JoBoEVD/UglifyJS
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50 Commits

Author SHA1 Message Date
Alex Lam S.L
10a1523ee6 enhance collapse_vars (#5268) 2022-01-07 05:13:37 +08:00
Alex Lam S.L
87a7426598 enhance inline & unused (#5245) 2022-01-02 05:40:43 +08:00
Alex Lam S.L
7b2eb4b5ff improve handling of non-trivial assignment values (#5227) 2021-12-23 07:55:06 +08:00
Alex Lam S.L
260431f4e0 improve handling of lexical scope (#4979) 2021-05-29 12:48:34 +08:00
Alex Lam S.L
7fa1dea9d0 fix corner cases in collapse_vars (#4978) 
fixes #4977
 2021-05-29 08:57:24 +08:00
Alex Lam S.L
48c46fa9a7 fix corner case in sequences (#4798) 2021-03-18 08:31:55 +08:00
Alex Lam S.L
f52b0e7c31 fix corner case in side_effects (#4752) 
fixes #4751
 2021-03-08 04:19:51 +08:00
Alex Lam S.L
dd30ed6a9b enhance collapse_vars (#4735) 2021-03-05 13:18:01 +08:00
Alex Lam S.L
2a49760032 enhance side_effects (#4727) 2021-03-03 18:47:17 +08:00
Alex Lam S.L
b1cc15e85b fix corner case in sequences (#4080) 
fixes #4079
 2020-08-26 20:41:11 +08:00
Alex Lam S.L
09525c7530 fix corner case in sequences (#4073) 2020-08-26 01:26:49 +08:00
Alex Lam S.L
df506439b1 fix corner case in sequences (#3704) 
fixes #3703
 2020-02-04 04:57:32 +00:00
Alex Lam S.L
a478f275e4 enhance sequences (#3693) 2020-01-28 09:58:01 +08:00
Alex Lam S.L
b1279a46d9 fix corner case in sequences (#3491) 
fixes #3490
 2019-10-17 09:57:50 +08:00
Alex Lam S.L
54cb678055 fix corner case in assignments (#3407) 
fixes #3406
 2019-05-12 03:52:46 +08:00
Alex Lam S.L
e5436ca566 enhance side_effects (#3384) 2019-04-25 15:15:50 +08:00
Alex Lam S.L
a206964c0a enhance side_effects (#3383) 2019-04-25 04:14:21 +08:00
Alex Lam S.L
143f9054da fix corner case in sequences (#3350) 2019-03-20 14:54:26 +08:00
alexlamsl
5ffc17d4aa fix corner case in unused 2018-07-01 14:34:42 +08:00
Alex Lam S.L
d51a00a450 compress AST_Sequence within AST_Call (#3117) 2018-05-03 19:14:56 +08:00
Alex Lam S.L
36bca6934d enhance collapse_vars (#2952) 
- `a = b, b` => `a = b`
- `a.b = c, c()` => `(a.b = c)()`
 2018-02-28 15:19:32 +08:00
Alex Lam S.L
069df27bf1 enable unsafe for test/ufuzz.js (#2819) 
- introduce `unsafe_undefined`
- safer `.toString()` compression

Miscellaneous
- rename `unsafe_Function`
 2018-01-19 23:47:42 +08:00
Alex Lam S.L
79cfac77bd extend join_vars & sequences (#2798) 2018-01-17 13:58:27 +08:00
Alex Lam S.L
673b071637 enhance join_vars & sequences (#2697) 
- nudge declarations without assignments
  - within `AST_BlockStatement`
  - across `AST_If`
 2018-01-01 00:09:26 +08:00
Alex Lam S.L
ef618332ea fold cascade functionality into collapse_vars (#2586) 2017-12-14 01:20:36 +08:00
Alex Lam S.L
f6610baaa8 improve AST_For.init & AST_Switch.expression compression (#2546) 2017-12-01 12:53:59 +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
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
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
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
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
28cfb65c47 extend cascade into a.b (#1829) 
fixes #27
 2017-04-19 04:17:15 +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
cf72fe552f fix delete corner cases (#1799) 
- assignment
- boolean
- conditional
- sequence
 2017-04-08 14:25:28 +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
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
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
a3cc3a9b87 make expect_stdout work on Node.js 0.12 (#1623) 
That particular version of Node.js has messed up error messages, so provide a version-specific workaround.

Also fixed an formatting issue which would cause `expect_stdout` to fail if error message contains excerpts of input.

Apply `expect_stdout` to more applicable tests.
 2017-03-19 12:00:32 +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
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
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
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
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
Mihai Bazon
01d19b4b52 Referencing a global is assumed to have side effects. 
Close #550
 2014-09-28 11:18:25 +03:00
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
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
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
4f97da9660 minor tests fix 2012-09-24 10:27:49 +03:00
Mihai Bazon
45a3970ca3 one more test for sequences 2012-09-17 12:53:52 +03:00
Mihai Bazon
159a6f048c wrote more of the compressor and added some tests 2012-08-22 15:21:58 +03:00