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AgeCommit message (Expand)Author
2012-12-05When hoisting variables, try to merge in assignments that follow.Mihai Bazon
2012-11-30Don't messup compressor stack while optimizing Switch...Fix #59 Mihai Bazon
2012-11-23fix for https://github.com/mishoo/UglifyJS/issues/474Mihai Bazon
2012-11-17retain (1,eval) as is when it's the expression of an AST_Call...otherwise we change the meaning of eval from global to lexical. Mihai Bazon
2012-11-14better solution for the last test in constant switch foldingMihai Bazon
2012-11-14optimize constant switch blocks...ref. mishoo/UglifyJS#441 Mihai Bazon
2012-11-13Merge branch 'optimize_concat' of https://github.com/rvanvelzen/UglifyJS2 int...Mihai Bazon
2012-11-13don't change order in binary expressions if both operands have side effectsMihai Bazon
2012-11-12Add simple optimization for empty-string concats....ref. #43 Richard van Velzen
2012-11-12fix invalid AST produced by dropping unused variable...close #44 Mihai Bazon
2012-11-11convert x.toString() to ""+x instead of x+""...In some places this can save one byte in whitespace, e.g. after return. Example: function f(arg) { // return""+arg - no space between return and "" return arg.toString(); } Dan Wolff
2012-11-08AST_LabelRef no longer inherits from AST_SymbolRefMihai Bazon
2012-11-08optimization for if/break as first statement in a loop body... for(...; x; ...) if (y) break; → for(...; x&&!y; ...); similarly for `while` and some combinations (i.e. the `break` appears in the `else` clause, etc.) Mihai Bazon
2012-11-05convert `while` into `for`Mihai Bazon
2012-11-05minorMihai Bazon
2012-11-05minor optimization...for `==` or `!=` against a constant, prefer to display the constant first. should help a bit after gzip, i.e.: typeof foo=="undefined" ^^^^^^ ^^^^^^^^^^^^^ vs: "undefined"==typeof foo ^^^^^^^^^^^^^^^^^^^ (longer sequence that could repeat) idea stolen from closure. Mihai Bazon
2012-11-02use a Dictionary object instead of plain object for hashes...to mitigate the `__proto__` issue related to #30 Mihai Bazon
2012-11-01it's safe to negate expression in !EXP only in boolean context...#kendo Mihai Bazon
2012-11-01added unsafe_comps for negating `<=` with `>`...since it has the potential to break code, let's keep it disabled by default Mihai Bazon
2012-11-01fix compressing UnaryPrefix...only try negating the expression if the operator is `!` #kendo Mihai Bazon
2012-10-30don't move expressions containing the binary `in` operator into the `for` ini......(opera can't parse it) close #25 Mihai Bazon
2012-10-24fix for `if (...) return; else return ...;`...(it was assumed that the first `return` always contains a value) close #22 Mihai Bazon
2012-10-22more sequence optimizations (lift some sequences above binary/unary expressio...Mihai Bazon
2012-10-19minor fix for dropping unused definitions.... function f(x, y) { var g = function() { return h() }; var h = function() { return g() }; return x + y; } now compresses to `function f(x, y) { return x + y }` Mihai Bazon
2012-10-18more optimizations for some break/continue casesMihai Bazon
2012-10-17more small optimizations...(unlikely to help for hand-written code) Mihai Bazon
2012-10-17define aborts on AST_If: true if both branches abortMihai Bazon
2012-10-17employ a better parser for command-line arguments...to support passing commas in strings in for example: uglifyjs2 -cd TEST="'a,b'" <<EOF console.log(TEST); EOF → console.log("a,b") close #14 Mihai Bazon
2012-10-13drop unused function arguments...also add test for "drop_unused" (the last one fails for now) Mihai Bazon
2012-10-13fix compressing benchmark.js (it tried to evaluate a statement)...the following code in benchmark.js triggered the issue: support.decompilation = Function( 'return (' + (function(x) { return { 'x': '' + (1 + x) + '', 'y': 0 }; }) + ')' )()(0).x === '1'; technically that could be resolved into a constant expression, but seems it's being used here for browser bugs detection :-\ Mihai Bazon
2012-10-12remove the $self hack...operations are destructive anyway, so there's no point to clone the nodes in the transformer. speed++ Mihai Bazon
2012-10-11cleanup...- use prototype-less objects where feasible (minor speed improvement) - get rid of HOP Mihai Bazon
2012-10-10drop unused variableMihai Bazon
2012-10-09minorMihai Bazon
2012-10-09add AST_Infinity nodeMihai Bazon
2012-10-09added $propdoc to AST nodes and some cleanups...hopefully we can make the AST documentation self-generating Mihai Bazon
2012-10-09minor AST cleanup (AST_BlockStatement may inherit from AST_Block)Mihai Bazon
2012-10-09fix detecting symbols in useMihai Bazon
2012-10-08eliminate redundant directives in the same scopeMihai Bazon
2012-10-05minorMihai Bazon
2012-10-05replace `(function(){ ...no side effects ... })()` with `undefined`.Mihai Bazon
2012-10-04removed some unused variablesMihai Bazon
2012-10-03more cleanup (dropped AST_SwitchBlock)Mihai Bazon
2012-10-03AST cleanup (dropped AST_StatementBase)Mihai Bazon
2012-10-03added option for side-effect-free statements, fix testMihai Bazon
2012-10-03fix endless loop in testsMihai Bazon
2012-10-03fix for `a = !b && !c && !d && !e → a=!(b||c||d||e)`Mihai Bazon
2012-10-03disable `hoist_vars` by default and change `comparations` to `comparisons`Mihai Bazon
2012-10-02support definesMihai Bazon
2012-10-02"use strict";Mihai Bazon