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disallow collapse_vars constant replacement in for-in statements

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This commit is contained in:
kzc 2017-03-02 19:59:49 -05:00
parent b5e0e8c203
commit 6e9dd4bf55
1 changed files with 3 additions and 5 deletions
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8
lib/compress.js
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@ -481,11 +481,9 @@ merge(Compressor.prototype, {
// Constant single use vars can be replaced in any scope.
if (var_decl.value.is_constant()) {
var ctt = new TreeTransformer(function(node) {
if (node === ref) {
var parent = ctt.parent();
if (!(parent instanceof AST_ForIn && parent.init === node)) {
return replace_var(node, parent, true);
}
if (node === ref
&& !ctt.find_parent(AST_ForIn)) {
return replace_var(node, ctt.parent(), true);
}
});
stat.transform(ctt);