JoBoEVD/UglifyJS
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1448 Commits

Author SHA1 Message Date
Alex Lam S.L
d3d1d11926
fix corner case in ie8 & rename (#3474) 
fixes #3473
 2019-10-15 07:27:02 +08:00
Alex Lam S.L
736019b767
fix corner cases in ie8 (#3472) 
fixes #3471
 2019-10-14 18:15:40 +08:00
Alex Lam S.L
a39bdb5840
fix corner case with collapse_vars & ie8 (#3469) 
fixes #3468
 2019-10-14 13:34:35 +08:00
Alex Lam S.L
516b67a43b
minor tweaks to CI test scripts (#3467) 2019-10-12 05:36:38 +08:00
Alex Lam S.L
eba3a37bb5
fix boolean context detection (#3466) 
fixes #3465
 2019-10-12 03:42:57 +08:00
Alex Lam S.L
6d57ca1a59
improve source map handling (#3464) 
fixes #2947
fixes #3277
fixes #3411
 2019-10-11 03:52:33 +08:00
Alex Lam S.L
3320251b4b
update benchmark URLs (#3462) 2019-10-11 01:00:09 +08:00
Alex Lam S.L
33c94d3bd9
detect boolean context across IIFEs (#3461) 2019-10-10 09:37:02 +08:00
Alex Lam S.L
da9f1622fc
report errors correctly in ufuzz (#3456) 2019-10-07 14:36:00 +08:00
Alex Lam S.L
0a63f2f2b0
workaround V8 RegExp bug (#3453) 
fixes #3434
 2019-10-06 11:49:39 +08:00
Alex Lam S.L
931ac66638
fix corner case in hoist_props (#3452) 
fixes #3440
 2019-10-06 10:29:13 +08:00
Alex Lam S.L
35338a100f
handle function/variable name collisions correctly (#3451) 
fixes #3439
 2019-10-06 08:51:38 +08:00
Alex Lam S.L
a31c477fea
fix variable scope determination (#3449) 
fixes #3444
 2019-10-06 05:13:44 +08:00
Alex Lam S.L
9d3b1efd86
fix corner case in assignments (#3430) 
fixes #3429
 2019-05-30 05:01:53 +08:00
Alex Lam S.L
482e1baea3
enhance assignments & unused (#3428) 
closes #3427
 2019-05-29 01:21:08 +08:00
Alex Lam S.L
b9053c7a25
fix corner case in keep_fargs (#3424) 
fixes #3423
 2019-05-21 12:55:34 +08:00
Alex Lam S.L
ae77ebe5a5
fix corner case in arguments (#3421) 
fixes #3420
 2019-05-19 12:59:40 +08:00
Alex Lam S.L
a246195412
enhance unsafe comparisons (#3419) 2019-05-17 01:28:18 +08:00
Alex Lam S.L
8939a36bc7
reduce false positives from fuzzing (#3417) 2019-05-16 16:15:03 +08:00
Alex Lam S.L
a21c348d93
improve sandbox fidelity (#3415) 2019-05-15 23:26:57 +08:00
Alex Lam S.L
1f0def10eb
fix corner case in comparisons (#3414) 
fixes #3413
 2019-05-15 01:01:18 +08:00
Alex Lam S.L
f87caac9d8
fix corner case in hoist_props (#3412) 
fixes #3411
 2019-05-14 19:12:00 +08:00
Alex Lam S.L
d538a73250
enhance side_effects (#3410) 2019-05-14 05:26:40 +08:00
Alex Lam S.L
2e4fbdeb08
enhance keep_fargs (#3409) 2019-05-13 21:58:04 +08:00
Alex Lam S.L
45fbdbc2dc
improve tests (#3408) 2019-05-12 09:44:02 +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
e88c439eac improve tests (#3405) 2019-05-11 22:06:14 +08:00
Alex Lam S.L
9fc8cd4076
fix corner case in functions (#3403) 
fixes #3402
 2019-05-11 18:55:45 +08:00
Alex Lam S.L
5476cb8f05
fix corner case in inline (#3401) 
fixes #3400
 2019-05-10 01:22:44 +08:00
Alex Lam S.L
6a30e1d6be
improve tests (#3399) 2019-05-09 07:18:22 +08:00
Alex Lam S.L
354fec8a9c
make enclose & wrap work with sourceMap (#3396) 
fixes #3313
 2019-05-04 20:25:52 +08:00
Alex Lam S.L
11cdab745d
fix corner cases in sourceMap (#3397) 
fixes #3255
fixes #3294
 2019-05-04 20:08:57 +08:00
Alex Lam S.L
a89d424a0b
render comments in custom ASTs gracefully (#3393) 
fixes #3246
 2019-05-02 13:50:51 +08:00
Alex Lam S.L
2ea96549c5
unify logging functionality (#3392) 
fixes #3253
fixes #3254
 2019-04-30 06:32:24 +08:00
Alex Lam S.L
c37a8e927e
fix corner case in properties (#3390) 
fixes #3389
 2019-04-29 17:23:00 +08:00
Alex Lam S.L
413bbe0480
fix corner case in evaluate (#3388) 
fixes #3387
 2019-04-29 08:55:46 +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
c56d89f804
enhance unsafe (#3382) 2019-04-25 02:42:54 +08:00
Alex Lam S.L
c215706350
enhance unsafe comparisons (#3381) 2019-04-25 00:08:08 +08:00
Alex Lam S.L
d3b93ec682
fix corner case in unsafe (#3380) 2019-04-24 22:21:28 +08:00
Alex Lam S.L
6fe20dbe33
enhance comparisons (#3379) 2019-04-24 21:38:55 +08:00
Alex Lam S.L
dafed54764
fix corner case in reduce_vars (#3378) 
fixes #3377
 2019-04-24 14:01:01 +08:00
Alex Lam S.L
a84beafd1b
fix corner case in assignments (#3376) 
fixes #3375
 2019-04-24 02:50:15 +08:00
Alex Lam S.L
f01cc1e413
unwind IIFE class patterns (#3373) 
fixes #2332
 2019-04-21 09:49:07 +08:00
Alex Lam S.L
c719552317
fix corner cases in functions (#3372) 
fixes #3371
 2019-04-21 02:16:05 +08:00
Alex Lam S.L
855964a87a
enhance unsafe evaluate (#3370) 2019-04-20 19:42:41 +08:00
Alex Lam S.L
00833e893a
enhance functions (#3368) 2019-04-19 19:01:47 +08:00
Alex Lam S.L
b55a2fd531
fix corner case in functions (#3367) 
fixes #3366
 2019-04-19 02:55:43 +08:00
Alex Lam S.L
e8a2c0b5bf
fix corner case in functions (#3365) 
fixes #3364
 2019-04-18 17:03:52 +08:00
Alex Lam S.L
21cd7e3f57
reduce test exports (#3361) 2019-04-17 16:19:08 +08:00
Alex Lam S.L
5172ba5f2a
introduce functions (#3360) 
`var f = function() {};` => `function f() {}`
 2019-04-15 22:23:11 +08:00
Alex Lam S.L
a74e600fa0
mangle shadowed lambda under ie8 correctly (#3356) 
fixes #3355
 2019-04-01 15:22:00 +08:00
Ruben Bridgewater
4b21526310 Fix test expectation (#3357) 
The test expects a specific precision value that is not met on all V8 versions anymore due to a recent consolidation of different algorithms across the V8 code base.

This makes sure the preceision is tested against one digit less to keep the test working on all V8 versions.

Refs: 98453126c1
Refs: https://github.com/nodejs/node/issues/25060#issuecomment-477953457
 2019-03-30 02:08:27 +08:00
Alex Lam S.L
54b0b49b68
enhance inline (#3352) 2019-03-21 02:58:33 +08:00
Alex Lam S.L
65648d84a5
enhance collapse_vars (#3351) 2019-03-20 23:31:21 +08:00
Alex Lam S.L
143f9054da
fix corner case in sequences (#3350) 2019-03-20 14:54:26 +08:00
Alex Lam S.L
f2286c33f1
enhance unsafe for Array (#3349) 2019-03-20 06:37:51 +08:00
Alex Lam S.L
b9615f7a62
improve compress performance (#3348) 
fixes #3174
 2019-03-20 02:53:04 +08:00
Alex Lam S.L
c520e99eda
enhance comparisons (#3347) 2019-03-19 01:34:25 +08:00
Alex Lam S.L
615ae37ca3
introduce assignments (#3345) 2019-03-18 21:28:41 +08:00
Alex Lam S.L
7aa7f21872
fix corner case in evaluate (#3344) 2019-03-18 21:24:42 +08:00
Alex Lam S.L
4430a436eb
fix corner case in inline (#3343) 2019-03-17 05:31:40 +08:00
Alex Lam S.L
8b3259e0c2
fix corner case in reduce_vars (#3341) 2019-03-15 16:06:47 +08:00
Alex Lam S.L
8d2e6f333e
fix function inlining after reduce_vars (#3340) 
fixes #3297
 2019-03-15 05:45:46 +08:00
Alex Lam S.L
b3ef5e514d
enhance evaluate (#3339) 
fixes #3299
 2019-03-15 02:48:23 +08:00
Alex Lam S.L
627f5fb41e
fix corner case with nameCache (#3338) 
fixes #3301
 2019-03-15 01:15:50 +08:00
Alex Lam S.L
d90777b724
parse mangle.properties.regex in --config-file properly (#3337) 
fixes #3315
 2019-03-15 00:20:20 +08:00
Alex Lam S.L
e49297e5eb
improve usability of pure_funcs (#3336) 
fixes #3325
 2019-03-14 21:36:45 +08:00
Alex Lam S.L
ebd82b3fb6
fix corner case in collapse_vars (#3334) 
fixes #3274
 2019-03-14 16:05:56 +08:00
Alex Lam S.L
d074aa6e27
fix corner case in collapse_vars (#3333) 
fixes #3247
fixes #3305
fixes #3314
fixes #3327
 2019-03-13 23:48:52 +08:00
Alex Lam S.L
b052f62710
fix corner case in reduce_vars (#3332) 
fixes #3267
 2019-03-13 21:56:38 +08:00
Alex Lam S.L
d4ac84b255
fix corner case in arguments & reduce_vars (#3331) 
fixes #3282
 2019-03-13 08:46:03 +08:00
Alex Lam S.L
e250396d7e
fix corner case in arguments (#3330) 
Track modifications to `arguments[i]` under Strict Mode.

fixes #3273
 2019-03-13 06:59:53 +08:00
silverwind
9aae4f2424 make tests compatible with Node.js 12 (#3304) 
In Node.js 12, the formatting of console arguments will change slightly.
Previously, a string other than the first argument was formatted using
single quotes if the first argument was non-string. Now, quotes are
never added regardless of position of a string argument.

To make test compatible in all Node.js versions, I work around by
ensuring the first argument to console.log is a string which prevents
the quotes from being added on older versions of Node.js.

Ref: https://github.com/nodejs/node/pull/23162
 2019-03-13 04:55:04 +08:00
Alex Lam S.L
008c236137
fix corner case in conditionals (#3329) 
fixes #3245
fixes #3257
fixes #3260
fixes #3269
fixes #3271
fixes #3278
fixes #3309
fixes #3319
fixes #3321
 2019-03-13 04:28:21 +08:00
Ed S
b1c0664066 Fix typo in warning (#3324) 
protoype -> prototype
 2019-03-13 02:15:54 +08:00
Alex Lam S.L
ce7e220de4
fix corner case in conditionals (#3244) 2018-08-30 15:59:05 +08:00
Alex Lam S.L
2bdaca10ae
enhance conditionals (#3243) 2018-08-30 01:06:34 +08:00
Alex Lam S.L
aa0029204e
fix corner case in reduce_vars (#3241) 
fixes #3240
 2018-08-29 22:14:25 +08:00
Alex Lam S.L
f352bcec3a
fix corner case in collapse_vars (#3239) 
fixes #3238
 2018-08-29 11:34:34 +08:00
Alex Lam S.L
694ca5d045
fix corner case in unused (#3234) 
fixes #3233
 2018-08-23 06:03:39 +08:00
Alex Lam S.L
57fb58b263
enhance if_return (#3232) 2018-08-21 18:34:16 +08:00
Alex Lam S.L
cfebeb2f63
fix corner case in mangle workaround for Safari (#3230) 
fixes #3227
 2018-08-09 17:34:28 +08:00
Alex Lam S.L
fc78423f1d
clean up webkit quirks (#3229) 2018-08-08 16:15:45 +08:00
Alex Lam S.L
d47547dc71
fix corner case in join_vars (#3224) 2018-07-27 19:34:44 +08:00
Alex Lam S.L
304db15a20
fix corner case in ie8 & rename (#3223) 2018-07-26 16:35:43 +08:00
Alex Lam S.L
7cf72b8d66
fix corner case in global_defs (#3218) 
fixes #3217
 2018-07-19 18:14:36 +08:00
Alex Lam S.L
cea685f8d9
fix corner case in ie8 (#3216) 
fixes #3215
 2018-07-19 14:45:36 +08:00
alexlamsl
34a0ab6f2c improve fuzzing on Travis CI 2018-07-13 02:05:52 +08:00
Alex Lam S.L
bcebacbb9e
fix corner cases in preserve_line (#3212) 2018-07-13 01:51:10 +08:00
Alex Lam S.L
66c126ffde
fix corner case in ie8 (#3207) 
fixes #3206
 2018-07-03 16:44:23 +08:00
alexlamsl
5ffc17d4aa fix corner case in unused 2018-07-01 14:34:42 +08:00
Alex Lam S.L
76df77c08c
implement directives (#3203) 
fixes #3166
 2018-06-28 18:16:49 +08:00
Alex Lam S.L
957d5537a8
improve unsafe comparisons (#3200) 2018-06-28 03:46:19 +08:00
Alex Lam S.L
ab36b9b10a fix corner case in ie8 (#3198) 
fixes #3197
 2018-06-24 04:00:36 +08:00
Alex Lam S.L
28330913d8 improve mocha tests (#3195) 2018-06-24 04:00:36 +08:00
Alex Lam S.L
766a4147d4 enhance arguments (#3193) 
fixes #3192
 2018-06-24 04:00:21 +08:00
Alex Lam S.L
e54ddcbb8a
fix corner cases in properties (#3189) 
fixes #3188
 2018-06-19 18:20:11 +08:00
Alex Lam S.L
9e19e63551
general clean-ups (#3175) 2018-06-06 17:50:56 +08:00
Jiavan
b39043f3ab re-introduce enclose (#3163) 
fixes #2443
 2018-06-01 16:47:11 +08:00
Alex Lam S.L
caf96acb08
handle asynchronous test failures (#3164) 2018-05-31 20:21:39 +08:00
Alex Lam S.L
c76749084b
update JetStream URL (#3165) 2018-05-31 16:23:49 +08:00
Alex Lam S.L
efa21ae3e6
fix corner case in reduce_vars (#3151) 2018-05-26 05:45:44 +08:00
Alex Lam S.L
24d9633a35
fix corner cases with eval() (#3147) 
fixes #3146
 2018-05-24 14:29:30 +08:00
Alex Lam S.L
7963b96681
augment tests for inline source maps (#3145) 2018-05-24 02:37:51 +08:00
Alex Lam S.L
8c62d854ce
augment tests for RegExp (#3144) 2018-05-23 17:24:13 +08:00
Alex Lam S.L
b5af8a1914
fix corner case in reduce_vars (#3141) 
fixes #3140
 2018-05-21 15:53:51 +08:00
Alex Lam S.L
4fc39d8dad
fix corner case in collapse_vars (#3139) 2018-05-19 05:45:14 +08:00
Alex Lam S.L
1a0d6edc81
remove colors dependency (#3133) 2018-05-13 07:50:02 +08:00
Alex Lam S.L
7b59b2f5b2
replace mocha dependency (#3131) 2018-05-11 20:15:34 +08:00
Alex Lam S.L
7bc7704edf
fix corner case in reduce_vars (#3129) 2018-05-10 18:45:20 +08:00
Alex Lam S.L
14e712ee80
fix corner case in call binding (#3128) 
fixes #3127
 2018-05-10 06:16:35 +08:00
Alex Lam S.L
df8a99439a
fix various corner cases (#3126) 
- augment ufuzz/reminify test options

fixes #3125
 2018-05-07 07:36:25 +08:00
Alex Lam S.L
6b91d12ec3
fix corner case in reduce_vars (#3124) 2018-05-06 16:42:35 +08:00
Alex Lam S.L
f37b91879f
fix various corner cases (#3123) 2018-05-05 13:17:50 +08:00
Alex Lam S.L
c4cebb4b01
fix reduce_vars on nested invocations (#3118) 2018-05-04 06:05:38 +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
fc0f168a0c
better fix for #3113 (#3115) 2018-05-03 15:51:51 +08:00
Alex Lam S.L
a0ca595c2c
fix TreeWalker scan order (#3114) 
fixes #3113
 2018-05-03 00:27:45 +08:00
Alex Lam S.L
1a314e9f60
improve reduce_vars (#3112) 
fixes #3110
 2018-05-02 15:11:45 +08:00
Alex Lam S.L
22cea023d1
improve numeral compression (#3108) 2018-04-28 02:47:49 +08:00
Alex Lam S.L
70d4477e05
workaround vm context issue in node-chakracore (#3106) 2018-04-27 07:40:34 +08:00
Alex Lam S.L
69fc7ca8da
workaround test failures in Node.js 10 (#3102) 2018-04-26 17:44:37 +08:00
Alex Lam S.L
0a79496e0a
workaround stack overflow in ChakraCore (#3101) 2018-04-26 15:02:17 +08:00
Alex Lam S.L
9e87edfc2e
better fix for #2506 (#3099) 2018-04-25 04:46:07 +08:00
Alex Lam S.L
27211cf2d5
handle RHS side-effects in collapse_vars (#3097) 
fixes #3096
 2018-04-24 20:31:50 +08:00
Alex Lam S.L
b5ce199711
improve max_line_len (#3095) 
fixes #304
 2018-04-24 15:19:45 +08:00
Alex Lam S.L
d83c6490ab
fix corner case in strip_func_ids() (#3090) 2018-04-19 04:51:42 +08:00
Alex Lam S.L
6a916523d4
fix inline of catch-scoped variables (#3077) 
fixes #3076
 2018-04-11 15:44:43 +08:00
Alex Lam S.L
ba7069d52b
suppress hoist_props for embedded assignments (#3074) 2018-04-11 05:19:16 +08:00
Alex Lam S.L
4dd7d0e39b
extend hoist_props (#3073) 
- handle `AST_Assign` the same way as `AST_VarDef`
- inject `AST_Var` as succeeding statement

fixes #3071
 2018-04-11 02:48:15 +08:00
Alex Lam S.L
90199d0a96
extend join_vars on object assignments (#3072) 2018-04-11 01:35:42 +08:00
Alex Lam S.L
b82fd0ad41
handle flow control in loops with reduce_vars (#3069) 
fixes #3068
 2018-04-10 06:51:03 +08:00
Alex Lam S.L
183da16896
handle pure_funcs under inline & reduce_vars correctly (#3066) 
fixes #3065
 2018-04-10 02:46:38 +08:00
Alex Lam S.L
db49daf365
mangle Object.defineProperty() (#3059) 
fixes #869
 2018-04-06 17:10:36 +08:00
Alex Lam S.L
923deeff35
support inline source map from multiple files (#3058) 
fixes #145
 2018-04-06 16:04:15 +08:00
Alex Lam S.L
0b62a28b47
improve usability of includeSources (#3057) 
Exclude source contents from input source map if `includeSources=false`

fixes #3041
 2018-04-06 13:32:26 +08:00
Alex Lam S.L
44116c6d2b
fix AST corruption during inline of simple return (#3056) 
fixes #3054
 2018-04-06 05:39:07 +08:00
Alex Lam S.L
b5bab254ce
speed up has_parens() (take 2) (#3052) 
fixes #3050
 2018-04-05 04:12:04 +08:00
Alex Lam S.L
e67553fa55
fix tree traversal on AST_Do (#3047) 
fixes #3046
 2018-04-02 22:31:23 +08:00
b-fuze
8adfc29f91 Don't load source map until the JS source is fully received (#3040) 2018-03-31 20:26:40 +09:00
Alex Lam S.L
02f47e1713
give sensible error against invalid input source map (#3044) 2018-03-31 18:48:20 +09:00
Alex Lam S.L
07f64d4050
fix escape analysis on AST_New (#3043) 
fixes #3042
 2018-03-31 15:03:46 +09:00
Alex Lam S.L
fa3250199a
mangle unused nested AST_SymbolCatch correctly (#3038) 
fixes #3035
 2018-03-30 16:23:09 +09:00
Alex Lam S.L
06b9894c19
handle modifications to this correctly (#3036) 
fixes #3032
 2018-03-30 15:07:36 +09:00
Alex Lam S.L
9f9db504d7
improve test for #3023 (#3031) 2018-03-29 23:36:40 +09:00
Alex Lam S.L
82ae95c334
improve source map granularity (#3030) 
fixes #3023
 2018-03-29 14:47:55 +09:00
Fábio Santos
9a5e2052c4 fix extra regex slash when going through mozilla AST I/O (#3025) 
This relates to #1929, but in the context of mozilla AST input/output.
 2018-03-27 03:22:01 +09:00
Alex Lam S.L
12985d86c2
fix corner case in hoist_props (#3022) 
fixes #3021
 2018-03-23 07:27:35 +08:00
Alex Lam S.L
49bfc6b555
improve performance (#3020) 
- replace `find_if()` with `all()` wherever possible
- move ESTree-specific logic out of `figure_out_scope()`
 2018-03-23 03:43:52 +08:00
Alex Lam S.L
d1c6bb8c7c
fix nested inline within loop (#3019) 
fixes #3018
 2018-03-23 02:31:59 +08:00
Alex Lam S.L
5c169615a8
fix corner case in inline (#3017) 
fixes #3016
 2018-03-22 23:46:26 +08:00
Alex Lam S.L
ccf0e2ef4f
extend fuzzy RHS folding (#3006) 
- `a = []; if (1) x();` => `if (a = []) x();`
 2018-03-17 03:10:21 +08:00
Alex Lam S.L
20ca0f5906
improve truthy compression (#3009) 2018-03-16 06:12:59 +08:00
Alex Lam S.L
b29d435bb5
refactor brackets to braces (#3005) 2018-03-15 15:46:45 +08:00
Alex Lam S.L
188c39e8d5
retain comments within brackets (#2999) 
fixes #2998
 2018-03-13 18:44:21 +08:00
Alex Lam S.L
5429234138
preserve non-constant value assignments with modifications (#2997) 
fixes #2995
 2018-03-13 17:35:34 +08:00
Alex Lam S.L
b9f72a4a81
handle case correctly under reduce_vars (#2993) 
fixes #2992
 2018-03-11 15:54:43 +08:00
Alex Lam S.L
fc6ebd04a5
preserve case when inline_script (#2991) 
fixes #2989
 2018-03-11 05:11:12 +08:00
Alex Lam S.L
10b3752b1e
fix mangle of AST_SymbolLambda under ie8 (#2978) 
fixes #2976
 2018-03-07 17:20:38 +08:00
Alex Lam S.L
fe51a91395
handle negated constants correctly in collapse_vars (#2975) 
fixes #2974
 2018-03-06 00:45:58 +08:00
Alex Lam S.L
798fc21530
improve test/run-test.js performance (#2971) 
- allow reuse of contextified sandbox
- minimise bottleneck from `vm.createContext()`
 2018-03-04 04:50:00 +08:00
Alex Lam S.L
a75a046abb
compress arguments[index] (#2967) 
- always replace with existing parameter
- only introduce new parameter if `keep_fargs` is disabled
 2018-03-02 11:22:09 +08:00
Alex Lam S.L
38f2b4579f
fix value reference caching in evaluate (#2969) 
fixes #2968
 2018-03-02 04:04:29 +08:00
Alex Lam S.L
56e2a369d0
enhance conditionals (#2966) 
- `x ? (y, w) : (z, w)` => `x ? y : z, w`
 2018-02-28 23:34:48 +08:00
Alex Lam S.L
0daa199fa8
migrate safe transformations out of unsafe_comps (#2962) 
fixes #2959
 2018-02-28 22:02:24 +08:00
Alex Lam S.L
73e98dcda4
drop side_effects-free return values (#2965) 2018-02-28 19:59:19 +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
ace5811691
drop lone "use strict" in function body (#2963) 
fixes #2961
 2018-02-26 15:22:52 +08:00
Dan
ba7bad0dbd show benchmark subtotal (#2960) 
At the end of the benchmark, sums of the input, output and
gzip values are shown, such as:

    Subtotal

    Original: 7785102 bytes
    Uglified: 2283862 bytes
    GZipped:  662354 bytes
 2018-02-26 11:46:26 +08:00
Alex Lam S.L
b8b2ac5230
improve fix for #2954 (#2958) 2018-02-26 03:14:22 +08:00
Alex Lam S.L
ea2359381b
fix collapse_vars on nested exception (#2955) 
fixes #2954
 2018-02-25 15:39:00 +08:00
Alex Lam S.L
52de64cf16
deduplicate parenthesis around object and function literals (#2953) 2018-02-25 02:14:33 +08:00
Alex Lam S.L
455790202a
minor clean-ups (#2951) 2018-02-24 02:24:47 +08:00
Alex Lam S.L
f40f5eb228
improve mangle (#2948) 2018-02-23 23:51:49 +08:00
Alex Lam S.L
29a71d3aae
more tests for #2938 (#2940) 2018-02-21 04:19:42 +08:00
Alex Lam S.L
39a907bde3
workaround pure_getters=true when dropping unused assignments (#2939) 
fixes #2938
 2018-02-20 17:38:40 +08:00
Alex Lam S.L
70474310f3
improve unsafe evaluate of function (#2936) 
Miscellaneous
- simplify `run_code()` hack
 2018-02-19 18:47:02 +08:00
Alex Lam S.L
b5f0f4f3a1
reduce false positives from object literals (#2935) 2018-02-19 06:21:07 +08:00
Alex Lam S.L
2905fd625a
reduce false positives from labels (#2934) 2018-02-19 03:55:33 +08:00
Alex Lam S.L
4facd94029
reduce false positives from noop (#2933) 2018-02-19 01:15:05 +08:00
Alex Lam S.L
4b5993ff15
fix crash in may_throw() (#2932) 
fixes #2931
 2018-02-18 21:51:27 +08:00
Alex Lam S.L
2351a672ea
fix dead_code on exceptional return (#2930) 
fixes #2929
 2018-02-18 04:36:00 +08:00
Alex Lam S.L
4a528c469c
reduce false positives from function.toString() (#2928) 2018-02-18 02:13:26 +08:00
Alex Lam S.L
82d1ef0242
fix unsafe evaluate of function property (#2927) 
fixes #2926
 2018-02-17 21:33:36 +08:00
Alex Lam S.L
7fdd2082a6
drop unused "class" definition IIFEs (#2923) 
fixes #805
 2018-02-17 05:11:31 +08:00
Alex Lam S.L
e529f54e90
reduce function-related false positives (#2925) 2018-02-17 04:35:03 +08:00
Alex Lam S.L
d626e9bf19
improve inline efficiency (#2924) 2018-02-17 02:37:13 +08:00
Alex Lam S.L
a2a9459684
fix unsafe evaluate of AST_Function (#2920) 
fixes #2919
 2018-02-16 17:21:46 +08:00
Alex Lam S.L
d316fb139d
fix unsafe evaluate on type-converting operators (#2917) 
fixes #2916
 2018-02-14 16:48:47 +08:00
Alex Lam S.L
83d8aa8b12
fix collapse_vars within loops (#2915) 
fixes #2914
 2018-02-14 05:15:52 +08:00
Alex Lam S.L
4f1c12b6fd
report options upon reminify input error (#2911) 2018-02-13 07:29:39 +08:00
Alex Lam S.L
d8e0e34354
collapse within unary expressions (#2910) 2018-02-13 07:10:37 +08:00
Alex Lam S.L
0c4f315c02
fix corner case in collapse_vars (#2909) 
fixes #2908
 2018-02-13 01:41:22 +08:00
Alex Lam S.L
0809699bdc
simplify do-while into for (#2907) 
fixes #2904
 2018-02-12 23:28:28 +08:00
Alex Lam S.L
2088e1c19d
fix AST corruption due to collapse_vars & inline (#2899) 
fixes #2898
 2018-02-09 06:54:37 +08:00
Alex Lam S.L
bf1d47180c
fix join_vars on property accessors (#2895) 
fixes #2893
 2018-02-09 01:52:39 +08:00
Alex Lam S.L
d66d86f20b
account for exceptions in AST_Assign.left (#2892) 
fixes #2891
 2018-02-08 03:31:51 +08:00
Alex Lam S.L
d69d8007d6
evaluate to{Low,Upp}erCase() under unsafe (#2886) 2018-02-06 15:57:15 +08:00
Dan
9637f51b68 change undefined == x to null == x (#2882) 
fixes #2871
 2018-02-05 15:00:23 +08:00
Alex Lam S.L
3026bd8975
improve exceptional flow compression by collapse_vars (#2880) 2018-02-04 04:18:22 +08:00
Alex Lam S.L
78a44d5ab0
maintain order between side-effects and externally observable assignments (#2879) 
fixes #2878
 2018-02-04 03:58:49 +08:00
Alex Lam S.L
7e13c0db40
handle break & continue in collapse_vars (#2875) 
fixes #2873
 2018-02-03 07:58:43 +08:00
Alex Lam S.L
e6a2e9e4d0
allow collapse_vars across conditional branches (#2867) 2018-02-03 02:44:40 +08:00
Alex Lam S.L
e773f03927
fix assignment logic in reduce_vars (#2872) 
fixes #2869
 2018-02-03 01:33:09 +08:00
Alex Lam S.L
b16380d669
fix missing corner case in #2855 (#2868) 2018-02-02 18:08:56 +08:00
Alex Lam S.L
3cc1527f00
always test for rename (#2865) 2018-02-01 21:42:55 +08:00
Alex Lam S.L
c3a002ff97
account for side-effects in comparisons of null & undefined (#2863) 2018-02-01 19:15:17 +08:00
Alex Lam S.L
fad6766a90
simplify comparisons with undefined & null (#2862) 
fixes #2857
 2018-02-01 16:50:54 +08:00
Alex Lam S.L
aa664dea0a
avoid evaluate of compound assignment after dead_code transform (#2861) 
fixes #2860
 2018-02-01 16:18:29 +08:00
Alex Lam S.L
102f994b9d
account for declaration assignment in collapse_vars (#2859) 
fixes #2858
 2018-02-01 15:09:53 +08:00
Alex Lam S.L
2a4c68be4f
relax collapse_vars on AST_Exit (#2855) 
First introduced in #1862 to stop assignments to migrate beyond `return` or `throw`. Since then `collapse_vars` has been improved to handle various side-effect-related corner cases.
 2018-01-31 23:49:59 +08:00
Alex Lam S.L
541e6011af
improve symbol replacement heuristic (#2851) 2018-01-29 17:41:15 +08:00
Alex Lam S.L
6fa3fbeae8
compress chained compound assignments (#2850) 2018-01-29 15:13:25 +08:00
Alex Lam S.L
193612ac67
fix accounting after conversion to assignment (#2847) 
Missing reference to `AST_SymbolRef` created by `unused` causes `collapse_vars` to misbehave.

fixes #2846
 2018-01-26 14:21:11 +08:00
Alex Lam S.L
ec4202590d
drop assignments to constant expressions only (#2839) 
fixes #2838
 2018-01-23 02:49:54 +08:00
Alex Lam S.L
5e2cd07d6f
handle duplicate function declarations correctly (#2837) 
fixes #2836
 2018-01-23 01:28:09 +08:00
Alex Lam S.L
e2dc9cf091
fix unsafe evaluate of AST_Array (#2825) 
fixes #2822
 2018-01-21 01:39:44 +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
3e7873217c
improve unused on built-in functions (#2817) 2018-01-19 20:41:57 +08:00
Alex Lam S.L
e21bab7ce6
avoid duplicate property names in object literals under "use strict" (#2818) 
fixes #2816
 2018-01-19 20:13:50 +08:00
Alex Lam S.L
ac9a168fba fix & improve test/ufuzz.js (#2815) 
- use correct `options` when testing `rename`
- mask arbitrarily assigned function IDs to reduce rate of false positives
 2018-01-19 16:51:59 +08:00
Alex Lam S.L
81b64549ce
fix time-out for respawned test/ufuzz.js (#2814) 2018-01-19 06:11:19 +08:00
Alex Lam S.L
082e004b87
compress undefined property names (#2811) 
- enforce property names as string
- handle `void 0` as `undefined` in `hoist_props` & `reduce_vars`
 2018-01-19 00:36:30 +08:00
kzc
983e69128b fix join_vars property assignment for negative array index (#2810) 
fixes #2790
 2018-01-18 21:52:54 +08:00
Alex Lam S.L
b335912e86
enhance test/ufuzz.js (#2808) 
- standalone test for `rename`
- handle `keep_fargs` & `rename` upon failure
 2018-01-18 14:08:05 +08:00
Alex Lam S.L
07e4b64f3a
fix AST_Scope.clone() (#2803) 
fixes #2799
 2018-01-17 21:33:13 +08:00
Alex Lam S.L
d3ce2bc9e7
suppress unsafe_proto for LHS expressions (#2804) 2018-01-17 20:41:51 +08:00
Alex Lam S.L
cff3bf4914
configure rename with CLI (#2802) 2018-01-17 15:12:22 +08:00
Alex Lam S.L
79cfac77bd
extend join_vars & sequences (#2798) 2018-01-17 13:58:27 +08:00
Alex Lam S.L
224c14d49d
improve mocha tests (#2797) 
- workaround sporadic delays from Travis CI
 2018-01-16 17:51:25 +08:00
Alex Lam S.L
7857354d85
improve test/travis-ufuzz.js (#2795) 
- print usage
- support concurrent jobs
- improve instance utilisation
- resume after V8 self-destruct
 2018-01-16 17:33:21 +08:00
Alex Lam S.L
b4aef753e7
general improvements around AST_ForIn (#2796) 
- compress using `collapse_vars`
- remove unused `name`
- simplify `loop_body`
 2018-01-16 17:03:12 +08:00
Alex Lam S.L
ec7cd1dcf7
handle VM failure gracefully (#2791) 2018-01-15 23:41:39 +08:00
Alex Lam S.L
7def684730
improve test/travis-ufuzz.js (#2789) 
- wait for instance to boot
- run on forked repositories
- workaround `request_limit_reached`
 2018-01-15 19:18:21 +08:00
Alex Lam S.L
10f961c27b
enhance collapse_vars (#2788) 2018-01-15 18:47:23 +08:00
Alex Lam S.L
cbbe6fad60
avoid double counting within single-use functions (#2785) 
fixes #2783
 2018-01-15 16:42:15 +08:00
Alex Lam S.L
f96929c031
improve test/travis-ufuzz.js (#2786) 
- use more RAM
- show progress in console
- report failure as job status
 2018-01-15 15:08:35 +08:00
Alex Lam S.L
2b6657e967 run test/ufuzz.js when Travis CI is idle (#2784) 2018-01-15 08:52:11 +08:00
Alex Lam S.L
62a66dfff4
fix & extend join_vars for object assigments (#2781) 2018-01-14 17:11:31 +08:00
Alex Lam S.L
e49416e4aa
fix reduce_vars on AST_Accessor (#2776) 
fixes #2774
 2018-01-13 02:46:14 +08:00
Alex Lam S.L
b757450cd8
fix nested unused assignments (#2769) 
fixes #2768
 2018-01-11 23:13:44 +08:00
Alex Lam S.L
23ec484806
fix corner case in #2763 (#2766) 2018-01-11 21:18:08 +08:00
Alex Lam S.L
f1e1bb419a
join object assignments (#2763) 2018-01-11 17:08:21 +08:00
Alex Lam S.L
09269be974
enhance conditionals (#2758) 
`x ? y || z : z` --> `x && y || z`
 2018-01-10 16:59:57 +08:00
Alex Lam S.L
bf832cde16
improve synergy between compress and rename (#2755) 2018-01-09 17:55:41 +08:00
Alex Lam S.L
2972d58dbb
patch variable declaractions extracted within catch (#2753) 
fixes #2749
 2018-01-09 13:54:35 +08:00
Alex Lam S.L
2e22d38a02
improve rename reproducibility (#2754) 
fixes #2752
 2018-01-09 13:53:05 +08:00
Alex Lam S.L
ce27bcd69a
compress loops with immediate break (#2746) 
fixes #2740
 2018-01-08 14:30:18 +08:00
Alex Lam S.L
9809567dfc
improve process.exit() workaround (#2741) 
- use public API
- fix issue with Node.js 0.10 on WIndows
 2018-01-07 17:53:50 +08:00
Alex Lam S.L
1ee8be8d91
fix recursive function inline (#2738) 
fixes #2737
 2018-01-07 15:31:24 +08:00
Alex Lam S.L
659c8a7632
handle trailing line comments correctly (#2736) 
fixes #2734
 2018-01-06 21:05:21 +08:00
Alex Lam S.L
3564b4f20d
compress RegExp() in unsafe (#2735) 2018-01-06 21:04:47 +08:00
Alex Lam S.L
3505a3604a
enhance unsafe_proto (#2733) 2018-01-06 06:16:51 +08:00
kzc
9b1bc6c014 ufuzz: add strings "a", "b", "c" to VALUES (#2732) 2018-01-06 05:54:53 +08:00
Alex Lam S.L
9f23185f2b
fix corner case with arguments as function name (#2729) 
fixes #2728
 2018-01-05 22:21:18 +08:00
Alex Lam S.L
b82feb9302
improve if_return (#2727) 2018-01-05 20:24:30 +08:00
Alex Lam S.L
7f2a591c7e
warn on deprecated features (#2726) 
- `function.arguments`
- `function.callers`

fixes #2719
 2018-01-05 19:36:02 +08:00
Alex Lam S.L
afbcebddf6
fix mangle name collision across files (#2722) 2018-01-05 05:08:09 +08:00
Alex Lam S.L
484e484571
fix corner case in inline (#2720) 2018-01-04 23:38:37 +08:00
Alex Lam S.L
6f3f21233f
reminify tests upon expect_stdout (#2716) 2018-01-04 20:13:05 +08:00
Alex Lam S.L
a6873a3859
forbid block-scoped AST_Defun in strict mode (#2718) 2018-01-04 18:45:51 +08:00
Alex Lam S.L
7a6d452b54
preserve constant modification under strict mode (#2717) 2018-01-04 15:53:53 +08:00
Alex Lam S.L
9b58b54e2d
extend inline (#2714) 
- compress `function` with variables within loops
- restrict to `AST_Var` for better compatibility with ES6+
 2018-01-04 12:58:40 +08:00
Alex Lam S.L
c598a12af9
apply collapse_vars to loop conditions (#2712) 2018-01-04 03:18:28 +08:00
Alex Lam S.L
cfe3a98ce5
drop unused assignment based on reduce_vars (#2709) 2018-01-04 01:03:33 +08:00
Alex Lam S.L
14778e049b
fix reduce_vars on AST_Defun (#2708) 2018-01-03 17:18:38 +08:00
Alex Lam S.L
446fb0198b
extend __PURE__ to AST_New (#2706) 
fixes #2705
 2018-01-03 04:48:07 +08:00
Alex Lam S.L
7d3cddf9d6
inline functions with AST_Var (#2688) 2018-01-03 01:54:44 +08:00
Alex Lam S.L
6dead95eb3
enhance collapse_vars (#2704) 2018-01-02 18:42:15 +08:00
Alex Lam S.L
cc931b3ad8
enhance if_return (#2703) 2018-01-02 15:09:51 +08:00
Alex Lam S.L
d838b4b52e
reset argument value within loop after inline (#2699) 2018-01-02 01:24:53 +08:00
Alex Lam S.L
2f3bddbaca
scan within IIFEs of assigned values (#2702) 
fixes #2701
 2018-01-02 01:24:23 +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
da82fa59a7
fix inline on duplicate argument names (#2698) 2017-12-31 20:59:58 +08:00
Alex Lam S.L
333792352e
reduce hoisting declarations (#2687) 2017-12-31 16:15:00 +08:00
Alex Lam S.L
ed7a0a454e
fix dead_code on escaped return assignment (#2693) 
fixes #2692
 2017-12-30 15:20:25 +08:00
Alex Lam S.L
b95e3338d9
fix pure_getters on AST_Binary (#2681) 
fixes #2678
 2017-12-28 17:01:01 +08:00
Alex Lam S.L
e40a0ee9c6
improve assignment variations (#2671) 2017-12-28 15:36:55 +08:00
Alex Lam S.L
cb62bd98d3
fix function inlining within loops (#2675) 
fixes #2663
 2017-12-28 02:53:14 +08:00
Alex Lam S.L
f30790b11b
fix dead_code on return assignments (#2668) 
fixes #2666
 2017-12-27 07:40:34 +08:00
Alex Lam S.L
5205dbcbf4
retain recursive function names (#2667) 
fixes #2665
 2017-12-27 07:00:12 +08:00
Alex Lam S.L
3ff625de7e
fix bugs on substituted AST_Defun (#2661) 
fixes #2660
 2017-12-27 05:31:37 +08:00
Alex Lam S.L
4832bc5d88
replace single-use recursive functions (#2659) 
fixes #2628
 2017-12-26 21:25:35 +08:00
Alex Lam S.L
7f342cb3e3
suppress inline within substituted AST_Scope (#2658) 
fixes #2657
 2017-12-26 18:56:59 +08:00
Alex Lam S.L
05e7d34ed4
improve unused over duplicate variable names (#2656) 2017-12-26 18:29:28 +08:00
Alex Lam S.L
0fe259e9c5
parse LF & comment correctly (#2653) 
fixes #2652
 2017-12-26 01:38:01 +08:00
Alex Lam S.L
1476c78b53
add html-minifier to benchmarks (#2646) 2017-12-25 03:07:46 +08:00
Alex Lam S.L
cb6a92892f
fix infinite loop during inline (#2645) 
fixes #2644
 2017-12-25 01:57:11 +08:00
Alex Lam S.L
efffb81735
fix comments output & improve /*@__PURE__*/ 
- fix whitespace around comments
- fix comment parsing around parentheses
- consider parentheses when parsing `/*@__PURE__*/`
- remove all `/*@__PURE__*/` on output

fixes #2638
 2017-12-24 12:38:45 +08:00
Alex Lam S.L
202f90ef8f
fix corner cases with collapse_vars, inline & reduce_vars (#2637) 
fixes #2630
 2017-12-24 01:24:12 +08:00
Alex Lam S.L
c07ea17c01
fix escape analysis on AST_PropAccess (#2636) 2017-12-24 00:36:46 +08:00
Alex Lam S.L
edb4e3bd52
make comments output more robust (#2633) 
- improve handling of comments right after `return`
- retain comments after `OutputStream`
- preserve trailing comments
- fix handling of new line before comments
- handle comments around parentheses

fixes #88
fixes #112
fixes #218
fixes #372
fixes #2629
 2017-12-22 04:59:54 +08:00
Alex Lam S.L
4113609dd4
extend test/ufuzz.js to inline & reduce_funcs (#2620) 
- forward call `fN()`
- allow forward call functions to be single-use
- avoid generating `AST_Defun` within blocks
 2017-12-20 23:52:18 +08:00
Alex Lam S.L
86ae5881b7
disable hoist_funs by default (#2626) 2017-12-20 17:05:40 +08:00
Alex Lam S.L
fac003c64f
avoid inline of function with special argument names (#2625) 2017-12-20 02:48:04 +08:00
Alex Lam S.L
2273655c17
fix inline after single-use reduce_vars (#2623) 2017-12-19 22:19:33 +08:00
Alex Lam S.L
032f096b7f
add test for #2613 (#2618) 2017-12-19 05:22:05 +08:00
Alex Lam S.L
4b334edf49
handle global constant collision with local variable after inline (#2617) 
fixes #2616
 2017-12-19 03:05:30 +08:00
Alex Lam S.L
8ddcbc39e6
compress apply() & call() of function (#2613) 
- `fn.apply(a, [ ... ])` => `fn.call(a, ...)`
- `fn.call(a, ... )` => `a, fn(...)`

where `fn` can be `function` literal or symbol reference linked through `reduce_vars`
 2017-12-18 16:23:39 +08:00
Alex Lam S.L
0b0eac1d5d
drop property assignment to constants (#2612) 2017-12-18 12:07:53 +08:00
Alex Lam S.L
b29fc8b27c
improve transversal efficiency in collapse_vars (#2611) 
fixes #2603
 2017-12-18 03:00:05 +08:00
Alex Lam S.L
21794c9b8d
account for catch variable when inline (#2605) 
fixes #2604
 2017-12-16 15:21:09 +08:00
Alex Lam S.L
6c686ce593
fix nested inline (#2602) 
fixes #2601
 2017-12-16 02:16:35 +08:00
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
kzc
d18979bb23 improve dead_code tests (#2589) 
for #2588
 2017-12-14 12:12:06 +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
ddf96cfda2
avoid Function.prototype pollution by test/sandbox.js (#2581) 2017-12-12 05:02:01 +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
93f3b2b114
escape consecutive unpaired surrogates (#2576) 
fixes #2569
 2017-12-11 01:15:44 +08:00
Alex Lam S.L
bf000beae7
rename tests (#2575) 2017-12-11 00:24:54 +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
85c56adbd1
more tests for #2535 (#2551) 2017-12-02 02:26:56 +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
c58d3936a3
fix corner case in call binding (#2541) 2017-12-01 03:18:20 +08:00
Alex Lam S.L
18302bf8e9
backport test from #2526 (#2534) 2017-11-29 13:32:00 +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
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
ae28a24c7f
fix cross-scope inlining of AST_Functions (#2486) 
fixes #2485
 2017-11-16 10:04:30 +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
25a18883f5
tweak #2424 (#2432) 2017-11-05 12:49:14 +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
71e61153b1
improve variations on call arguments for ufuzz (#2424) 2017-11-04 16:29:42 +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
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
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
eba0f93bc0 more tests for #2351 (#2357) 2017-10-12 02:58:25 +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
c615a1e80a fix gzip stream in test/benchmark.js (#2228) 2017-07-12 02:55:57 +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
4956ad311b benchmark gzipped output (#2220) 2017-07-09 01:44:59 +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
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
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
285401ced8 more tests for #2158 (#2160) 2017-06-25 14:21:48 +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
dc6bcaa18e synchronise mangle.properties for minify() & test/compress (#2151) 2017-06-23 15:53:13 +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
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
43697958f3 avoid intermittent test time-out failures (#2100) 2017-06-15 04:47:57 +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
0a1e523cd5 fix parsing of expect_stdout (#2096) 
fixes #2095
 2017-06-15 01:00:03 +08:00
Alex Lam S.L
41beae4dd7 cache web assets between CI runs (#2089) 
- skip `test/jetstream.js` for `node@0.12`
 2017-06-14 11:53:10 +08:00
Ziad El Khoury Hanna
82db9188ac fix CLI parsing of --source-map content (#2088) 
fixes #2082
 2017-06-13 16:30:46 +08:00
Alex Lam S.L
3dc9e140e4 add Node.js 8 to Travis CI (#2086) 
- explicitly terminate `test/jetstream.js` upon completion
- log verbose output from `test/benchmark.js` & `test/jetstream.js`
- remove obsolete workaround for Travis CI
 2017-06-13 06:21:16 +08:00
Alex Lam S.L
fed0096556 allow expect_stdout to specify Error (#2087) 2017-06-13 04:57:26 +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
5ef7cb372a suppress false positives for-in loops (#2080) 
fixes #2079
 2017-06-10 13:55:17 +08:00
Alex Lam S.L
4ad7b1dae4 fix portability of sandbox.run_code() on Node.js 0.1x (#2078) 2017-06-10 01:08:58 +08:00
Alex Lam S.L
9186859cb7 fix non-string parameters (#2076) 
`Stream.write()` is not as versatile as `console.log()`
 2017-06-10 00:11:40 +08:00
Alex Lam S.L
47c0713747 report test/ufuzz.js failures in process.stderr (#2074) 2017-06-09 15:56:28 +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
f2af093402 fix CLI output corruption (#2061) 
Using `console.error()` & `console.log()` result in inconsistent formatting across Node.js versions.

Avoid this issue by directly writing to `process.stderr` & `process.stdout` instead.

Miscellaneous
- prettify invalid option listing
 2017-06-07 04:25:32 +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
b0eab71470 implement test/jetstream.js --debug (#2058) 2017-06-06 19:28:12 +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
84634da4b5 add tests for AST_SymbolAccessor (#2049) 2017-06-03 16:08:10 +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
fec14379f6 improve CLI usability (#2016) 
Report supported options upon invalid option syntax.

fixes #1883
 2017-05-28 04:09:40 +08:00
Alex Lam S.L
79131cd647 extend node_version range on applicable tests (#2015) 2017-05-27 22:18:28 +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
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
efcf167e5e make expect_stdout node version specific (#1963) 
... via semver string on `node_version` label.
 2017-05-18 11:28:35 +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
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
41996be86f extend test timeout 
Travis has gone a lot slower recently, and most test failures are due to time-out on this particular test.
 2017-05-10 02:43:12 +08:00
Alex Lam S.L
c14e280585 print error stack in CLI (#1890) 2017-05-09 16:36:44 +08:00
Alex Lam S.L
8c7c107765 update minify() usage in test/ufuzz.js (#1888) 
fixes #1887
 2017-05-09 15:58:46 +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
4f8ca4626e deprecate low level API (#1877) 
fixes #1872
 2017-05-08 03:24:42 +08:00
Alex Lam S.L
98cf95e5b5 fix test for #1865 (#1873) 2017-05-07 02:56:02 +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
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
bffdc8dca8 update test/benchmark.js resources (#1864) 2017-05-02 19:48:12 +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
76d19b60ad fix fuzzer on this (#1842) 
- forbid redeclaration of `this`
- suppress probability for `this` within nested functions
 2017-04-24 03:15:03 +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
9a978843f5 enhance test/ufuzz.js (#1803) 
- `-E` to report test cases with runtime errors
- favor returning expressions rather than empty return
- emit a newline upon fuzzer completion to not erase the iteration count

closes #1800
 2017-04-09 01:36:38 +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
a1532eb076 extend ufuzz generator (#1783) 
- property access
- property assignment
- allow bare expression within try-block
- normalise `Error` in `console.log()`
- generate more unary expressions
- add parenthesis to enforce precedence
- adjust variable reuse/creation
- add parameters to function declaration & expression
- add return expression
- add trivial arguments to function call
 2017-04-07 18:47:30 +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
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
4b90dc1fdb remove --mangle-props from fuzzing (#1777) 
The inherently unsafe nature makes this feature unsuitable to be tested this way.

fixes #1774
 2017-04-04 16:24:16 +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
a400741868 workaround Node.js bugs (#1775) 
Wrap test code in IIFE before passing to `vm`

fixes #1768
fixes #1771
 2017-04-03 18:56:11 +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
1f1fccc45d extend test/ufuzz.js (#1769) 
New expressions:
- property access
- array literal
- object literal

Miscellaneous:
- reduce execution timeout
- test `toplevel` and `mangleProperties`
 2017-04-03 04:00:33 +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
c076e7b60d speed up fuzzer code generation (#1757) 
- only output one top-level function or statement block
- reduce `rng()` granularity from 2^32 to 65536
- fix overflow in `rng()`
- track `canThrow` during `typeof` creation
 2017-04-02 05:11:29 +08:00
Alex Lam S.L
4a55bb0be5 minor tweaks to test/ufuzz.js (#1756) 
- count iterations from `1` instead of `0`
- remove `unsafe` from default set of `minify()` tests
- improve usability of help
 2017-04-02 03:17:01 +08:00
Alex Lam S.L
28ecea50a6 upgrade fuzzer (#1754) 
- configurable set of `minify()` options
- test and report suspects upon failure
- continue after failure if infinite iterations is specified
 2017-04-02 02:10:50 +08:00
kzc
9a311705f5 fuzz regexp literals, more constant numbers, typeof expression (#1755) 2017-04-02 02:08:46 +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
87f6e1b091 minor tweaks to fuzzer (#1751) 
- remove `let` as variable name
- employ `crypto.randomBytes()`
 2017-04-01 17:09:52 +08:00
Alex Lam S.L
c934fc8142 implement test/sandbox.js (#1749) 
- `test/run-tests.js` and `test/ufuzz.js` now shares the same `run_code()` and `same_stdout()`
- re-enable fuzzer to generate top-level `NaN`, `Infinity` & `undefined`
- attempt to show beautified output only when `run_code()` output is preserved
 2017-04-01 05:47:11 +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
Peter van der Zee
e6b76a4879 Massive extension of the fuzzer (#1697) 
Fix bug where a `throw` was generated without expression

Reenable try/catch/finally and fix them up

Skip serialization errors

Allow function decl in other funcs but not in blocks etc

Rename function to be more appropriate

Fix global functions not getting certain names

Make the canaries more likely to appear as expressions

Add a silly rounding edge case

Add a new canary, `c`, which should only ever be incremented

Refactoring

Fix (another) iife not actually being invoked

When a statement hits recursion max return an expression instead of `;`

When a expression hits recursion max also inc `c`

Generate global code as well as function code

Also fixes some argument juggling related bugs.
No longer reduces the recursion max when generating sub functions.
Generates a function arg.

Add used names to var name pool while in that scope

This is a little wonky, possibly a hack, but since it's synchronous code I think it's alright to do this. The alternative is to slice the varnames array and juggle them through almost all the generator functions and there are various reasons why this patch is a better alternative.

Minify generated code, not beautified code. Prevents beautifier bias.

Prevent unnecessary duplication

Remove serialization protection because I think it got handled elsewhere

Abstract toplevel code generation

Add example line of running test case

Add poor man options parser, and some options

Reindent to 4 spaces

Lower chance of `default` generation

Comment example of testing a case and output improvement

Enable `default` clause appearing at any clause index

Removing some training wheels; dont add parens where we dont absolutely need them

Support `-s1` and `-s2` to force specific statements being generated at that recursion level

Add round number to output when failing. For stats and fun and profit.

Solidify statement depth counting. The argument juggling is real.

Renamed option to something long. -scf was ugly and probably confusing.

Fix missing arguments causing `canThrow` to be truthy, generating crashing code

Generate more binary nested expressions

Add black and white list cli options for statement generation

Allows you to explicitly require or forbid certain statements from/to being made.

```
node test/ufuzz.js --without-stmt switch,try -t 5 -r 5 -V
```

```
node test/ufuzz.js --only-stmt ifelse,expr -t 5 -r 5 -V
```

Similar granularity for expression may be added later.

There can be no comma between names; it just does a split on that arg.

Trim down the binary expression generator

Prevent scoping issues in nodejs by preventing certain names in global space

Oh this list was incomplete?

Allow bin-expr to generate assignments too. More vigilant with storing and reusing vars.

Add more global builtin names

Update wrapper code

Also patch Function valueOf
 2017-03-31 17:23:50 +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
0f910ee25c improve tests from #1726 (#1729) 2017-03-30 00:13:46 +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
ec7f37f314 remove UGLIFY_DEBUG (#1720) 
fixes #1719
 2017-03-29 01:27:24 +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
aa3f647656 ufuzz: workaround for Function.toString() v2 (#1700) 2017-03-27 21:49:08 +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
00996afd2c ufuzz: workaround function name and toString() (#1688) 
fixes #1686
 2017-03-26 18:18:44 +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
Peter van der Zee
adb0e882e9 Improve fuzzer. :) (#1665) 
@qfox	Put value constants in a global constant			74c0fb9
 @qfox	And the other string based values as well			a5033c5
 @qfox	Be more strict about parameters, allow max to be optional			9c7ce70
 @qfox	Support a `V` (capital) flag to only log out at intervals			2d822c7
 @qfox	Fewer magic variables			a6a9a7c
 @qfox	Fix decrement such that a function is created when n=1			7e4b017
 @qfox	Add more values			64e596e
 @qfox	Make `b` appear more often			d33191a
 @qfox	Add functions that contain (only..) functions			29a86e3
 @qfox	Allow the block statement to contain multiple statements			7570484
 @qfox	Make the interval count a constant			d587ad8
 @qfox	Enable mangling, disable post-processing  …			4dc8d35
 @qfox	Add more simple value that may trigger syntactic errors			8496d58
 @qfox	Add `else` to some `if` statements			a4aed65
 @qfox	Move iife to expr generator, fix missing recursion arg			e453159
 @qfox	Improve output on error where it wasnt printing the last code properly			4565a1a
 @qfox	Add switch statement to generator			ceafa76
 @qfox	Add var statement, support optional comma for expr generator			b83921b
 @qfox	Expression generator should use a simple value instead of `0` as recu…  …			9d1a5c7
 @qfox	const -> var to keep things es5...			0143099
 @qfox	Add more simple values that may trigger edge cases			5e124f1
 @qfox	Add central name generator, take special care for global functions			aeb7682
 @qfox	Add some `return` and function declaration cases to statement generator			6c9c3cc
 @qfox	Exclude switches from generator for now			91124b2

Put value constants in a global constant

And the other string based values as well

Be more strict about parameters, allow max to be optional

Support a `V` (capital) flag to only log out at intervals

Fewer magic variables

Fix decrement such that a function is created when n=1

Add more values

Make `b` appear more often

Add functions that contain (only..) functions

Allow the block statement to contain multiple statements

Make the interval count a constant

Enable mangling, disable post-processing

Mangling is kind of the whole point...

Similarly, to beautify the minified code afterwards may supress bugs so it's probably best not to beautify the code prematurely. And there's no point anyways since you won't see it most of the time and only care about the main input anyways.

Add more simple value that may trigger syntactic errors

Add `else` to some `if` statements

Move iife to expr generator, fix missing recursion arg

Improve output on error where it wasnt printing the last code properly

Add switch statement to generator

Add var statement, support optional comma for expr generator

Expression generator should use a simple value instead of `0` as recursion default

const -> var to keep things es5...

Add more simple values that may trigger edge cases

Add central name generator, take special care for global functions

Add some `return` and function declaration cases to statement generator

Exclude switches from generator for now

Enable switch generation because #1667 was merged

Add typeof generator

Add some elision tests

Add a new edge case that returns an object explicitly

Add all binary ops to try and cover more paths

Forgot four binops and added `Math` to var name pool

Harden the incremental pre/postfix tests

Improve switch generator, allow `default` to appear at any clause index

Add try/catch/finally generation

Prevent function statements being generated

Add edge case with decremental op and a group

Disable switch generation until #1679 and #1680 are solved

Only allow `default` clause as last clause for now

Tentatively enable `throw`, `break` and `continue` statements when in valid contexts
 2017-03-26 12:04:50 +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
b1abe92e1a introduce ufuzz.js (#1655) 
closes #1647
 2017-03-25 01:46:12 +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
Alex Lam S.L
701035621d fix expect_stdout (#1642) 
`compress()` may modify input ASTs

add tests for #1627 & #1640
 2017-03-24 13:19:50 +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
a00040dd93 fix a bug in simple_glob (#1632) 
- "?" should not match "/"
- other minor clean-ups
 2017-03-23 06:11:16 +08:00