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2017-02-21Fix: AST_Accessor missing start / end tokensOndřej Španěl
fixes #1492 closes #1493
2017-02-21fix `pure_funcs` & improve `side_effects`alexlamsl
- only drops side-effect-free arguments - drop side-effect-free parts with discarded value from `AST_Seq` & `AST_SimpleStatement` closes #1494
2017-02-21clean up `max_line_len`alexlamsl
- never exceed specified limit - otherwise warning is shown - enabled only for final output closes #1496
2017-02-21introduce `unsafe_proto`alexlamsl
- `Array.prototype.slice` => `[].slice` closes #1491
2017-02-21remove extraneous spaces between ++/+/--/-alexlamsl
fixes #1377 closes #1488
2017-02-21improve `--beautify bracketize`alexlamsl
reduce whitespaces from if-else statements fixes #1482 closes #1483
2017-02-21enhance `global_defs`alexlamsl
- 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
2017-02-21evaluate AST_SymbolRef as parameteralexlamsl
fix invalid boolean conversion now exposed in `make_node_from_constant()` closes #1477
2017-02-21improve reduce_vars and fix a bugalexlamsl
- update modified flag between compress() passes - support IIFE arguments - fix corner case with multiple definitions closes #1473
2017-02-21improve keep_fargs & keep_fnamesalexlamsl
- utilise in_use_ids instead of unreferenced() - drop_unused now up-to-date for subsequent passes closes #1476
2017-02-21smarter const replacement taking name length into accountkzc
closes #1459
2017-02-21clean up `negate_iife`alexlamsl
- 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
2017-02-21improve string concatenationalexlamsl
shuffle associative operations to minimise parentheses and aid other uglification efforts closes #1454
2017-02-21`-c sequences=N` suboptimal at N expression cutoffalexlamsl
N = 2: a; b; c; d; was: a, b; c; d; now: a, b; c, d; fixes #1455 closes #1457
2017-02-21tweak do-while loopsalexlamsl
- `do{...}while(false)` => `{...}` - clean up `AST_While` logic closes #1452
2017-02-21fixes & improvements to [].join()alexlamsl
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
2017-02-21drop unused: toplevel, assign-onlyalexlamsl
- 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
2017-02-21fix stray else in compress with conditionals=falsekzc
closes #1449
2017-02-18enable typeof "undefined" for general usealexlamsl
move out of unsafe, guard corner case with screw_id8 instead closes #1446
2017-02-18fix corner case in keep_fnamesalexlamsl
happens when inner function: - just below top level - not referenced - `unused` is disabled closes #1445
2017-02-18remove unused AST_Scope.nesting & AST_SymbolRef.framealexlamsl
they are computed but never used closes #1444
2017-02-18fix crash in unsafe replacement of undefinedalexlamsl
remove extraneous call to AST_SymbolRef.reference() closes #1443
2017-02-18Improve optimizing `function() { if(c){return foo} bar();}`Anthony Van de Gejuchte
closes #1437
2017-01-26fix mangling collision with keep_fnames (#1431)Alex Lam S.L
* fix mangling collision with keep_fnames fixes #1423 * pass mangle options to figure_out_scope() bring command-line in line with minify()
2017-01-26optimise binary operands with evaluate() (#1427)Alex Lam S.L
- 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`
2017-01-26augment evaluate to extract within objects (#1425)Alex Lam S.L
- 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
2017-01-19add missing LHS cases which global_defs should avoidalexlamsl
2016-11-29Generate source map data from normalized filesMartijn Swaagman
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.
2016-11-29Add --mangle-props-debug and fix --mangle-props=unquoted collisionAshley (Scirra)
Patch by @AshleyScirra Based on: PR #1316 Renamed the CLI debug option to --mangle-props-debug Fixes: #1321 name collision in --mangle-props=unquoted
2016-11-29Do not overwrite options.comments + cleanupAnthony Van de Gejuchte
2016-10-23Don't filter shebangs when using the 'some' comment filterAnthony Van de Gejuchte
Also clarify documentation a bit more about using regexp as filter
2016-10-23fix uses_arguments handling (broken since 6605d1578351)Jann Horn
Using the symbol declaration tracking of UglifyJS doesn't make sense here anyway, `arguments` always comes from something in the current scope. fixes #1299
2016-10-06Remove console.log and add extra test caseRichard van Velzen
2016-10-06Add an option to wrap IIFEs in parenthesisRichard van Velzen
For #1307.
2016-10-06Fix (typeof side_effect()) in boolean contextkzc
Fixes #1289 with suggestion by @rvanvelzen
2016-10-01Optimize unmodified variablesalexlamsl
2016-09-06Make all comment options in cli available in js apiAnthony Van de Gejuchte
Also removing more code within "loop" while at it.
2016-09-01Account for side effects in `string + expr` optimizationkzc
2016-08-30implement optimization: (x = 2 * x) ---> (x *= 2)kzc
2016-08-17Fix negate_iife transform to return a correct tree for nested IIFEsRichard van Velzen
Fix for #1256, partially reverts d854523783b4
2016-08-17Fix negate_iife regression #1254kzc
2016-08-14Fix --mangle-props and --mangle-props=unquotedkzc
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.
2016-08-14Fix unneeded parens around unary args in new expression.kzc
2016-07-21Legacy octal integer strict mode fixesAnthony Van de Gejuchte
2016-07-17lib/sourcemap.js: Copy sourceContent from old souce-map to the new ↵Lauri Pokka
source-map. Should fix #882
2016-07-15Keep const in own scope while compressingAnthony Van de Gejuchte
- Fixes #1205 - Fix provided by @kzc
2016-07-15Fix mangle with option keep_fnames=true for Safari.kzc
Fixes: #1202
2016-07-15Fix error style for regex errorsAnthony Van de Gejuchte
2016-07-03Don't convert all strings to directives from moz-astAnthony Van de Gejuchte
2016-07-01Change the default sequences limit to 200 to speed up compress.kzc
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.
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