JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
1,366 Commits 3 Branches 341 Tags 23 MiB
fe647b083e
Commit Graph

835 Commits

Author SHA1 Message Date
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