Mihai Bazon
ea3430102c
Add property name mangler
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We only touch properties that are present in an object literal, or which are
assigned to. Example:
x = { foo: 1 };
x.bar = 2;
x["baz"] = 3;
x[cond ? "qwe" : "asd"] = 4;
console.log(x.stuff);
The names "foo", "bar", "baz", "qwe" and "asd" will be mangled, and the
resulting mangled names will be used for the same properties throughout the
code. The "stuff" will not be, since it's just referenced but never
assigned to.
This *will* break most of the code out there, but could work on carefully
written code: do not use eval, do not define methods or properties by
walking an array of names, etc. Also, a comprehensive list of exclusions
needs to be passed, to avoid mangling properties that are standard in
JavaScript, DOM, used in external libraries etc.
2015-03-14 11:22:28 +02:00
Mihai Bazon
bd0886a2c0
semicolons
2013-12-10 20:24:27 +02:00
Mihai Bazon
248f304f02
Merge pull request #245 from ForbesLindesay/patch-1
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Make `DefaultsError` a real `Error` object
2013-12-10 10:23:29 -08:00
Mihai Bazon
c16d538ce7
Add --noerr to turn off argument name checking
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for now only used for keys passed to `-c` or `-b`.
2013-11-28 13:15:01 +02:00
Forbes Lindesay
dfa395f6ff
Make DefaultsError a real Error object
2013-07-22 01:44:03 +01:00
Mihai Bazon
caa8896a8a
Only compress code in new Function if all arguments are strings.
2013-05-14 18:36:31 +03:00
Mihai Bazon
320c110b33
When hoisting variables, try to merge in assignments that follow.
2012-12-05 12:30:25 +02:00
Mihai Bazon
a4f6d46118
add option to mangle names even if eval/with is in use
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(for more fair comparison to Closure compiler)
2012-11-06 18:19:51 +02:00
Mihai Bazon
8413787efc
use a Dictionary object instead of plain object for hashes
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to mitigate the `__proto__` issue
related to #30
2012-11-02 10:58:45 +02:00
Mihai Bazon
afb7faa6fa
more optimizations for some break/continue cases
2012-10-18 15:14:57 +03:00
Mihai Bazon
fb5c01c073
stealing more hacks from acorn in the name of speed
2012-10-11 15:17:42 +03:00
Mihai Bazon
f4584af42c
using makeComparator from acorn to generate functions that tests whether a
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string is keyword, reserved etc.
speeds up the parser a bit, though not spectacular.. still far from acorn.
2012-10-11 11:52:05 +03:00
Mihai Bazon
172aa7a93c
cleanup
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- use prototype-less objects where feasible (minor speed improvement)
- get rid of HOP
2012-10-11 11:07:42 +03:00
Mihai Bazon
e1098b04a7
"use strict";
2012-10-02 12:45:58 +03:00
Mihai Bazon
9e5dd81f1e
a shy attempt to obey width in the beautifier; added bracketize option to always print brackets around if/do/while/for statements; export more options via the CLI
2012-10-02 11:22:38 +03:00
Mihai Bazon
78be8f5296
compressor successfully moved to TreeTransformer
2012-09-26 14:27:01 +03:00
Mihai Bazon
a83b28503f
properly drop mutually-referring declarations that are not otherwise
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referenced and have no side effects
2012-09-23 12:47:34 +03:00
Mihai Bazon
7b6a402916
rewrite handle_if_return
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optimizations of if/return/continue seem to be even better now
2012-09-16 15:46:20 +03:00
Mihai Bazon
a132841fb9
more AST_If optimizations
2012-09-12 16:10:03 +03:00
Mihai Bazon
8e82d8d94c
fixed some mess with symbols/scope
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- all symbols now have a `thedef` property which is a SymbolDef object,
instead of the `uniq` that we had before (pointing to the first occurrence
of the name as declaration).
- for undeclared symbols we still create a SymbolDef object in the toplevel
scope but mark it "undeclared"
- we can now call figure_out_scope after squeezing, which is useful in order
not to mangle names that were dropped by the squeezer
2012-09-11 15:42:28 +03:00
Mihai Bazon
6b9aeb5325
adaptive base54 digits depending on char frequency (WIP)
2012-09-10 22:29:18 +03:00
Mihai Bazon
a41e6cfabb
more progress on the compressor (WIP)
2012-09-10 16:37:05 +03:00
Mihai Bazon
1b5183dd5e
checkpoint
2012-09-04 15:36:14 +03:00
Mihai Bazon
1bf5928b54
Reverting "minor perf. improvements"
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Revert "minor perf. improvements"
This reverts commit 24bfd55a22
2012-09-03 10:26:23 +03:00
Mihai Bazon
24bfd55a22
minor perf. improvements
2012-09-02 11:11:39 +03:00
Mihai Bazon
58a3b5e93f
update (c) years
2012-08-27 11:01:41 +03:00
Mihai Bazon
95b18e54a4
added license
2012-08-22 21:28:59 +03:00
Mihai Bazon
458e251d7e
added mangler and other stuff
2012-08-20 17:32:35 +03:00
Mihai Bazon
1fe0ff9fff
doc (WIP)
2012-08-20 00:35:54 +03:00
Mihai Bazon
6c35135ace
simple visitor API and code to figure out scope and references
2012-08-19 15:57:50 +03:00
Mihai Bazon
861e26a666
WIP
2012-06-03 23:10:31 +03:00
Mihai Bazon
562b12f021
init repo
2012-05-27 14:13:26 +03:00
