public
/
UglifyJS.git
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
7a30d82
)
Optimize seq,void 0. Close #377.
author
Mihai Bazon
<mihai@bazon.net>
Sun, 22 Dec 2013 09:36:45 +0000
(11:36 +0200)
committer
Mihai Bazon
<mihai@bazon.net>
Sun, 22 Dec 2013 09:36:45 +0000
(11:36 +0200)
(x, void 0) => void x
(x, undefined) => void x
lib/compress.js
patch
|
blob
|
history
diff --git
a/lib/compress.js
b/lib/compress.js
index
2a8b4c2
..
a3ba16a
100644
(file)
--- a/
lib/compress.js
+++ b/
lib/compress.js
@@
-1836,6
+1836,18
@@
merge(Compressor.prototype, {
return self.car;
}
}
+ if (self.cdr instanceof AST_UnaryPrefix
+ && self.cdr.operator == "void"
+ && !self.cdr.expression.has_side_effects(compressor)) {
+ self.cdr.operator = self.car;
+ return self.cdr;
+ }
+ if (self.cdr instanceof AST_Undefined) {
+ return make_node(AST_UnaryPrefix, self, {
+ operator : "void",
+ expression : self.car
+ });
+ }
return self;
});