JoBoEVD/UglifyJS
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291 Commits

Author SHA1 Message Date
Mihai Bazon
41c627379c Reverting "added option for dropping unused params" 
Revert "added option for dropping unused params"

(turns out we already had the `unused` option for this.)

This reverts commit e54df2226f.
 2013-07-25 18:08:36 +03:00
Dusan Bartos
e54df2226f added option for dropping unused params 2013-07-25 17:37:47 +03:00
Mihai Bazon
02a84385a0 Don't swap binary ops when "use asm" is in effect. 
Refs #167
 2013-06-07 12:52:09 +03:00
Mihai Bazon
caa8896a8a Only compress code in new Function if all arguments are strings. 2013-05-14 18:36:31 +03:00
Mihai Bazon
f64539fb76 Compress code passed to new Function if it's a constant. 
Only for `--unsafe`.

Close #203
 2013-05-14 10:47:06 +03:00
Mihai Bazon
d56ebd7d7b Fix a["1_1"] 
Close #204
 2013-05-14 10:42:34 +03:00
Mihai Bazon
a6ed2c84ac Better fix for equality of typeof ... against "undefined" 2013-05-08 16:22:48 +03:00
Justin Lau
a1958aad56 Fixed typeof undefined optimization and updated related test case to 
accomodates the sort behaviour changes made in commit
mishoo/UglifyJS2@aebafad41e.
Signed-off-by: Justin Lau <justin@tclau.com>
 2013-05-08 16:22:48 +03:00
Justin Lau
9af2bbffde Fixed dot properties not optimizing unicode identifiers. Signed-off-by: Justin Lau <justin@tclau.com> 2013-05-07 14:20:19 +03:00
Justin Lau
1e3bc0caa0 Fixed dot property issue with invlid identifier names. 
Signed-off-by: Justin Lau <justin@tclau.com>
 2013-05-05 22:27:43 +08:00
Michael Ficarra
5af144522a fixes #189: use dotted member access when --screw-ie8 option given 2013-04-20 15:11:05 -05:00
Roman Bataev
4b818056cf Fix typeof evaluation for regex and function 2013-04-03 22:34:38 -04:00
Mihai Bazon
e4b078cff7 Disable unsafe by default 
Close #147
 2013-03-11 00:04:31 +02:00
Mihai Bazon
aebafad41e Fix reordering comparisons 
Close #143
 2013-03-04 10:06:01 +02:00
Mihai Bazon
dac6efb43d Drop last default: if it's the last branch and empty 
Close #141
 2013-03-01 13:12:03 +02:00
Mihai Bazon
8880f4824c Compress boolean constants after evaluation 
Close #137
 2013-03-01 10:26:06 +02:00
Mihai Bazon
3a591c43fe Fix compressing do {...} while (false) 
It's not safe to transform it to {...} because the body might contain
`break`.  The solution could be more elaborate (detect if body contains
`break`) but I don't think it's worth the trouble.

Close #129
 2013-02-19 18:12:19 +02:00
Mihai Bazon
f36e4e9a78 Give up evaluating (unary-prefix '-' 0) 
Close #117

------

    JS, WHY YOU SUCK SO BADLY? ;-(
 2013-02-06 11:51:09 +02:00
Mihai Bazon
9e8ba27dcd Fix handling of constants 
Close #113
 2013-02-06 11:15:31 +02:00
Richard Gibson
522566ea80 Fix #105: property comparison to undefined is not always safe 2013-01-23 23:52:04 -05:00
Mihai Bazon
f0909bdc8f Handle String() with no arguments. 
Fix #91
 2013-01-17 11:01:38 +02:00
Mihai Bazon
31c4a37e37 Optimize new Array(1, 2, 3) → [1, 2, 3] 
Close #74
 2012-12-21 21:04:35 +02:00
Mihai Bazon
16430acc1f small improvement on merging assignments into hoisted vars 2012-12-05 13:14:49 +02:00
Mihai Bazon
320c110b33 When hoisting variables, try to merge in assignments that follow. 2012-12-05 12:30:25 +02:00
Mihai Bazon
5cc90db7d0 Don't messup compressor stack while optimizing Switch 
Fix #59
 2012-11-30 11:16:09 +02:00
Mihai Bazon
4f555e2232 fix for https://github.com/mishoo/UglifyJS/issues/474 2012-11-23 10:20:00 +02:00
Mihai Bazon
0d3fd2ef30 retain (1,eval) as is when it's the expression of an AST_Call 
otherwise we change the meaning of eval from global to lexical.
 2012-11-17 12:05:31 +02:00
Mihai Bazon
bdfcbf496b better solution for the last test in constant switch folding 2012-11-14 12:21:43 +02:00
Mihai Bazon
dba8da4800 optimize constant switch blocks 
ref. mishoo/UglifyJS#441
 2012-11-14 12:06:07 +02:00
Mihai Bazon
60c0f40250 Merge branch 'optimize_concat' of https://github.com/rvanvelzen/UglifyJS2 into rvanvelzen-optimize_concat 2012-11-13 14:38:55 +02:00
Mihai Bazon
e02771a5f2 don't change order in binary expressions if both operands have side effects 2012-11-13 14:32:07 +02:00
Richard van Velzen
f96f796f71 Add simple optimization for empty-string concats. 
ref. #43
 2012-11-12 15:41:03 +01:00
Mihai Bazon
53355bdb24 fix invalid AST produced by dropping unused variable 
close #44
 2012-11-12 13:23:57 +02:00
Dan Wolff
b49230ab8d convert 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();
}
 2012-11-11 15:53:34 +02:00
Mihai Bazon
1e5e13ed81 AST_LabelRef no longer inherits from AST_SymbolRef 2012-11-08 15:39:14 +02:00
Mihai Bazon
1a5fd3e052 optimization 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.)
 2012-11-08 11:43:14 +02:00
Mihai Bazon
ffccb233e5 convert while into for 2012-11-05 16:01:20 +02:00
Mihai Bazon
fba0c1aafe minor 2012-11-05 16:01:09 +02:00
Mihai Bazon
774f2ded94 minor 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.
 2012-11-05 13:13:06 +02:00
Mihai Bazon
8413787efc use a Dictionary object instead of plain object for hashes 
to mitigate the `__proto__` issue

related to #30
 2012-11-02 10:58:45 +02:00
Mihai Bazon
cf409800be it's safe to negate expression in !EXP only in boolean context 
#kendo
 2012-11-01 15:49:05 +02:00
Mihai Bazon
18270dd9f3 added unsafe_comps for negating <= with > 
since it has the potential to break code, let's keep it disabled by default
 2012-11-01 15:14:56 +02:00
Mihai Bazon
d4c25c571b fix compressing UnaryPrefix 
only try negating the expression if the operator is `!`

#kendo
 2012-11-01 13:35:08 +02:00
Mihai Bazon
abe0ebbf02 don't move expressions containing the binary in operator into the for initializer 
(opera can't parse it)

close #25
 2012-10-30 14:50:47 +02:00
Mihai Bazon
70fd2b1f33 fix for if (...) return; else return ...; 
(it was assumed that the first `return` always contains a value)

close #22
 2012-10-24 09:33:32 +03:00
Mihai Bazon
30faaf13ed more sequence optimizations (lift some sequences above binary/unary expressions so that we can avoid parens) 2012-10-22 11:58:06 +03:00
Mihai Bazon
fc8314e810 minor 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 }`
 2012-10-19 12:57:29 +03:00
Mihai Bazon
afb7faa6fa more optimizations for some break/continue cases 2012-10-18 15:14:57 +03:00
Mihai Bazon
253bd8559b more small optimizations 
(unlikely to help for hand-written code)
 2012-10-17 21:57:08 +03:00
Mihai Bazon
6a099fba66 define aborts on AST_If: true if both branches abort 2012-10-17 16:17:14 +03:00