JoBoEVD/UglifyJS
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338 Commits

Author SHA1 Message Date
Anthony Van de Gejuchte
13ed445607 Improve support for binding pattern 
Including improvements for parameters, variable assignment and
catch parameter.
 2016-09-05 17:48:48 +02:00
Richard van Velzen
1db50c3b16 Don't parenthesize arrow functions in parameter lists 2016-09-02 09:35:31 +02:00
kzc
25fc02743a Account for side effects in string + expr optimization 2016-09-01 09:24:56 -04:00
Richard van Velzen
7f6b5d662b Merge branch 'master' into harmony 2016-08-30 15:16:23 +02:00
kzc
0bd8053524 implement optimization: (x = 2 * x) ---> (x *= 2) 2016-08-30 08:43:02 -04:00
Anthony Van de Gejuchte
1c15d0db45 Fix quoting of properties 
- Make AST_ConciseMethod child of AST_ObjectProperty.
- Fix some typos.
 2016-08-26 15:06:24 +02:00
Richard van Velzen
45d81f881b Merge branch 'master' into harmony 2016-08-17 20:21:38 +02:00
Richard van Velzen
8430123e9d Fix negate_iife transform to return a correct tree for nested IIFEs 
Fix for #1256, partially reverts d854523783
 2016-08-17 11:55:59 +02:00
Richard van Velzen
8c7d23dfb1 Merge branch 'master' into harmony 2016-08-17 08:50:31 +02:00
kzc
d854523783 Fix negate_iife regression #1254 2016-08-17 01:29:34 -04:00
Richard van Velzen
7fa0dbdeb9 Ignore default reserved properties in compress test 2016-08-15 09:54:15 +02:00
Richard van Velzen
c644c1292d Merge branch 'master' into harmony 2016-08-15 09:09:04 +02:00
kzc
de619ae5a6 Fix --mangle-props and --mangle-props=unquoted 
Fixes: #1247

Fix --mangle-props and --name-cache inconsistency.
AST_Dot and AST_Sub properties are now mangled by --mangle-props
without regard to being used in an assignment statement.

Note: if --mangle-props is used then *all* javascript files used must
be uglified with the same mangle options.

Fix the ignore_quoted=true mangle option, also known as
`--mangle-props=unquoted`.  If a given property is quoted anywhere
it will not be mangled in any quoted or non-quoted context.
 2016-08-14 21:51:25 +02:00
kzc
86859f6d7e Additional object literal property tests 2016-08-14 21:49:43 +02:00
kzc
fb049d3a81 Fix unneeded parens around unary args in new expression. 2016-08-14 21:38:38 +02:00
Anthony Van de Gejuchte
27d3669800 Don't allow escaped surrogated identifiers + introduce ascii_identifiers 
Don't use 2 characters for surrogates in identifiers because there is
support for the \u{} syntax when escaped identifiers were introduced.

Also catch eof errors while reading identifier names

Introduce ascii_identifiers:

By setting ascii_identifiers to undefined (default value),
ascii_identifiers will print identifiers using the same setting as
ascii_only within the limits of the ecmascript 6 grammar.

ascii_identifiers accept true and false, allowing identifiers to be
printed under different settings than strings with the ascii_only setting.
 2016-08-14 21:36:06 +02:00
Anthony Van de Gejuchte
110a1ac885 Make distinction between * method and * operator 
Also add quotes to properties when necessary,
this might be the case if the name isn't a valid
identifier
 2016-07-29 21:31:08 +02:00
Anthony Van de Gejuchte
3f8fc3a316 Fix computed getters + cleanup AST 2016-07-21 18:21:46 +02:00
Anthony Van de Gejuchte
72a9d799b6 Various property fixes 
* Implement getter/setter with computed value
* Fix parsing getter/setter after static or generator token
* Allow storing expressions for computed expression in AST_SymbolMethod
* Allow get and set in shorthand properties in object literals

Fixes #1094, #1146 and #1221
 2016-07-21 16:50:32 +02:00
Anthony Van de Gejuchte
766fafda8b Don't remove empty generators passed as parameter 2016-07-19 18:13:07 +02:00
kzc
842ac27efb [ES6] Get compress and global_defs working for AST_Class 2016-07-17 19:56:02 +02:00
Anthony Van de Gejuchte
0af42d1831 Template fixes 
* Fixes #1147: template strings not obeying -b ascii_only true
* Allow evaluation of template expressions by adding optimizers and
  walkers
* Make sure tagged templates are never changed
* Remove template tokenizer in parser, add template tokenizer in
  tokenizer. It is using a brace counter to track brace position of
  templates
* Add tokens `template_head` and `template_substitution` but parsing
  tokens stays mostly the same
* Do not output strings anymore in AST_TemplateString, instead use
  AST_TemplateSegment
* Fix parsing tagged templates, allowing multiple templates behind
  as spec allows this

These changes don't influence tagged templates because raw content
may influence code execution, however they are safe to do in normal
templates:
* Allow basic string concatenation of templates where possible
* Allow custom character escape style similar to strings, except in
  tagged templates

Note that expressions are still compressed in tagged templates.

Optional things that may be improved later:
* Custom quote style for templates if it doesn't have expressions.
  Making it obey the quote_style option if this is the case.
 2016-07-17 00:36:42 +02:00
Anthony Van de Gejuchte
7eb52d2837 Keep const in own scope while compressing 
- Fixes #1205
- Fix provided by @kzc
 2016-07-15 13:20:52 +02:00
kzc
eb63fece2f Fix mangle with option keep_fnames=true for Safari. 
Fixes: #1202
 2016-07-15 13:18:14 +02:00
Anthony Van de Gejuchte
ff7f6139ba Improve multi-line comment parsing 
* Make sure comments are skipped correctly with surrogates
* Fix regression in multiline comments with nlb
 2016-07-12 00:08:35 +02:00
Anthony Van de Gejuchte
d9bc6f303c Fix output arrow function with 1 param with default value 
Fixes #1090
 2016-07-03 21:37:53 +02:00
Anthony Van de Gejuchte
6fd9b338dd Merge branch 'master' into harmony 2016-07-03 21:35:00 +02:00
Anthony Van de Gejuchte
54a783ba84 Add ecma5 flag for codegen 2016-06-30 22:47:44 +02:00
Anthony Van de Gejuchte
63c432f4fa Extend unicode support 
* Support \u{xxxx} syntax
 * Add support for surrogate pairs
 * Allow identifiers to have unicode escape sequence
 2016-06-30 22:47:44 +02:00
kzc
02c638209e Enable --screw-ie8 by default. 
catch identifier is mangled correctly for ES5 standards-compliant JS engines by default.

Unconditionally use the ie8 if/do-while workaround whether or not --screw-ie8 is enabled.

To support non-standard ie8 javascript use: uglifyjs --support-ie8
 2016-06-30 21:49:48 +02:00
Anthony Van de Gejuchte
3a7d53f3cf Move OctalEscapeSequence to read_escape_char 
This should simplify and improve implementation, make it easier to
implement template strings, and keep master a bit more in sync with
harmony.

Previous implementation wasn't broken, though the loop gave me the
impression it could read infinite numbers and annoyed me a bit. It was
also slightly unnecessary because the lookup involved only 3 characters.
 2016-06-30 21:42:15 +02:00
Anthony Van de Gejuchte
6eaeb19a4a Add exponentiation operator 2016-06-22 12:23:37 +02:00
kzc
ace8aaa0f4 Fix conditional expressions of form (x ? -1 : -1) 
Fixes #1154, #1153
 2016-06-21 14:52:13 -04:00
kzc
0c003c92a8 Don't replace undefined, NaN and Infinity within with scope 2016-06-21 10:53:29 +02:00
Anthony Van de Gejuchte
2246c79318 Merge branch 'master' into fix-harmony 2016-06-20 19:21:25 +02:00
Anthony Van de Gejuchte
dda58244b6 Fixes to prevent failing tests after merging master 
* Add missing quote properties to AST_ObjectKeyVal
 * Avoid test results being interpret as directives
 2016-06-20 15:02:09 +02:00
Shrey Banga
e645ba84cf
Respect quote style in object literals 
The option added in fbbaa42ee5 wasn't
being respected inside object literals, so quoted property names would
still be stripped out with this option.

This is mostly a corner-case, but useful when the output is passed to
something like the Closure compiler, where quoted property names can be
used to prevent mangling.
 2016-06-19 21:13:31 +02:00
Anthony Van de Gejuchte
ca04508cd1
Restrict yield outside generators in strict mode 
* Move some yield/generic tests from compress/harmony.js to
  compress/yield.js
 * Adjust error messages to conform ecmascript standards
 2016-06-19 21:03:36 +02:00
Anthony Van de Gejuchte
6b03b800b3
Only last parameter between parentheses can have spread 2016-06-19 20:51:29 +02:00
Anthony Van de Gejuchte
f9cab7ad61
Allow expand in array literals 2016-06-19 20:49:18 +02:00
Anthony Van de Gejuchte
d7971ba0e4 Fix test262 failures related to <, <=, in and instanceof 
Fixed-by: @kzc
 2016-06-15 23:11:08 +02:00
Richard van Velzen
0a3d780327 Merge branch 'master' into harmony 2016-06-12 17:29:42 +02:00
Anthony Van de Gejuchte
6c8e001fee Stop dropping args in new expressions 2016-06-12 17:17:17 +02:00
David Bau
f99b7b630d Escape null characters as \0 unless followed by 0-7. 2016-06-12 14:32:32 +02:00
Anthony Van de Gejuchte
ea31da2455 Don't drop unused if scope uses with statement 
Fix provided by @kzc
 2016-06-12 14:30:28 +02:00
Richard van Velzen
fa29344781 Merge branch 'master' into harmony 2016-06-09 22:29:52 +02:00
Anthony Van de Gejuchte
dcfc514c38 Improve yield support and restrict usage of strict 
- Partially reverting 91cdb93e57 and eaf3911c31 and reimplement
- Add generators support for objects and classes
- Only classes can have static methods so restrict use of it

Special thanks to @rvanvelzen and @kzc for reviewing this patch and
providing constructive feedback over and over again.
 2016-06-09 22:22:15 +02:00
Anthony Van de Gejuchte
8287ef6781 Fix uglify attempting to rewrite invalid new expressions 2016-06-08 19:45:21 +02:00
kzc
09d5707a8a collapse_vars: Do not consider RegExp literals to be constants 
Fixes #1100
 2016-05-27 00:03:51 -04:00
Richard van Velzen
0357e5923f Merge branch 'master' into harmony 2016-05-24 17:56:20 +02:00
kzc
1e390269d4 Optimize if_return for single if/return cases. 
Fixes #1089
 2016-05-24 17:54:08 +02:00
Richard van Velzen
bc49dfd27a Completely allow evaluating -0 2016-05-24 17:50:29 +02:00
Richard van Velzen
27eedbc302 Never produce -0 when evaluating expressions (like -"") 
Fix for #1085. The major case was already there, but more expressions can result in -0.
 2016-05-17 22:34:38 +02:00
Richard van Velzen
f63803e3e3 Merge branch 'master' into harmony 2016-05-16 09:53:13 +02:00
kzc
5f464b41e2 Simplify iife new fix 
as suggested by @rvanvelzen.

Added a test for IIFEs in nested contexts.
 2016-05-15 19:12:17 -04:00
Richard van Velzen
63be1f3a4d Only allow var definitions to be moved into the for-init clause 
Fixes #1079
 2016-05-15 21:00:51 +02:00
kzc
bcc1318d4b Do not apply negate_iife optimization to new expression 2016-05-09 03:19:28 -04:00
Richard van Velzen
e36e07fa77 Merge branch 'master' into harmony 2016-05-04 20:13:35 +02:00
Richard van Velzen
e9224ab444 Add test cases for slightly more esoteric cases 2016-04-26 11:49:55 +02:00
Richard van Velzen
4d9a085687 Add test case for hoisting a single function 2016-04-26 11:43:03 +02:00
not-an-aardvark
5b893c8ec3 Avoid syntax error in yield assignments (fixes #1054) 2016-04-25 19:14:44 -04:00
Richard van Velzen
4fe630431c Hoist functions when reversing if (x) return; ... vs. if (!x) ... 
Fixes #1052
 2016-04-23 23:48:33 +02:00
kzc
c55dd5ed74 Add passes compress option. Fix duplicate compress warnings. 2016-04-19 20:05:33 +02:00
Richard van Velzen
8571a08a93 Do not attempt evaluating class expressions 
Broadly the same as function expressions - these actually are statements but
we're limited by the inheritance tree.

Fixes #1044
 2016-04-19 20:01:26 +02:00
Richard van Velzen
68cc14f846 Fixups after merge 2016-04-18 15:51:32 +02:00
Richard van Velzen
f94497d1d6 Merge branch 'master' into harmony 2016-04-18 15:50:35 +02:00
Richard van Velzen
4b4528ee05 Prevent endless recursion when evaluating self-referencing consts 
Fix #1041
 2016-04-13 15:03:31 +02:00
Richard van Velzen
eaf3911c31 Consider yield expressions as having side-effects 
See #1043
 2016-04-13 14:39:49 +02:00
Darío Javier Cravero
91cdb93e57 Implement harmony generators and yield 
Uses #716's implementation and adds tests.

Fixes #716.
 2016-04-13 14:22:08 +02:00
Richard van Velzen
187a0caf9d Add base54.reset() to compress tests 
Without this reset, char counts bleed to next tests. One test had a bad expect clause.
 2016-04-12 20:08:09 +02:00
kzc
3907a5e3b2 Fix warnings for referenced non-hoisted functions. 
Fixes #1034

Also added `expect_warnings` functionality to test framework.
 2016-04-11 18:15:20 +02:00
kzc
98434258d0 Optimize ternaries with boolean consequent or alternative. 
Fixes #511
 2016-04-02 17:22:12 +02:00
Fábio Santos
634f231b78 First class block scope 
- Make let, const, and class symbols be declared in a block scope.
- Piggy back on existing catch symbol implementation to get block-aware mangling working
- Make sure unused block-scoped declarations can be dropped
- Don't eliminate a block if it has a block-scoped declaration
- Remove silly empty anonymous blocks left over from drop_unused
- AST_Toplevel now gets to call drop_unused too, since block-scoped variables aren't global!
- Don't consider block declarations global
 2016-03-27 19:40:20 +02:00
Fábio Santos
6702cae918 fix #1021 2016-03-27 12:21:39 +01:00
kzc
07bb7262d0 Escape all ASCII control characters within strings when using ascii_only. 
Fixes #1017.

Tab characters within strings are now output as `\t` in all output modes.
 2016-03-24 11:51:54 -04:00
Fábio Santos
6d2f77c180 fix #1003 by removing AST_ObjectSymbol and using AST_ObjectKeyVal for the same effect 2016-03-14 13:42:50 +01:00
Fábio Santos
0bc4f6edb4 Don't mangle exported symbols 2016-03-14 12:54:05 +01:00
Fábio Santos
ce84a706a3 Implement the export statement 2016-03-14 12:54:05 +01:00
Fábio Santos
86b5248837 Mangling externally imported names by using aliasing 2016-03-14 12:54:05 +01:00
Fábio Santos
59e1601fb8 importing names in the modules, not just default imports 2016-03-14 12:54:05 +01:00
Fábio Santos
d35a9e7839 Importing names from places 2016-03-14 12:54:05 +01:00
Fábio Santos
0465bd270d Starting out the import statement 2016-03-14 12:54:05 +01:00
philippsimon
ee6c9fabb7 Fix: Uglified Number.prototype functions on big numbers 2016-03-14 12:41:06 +01:00
viclm
6780d0906c Fix eager parsing of arrow functions for non-punc tokens 2016-03-10 22:18:48 +01:00
kzc
11b0efdf84 boolean_expression ? true : false --> boolean_expression 2016-02-22 17:59:36 +01:00
kzc
5486b68850 Take operator || precendence into account for AST_If optimization. 
Fixes #979.
 2016-02-21 12:05:02 -05:00
alexlamsl
6547437725 preserve ThisBinding for side_effects 2016-02-17 19:34:01 +01:00
Richard van Velzen
9662228f6a Don't compress (0, eval)() to eval() 2016-02-16 19:00:48 +01:00
alexlamsl
31a9b05c96 Preserve ThisBinding in conditionals & collapse_vars 
Fixes #973
 2016-02-16 18:47:49 +01:00
Fábio Santos
d7ec2ecc12 Fix #931: Create arrow functions in maybe_assign so that they can be used in assignments 2016-02-09 00:02:23 +00:00
kzc
929de2b0de collapse_vars: fix if/else and ternary operator side effects 2016-01-28 12:17:06 -05:00
kzc
af2472d85e collapse_vars: fix bug in repeated var defs of same name 2016-01-28 16:48:50 +01:00
kzc
0a38a688f9 fix bug in collapse_vars for right side of "||" and "&&" 2016-01-27 14:18:46 -05:00
kzc
f4c2ea37bf Collapse single use var definitions 
Fix #721
 2016-01-27 11:48:15 +02:00
Richard van Velzen
b5a7197ae5 Merge pull request #928 from STRML/constPragma 
Mark vars with /** @const */ pragma as consts so they can be eliminated.
 2016-01-20 19:04:36 +01:00
Samuel Reed
1b703349cf
Tighten up @const regex. 2016-01-20 11:35:45 -06:00
Samuel Reed
f97da4294a
Use TreeWalker for more accurate @const results and update tests 2016-01-20 10:54:00 -06:00
Samuel Reed
8b71c6559b
Mark vars with /** @const */ pragma as consts so they can be eliminated. 
Fixes older browser support for consts and allows more flexibility
in dead code removal.
 2016-01-19 13:23:02 -06:00
Anthony Van de Gejuchte
26641f3fb2 Allow operator names as getters/setters 
Fixes #919

Fix provided by @kzc
 2016-01-19 19:28:51 +01:00
Richard van Velzen
c80ec625ec Add test for bad template string parsing 2016-01-19 19:22:22 +01:00
Fábio Santos
028ff64e9a Default values inside destructurings 2016-01-19 19:22:22 +01:00
Fábio Santos
5b553aafe2 Destructuring parameters with defaults. function x({ foo, bar } = {}) { } 2016-01-19 19:22:22 +01:00
Fábio Santos
084437bc6d Non-destructuring default parameters 2016-01-19 19:22:22 +01:00
Anthony Van de Gejuchte
6605d15783 Never mangle arguments and keep them in their scope 
Fixes #892

Helped-by: kzc
 2016-01-14 19:45:52 +01:00
Mihai Bazon
fe4e9f9d97 Fix hoisting the var in ForIn 
Close #913
 2016-01-05 13:56:52 +02:00
Richard van Velzen
7f3dbb6df7 Merge branch 'master' into harmony 2015-12-26 17:59:38 +01:00
Richard van Velzen
60c4030a4d Merge pull request #874 from kzc/fix-conditionals 
#873 Fix `conditionals` optimizations with default compress options
 2015-12-26 14:28:33 +01:00
Anthony Van de Gejuchte
0cabedc526 Disable loop optimization for parse-only tests 2015-12-18 19:20:56 +01:00
Anthony Van de Gejuchte
5cd26c005b Add tests 2015-12-18 14:39:48 +01:00
kzc
774bda13cd #873 Fix conditionals optimizations with default compress options 2015-11-24 13:27:50 -05:00
Fábio Santos
a800356ad0 Implement new.target 2015-11-21 14:48:23 +00:00
Fábio Santos
e076abdbf2 Mangle class names correctly 2015-11-21 13:59:18 +00:00
Fábio Santos
425613b0d2 mangle class names 2015-11-21 12:20:20 +00:00
kzc
bd0ae6569f return undefined optimization no longer uses return_void_0 option 2015-10-29 08:19:12 +01:00
kzc
841a661071 more tests for return undefined optimization 2015-10-29 08:19:12 +01:00
kzc
7491d07666 optimize return undefined and return void 0 2015-10-29 08:19:12 +01:00
Richard van Velzen
335e349314 Allow specification beautify options in tests 
Caught an error in #847 as well - `output` wasn't passed anywhere which led to an exception. `options` was available though.
 2015-10-28 20:50:01 +01:00
Fábio Santos
9ffed2bea6 static properties 2015-10-27 12:24:37 +00:00
Fábio Santos
5f7cb6939c Starting ES6 classes 2015-10-27 12:24:37 +00:00
Fábio Santos
64e7a00399 Accept keyword names as concise method names 2015-10-27 09:31:16 +01:00
Fábio Santos
c99eaae360 Make concise methods work with propmangle 2015-10-27 09:31:16 +01:00
Fábio Santos
da8c428a07 Just making sure that concise methods are separated by commas. When classes come, they won't be necessary. 2015-10-27 09:31:16 +01:00
Fábio Santos
0d8dea9538 start concise methods 2015-10-27 09:31:16 +01:00
Fábio Santos
2cce61c564 Allow 'of' to be a name. 2015-10-26 20:56:59 +00:00
Richard van Velzen
6be9c752d5 Merge branch 'master' into harmony 2015-10-20 20:12:10 +02:00
kzc
dff54a6552 Fix other operator output related to <!-- or --> 2015-10-13 01:17:10 -04:00
Fábio Santos
76ed083e47 Using single quotes 2015-10-12 21:39:19 +01:00
Fábio Santos
b31918bbf0 computed properties 2015-10-12 21:38:20 +01:00
kzc
9f1f21b810 Output -- > instead of --> in expressions. Escape <!-- and --> within string literals. 2015-10-12 10:19:17 +03:00
Richard van Velzen
b14496c742 Merge branch 'master' into harmony 
Conflicts:
	lib/compress.js
 2015-10-12 08:54:44 +02:00
kzc
0d952ae43d add asm.js test 2015-10-07 10:00:28 +02:00
Ville Lautanala
5fd12451f9 Control keeping function arguments with a single option 2015-09-14 19:38:45 +02:00
Richard van Velzen
991fa99655 Merge branch 'master' into harmony 2015-09-13 14:17:45 +02:00
Fábio Santos
3d7f73114d Add a test to make sure future generations don't hoist lets 2015-09-13 14:15:53 +02:00
Fábio Santos
dde9e293df parse, output the let statement 2015-09-13 14:15:53 +02:00
Richard van Velzen
34685a6f55 Merge pull request #794 from fabiosantoscode/feature/harmony-template-strings-2 
Harmony: template strings
 2015-09-08 21:23:41 +02:00
Fábio Santos
2fac2bbfe4 Remove unused state variable in_parameters, and also remove unreachable code (try_an_object always returned an object!) 2015-09-05 23:01:29 +01:00
Fábio Santos
242c61be94 prefixed template strings, like "String.rawfoo\nbar". 2015-09-05 22:48:38 +01:00
Fábio Santos
e1cb1a0e3c Parse and output ES6 template strings. Yikes! 2015-09-05 22:32:57 +01:00
Richard van Velzen
fcde6109b0 Fix bad parsing of new new x()() constructs 
Fixes #739
 2015-08-27 12:29:36 +03:00
Fábio Santos
dc5db9b6ca Starting destructuring expressions 2015-08-25 17:49:27 +01:00
Richard van Velzen
e3bd223dac Don't change sequences that influence lexical binding in calls 
Fixes #782
 2015-08-25 10:53:35 +02:00
Fábio Santos
d4f17f29ae Destructuring vardef in for..of and for..in 2015-08-21 12:04:26 +02:00
Fábio Santos
025d34bfa2 Add holes in destructuring defs, also make them nestable 2015-08-21 12:04:26 +02:00
Fábio Santos
c44c2d6c21 Parse and compress destructuring VarDefs 2015-08-21 12:04:26 +02:00
Richard van Velzen
35b31bdd4e Merge branch 'master' into harmony 2015-08-21 11:58:35 +02:00
Richard van Velzen
c8b82583d2 Merge pull request #773 from fabiosantoscode/harmony-typeof-arrows 
Fix evaluating the typeof an arrow function.
 2015-08-21 11:51:42 +02:00
Richard van Velzen
872231a0ca Merge pull request #775 from fabiosantoscode/feature/binary-literals 
Parse ES6 number literals, round 2
 2015-08-21 11:50:39 +02:00
Fábio Santos
36420183fd s/binary/number/g 2015-08-17 16:23:43 +01:00
Fábio Santos
a8f8aa518b Add new-style octal literals and make the B and the O case insensitive. 2015-08-17 11:50:56 +01:00