Alex Lam S.L
db902af4c6
fix escape analysis on || and && ( #2600 )
...
fixes #2598
2017-12-15 19:48:14 +08:00
Alex Lam S.L
7d6907cb99
fix dead_code on nested try ( #2599 )
...
fixes #2597
2017-12-15 19:41:28 +08:00
Alex Lam S.L
092d9affb8
fix reduce_vars on do...while ( #2596 )
2017-12-15 16:33:19 +08:00
Alex Lam S.L
8f681b1d17
handle inline of function arguments ( #2590 )
...
fixes #2476
2017-12-15 13:28:30 +08:00
Alex Lam S.L
90313875f7
inline single-use function across loop ( #2594 )
2017-12-14 19:24:54 +08:00
Alex Lam S.L
3f18a61532
fix reduce_vars on single AST_Defun reference across loop ( #2593 )
2017-12-14 18:47:05 +08:00
Alex Lam S.L
02a6ce07eb
improve reduce_vars ( #2592 )
...
- account for hoisting nature of `var`
2017-12-14 15:32:13 +08:00
Alex Lam S.L
738fd52bc4
improve collapse_vars ( #2591 )
...
- handle single-use assignments other than `AST_VarDef`
- scan `AST_Call` for candidates
2017-12-14 15:31:35 +08:00
Alex Lam S.L
8266993c6e
fix dead_code on return/throw within try ( #2588 )
2017-12-14 04:38:21 +08:00
Alex Lam S.L
9a137e8613
drop local assign-only variable in return ( #2587 )
2017-12-14 02:59:59 +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
7f418978c9
recover lost opportunities from #2574 ( #2584 )
2017-12-13 18:20:53 +08:00
Alex Lam S.L
04cc395c35
improve collapse_vars on side-effect-free replacements ( #2583 )
2017-12-13 04:52:54 +08:00
Alex Lam S.L
e008dc1bde
minor clean-up for IIFE ( #2582 )
...
- faster exact type match
- aggressively convert to `!`
2017-12-13 01:27:26 +08:00
Alex Lam S.L
ebfd5c5c74
fix AST_VarDef.may_throw() ( #2580 )
2017-12-12 03:30:25 +08:00
Alex Lam S.L
f2ad542679
fix collapse_vars on switch ( #2578 )
2017-12-11 18:11:09 +08:00
Alex Lam S.L
c43118be4f
remove unused code ( #2579 )
...
fixes #2577
2017-12-11 17:39:08 +08:00
Alex Lam S.L
93f3b2b114
escape consecutive unpaired surrogates ( #2576 )
...
fixes #2569
2017-12-11 01:15:44 +08:00
Alex Lam S.L
0e16d92786
handle exceptional flow correctly in collapse_vars ( #2574 )
...
fixes #2571
2017-12-11 00:16:02 +08:00
Alex Lam S.L
0aff037a35
improve unused on assign-only symbols ( #2568 )
2017-12-09 06:19:29 +08:00
Alex Lam S.L
74a2f53683
fix escape analysis for AST_Throw ( #2564 )
2017-12-08 02:54:37 +08:00
Alex Lam S.L
e20935c3f2
fix escape analysis for AST_Conditional & AST_Sequence ( #2563 )
...
fixes #2560
2017-12-08 01:50:38 +08:00
Alex Lam S.L
3e34f62a1c
account for side-effects in conditional call inversion ( #2562 )
...
fixes #2560
2017-12-08 01:15:31 +08:00
Alex Lam S.L
d21cb84696
eliminate noop calls more aggressively ( #2559 )
2017-12-07 01:22:08 +08:00
Alex Lam S.L
3dd495ecdd
improve if_return ( #2558 )
...
`return void x()` => `x()`
2017-12-07 01:01:52 +08:00
Alex Lam S.L
77332a0315
fix dead_code on for ( #2552 )
2017-12-02 15:46:05 +08:00
Alex Lam S.L
8da3754e51
improve evaluate on typeof ( #2550 )
...
- gated through `typeofs`
2017-12-02 02:18:33 +08:00
Alex Lam S.L
9a6b11f8e6
improve boolean compression ( #2548 )
...
fixes #2535
2017-12-01 22:41:35 +08:00
Alex Lam S.L
7ac6fdcc99
improve switch case compression ( #2547 )
2017-12-01 14:32:00 +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
09b320e8a5
convert to number under boolean context ( #2545 )
2017-12-01 12:52:36 +08:00
Alex Lam S.L
5a1e99d713
improve compression of if conditions ( #2544 )
2017-12-01 06:18:31 +08:00
Alex Lam S.L
b762f2d6f4
improve compression of loop conditions ( #2543 )
2017-12-01 05:52:33 +08:00
Alex Lam S.L
172079a47f
improve code reuse ( #2542 )
2017-12-01 03:40:46 +08:00
Alex Lam S.L
c58d3936a3
fix corner case in call binding ( #2541 )
2017-12-01 03:18:20 +08:00
Alex Lam S.L
bc5047c1e7
fix inline on nested substitutions ( #2533 )
...
fixes #2531
2017-11-29 13:31:41 +08:00
Alex Lam S.L
206a54a746
fix nested hoist_props substitution ( #2523 )
...
fixes #2519
2017-11-28 14:39:00 +08:00
Alex Lam S.L
32def5ebf5
improve synergy between collapse_vars & unused ( #2521 )
2017-11-28 14:02:39 +08:00
Alex Lam S.L
ecc9f6b770
drop assignment in AST_VarDef.value ( #2522 )
...
fixes #2516
2017-11-28 13:08:40 +08:00
Alex Lam S.L
c141ae6f8d
fix argument/atom collision by properties ( #2514 )
...
fixes #2513
2017-11-25 22:52:46 +08:00
Alex Lam S.L
3b28b915eb
extend escape analysis on constant expression properties ( #2509 )
...
fixes #2508
2017-11-24 14:07:39 +08:00
Alex Lam S.L
eb001dc1d9
fix argument/atom collision by collapse_vars ( #2507 )
...
fixes #2506
2017-11-24 07:26:22 +08:00
Alex Lam S.L
aa9bdf416e
make AST_Lambda.contains_this() less magical ( #2505 )
2017-11-24 07:03:37 +08:00
Alex Lam S.L
8987780db6
eliminate invalid state caching in collapse_vars ( #2502 )
...
fixes #2497
2017-11-24 04:12:37 +08:00
Alex Lam S.L
30cfea2e7a
fix rename ( #2501 )
...
- suppress spurious `rename` from `commander`
- handle `AST_SymbolCatch` correctly
2017-11-24 03:05:43 +08:00
Alex Lam S.L
f4e2fb9864
expand symbol space to improve compression ( #2460 )
...
- give globally distinct names to distinct variables
- improve ability to compress cross-scoped
- introduce `options.rename` to `minify()`
- default `true` if both `compress` & `mangle`
2017-11-19 19:29:51 +08:00
Alex Lam S.L
b80062c490
enable hoist_props by default ( #2492 )
2017-11-19 14:56:23 +08:00
Alex Lam S.L
ae28a24c7f
fix cross-scope inlining of AST_Functions ( #2486 )
...
fixes #2485
2017-11-16 10:04:30 +08:00
Alex Lam S.L
ebe761cad0
minor consolidations ( #2484 )
...
- unique symbol generation
- `unsafe` on `AST_Call`
2017-11-16 04:37:37 +08:00
Alex Lam S.L
49fbe9c5ac
fix replacement logic in collapse_vars ( #2475 )
2017-11-13 07:37:42 +08:00
Alex Lam S.L
2ac5086831
fix top_retain on hoist_props ( #2474 )
...
fixes #2473
2017-11-13 00:59:41 +08:00
Alex Lam S.L
c6cfa04d10
allow symbol replacement on multiple occurrences ( #2472 )
...
- all-or-nothing replacement
- avoid unmangleable names
fixes #2436
2017-11-12 22:31:47 +08:00
Alex Lam S.L
cda27b0970
extend reduce_funcs to cover cross-scope substitutions ( #2469 )
...
fixes #2468
2017-11-11 15:30:17 +08:00
Alex Lam S.L
3c74047368
implement compress option reduce_funcs ( #2466 )
...
- inline single-use function declarations as expressions when permissible
- depend on `reduce_vars`
- enabled by default
- disable for speed critical code
fixes #2464
2017-11-11 05:59:35 +08:00
Alex Lam S.L
94525d859f
fix object literal tracing in reduce_vars ( #2461 )
2017-11-10 05:47:10 +08:00
Alex Lam S.L
1127a2caf3
fix multiple nested function substitutions ( #2458 )
...
fixes #2449
2017-11-09 23:30:00 +08:00
Alex Lam S.L
246d9d4e83
remove hack in collapse_vars ( #2457 )
...
fixes #2456
2017-11-09 20:00:58 +08:00
Alex Lam S.L
4c0b0177b6
preserve function identity in reduce_vars ( #2451 )
...
fixes #2450
2017-11-08 03:28:46 +08:00
Alex Lam S.L
bbedbf4ea0
handle circular function reference gracefully ( #2446 )
...
fixes #2442
2017-11-07 02:37:23 +08:00
Alex Lam S.L
2cfb5aa7da
account for eval & with in reduce_vars ( #2441 )
...
fixes #2440
2017-11-06 16:10:57 +08:00
Alex Lam S.L
6c45101870
consolidate & enhance unused ( #2439 )
...
- defer declaration removal in `collapse_vars`
- account for `AST_SymbolFunarg` in deduplication
- private accounting for `collapse_vars`
- avoid issues with identity reference due to deep cloning
fixes #2437
2017-11-06 14:25:10 +08:00
Alex Lam S.L
2c2fd89e34
inline single-use functions that are not constant expressions ( #2434 )
...
fixes #2428
2017-11-05 22:14:11 +08:00
Alex Lam S.L
5b4b07e9a7
extend function inlining safety checks ( #2430 )
2017-11-05 06:18:45 +08:00
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
