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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2019-10-17 09:58:05 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-10-17 09:58:05 +0800 |
| commit | 0785a15aceaee3f4a31d9693a4230cbf0477ea81 (patch) | |
| tree | 35c3685bd3adeca406922f61021659549965950f /lib/compress.js | |
| parent | b1279a46d9801bbc3eee8c4ea90422dd7582b928 (diff) | |
| download | tracifyjs-0785a15aceaee3f4a31d9693a4230cbf0477ea81.tar.gz tracifyjs-0785a15aceaee3f4a31d9693a4230cbf0477ea81.zip | |
fix corner case in `dead_code` & `ie8` (#3494)
fixes #3493
Diffstat (limited to 'lib/compress.js')
| -rw-r--r-- | lib/compress.js | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/compress.js b/lib/compress.js index e39435c7..4b0ceee4 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -888,8 +888,10 @@ merge(Compressor.prototype, { }); AST_SymbolRef.DEFMETHOD("is_immutable", function() { - var orig = this.definition().orig; - return orig.length == 1 && orig[0] instanceof AST_SymbolLambda; + var def = this.definition(); + if (def.orig.length != 1) return false; + var sym = def.orig[0]; + return sym instanceof AST_SymbolLambda && def.scope.name === sym; }); function is_lhs_read_only(lhs, compressor) { |