528ee05	Prevent endless recursion when evaluating self-referencing consts Fix #1041	2016-04-13 15:03:31 +02:00
Mihai Bazon	b5a7a231f7	Actually limit sequence length. Fix #1038	2016-04-12 14:17:24 +03:00
kzc	3907a5e3b2	Fix warnings for referenced non-hoisted functions. Fixes #1034 Also added `expect_warnings` functionality to test framework.	2016-04-11 18:15:20 +02:00
kzc	c70d176f35	Simplify member(name, array) implementation.	2016-04-07 09:57:30 -04:00
Mihai Bazon	9317237372	Avoid using inherited hasOwnProperty Fix #1031	2016-04-07 13:16:22 +03:00
kzc	98434258d0	Optimize ternaries with boolean consequent or alternative. Fixes #511	2016-04-02 17:22:12 +02:00
kzc	45ddb9caeb	Speedup `unused` compress option for already minified code Fixes: #321 #917 #1022	2016-03-28 17:58:50 -04:00
Mihai Bazon	f68de86a17	Merge pull request #1011 from kzc/dont-produce-let-in-mangle Do not produce `let` as a variable name in mangle.	2016-03-24 18:16:26 +02:00
kzc	07bb7262d0	Escape all ASCII control characters within strings when using ascii_only. Fixes #1017. Tab characters within strings are now output as `\t` in all output modes.	2016-03-24 11:51:54 -04:00
kzc	a9d4a6291b	Do not produce `let` as a variable name in mangle. Would previously occur in large generated functions with 21,000+ variables. Fixes #986.	2016-03-15 11:20:32 -04:00
philippsimon	ee6c9fabb7	Fix: Uglified Number.prototype functions on big numbers	2016-03-14 12:41:06 +01:00
kzc	102d1b9137	#877 Ignore mangle sort option	2016-02-27 15:33:10 -05:00
kzc	11b0efdf84	boolean_expression ? true : false --> boolean_expression	2016-02-22 17:59:36 +01:00
kzc	5486b68850	Take operator \|\| precendence into account for AST_If optimization. Fixes #979.	2016-02-21 12:05:02 -05:00
alexlamsl	6547437725	preserve ThisBinding for side_effects	2016-02-17 19:34:01 +01:00
Richard van Velzen	9662228f6a	Don't compress (0, eval)() to eval()	2016-02-16 19:00:48 +01:00
alexlamsl	31a9b05c96	Preserve ThisBinding in conditionals & collapse_vars Fixes #973	2016-02-16 18:47:49 +01:00
sergeyv	7a4ed9d200	Revert "using the original sourcemap as the base" This reverts commit `ad18689d92`. Reason for revert: introduce issue #882 Currently, generated sourcemap contains copy of all existing mappings and adds new mappings from uglified code to original one. However, previous mapping are no longer valid and shouldn't be added.	2016-02-10 10:19:39 +01:00
kzc	7c3fee9e31	collapse_vars: avoid replacement across AST_Case nodes to be on safe side even though no issues seen.	2016-01-29 10:35:07 -05:00
kzc	929de2b0de	collapse_vars: fix if/else and ternary operator side effects	2016-01-28 12:17:06 -05:00
kzc	af2472d85e	collapse_vars: fix bug in repeated var defs of same name	2016-01-28 16:48:50 +01:00
kzc	0a38a688f9	fix bug in collapse_vars for right side of "\|\|" and "&&"	2016-01-27 14:18:46 -05:00
kzc	f4c2ea37bf	Collapse single use var definitions Fix #721	2016-01-27 11:48:15 +02:00
Mihai Bazon	915f907186	Add start/end in the `arguments` definition (keeps my https://github.com/mishoo/jsinfo.el working)	2016-01-27 11:36:03 +02:00
Richard van Velzen	b5a7197ae5	Merge pull request #928 from STRML/constPragma Mark vars with /** @const */ pragma as consts so they can be eliminated.	2016-01-20 19:04:36 +01:00
Samuel Reed	1b703349cf	Tighten up @const regex.	2016-01-20 11:35:45 -06:00
Samuel Reed	4a7179ff91	Simplify by skipping extra tree walk.	2016-01-20 11:03:41 -06:00
Samuel Reed	f97da4294a	Use TreeWalker for more accurate @const results and update tests	2016-01-20 10:54:00 -06:00
Samuel Reed	8b71c6559b	Mark vars with /** @const */ pragma as consts so they can be eliminated. Fixes older browser support for consts and allows more flexibility in dead code removal.	2016-01-19 13:23:02 -06:00
Anthony Van de Gejuchte	26641f3fb2	Allow operator names as getters/setters Fixes #919 Fix provided by @kzc	2016-01-19 19:28:51 +01:00
Anthony Van de Gejuchte	70e5b6f15b	Add some tests for comment-filters through api Also never bother comment options to filter comment5/shebang comments as they have their custom filter.	2016-01-19 19:14:19 +01:00
Anthony Van de Gejuchte	6605d15783	Never mangle arguments and keep them in their scope Fixes #892 Helped-by: kzc	2016-01-14 19:45:52 +01:00
Richard van Velzen	ac8db977b9	Merge pull request #905 from avdg/unit-tests Add unit tests	2016-01-14 08:54:40 +01:00
Mihai Bazon	fe4e9f9d97	Fix hoisting the var in ForIn Close #913	2016-01-05 13:56:52 +02:00
Anthony Van de Gejuchte	6f3e35bb3f	Fix ch that could contain other newline characters	2015-12-27 22:24:37 +01:00
Anthony Van de Gejuchte	174404c0f3	Do not allow newlines in string literals	2015-12-26 15:08:37 +01:00
Richard van Velzen	60c4030a4d	Merge pull request #874 from kzc/fix-conditionals #873 Fix `conditionals` optimizations with default compress options	2015-12-26 14:28:33 +01:00
Anthony Van de Gejuchte	bd99b00413	Semicolon after do...while statement is optional	2015-12-17 23:02:35 +01:00
kzc	774bda13cd	#873 Fix `conditionals` optimizations with default compress options	2015-11-24 13:27:50 -05:00
Mihai Bazon	7f48d5b33c	Fix endless loop Close #866	2015-11-16 12:08:24 +02:00
Mihai Bazon	b6968b6bd2	Limit max iterations for tighten_body Ref #866	2015-11-16 12:08:24 +02:00
Mihai Bazon	08623aa6a7	Fix output for "use asm" code from SpiderMonkey AST (will only work properly if the SM tree contains "raw" properties for Literal number nodes)	2015-11-12 12:18:25 +02:00
Mihai Bazon	c898a26117	Build label def/refs info when figuring out scope Fix #862	2015-11-12 11:48:06 +02:00
Mihai Bazon	7691bebea5	Rework has_directive It's now available during tree walking, i.e. walker.has_directive("use asm"), rather than as part of the scope. It's thus no longer necessary to call `figure_out_scope` before codegen. Added special bits in the code generator to overcome the fact that it doesn't inherit from TreeWalker. Fix #861	2015-11-11 22:15:25 +02:00
Mihai Bazon	3c4346728e	Merge pull request #854 from kzc/moz-regexp-2 Have mozilla AST RegExpLiteral parser use regex.pattern and regex.flags	2015-11-10 10:12:30 +02:00
Mihai Bazon	18d37ac761	Fix parsing invalid input i.e. `x = 1.xe` — because parseFloat("1.xe") returns 1, this parsed as `x = 1`. Ref #857	2015-11-09 13:15:20 +02:00
Richard van Velzen	63d35f8f6d	Prevent ReDoS by not using a regexp to verify floating point numbers `parseFloat` will return `NaN` for invalid numbers anyway, which is the check used to throw the parse error. Fixes #857	2015-11-09 11:28:27 +01:00
kzc	7dbe961b2d	simplify mozilla AST RegExpLiteral token parse and handle corner cases of regex.pattern better	2015-11-02 13:10:37 -05:00
kzc	94c4daaf9e	Have mozilla AST RegExpLiteral parser use regex.pattern and regex.flags rather than non-standard `raw` property.	2015-11-02 12:24:09 -05:00
kzc	37ee9de902	rename To_Moz_Literal to To_Moz_RegExp	2015-11-01 10:20:42 -05:00
kzc	83db98ad3b	Fixed RegExp literal in mozilla AST generation/output and added a --dump-spidermonkey-ast flag	2015-11-01 01:02:52 -04:00
kzc	bd0ae6569f	`return undefined` optimization no longer uses `return_void_0` option	2015-10-29 08:19:12 +01:00
kzc	7491d07666	optimize `return undefined` and `return void 0`	2015-10-29 08:19:12 +01:00
Richard van Velzen	335e349314	Allow specification beautify options in tests Caught an error in #847 as well - `output` wasn't passed anywhere which led to an exception. `options` was available though.	2015-10-28 20:50:01 +01:00
Michael Ficarra	a887cde9f2	fixes #845 : \v escaping should be restricted to "screw_ie8" mode	2015-10-27 09:05:21 -07:00
Fábio Santos	b5623b19d4	Fix #836	2015-10-20 19:48:56 +01:00
startswithaj	6b2861e086	Make_string was missing \v and wasnt reversing vertical tabs even though read_escaped_char coverts them	2015-10-15 17:42:16 +10:00
kzc	dff54a6552	Fix other operator output related to <!-- or -->	2015-10-13 01:17:10 -04:00
Mihai Bazon	17eef5a3c2	Only encode <!-- and --> in strings when inline_script	2015-10-12 10:21:22 +03:00
kzc	9f1f21b810	Output `-- >` instead of `-->` in expressions. Escape `<!--` and `-->` within string literals.	2015-10-12 10:19:17 +03:00
kzc	4d2f7d83af	Fix handling of "use asm" when no command line flags are passed to uglifyjs. SCOPE_IS_NEEDED is unconditionally true now. Refactored floating point literal parsing to be more in keeping with the AST class design.	2015-10-07 13:10:53 -04:00
kzc	593677d2ff	Add proper support for "use asm"; blocks. Disable -c optimization within "use asm"; sections and preserve floating point literals in their original form. Non-asm.js sections are optimized as before. Asm.js sections can still be mangled and minified of whitespace. No special command line flags are required.	2015-10-07 10:00:28 +02:00
Anthony Van de Gejuchte	c69294c449	Implement shebang support	2015-10-06 22:35:45 +02:00
Mihai Bazon	6637c267a5	Fix mozilla-ast after module loading changes Need to explicitly qualify stuff now, since it's not evaluated in some global scope. Ref #636	2015-09-24 18:13:21 +03:00
Mihai Bazon	99233c44cc	No longer use `vm` to load code. Improves performance 2x on node > 0.10. Ref #636	2015-09-24 17:58:51 +03:00
Mihai Bazon	33528002b4	Fix wrap_commonjs to include code first (code could have directives, i.e. "use strict")	2015-09-24 17:58:51 +03:00
Ville Lautanala	5fd12451f9	Control keeping function arguments with a single option	2015-09-14 19:38:45 +02:00
Richard van Velzen	fcde6109b0	Fix bad parsing of `new new x()()` constructs Fixes #739	2015-08-27 12:29:36 +03:00
Richard van Velzen	e3bd223dac	Don't change sequences that influence lexical binding in calls Fixes #782	2015-08-25 10:53:35 +02:00
Christopher Chedeau	3ff0b9e0c9	[Fix] --define replaces SymbolRefs in LHS of assignments See #208 for context	2015-08-10 11:22:36 -07:00
Richard van Velzen	759b3f7d6d	Fix mangling of property names which overwrite unmangleable properties Fixes #747.	2015-08-05 21:18:39 +02:00
Richard van Velzen	66761d7ecf	Fix semicolon printing when restricting max line length Fixes #755	2015-07-30 16:13:32 +02:00
Chris Cowan	9854deb626	Re-use the caught exception's error message in the parse error call.	2015-07-29 15:06:52 +02:00
Chris Cowan	d6814050dd	Give a good error message if an invalid regular expression is found.	2015-07-29 15:05:59 +02:00
thorn0	252fc65558	Advanced way to specify if a function call might have side effects. #400	2015-07-29 14:36:42 +02:00
Mihai Bazon	905b601178	Don't attempt to negate non-boolean AST_Binary Fix #751	2015-07-22 16:55:55 +03:00
Mihai Bazon	63fb2d5a44	Merge pull request #735 from kzc/master optimizations for && and \|\| where left side is constant expression	2015-07-20 09:58:01 +03:00
Mihai Bazon	85a5fc0aeb	Don't drop parens in a * (b * c). Close #744	2015-06-30 10:10:29 +03:00
kzc	f47b2b52a5	operator && and \|\| optimization: add "else" before "if" as intended	2015-06-14 17:44:26 -04:00
kzc	fedb6191a1	optimizations for && and \|\| where left side is constant expression	2015-06-11 23:22:38 -04:00
Joao Carlos	0ac6918a41	Add --mangle-regex option	2015-06-09 14:16:50 +03:00
Mihai Bazon	bce4307e9e	Treat \uFEFF as whitespace. Fix #714	2015-05-20 16:17:46 +03:00
Mihai Bazon	a5b60217ce	Fix compressing conditionals Only transform foo() ? EXP(x) : EXP(y) into EXP(foo() ? x : y) if EXP has no side effects. Fix #710	2015-05-18 13:56:04 +03:00
Mihai Bazon	44fd6694eb	fix again reserved props	2015-05-13 22:03:00 +03:00
Mihai Bazon	e48db3a8b6	Make reserved names take priority over the name cache	2015-05-07 15:01:16 +03:00
Mihai Bazon	e637bdaf4e	Only drop the BOM when it's the first character. Close #704	2015-05-05 10:11:38 +03:00
Mihai Bazon	4aed0830e5	Fix blank lines in the output. The issue was more obvious when max_line_len has a small value, rather than the default 32K characters. A blank line showed up after most statements.	2015-05-04 17:55:42 +03:00
Mihai Bazon	c3a10c135e	Avoid spurious brackets when dropping unused vars Fix #702	2015-05-04 14:49:17 +03:00
Mihai Bazon	92e4340732	Fix parsing strings with literal DOS newlines (should not set newline_before) Fix #693	2015-04-23 12:08:19 +03:00
Mihai Bazon	7b22f2031f	If name_cache is specified, do rename cached properties (even if --mangle-props is not there)	2015-04-22 17:34:49 +03:00
Mihai Bazon	274e1b3dc7	Drop NaN -> 0/0 transformation. Fix #687	2015-04-17 11:26:36 +03:00
Mihai Bazon	18c63ff3d8	Fix compression of conditionals Don't move the condition on the right side of an assignment when the left side may have side effects. Fix #677	2015-04-13 17:29:48 +03:00
Mihai Bazon	e04ef56243	Use the `before` visitor in mangle props (works around a bug in our tree walker which, while cloning nodes, breaks references between labeled statements and break/continue labels)	2015-04-10 11:33:29 +03:00
Mihai Bazon	a79ff060d0	Merge branch 'propmangle'	2015-03-29 12:50:43 +03:00
Mihai Bazon	276b9a31cd	Fix compressing `![foo()];` as a statement need to check whether the literal has any side effects before replacing that with `false`.	2015-03-23 23:27:00 +02:00
Mihai Bazon	5801fa39e9	[sequencesize] Actually even better: do create the sequence even if the stat list is bigger than 2000 statements, but limit the sequence itself to 2000 expressions. Ref #414	2015-03-22 13:02:45 +02:00
Mihai Bazon	f0ab1b02e6	Avoid sequencesize for more than 2000 statements. It hardly saves any bytes for a sequence so long, and it risks blowing the stack with the recursive Seq functions. Ref #414	2015-03-22 12:51:15 +02:00
Mihai Bazon	36c28e02fd	Add start/end nodes for NaN/Infinity transformations	2015-03-22 12:50:36 +02:00
Mihai Bazon	ecfd881ac6	Keep unused function arguments by default Discarding unused function arguments affects function.length, which can lead to some hard to debug issues. This optimization is now done only in "unsafe mode". Fix #121	2015-03-20 10:28:51 +02:00
Mihai Bazon	80d1c8206b	Fix parsing for U+2028 / U+2029 (they should be treated as whitespace)	2015-03-18 10:11:37 +02:00
Mihai Bazon	d36faffeca	Fix parsing for U+2028 / U+2029 (they should be treated as whitespace)	2015-03-18 10:09:30 +02:00
Mihai Bazon	aa45f6586e	rename --prop-cache to --name-cache ... and support storing there variable names as well, to help with multiple invocations when mangling toplevel.	2015-03-16 13:16:30 +02:00
Mihai Bazon	0c80d21e01	Fix prop mangling Even if not “defined”, do mangle if name exists in the cache.	2015-03-16 10:53:31 +02:00
Mihai Bazon	ea3430102c	Add property name mangler We only touch properties that are present in an object literal, or which are assigned to. Example: x = { foo: 1 }; x.bar = 2; x["baz"] = 3; x[cond ? "qwe" : "asd"] = 4; console.log(x.stuff); The names "foo", "bar", "baz", "qwe" and "asd" will be mangled, and the resulting mangled names will be used for the same properties throughout the code. The "stuff" will not be, since it's just referenced but never assigned to. This will break most of the code out there, but could work on carefully written code: do not use eval, do not define methods or properties by walking an array of names, etc. Also, a comprehensive list of exclusions needs to be passed, to avoid mangling properties that are standard in JavaScript, DOM, used in external libraries etc.	2015-03-14 11:22:28 +02:00
Edward Casbon	ae07714927	Add filename to the JS_Parse_Error exception. It would be nice to have access to the filename of the file that includes the code that causes a JavaScript error. This is especially handy if uglifying multiple files at once. Only a small change is needed for this to happen as it's already available in the function that throws the error.	2015-02-11 23:21:22 +01:00
Richard van Velzen	992b6b9fcc	Fix invalid removal of left side in && and \|\| compression See #637. This does not produce the optimal result, but it does prevent the removal of non-side-effect-free code.	2015-02-11 21:08:41 +01:00
Richard van Velzen	605362f89d	Drop all `console` statements properly Because the base reference can be an member expression as well, we have to dig a bit deeper to find the leftmost base reference. Fixes #451	2015-01-31 13:24:44 +01:00
Mihai Bazon	fbbaa42ee5	Add option to preserve/enforce string quote style `-q 0` (default) use single or double quotes such as to minimize the number of bytes (prefers double quotes when both will do); this is the previous behavior. `-q 1` -- always use single quotes `-q 2` -- always use double quotes `-q 3` or just `-q` -- always use the original quotes. Related codegen option: `quote_style`. Close #495 Close #460 Some `yargs` guru please tell me why `uglifyjs --help` doesn't display the help string for `-q` / `--quotes`, and why it doesn't output the expected argument types anymore, like good old `optimist` did.	2015-01-27 22:26:27 +02:00
Anthony Van de Gejuchte	099992ecae	Keep single line comments after nlb, after nlb Fixes #583	2015-01-26 12:11:52 +01:00
Bryce Cronkite-Ratcliff	5c02d65ddb	fixes issue #621 SourceMap toString JSON format The correct format of a sourcemap is acquired from a mozilla source map generator by calling toJSON on this object. This patch alters the toString function on mozilla generators to print the format that is to spec instead of the generator's internal representation of itself.	2015-01-24 00:33:02 -08:00
Mihai Bazon	d36067cd35	Merge pull request #615 from avdg/unicode Give parser more unicode support	2015-01-20 13:00:31 +02:00
Anthony Van de Gejuchte	74cda80d3b	Add unicode digit parsing support	2015-01-20 00:17:24 +01:00
Anthony Van de Gejuchte	9a3a848cc8	Update unicode letter	2015-01-20 00:17:03 +01:00
Tal Ater	a1a4c2ada7	Optimize conditionals where the consequent and alternative are both booleans and not equivalent	2015-01-13 18:27:21 +01:00
Richard van Velzen	42ecd42ac0	Replace the correct node when replacing in `void` sequences Close #611.	2015-01-12 17:09:34 +01:00
Mihai Bazon	a10f6a96d7	Merge pull request #482 from arty-name/inline-ng-inject added @ngInject support for inline functions	2015-01-11 12:10:42 +02:00
Mihai Bazon	61c233a08e	Fix make_node_from_constant for Regexp-s Close #588	2015-01-07 11:20:04 +02:00
Mihai Bazon	d2d716483a	aborts(AST_If) returns the `if` node Previously it returned the abort node from the alternative branch. This is not much use as it can be different from the one in the body branch (i.e. return vs. throw) and can trick us into issues like #591. Fix #591	2015-01-06 14:01:35 +02:00
Ingvar Stepanyan	f16033aafd	Location fix for Mozilla AST start token.	2015-01-06 11:32:41 +01:00
Ingvar Stepanyan	ae5366a31d	Track ending lines/columns; fix end locations in Mozilla AST.	2015-01-06 11:32:41 +01:00
Mihai Bazon	6b23cbc852	AST_Do nodes: walk body before condition	2015-01-06 12:29:07 +02:00
Mihai Bazon	13219cebcb	Fix handling \r\n Close #437	2015-01-05 12:14:42 +02:00
Mihai Bazon	e1f0747e4c	Support keep_fnames in compressor, and --keep-fnames. #552 Passing `--keep-fnames` will enable it both for compressor/mangler, so that function names will not be dropped (when unused) nor mangled.	2015-01-05 11:03:13 +02:00
Richard van Velzen	e37b67d013	Add an option to prevent function names from being mangled See #552. This is mostly useful for having the actual function names in traces.	2015-01-04 21:48:43 +01:00
Caridy Patino	ad18689d92	using the original sourcemap as the base * Creates a new SourceMapGenerator based on a SourceMapConsumer: https://github.com/mozilla/source-map#sourcemapgeneratorfromsourcemapsourcemapconsumer	2015-01-04 21:08:29 +01:00
Richard van Velzen	24bc09b79b	Fix #556 `\uFEFF` (ZERO WIDTH NO-BREAK SPACE) is removed when parsing, but was un-escaped for the output when `ascii_only` was false. When using UglifyJS multiple times (creating packages from minified sources, for example), this would lead to problems because the byte was removed when parsing for the second time.	2015-01-04 15:01:55 +01:00
Richard van Velzen	37c17d5541	Merge pull request #570 from rvanvelzen/fix-569 Fix #569	2015-01-04 14:02:08 +01:00
Richard van Velzen	120948fa48	Merge pull request #584 from clyfish/fix-base54 fix base54	2015-01-04 14:00:23 +01:00
Richard van Velzen	66e6f0c3cb	Merge pull request #592 from micschro/patch-1 Fix max_line_len not working for JSON files	2015-01-04 13:53:31 +01:00
Richard van Velzen	f4d36a58c2	Fix #569 When no arguments are given to `new Function()`, it should be treated as a regular anonymous function (http://es5.github.io/#x15.3.2.1)	2015-01-04 13:37:59 +01:00
Richard van Velzen	c75f5a1fd8	Fix #597 NaN and Infinity were replaced in the output generation, instead of during compression. This could lead to results where `1/0` was inserted without parens leading to invalid output. The nodes are replaced in the compression step now, and the output generation returns their regular names. This should not be a problem, since they're already only constructed from the original name.	2014-12-31 12:23:00 +01:00
micschro	39d8880f2c	Fix max_line_len not working for JSON files As `maybe_newline()` is only called when `might_need_semicolon` is `true`, the `max_line_len` option has no effect for files without (or with very few) semicolons (like JSON files). A simple for this problem is to use `maybe_newline()` instead of `noop` as the `newline()` function in non-beautify mode.	2014-12-17 16:31:03 +01:00
Mihai Bazon	f101d6429b	Merge pull request #546 from jacobk/patch-1 Use uglify source map token names if missing	2014-12-04 14:07:08 +02:00
Cheng Liangyu	fe06fc85d3	fix base54	2014-12-01 13:16:44 +08:00
Mihai Bazon	f36a1eaa8b	Add option to allow return outside of functions. Close #288	2014-10-20 18:12:13 +03:00
Mihai Bazon	01d19b4b52	Referencing a global is assumed to have side effects. Close #550	2014-09-28 11:18:25 +03:00
Arnavion	7be680d3f8	Don't warn for an unreferenced exception symbol in a catch block.	2014-09-12 21:01:19 -07:00
Jacob Kristhammar	21b3c890a1	Use uglify source map token names if missing	2014-09-09 13:02:50 +02:00
Tal Ater	fb0ec720a4	Compress conditions that have side effects using sequences	2014-09-04 02:57:49 +03:00
Tal Ater	885835a655	Compress conditional assignments where all possible outcomes are equivalant and condition has no side effects	2014-09-02 23:30:25 +03:00
Mihai Bazon	4c64554808	Turn foo.new into foo["new"] when not --screw-ie8. Fix #534	2014-08-26 10:11:01 +03:00
Mihai Bazon	548beeb6b1	Prevent error for Function(""). Close #538	2014-08-20 09:16:34 +03:00
Ingvar Stepanyan	b467a3c877	Added generative testing for AST conversions.	2014-08-03 20:48:59 +03:00
Ingvar Stepanyan	5e314bf3e9	SpiderMonkey `Identifier` nodes should contain mangled names.	2014-08-03 01:28:58 +03:00
Ingvar Stepanyan	05ba26c7c8	Small fixes for AST conversion.	2014-08-02 13:18:27 +03:00
Ingvar Stepanyan	87b72364a4	Fixes and improvements for UglifyJS->SM AST conversion. * Explicitly forbidden multiple catch clauses as SM-specific feature. * Simplified describing of UglifyJS->Mozilla AST conversion rules. * Moved alias rules to single place. * Removed usage of dynamic type bindings in generated code (speed-up).	2014-08-01 23:45:37 +03:00
Ingvar Stepanyan	0e3ff1f970	Improved UglifyJS<->SpiderMonkey AST conversions. * Added directives recognition in SM AST. * Moved semi-standard SM `Property` type to separate handler. * Added `const` recognition from SM AST. * Removed redundant `this`-as-identifier recognition. * Removed redundant rules for abstract SM types. * Described `CatchClause` using string syntax. * Added support for semi-standard `range` tuple as location source. * Added back-conversion support (to be improved).	2014-08-01 23:42:34 +03:00
Mihai Bazon	62bda71c85	Fix parens for AST_Undefined Do the same as for AST_Unary, since we output undefined as `void 0`. Reported at https://github.com/mishoo/UglifyJS2/issues/338#issuecomment-48858341	2014-07-18 11:31:41 +03:00
Mihai Bazon	ac2caf1088	Check for the case an AST_For's init is an EmptyStatement (lame fix for #503)	2014-07-01 23:10:44 +03:00
Dan Wolff	8511e80f48	Evaluate "foo".length ==> 3	2014-07-01 11:06:51 +03:00
Artemy Tregubenko	524a8a42a4	added @ngInject support for inline functions	2014-05-11 14:01:08 +02:00
Mihai Bazon	7bf59b5bcd	Actually, even better. #475 - also handle x = + ++y, x = - --y; - don't use parens, a space suffices.	2014-04-27 21:42:14 +03:00
Mihai Bazon	025f3e9596	Better fix for #475	2014-04-27 20:54:54 +03:00
Mihai Bazon	8258edd8a5	Fix parens in +(+x). Close #475	2014-04-27 20:51:01 +03:00
Mihai Bazon	71652690b6	Merge pull request #445 from ConradIrwin/try-statement Handle TryStatements trees from acorn >=0.2.0	2014-04-24 10:46:53 +03:00
Mihai Bazon	8fbe200012	Always quote property names that contain non-ASCII characters. Fix #328	2014-04-18 10:48:44 +03:00
Arnavion	e2e09d5754	Allow colons in the pairs passed to AST_Toplevel.wrap_enclose	2014-03-22 18:02:21 -07:00
Conrad Irwin	514936beb8	Handle TryStatements trees from acorn >=0.2.0	2014-03-06 17:07:49 -08:00
Arnavion	014f655c5f	Handle the case when SourceMapConsumer.originalPositionFor returns null source. This happens when SourceMapConsumer does not have a valid position to map the input line and column. This is a change in mozilla/source-map starting from version 0.1.33 Fixes #436	2014-03-02 19:20:19 -08:00
Mihai Bazon	bf30dc3038	Mangle name of exception when --screw-ie8. Fix #430 . The effect of not mangling it was visible only with --screw-ie8 (otherwise the names would be mangled exactly because they leaked into the parent scope).	2014-02-14 13:58:14 +02:00
Mihai Bazon	ef2ef07cbd	Add option `keep_fargs`. By default it's `false`. Pass `true` if you need to keep unused function arguments. Close #188.	2014-02-08 12:33:56 +02:00
Matt Basta	ac0086a745	Simplify nested conditionals if possible	2014-02-06 12:39:13 -08:00
Mihai Bazon	5344b7dab8	Fix if_return dropping the alternative. Close #413	2014-01-31 10:44:13 +02:00
Mihai Bazon	e29048b54a	Merge branch 'master' of github.com:mishoo/UglifyJS2	2014-01-26 10:07:10 +02:00
Mihai Bazon	ceb200fe81	Move unescaping regexps under a codegen option (`unescape_regexps`)	2014-01-26 10:05:55 +02:00
Daniel Stutzman	f5f8239057	Don't unescape \x00 in regexes (it breaks IE8)	2014-01-25 11:55:39 -07:00
Mihai Bazon	931862e97f	More chars that cannot be unescaped in regexps.	2014-01-21 11:44:00 +02:00
Mihai Bazon	1d0127de21	Fix end token for conditionals. Close #404	2014-01-21 10:38:59 +02:00
Ville Lautanala	1e31011874	Don't unescape byte order marks in regexps	2014-01-19 12:27:03 +02:00
Mihai Bazon	4339bd5cfa	Don't unescape \x2f (slash) in regexps. #54	2014-01-18 12:31:50 +02:00
Mihai Bazon	90a330da16	simplify	2014-01-10 10:36:15 +02:00
Mihai Bazon	cad1f9cbd1	Unescape Unicode sequences in regexps when ascii_only is false. #54	2014-01-10 10:33:58 +02:00
Mihai Bazon	c3087dd179	Better process_for_angular before other statement reductions. #395	2014-01-08 11:39:24 +02:00
Mihai Bazon	2c305af478	Support @ngInject with `angular` compressor option. Close #395 .	2014-01-08 11:28:32 +02:00
Mihai Bazon	2c88eb6fbe	doh.	2014-01-07 12:54:14 +02:00
Mihai Bazon	27142df4f5	minor: exp["10"] => exp[10]	2014-01-07 12:48:21 +02:00
Mihai Bazon	5e4c7f4245	Fix parens for property access -- (foo, bar)["baz"]	2014-01-05 11:48:01 +02:00
Mihai Bazon	b521b4b926	Conditional/call optimization foo ? bar(x) : bar(y) ==> bar(foo ? x : y)	2013-12-29 10:31:30 +02:00
Mihai Bazon	aa9de76370	Mark `yield` as reserved word. Close #375 .	2013-12-22 20:52:19 +02:00
Mihai Bazon	5a083a938d	Optimize seq,void 0. Close #377 . (x, void 0) => void x (x, undefined) => void x	2013-12-22 11:36:45 +02:00
Mihai Bazon	7a30d826b8	Better fix for comments in AST_Exit Close #374	2013-12-18 15:54:12 +02:00
Mihai Bazon	be55a09edf	Take out all comments from an AST_Exit's value Fix #372	2013-12-18 13:30:26 +02:00
Mihai Bazon	428e19fed2	Add option to adjust the src/target line in the source map	2013-12-18 12:10:02 +02:00
Mihai Bazon	f65e55dff4	minor	2013-12-16 20:37:09 +02:00
colorhook	fa3300f314	bugfix #242	2013-12-16 15:53:43 +08:00
Mihai Bazon	bd0886a2c0	semicolons	2013-12-10 20:24:27 +02:00
Mihai Bazon	248f304f02	Merge pull request #245 from ForbesLindesay/patch-1 Make `DefaultsError` a real `Error` object	2013-12-10 10:23:29 -08:00
Mihai Bazon	dc5f70eab5	Add `drop_console` option to the compressor	2013-12-10 19:44:41 +02:00
Mihai Bazon	df8c5623af	minor	2013-12-10 19:39:03 +02:00
Mihai Bazon	8f35a363d9	AST_Catch shouldn't really inherit from AST_Scope. Fix #363 I hereby acknowledge that figure_out_scope has become a mess.	2013-12-05 13:30:29 +02:00
Mihai Bazon	d2190c2bf3	Properly scope `catch` identifier when --screw-ie8 Fix #344	2013-11-28 16:43:30 +02:00
Mihai Bazon	c16d538ce7	Add --noerr to turn off argument name checking for now only used for keys passed to `-c` or `-b`.	2013-11-28 13:15:01 +02:00
Mihai Bazon	50b8d7272c	Fix faulty compression `String(x + 5)` is not always the same as `x + "5"`. Overlooked that. :-( Close #350	2013-11-20 21:13:16 +02:00
Mihai Bazon	7d11b96f48	Only descend twice after drop_unused if it's the same node type. Fix #345	2013-11-08 11:57:17 +02:00
Mihai Bazon	eab99a1c3d	Better fix for #343 We can in fact lift sequences, but only if the operation is assignment and the left-hand side has no side effects nor property access -- that should guarantee that whatever we place before it cannot affect the sense of the assignment. Dropped contrived test case (too hard to support it now), added a more meaningful one.	2013-11-06 10:48:48 +02:00
Mihai Bazon	f4919e3a25	Do not lift sequence from right-hand side of binary operation. Fix #343	2013-11-06 10:18:28 +02:00
Mihai Bazon	63287c0e68	Workaround for Safari bug Close #313	2013-10-30 13:59:59 +02:00
Mihai Bazon	c5ed2292bf	Fix parsing setters/getters (allow keywords for name). The "key" property was always "set" or "get", which didn't make much sense. Now it'll be the actual name of the setter/getter (AST_Node), and the AST_Accessor object itself, which represents the function, won't store any name. Close #319	2013-10-30 11:50:22 +02:00
Mihai Bazon	b70670b69f	Fix regression after `e4c5302406` `x * (y * z)` ==> `x * y * z` -- the better place to do this is in the compressor rather than codegen.	2013-10-30 10:45:58 +02:00
Mihai Bazon	9dd97605bc	indentation	2013-10-30 10:44:50 +02:00
Mihai Bazon	e4c5302406	Fix output for `x = 2 * (a % b / b * c)` (issue #337)	2013-10-30 09:11:55 +02:00
Mihai Bazon	bea3d90771	minor	2013-10-30 09:10:56 +02:00
Richard van Velzen	785c6064cc	Disallow reversal where lhs has higher or equal precedence Fixes #267	2013-10-29 21:37:36 +01:00
Mihai Bazon	b214d3786f	Fix typo	2013-10-29 15:53:54 +02:00
Mihai Bazon	a14c6b6574	Avoid shadowing name of function expression with function argument Close #179, #326, #327	2013-10-29 13:18:09 +02:00
Mihai Bazon	f1b7094a57	Add "preamble" output option Close #335	2013-10-29 11:09:18 +02:00
Mihai Bazon	0358e376f0	Fix codegen for when comments_before is undefined. Fix #333	2013-10-28 09:39:29 +02:00
Richard van Velzen	e2daee9a65	Fix RHS concat (raised in #330 ) When attempting to concat the left-side of the rhs, make sure the rhs is a string.	2013-10-26 18:44:52 +02:00
Richard van Velzen	1a5a4bd631	Fix #269 Shorten most primitives where possible. Also optimize some edge cases.	2013-10-24 11:08:33 +02:00
Richard van Velzen	7055af8221	Fix #280 The `init` of the `ForStatement` is not a `BlockStatement` before it was descended. The descend has to happen first, and then the actual checks.	2013-10-23 22:26:04 +02:00
Mihai Bazon	63d04fff69	Revert #3a81f60 for now (with it some tests break and it can generate invalid output, see issue #44)	2013-10-22 21:50:55 +03:00
Mihai Bazon	d09f0adae3	`arguments` outside of a function is an ordinary variable. Fix #501	2013-10-17 18:20:33 +03:00
Mihai Bazon	3fa9265ce4	wrap up	2013-10-09 22:15:43 +03:00
Mihai Bazon	3a81f60982	Don't drop_unused before compression. Fix #280, #282	2013-10-09 19:15:09 +03:00
Mihai Bazon	f2348dd98b	Rename clean_getters to pure_getters; add pure_funcs.	2013-10-04 13:17:25 +03:00
David Glasser	bb0a762d12	Only allow identifier start characters at the beginning of identifiers. Without this fix, the following source: x = {"\u200c": 42}; would incorrectly be converted into a quoteless key. But while \u200c is allowed to be in identifiers, it cannot be at the beginning, as per ES5. (For example, the SockJS client library doesn't work under uglify starting with d9ad3c7c.)	2013-10-03 17:02:19 -07:00
Mihai Bazon	8cc86fee60	add `clean_getters` compressor option (default `false`) allows one to specify if `foo.bar` is considered to have side effects.	2013-10-02 19:38:01 +03:00
Mihai Bazon	88fb83aa81	minor optimization unlikely to help in hand-written code: (something() ? foo : bar) == foo ==> something()	2013-10-02 15:31:31 +03:00
Mihai Bazon	95b4507c02	Fix error in the output minifying `Function("return this")()`	2013-09-30 11:49:29 +03:00
Mihai Bazon	afdaeba37d	More attempts to determine when addition is associative Somebody hit me with bug reports on this. :) Refs #300	2013-09-22 15:26:10 +03:00
Mihai Bazon	037199bfe2	Actually let's move away those monsters from the evaluate function ev() should do a single thing — evaluate constant expressions. if that's not possible, just return the original node. it's not the best place for partial evaluation there, instead doing it in the compress functions.	2013-09-22 15:00:42 +03:00
Mihai Bazon	583fac0a0f	More dirty handling of [ ... ].join() in unsafe mode Close #300	2013-09-22 13:14:42 +03:00
Dan Wolff	e8158279ff	Evaluate [...].join() if possible: minor bugfix Follow-up to `78e98d2`.	2013-09-22 11:34:30 +03:00
Mihai Bazon	78e98d2611	When `unsafe` is set, evaluate [...].join() if possible Close #298	2013-09-19 18:20:45 +03:00
Dan Wolff	8d14efe818	Concatenate strings also on the right-hand side of an expression that cannot be evaluated. Fix #126 E.g. converts: a+'Hello'+'World' to a+'HelloWorld'	2013-09-19 13:03:03 +03:00
Mihai Bazon	83ba338bd0	Avoid printing <!-- in the output (HTML5 comment)	2013-09-06 10:10:45 +03:00
Mihai Bazon	7c10b25346	Support HTML5 comment syntax (enabled by default!) See http://javascript.spec.whatwg.org/#comment-syntax https://github.com/mishoo/UglifyJS/issues/503 https://github.com/marijnh/acorn/issues/62	2013-09-06 09:54:30 +03:00
Mihai Bazon	cb9d16fbe4	minor	2013-09-06 09:52:56 +03:00
Mihai Bazon	5d8da864c5	Fix names.	2013-09-02 19:38:00 +03:00
Mihai Bazon	85b527ba3d	Disallow `continue` referring to a non-IterationStatement. Fix #287 Simplifies handling of labels (their definition/references can be easily figured out at parse time, no need to do it in `figure_out_scope`).	2013-09-02 19:36:16 +03:00
Mihai Bazon	1c6efdae34	Better fix for #286	2013-09-02 11:36:48 +03:00
Mihai Bazon	b0ca896d98	Fix parsing `a.case /= 1` Close #286	2013-09-02 11:09:54 +03:00
Mihai Bazon	78a217b94c	Fix parsing regexp after unary-prefix operator ++/x/.y Fix #284	2013-09-02 09:56:27 +03:00
Mihai Bazon	ed80b4a534	Move support for `negate_iife` in the compressor, rather than code generator (the code generator doesn't maintain enough context to know whether the return value is important or discarded) Fixes #272	2013-08-20 17:45:52 +03:00
Michael Ficarra	d9ad3c7cbf	fixes #259 : don't unnecessarily quote object properties when --screw-ie8	2013-08-18 19:45:06 -05:00
Mihai Bazon	4c4dc2137c	Don't drop unused setter argument. Fix #257	2013-08-07 12:04:58 +03:00
Mihai Bazon	964d5b9aa4	Don't pretend to evaluate lambdas Fix #255	2013-08-04 21:44:17 +03:00
Mihai Bazon	41c627379c	Reverting "added option for dropping unused params" Revert "added option for dropping unused params" (turns out we already had the `unused` option for this.) This reverts commit `e54df2226f`.	2013-07-25 18:08:36 +03:00
Dusan Bartos	e54df2226f	added option for dropping unused params	2013-07-25 17:37:47 +03:00
Forbes Lindesay	dfa395f6ff	Make `DefaultsError` a real `Error` object	2013-07-22 01:44:03 +01:00
David Glasser	b1febde3e9	Fix output for arrays whose last element is a hole: [1,,] `1529ab96` started to do this (by considering holes to be separate from "undefined") but it still converted [1,,] (length 2, last element hole, trailing comma) to [1,] (length 1, trailing comma) Unfortunately the test suite doesn't really make this clear: the new test here passes with or without this patch because run-tests.js beautifys the expected output (in "make_code"), which does the incorrect transformation! If you make some manual change to arrays.js to make the test fail and see the INPUT and OUTPUT, then you can see that without this fix, [1,,] -> [1,], and with this fix it stays [1,,].	2013-07-18 15:39:22 +03:00
Mihai Bazon	193049af19	Revert previous patch, it was no good.	2013-07-15 11:59:23 +03:00
Mihai Bazon	4a0bab0fa3	Add "position" option to parser, to specify initial pos/line/col (for parsing embedded scripts)	2013-07-15 11:27:11 +03:00
Mihai Bazon	9243b0cb9d	Apply transformer to AST_VarDef's name Fix #237	2013-07-14 13:24:09 +03:00
Mihai Bazon	fc9ba323c4	Fix typo. Close #239	2013-07-12 09:56:58 +03:00
Mihai Bazon	02a84385a0	Don't swap binary ops when "use asm" is in effect. Refs #167	2013-06-07 12:52:09 +03:00
Ville Lautanala	f29f07aabd	Escape null characters as \x00 Since \0 might be mistakenly interpreted as octal if followed by a number and using literal null is in some cases interpreted as end of string, escape null as \x00.	2013-06-03 20:46:42 +03:00
Mihai Bazon	9fc6796d2a	Add `negate_iife` option to the code generator. See discussion in `a9511dfbe5`	2013-05-22 21:22:14 +03:00
Mihai Bazon	9fc8a52142	Set "global" on undeclared SymbolDef-s	2013-05-22 13:08:19 +03:00
Mihai Bazon	22a038e6a2	Fix output of statement: `new function(){...};` Close #209	2013-05-20 08:27:37 +03:00
Mihai Bazon	ca3388cf5a	Add `--expr`, an option to parse a single expression (suitable for JSON)	2013-05-15 13:27:23 +03:00
Mihai Bazon	caa8896a8a	Only compress code in `new Function` if all arguments are strings.	2013-05-14 18:36:31 +03:00
Mihai Bazon	f64539fb76	Compress code passed to `new Function` if it's a constant. Only for `--unsafe`. Close #203	2013-05-14 10:47:06 +03:00
Mihai Bazon	d56ebd7d7b	Fix a["1_1"] Close #204	2013-05-14 10:42:34 +03:00
Mihai Bazon	a9511dfbe5	Use the negation hack rather than parens for a toplevel function expression call (only in !beautify mode)	2013-05-09 08:58:47 +03:00
Mihai Bazon	064e7aa1bb	Fix is_assignable (not likely to be noticed, it's only used in `strict` parse mode)	2013-05-09 08:44:24 +03:00
Mihai Bazon	11e24d53a1	Fix property names Close #199	2013-05-08 22:37:48 +03:00
Mihai Bazon	a6ed2c84ac	Better fix for equality of typeof ... against "undefined"	2013-05-08 16:22:48 +03:00
Justin Lau	a1958aad56	Fixed typeof undefined optimization and updated related test case to accomodates the sort behaviour changes made in commit mishoo/UglifyJS2@aebafad41e. Signed-off-by: Justin Lau <justin@tclau.com>	2013-05-08 16:22:48 +03:00
Justin Lau	9af2bbffde	Fixed dot properties not optimizing unicode identifiers. Signed-off-by: Justin Lau <justin@tclau.com>	2013-05-07 14:20:19 +03:00
Justin Lau	1e3bc0caa0	Fixed dot property issue with invlid identifier names. Signed-off-by: Justin Lau <justin@tclau.com>	2013-05-05 22:27:43 +08:00
Mihai Bazon	9794ebf88c	Workaround for missing `prefix` in UnaryExpression generated by Esprima See #193	2013-04-29 15:03:52 +03:00
Michael Ficarra	5af144522a	fixes #189 : use dotted member access when --screw-ie8 option given	2013-04-20 15:11:05 -05:00
Roman Bataev	4b818056cf	Fix typeof evaluation for regex and function	2013-04-03 22:34:38 -04:00
Vladimir Zhuravlev	37d7cb8565	Quote objects with numeric keys	2013-03-31 19:52:28 +03:00
Mihai Bazon	a869b854fa	Don't use \xYY for identifiers Fix #173	2013-03-31 13:36:22 +03:00
Andreas Lind Petersen	81f5efe39a	Output, to_ascii: Escape non-ascii chars with \xnn instead of \unnnn whenever possible.	2013-03-31 13:36:22 +03:00
Michał Gołębiowski	75f0bbe6e8	renamed --screw-ie to --screw-ie8, documented it in README.md, indicated it doesn't break IE9+	2013-03-25 17:03:21 +01:00
Jake Harding	478bf4dbdd	Add support for enclose option. Closes #139 .	2013-03-24 11:11:23 +02:00
Mihai Bazon	e0f67baf2d	Don't print the warning on parse error, just throw a JS_Parse_Error. Fix #159	2013-03-24 00:57:35 +02:00
Mihai Bazon	b14d3df3d2	Keep legit code working even when --screw-ie is not passed. Previously: Without `--screw-ie`, UglifyJS would always leak names of function expressions into the containing scope, as if they were function declarations. That was to emulate IE<9 behavior. Code relying on this IE bug would continue to work properly after mangling, although it would only work in IE (since other engines don't share the bug). Sometimes this broke legitimage code (see #153 and #155). With `--screw-ie` the names would not be leaked into the current scope, working properly in legit cases; but still it broke legit code when running in IE<9 (see #24). Currently: Regardless of the `--screw-ie` setting, the names will not be leaked. Code relying on the IE bug will not work properly after mangling. <evil laughter here> Without `--screw-ie`: a hack has been added to the mangler to avoid using the same name for a function expression and some other variable in the same scope. This keeps legit code working, at the (negligible, indeed) cost of one more identifier. With `--screw-ie` you allow the mangler to name function expressions with the same identifier as another variable in scope. After mangling code might break in IE<9. Oh man, the commit message is longer than the patch. Fix #153, #155	2013-03-22 18:04:46 +02:00
Mihai Bazon	9b1a40dfc3	Support mangling toplevel names Close #127	2013-03-13 09:44:06 +02:00
Mihai Bazon	e4b078cff7	Disable `unsafe` by default Close #147	2013-03-11 00:04:31 +02:00
Mihai Bazon	aebafad41e	Fix reordering comparisons Close #143	2013-03-04 10:06:01 +02:00
Mihai Bazon	26746ce316	Add `--screw-ie` option For now the implication is that UglifyJS will not leak a function expression's name in the surrounding scope (IE < 9 does that). (ref. mishoo/UglifyJS#485)	2013-03-02 14:28:34 +02:00
Mihai Bazon	dac6efb43d	Drop last `default:` if it's the last branch and empty Close #141	2013-03-01 13:12:03 +02:00
Mihai Bazon	8880f4824c	Compress boolean constants after evaluation Close #137	2013-03-01 10:26:06 +02:00
Mihai Bazon	3a591c43fe	Fix compressing `do {...} while (false)` It's not safe to transform it to {...} because the body might contain `break`. The solution could be more elaborate (detect if body contains `break`) but I don't think it's worth the trouble. Close #129	2013-02-19 18:12:19 +02:00
Mihai Bazon	916faf0a48	Force space after literal regexp when used in "instanceof" or "in" Close #118	2013-02-06 11:57:59 +02:00
Mihai Bazon	f36e4e9a78	Give up evaluating (unary-prefix '-' 0) Close #117 ------ JS, WHY YOU SUCK SO BADLY? ;-(	2013-02-06 11:51:09 +02:00
Mihai Bazon	fdf8b5eb71	Fix parens for NaN Close #116	2013-02-06 11:38:29 +02:00
Mihai Bazon	de7ec7f1b7	Fix parens for negative numbers Close #115	2013-02-06 11:36:04 +02:00
Mihai Bazon	3c8a0bdff4	Fix parens for AST_New Close #114	2013-02-06 11:28:49 +02:00
Mihai Bazon	9e8ba27dcd	Fix handling of constants Close #113	2013-02-06 11:15:31 +02:00
Mihai Bazon	719a8fd102	Ugly hack to print comments before return/throw statements Close #112	2013-02-05 19:11:39 +02:00
Mihai Bazon	a5b209470c	Fix end token for Assign nodes	2013-02-01 13:32:15 +02:00
Richard Gibson	522566ea80	Fix #105 : property comparison to undefined is not always safe	2013-01-23 23:52:04 -05:00
Mihai Bazon	faa354f5ca	[AST_Hole] the print function can be a no-op.	2013-01-17 11:36:10 +02:00
David Glasser	1529ab965a	Fix output for arrays containing undefined values. `1b6bcca7` was a first attempt at this. That commit made Uglify stop replacing holes with undefined, but instead it started replacing undefined with holes. This is slightly problematic, because there is a difference between a hole and an undefined value. More problematically, it changed [1,undefined] to [1,] which generally doesn't even parse as a hole (just as a trailing comma), so it didn't even preserve the length of the array! Instead, parse holes as their own special AST node which prints invisibly.	2013-01-17 11:36:10 +02:00
Mihai Bazon	f0909bdc8f	Handle String() with no arguments. Fix #91	2013-01-17 11:01:38 +02:00
Mihai Bazon	6b14f7c224	Fix handling of labels in nested scopes	2013-01-04 14:17:33 +02:00
Mihai Bazon	83a4ebfedc	Implement `-m sort=true` close #83	2013-01-02 12:39:00 +02:00
Mihai Bazon	9916d0e547	Accept string or number as name of an accessor. [not sure I'm happy about this fix] Reference mishoo/UglifyJS#478	2012-12-22 01:24:04 +02:00
Mihai Bazon	31c4a37e37	Optimize new Array(1, 2, 3) → [1, 2, 3] Close #74	2012-12-21 21:04:35 +02:00
Mihai Bazon	08219f0cee	Fix output when semicolons is off. (need to force a semicolon for the empty body of an `if`) Close #72	2012-12-21 11:57:08 +02:00
Mihai Bazon	c4993e1e5c	Small cleanup	2012-12-12 11:51:55 +02:00
Mihai Bazon	98978fc827	Add proper parens in "NoIn" expressions. fix #60.	2012-12-06 12:27:57 +02:00
Mihai Bazon	16430acc1f	small improvement on merging assignments into hoisted vars	2012-12-05 13:14:49 +02:00
Mihai Bazon	320c110b33	When hoisting variables, try to merge in assignments that follow.	2012-12-05 12:30:25 +02:00
Mihai Bazon	5cc90db7d0	Don't messup compressor stack while optimizing Switch Fix #59	2012-11-30 11:16:09 +02:00
Mihai Bazon	13c4dfcabd	fix #55	2012-11-24 10:02:08 +02:00
Mihai Bazon	4f555e2232	fix for https://github.com/mishoo/UglifyJS/issues/474	2012-11-23 10:20:00 +02:00
Mihai Bazon	089ac908b7	fix #51	2012-11-18 17:37:45 +02:00
Mihai Bazon	0d3fd2ef30	retain (1,eval) as is when it's the expression of an AST_Call otherwise we change the meaning of eval from global to lexical.	2012-11-17 12:05:31 +02:00
Richard van Velzen	e98119496a	Add support for somewhat preserving line numbers. Usage: uglifyjs2 -b "beautify=0,preserve_line=1" /path/to/js ref #46	2012-11-14 15:30:18 +02:00
Mihai Bazon	bdfcbf496b	better solution for the last test in constant switch folding	2012-11-14 12:21:43 +02:00
Mihai Bazon	dba8da4800	optimize constant switch blocks ref. mishoo/UglifyJS#441	2012-11-14 12:06:07 +02:00
Mihai Bazon	60c0f40250	Merge branch 'optimize_concat' of https://github.com/rvanvelzen/UglifyJS2 into rvanvelzen-optimize_concat	2012-11-13 14:38:55 +02:00
Mihai Bazon	e02771a5f2	don't change order in binary expressions if both operands have side effects	2012-11-13 14:32:07 +02:00
Richard van Velzen	f96f796f71	Add simple optimization for empty-string concats. ref. #43	2012-11-12 15:41:03 +01:00
Mihai Bazon	53355bdb24	fix invalid AST produced by dropping unused variable close #44	2012-11-12 13:23:57 +02:00
Dan Wolff	b49230ab8d	convert x.toString() to ""+x instead of x+"" In some places this can save one byte in whitespace, e.g. after return. Example: function f(arg) { // return""+arg - no space between return and "" return arg.toString(); }	2012-11-11 15:53:34 +02:00
Mihai Bazon	1e5e13ed81	AST_LabelRef no longer inherits from AST_SymbolRef	2012-11-08 15:39:14 +02:00
Mihai Bazon	e312c5c2a7	fix API breakage close #36, #38	2012-11-08 12:31:28 +02:00
Mihai Bazon	1a5fd3e052	optimization for if/break as first statement in a loop body for(...; x; ...) if (y) break; → for(...; x&&!y; ...); similarly for `while` and some combinations (i.e. the `break` appears in the `else` clause, etc.)	2012-11-08 11:43:14 +02:00
Mihai Bazon	46be3f2bf1	fix another small regression we do need parens here: `new (foo.bar().baz)`, but not here: `new foo.bar.baz`	2012-11-07 13:31:43 +02:00
Mihai Bazon	80da21dab4	fix regression from `5346fb94` (shouldn't parenthesize i++ in x[i++])	2012-11-07 13:02:51 +02:00
Mihai Bazon	5276a4a873	add AST_Accessor and AST_SymbolAccessor node types AST_Accessor will represent the function for a setter or getter. Since they are not mangleable, and they should not introduce a name in scope, we have a new node for their name (AST_SymbolAccessor) which doesn't inherit from AST_SymbolDeclaration. fix #37	2012-11-07 12:43:27 +02:00
Mihai Bazon	a1ae0c8609	parenthesize property access when it's the expression in New refs #35	2012-11-07 12:26:33 +02:00
Mihai Bazon	a90c1aeafe	further fix for parens around New (refs #35 )	2012-11-07 11:49:06 +02:00
Mihai Bazon	ff388a8d2d	parenthesize a Call expression when its parent is New fix #35	2012-11-07 11:36:15 +02:00
Mihai Bazon	5346fb94bb	add proper parens around unary expressions fix #34	2012-11-07 11:23:50 +02:00
Mihai Bazon	a4f6d46118	add option to mangle names even if eval/with is in use (for more fair comparison to Closure compiler)	2012-11-06 18:19:51 +02:00
Mihai Bazon	ffccb233e5	convert `while` into `for`	2012-11-05 16:01:20 +02:00
Mihai Bazon	fba0c1aafe	minor	2012-11-05 16:01:09 +02:00
Mihai Bazon	774f2ded94	minor optimization for `==` or `!=` against a constant, prefer to display the constant first. should help a bit after gzip, i.e.: typeof foo=="undefined" ^^^^^^ ^^^^^^^^^^^^^ vs: "undefined"==typeof foo ^^^^^^^^^^^^^^^^^^^ (longer sequence that could repeat) idea stolen from closure.	2012-11-05 13:13:06 +02:00
Mihai Bazon	85af942d64	print final semicolon close #28	2012-11-05 13:09:39 +02:00
Mihai Bazon	8413787efc	use a Dictionary object instead of plain object for hashes to mitigate the `__proto__` issue related to #30	2012-11-02 10:58:45 +02:00
Mihai Bazon	cf409800be	it's safe to negate expression in !EXP only in boolean context #kendo	2012-11-01 15:49:05 +02:00
Mihai Bazon	18270dd9f3	added unsafe_comps for negating `<=` with `>` since it has the potential to break code, let's keep it disabled by default	2012-11-01 15:14:56 +02:00
Mihai Bazon	d4c25c571b	fix compressing UnaryPrefix only try negating the expression if the operator is `!` #kendo	2012-11-01 13:35:08 +02:00
Mihai Bazon	abe0ebbf02	don't move expressions containing the binary `in` operator into the `for` initializer (opera can't parse it) close #25	2012-10-30 14:50:47 +02:00
Mihai Bazon	cb3cafa14d	cripple scope to make IE happy :-( close #24	2012-10-25 18:52:35 +03:00
Mihai Bazon	70fd2b1f33	fix for `if (...) return; else return ...;` (it was assumed that the first `return` always contains a value) close #22	2012-10-24 09:33:32 +03:00
Mihai Bazon	30faaf13ed	more sequence optimizations (lift some sequences above binary/unary expressions so that we can avoid parens)	2012-10-22 11:58:06 +03:00
Mihai Bazon	fc8314e810	minor fix for dropping unused definitions. function f(x, y) { var g = function() { return h() }; var h = function() { return g() }; return x + y; } now compresses to `function f(x, y) { return x + y }`	2012-10-19 12:57:29 +03:00
Mihai Bazon	afb7faa6fa	more optimizations for some break/continue cases	2012-10-18 15:14:57 +03:00
Mihai Bazon	253bd8559b	more small optimizations (unlikely to help for hand-written code)	2012-10-17 21:57:08 +03:00
Mihai Bazon	6a099fba66	define aborts on AST_If: true if both branches abort	2012-10-17 16:17:14 +03:00
Mihai Bazon	a21f3c6cdd	employ a better parser for command-line arguments to support passing commas in strings in for example: uglifyjs2 -cd TEST="'a,b'" <<EOF console.log(TEST); EOF → console.log("a,b") close #14	2012-10-17 15:56:45 +03:00
Mihai Bazon	8f66458598	the `sort` option is broken anyway, removed it we need to mangle names from outermost to innermost scope; mangling names from inner scopes before we got to the outer scope won't work correctly, therefore sorting doesn't make sense.	2012-10-17 15:24:47 +03:00
Mihai Bazon	6472f9410e	add `semicolons` option in the code generator (default: `true`) pass `false` to separate statements with newlines instead of semicolons	2012-10-17 14:52:08 +03:00
Mihai Bazon	8957b3a694	fix small glitches in source map generation	2012-10-16 15:54:12 +03:00
Mihai Bazon	fcc0229087	drop unused function arguments also add test for "drop_unused" (the last one fails for now)	2012-10-13 15:04:44 +03:00
Mihai Bazon	b071c9d079	add parens to AST_Seq whose parent is AST_Unary	2012-10-13 14:32:08 +03:00
Mihai Bazon	851b48e4a3	fix compressing benchmark.js (it tried to evaluate a statement) the following code in benchmark.js triggered the issue: support.decompilation = Function( 'return (' + (function(x) { return { 'x': '' + (1 + x) + '', 'y': 0 }; }) + ')' )()(0).x === '1'; technically that could be resolved into a constant expression, but seems it's being used here for browser bugs detection :-\	2012-10-13 12:57:10 +03:00
Mihai Bazon	708abb1ab1	minor	2012-10-13 12:42:01 +03:00
Mihai Bazon	370d3e0917	fix regression from `fb5c01c073` is_digit takes a char code now, not a string	2012-10-13 12:24:27 +03:00
Mihai Bazon	b51fe0dcc3	fix end tokens in spidermonkey ast import	2012-10-13 11:37:58 +03:00
Mihai Bazon	8149be551e	minor	2012-10-12 14:55:54 +03:00
Mihai Bazon	1b6f8d463f	remove the $self hack operations are destructive anyway, so there's no point to clone the nodes in the transformer. speed++	2012-10-12 11:07:35 +03:00
Mihai Bazon	72cb5328ee	fix in_boolean_context() (two tests were broken)	2012-10-12 10:49:41 +03:00
Mihai Bazon	fc39553714	use AST_Lambda for object setters/getters so that the optimization that drops the name if unused doesn't apply. close #12	2012-10-12 10:11:01 +03:00
Mihai Bazon	d9d67317b1	fix pos in syntax error exception	2012-10-11 15:25:38 +03:00
Mihai Bazon	fb5c01c073	stealing more hacks from acorn in the name of speed	2012-10-11 15:17:42 +03:00
Mihai Bazon	f4584af42c	using makeComparator from acorn to generate functions that tests whether a string is keyword, reserved etc. speeds up the parser a bit, though not spectacular.. still far from acorn.	2012-10-11 11:52:05 +03:00
Mihai Bazon	172aa7a93c	cleanup - use prototype-less objects where feasible (minor speed improvement) - get rid of HOP	2012-10-11 11:07:42 +03:00
Mihai Bazon	5053a29bc0	fix propagation of symbol references	2012-10-11 10:28:48 +03:00
Mihai Bazon	9cdaed9860	fix node name	2012-10-10 23:16:40 +03:00
Mihai Bazon	dacce1b1fa	seems cleaner if AST_Label doesn't inherit from AST_SymbolDeclaration	2012-10-10 11:37:51 +03:00
Mihai Bazon	f26f3b44bc	small improvements in wrap_commonjs: - use MAP.splice instead of a BlockStatement to inject code (avoids some warnings in the linter) - use the original symbol in exports, so that we get the proper source mapping	2012-10-10 11:28:05 +03:00
Mihai Bazon	c5ecbfc756	drop unused variable	2012-10-10 11:27:06 +03:00
Mihai Bazon	3799ac8973	add `--lint` and display {file} in scope_warnings	2012-10-10 11:26:59 +03:00
Mihai Bazon	86182afa7f	minor	2012-10-09 22:56:59 +03:00
Mihai Bazon	a84d07e312	add AST_Infinity node	2012-10-09 18:35:53 +03:00
Mihai Bazon	88beddfa91	make `--comments` keep @cc_on too	2012-10-09 18:25:00 +03:00
Mihai Bazon	1b0aab2ce9	added $propdoc to AST nodes and some cleanups hopefully we can make the AST documentation self-generating	2012-10-09 18:20:39 +03:00
Mihai Bazon	9ead49641d	minor AST cleanup (AST_BlockStatement may inherit from AST_Block)	2012-10-09 13:59:17 +03:00
Mihai Bazon	e1862cd36f	add `--ast-help` displays a rather cruel description of the AST classes, derived directly from the node definitions.	2012-10-09 13:21:21 +03:00
Mihai Bazon	2c025f23db	fix detecting symbols in use	2012-10-09 13:13:55 +03:00
Mihai Bazon	d4970b35ac	should not expose base54.sort() in the API docs, I think	2012-10-08 13:37:27 +03:00
Mihai Bazon	dd8286bce1	added --self to easily get a browser-runnable version of UglifyJS	2012-10-08 12:55:18 +03:00
Mihai Bazon	093a9031dc	eliminate redundant directives in the same scope	2012-10-08 12:53:17 +03:00
Mihai Bazon	80a18fe2fa	for certain nodes that we invent we might not have a original source file to map from, so just use "?". and in any case, don't fail hard when addMapping throws.	2012-10-08 12:52:25 +03:00
Mihai Bazon	455ac5435d	remove unused code	2012-10-05 22:59:05 +03:00
Mihai Bazon	4a2b91220a	minor	2012-10-05 20:24:56 +03:00
Mihai Bazon	a1e0885930	replace `(function(){ ...no side effects ... })()` with `undefined`.	2012-10-05 16:51:16 +03:00
Mihai Bazon	7ae09120ed	prevent mangling only when eval is called, not when it's just referenced	2012-10-05 16:17:31 +03:00
Mihai Bazon	ecd9f21467	fixed import of locations from SpiderMonkey AST	2012-10-05 15:05:06 +03:00
Mihai Bazon	a9b6f9909a	use the appropriate constructor for symbols	2012-10-04 17:28:35 +03:00
Mihai Bazon	708ec0467c	minor	2012-10-04 17:28:09 +03:00
Mihai Bazon	682a58a1f5	removed some unused variables	2012-10-04 08:49:18 +03:00
Mihai Bazon	f20c251882	moving code around	2012-10-03 21:39:47 +03:00
Mihai Bazon	2bd8a118c2	define AST_Node.from_mozilla_ast(ast) returns an UglifyJS2 AST given a Mozilla AST. Still needs some work to do (need to create specific nodes like AST_SymbolRef, AST_SymbolLambda etc. instead of base AST_Symbol, in order for the mangler/compressor to work properly)	2012-10-03 20:03:17 +03:00
Mihai Bazon	11863d6f9a	more cleanup (dropped AST_SwitchBlock)	2012-10-03 15:52:31 +03:00
Mihai Bazon	3412498795	AST cleanup (dropped AST_StatementBase)	2012-10-03 15:41:11 +03:00
Mihai Bazon	c11de17e99	added option for side-effect-free statements, fix test	2012-10-03 13:08:03 +03:00
Mihai Bazon	e0f5075e45	fix endless loop in tests	2012-10-03 12:49:47 +03:00
Mihai Bazon	0678ae2076	fix for `a = !b && !c && !d && !e → a=!(b\|\|c\|\|d\|\|e)`	2012-10-03 11:34:05 +03:00
Mihai Bazon	378ed17809	disable `hoist_vars` by default and change `comparations` to `comparisons`	2012-10-03 11:27:05 +03:00
Mihai Bazon	815abcfe18	support for `--comments` option to keep comments containing @license or @preserve	2012-10-02 16:40:42 +03:00
Mihai Bazon	075f93ec0d	line numbers start at 1	2012-10-02 16:39:53 +03:00
Mihai Bazon	2a5456260e	added option to keep some comments in the output	2012-10-02 14:32:30 +03:00
Mihai Bazon	36be211e99	option to exclude certain names from mangling	2012-10-02 14:02:33 +03:00
Mihai Bazon	dde5b22b5e	support defines	2012-10-02 13:20:07 +03:00
Mihai Bazon	e1098b04a7	"use strict";	2012-10-02 12:45:58 +03:00
Mihai Bazon	211792757c	more constant folding (for names defined with `const`)	2012-10-02 12:45:17 +03:00
Mihai Bazon	347160c631	add AST_SymbolConst for names defined with `const`	2012-10-02 12:22:39 +03:00
Mihai Bazon	ff696cd7bc	drop more unused names	2012-10-02 12:02:33 +03:00
Mihai Bazon	9e5dd81f1e	a shy attempt to obey `width` in the beautifier; added `bracketize` option to always print brackets around if/do/while/for statements; export more options via the CLI	2012-10-02 11:22:38 +03:00
Mihai Bazon	896444482a	minor	2012-09-28 11:12:47 +03:00
Mihai Bazon	05e15b1c0c	fix mangling (bug in our code prevented the mangler from using a name that was in use prior to mangling but not after it)	2012-09-27 00:01:16 +03:00
Mihai Bazon	13278c6649	removed the "squeeze" method (it's now effectively "transform")	2012-09-26 19:52:32 +03:00
Mihai Bazon	15d58f5917	some speedup and more savings from unused vars that have side effects in initialization	2012-09-26 19:05:49 +03:00
Mihai Bazon	78be8f5296	compressor successfully moved to TreeTransformer	2012-09-26 14:27:01 +03:00
Mihai Bazon	a24e7ee976	checkpoint (refactoring, WIP)	2012-09-26 12:16:16 +03:00

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1558 Commits