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fix slowness in unused for blocks (#2614)

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fixes #2609
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kzc 2017-12-17 23:06:14 -05:00 committed by Alex Lam S.L
parent 80c8dfcde6
commit 85bfa17139
1 changed files with 1 additions and 0 deletions
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lib/compress.js
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@ -2827,6 +2827,7 @@ merge(Compressor.prototype, {
if (in_list && all(node.body, can_be_evicted_from_block)) { if (in_list && all(node.body, can_be_evicted_from_block)) {
return MAP.splice(node.body); return MAP.splice(node.body);
} }
return node;
} }
if (node instanceof AST_Scope) { if (node instanceof AST_Scope) {
var save_scope = scope; var save_scope = scope;