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path: root/lib/scope.js
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2017-05-14fix bugs with getter/setter (#1926)Alex Lam S.L
- `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
2017-05-12remove support for `const` (#1910)Alex Lam S.L
As this is not part of ES5.
2017-04-17compress duplicated variable definitions (#1817)Alex Lam S.L
These are surprisingly common, as people reuse the same variable name within loops or switch branches.
2017-04-15unify CLI & API under `minify()` (#1811)Alex Lam S.L
- 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
2017-03-31sort options in alphabetical order (#1743)Alex Lam S.L
They started off as functional groups I guess, but given the sheer number of options this is becoming too difficult to read.
2017-03-31fix catch symbol mangling (#1734)Alex Lam S.L
Only need to look up the immediate non-block/catch scope for the same-name special case. fixes #1733
2017-03-28handle var within catch of the same name (#1711)Alex Lam S.L
The following code prints `1`: var a = 1; !function(){ a = 4; try{ throw 2; } catch (a) { var a = 3; } }(); console.log(a); fixes #1708
2017-03-28fix mangle for variable declared within catch block (#1706)Alex Lam S.L
fixes #1704
2017-03-27handle overlapped variable definitions (#1691)Alex Lam S.L
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.
2017-03-10fix catch variable reference in IE8 (#1587)Alex Lam S.L
`AST_Scope.def_variable()` will overwrite `AST_Symbol.thedef`, so save a copy before calling. fixes #1586
2017-03-05handle variable declaration within catch blocks (#1546)Alex Lam S.L
accounts for IE8- scoping
2017-03-05stay safe with constants in IE8- (#1547)Alex Lam S.L
- `undefined` etc. can be redefined at top-level for IE8-, so disable related optimisations - fixed `--support-ie8` catch mangle bug
2017-02-26consolidate `evaluate` & `reduce_vars` (#1505)Alex Lam S.L
- improve marking efficiency - apply smarter `const` replacement to `var` fixes #1501
2017-02-24enable `collapse_vars` & `reduce_vars` by defaultalexlamsl
- fix corner cases in `const` optimisation - deprecate `/*@const*/` fixes #1497 closes #1498
2017-02-21enhance `global_defs`alexlamsl
- support arrays, objects & AST_Node - support `"a.b":1` on both cli & API - emit warning if variable is modified - override top-level variables fixes #1416 closes #1198 closes #1469
2017-02-21improve reduce_vars and fix a bugalexlamsl
- update modified flag between compress() passes - support IIFE arguments - fix corner case with multiple definitions closes #1473
2017-02-18fix corner case in keep_fnamesalexlamsl
happens when inner function: - just below top level - not referenced - `unused` is disabled closes #1445
2017-02-18remove unused AST_Scope.nesting & AST_SymbolRef.framealexlamsl
they are computed but never used closes #1444
2017-01-26fix mangling collision with keep_fnames (#1431)Alex Lam S.L
* fix mangling collision with keep_fnames fixes #1423 * pass mangle options to figure_out_scope() bring command-line in line with minify()
2017-01-26augment evaluate to extract within objects (#1425)Alex Lam S.L
- gated by `unsafe` - replaces previous optimisation specific to String.length - "123"[0] => 1 - [1, 2, 3][0] => 1 - [1, 2, 3].length => 3 - does not apply to objects with overridden prototype functions
2017-01-19add missing LHS cases which global_defs should avoidalexlamsl
2016-10-23fix uses_arguments handling (broken since 6605d1578351)Jann Horn
Using the symbol declaration tracking of UglifyJS doesn't make sense here anyway, `arguments` always comes from something in the current scope. fixes #1299
2016-10-01Optimize unmodified variablesalexlamsl
2016-07-15Fix mangle with option keep_fnames=true for Safari.kzc
Fixes: #1202
2016-06-30Enable --screw-ie8 by default.kzc
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
2016-03-28Speedup `unused` compress option for already minified codekzc
Fixes: #321 #917 #1022
2016-02-27#877 Ignore mangle sort optionkzc
2016-02-17preserve ThisBinding for side_effectsalexlamsl
2016-01-27Add start/end in the `arguments` definitionMihai Bazon
(keeps my https://github.com/mishoo/jsinfo.el working)
2016-01-20Tighten up @const regex.Samuel Reed
2016-01-20Simplify by skipping extra tree walk.Samuel Reed
2016-01-20Use TreeWalker for more accurate @const results and update testsSamuel Reed
2016-01-19Mark vars with /** @const */ pragma as consts so they can be eliminated.Samuel Reed
Fixes older browser support for consts and allows more flexibility in dead code removal.
2016-01-14Never mangle arguments and keep them in their scopeAnthony Van de Gejuchte
Fixes #892 Helped-by: kzc
2015-11-12Build label def/refs info when figuring out scopeMihai Bazon
Fix #862
2015-11-11Rework has_directiveMihai Bazon
It's now available during tree walking, i.e. walker.has_directive("use asm"), rather than as part of the scope. It's thus no longer necessary to call `figure_out_scope` before codegen. Added special bits in the code generator to overcome the fact that it doesn't inherit from TreeWalker. Fix #861
2015-10-07Add proper support for "use asm"; blocks. Disable -c optimization within ↵kzc
"use asm"; sections and preserve floating point literals in their original form. Non-asm.js sections are optimized as before. Asm.js sections can still be mangled and minified of whitespace. No special command line flags are required.
2015-03-16rename --prop-cache to --name-cacheMihai Bazon
... and support storing there variable names as well, to help with multiple invocations when mangling toplevel.
2015-01-04Add an option to prevent function names from being mangledRichard van Velzen
See #552. This is mostly useful for having the actual function names in traces.
2014-12-01fix base54Cheng Liangyu
2014-09-12Don't warn for an unreferenced exception symbol in a catch block.Arnavion
2014-02-14Mangle name of exception when --screw-ie8. Fix #430.Mihai Bazon
The effect of not mangling it was visible only with --screw-ie8 (otherwise the names would be mangled exactly because they leaked into the parent scope).
2013-12-16minorMihai Bazon
2013-12-16bugfix #242colorhook
2013-12-05AST_Catch shouldn't really inherit from AST_Scope. Fix #363Mihai Bazon
I hereby acknowledge that figure_out_scope has become a mess.
2013-11-28Properly scope `catch` identifier when --screw-ie8Mihai Bazon
Fix #344
2013-10-29Fix typoMihai Bazon
2013-10-29Avoid shadowing name of function expression with function argumentMihai Bazon
Close #179, #326, #327
2013-10-17`arguments` outside of a function is an ordinary variable.Mihai Bazon
Fix #501
2013-09-02Disallow `continue` referring to a non-IterationStatement. Fix #287Mihai Bazon
Simplifies handling of labels (their definition/references can be easily figured out at parse time, no need to do it in `figure_out_scope`).
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