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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2020-06-09 03:33:47 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-06-09 10:33:47 +0800 |
| commit | d764b6cc3b3af1b42d06fffb820006105172061f (patch) | |
| tree | d516281284741792447ddb4328a4094cfadbdb90 /lib/compress.js | |
| parent | 08c4729eb45e0e7d5ab34a8ffa814b6093822930 (diff) | |
| download | tracifyjs-d764b6cc3b3af1b42d06fffb820006105172061f.tar.gz tracifyjs-d764b6cc3b3af1b42d06fffb820006105172061f.zip | |
fix corner case in `reduce_vars` (#3975)
fixes #3974
Diffstat (limited to 'lib/compress.js')
| -rw-r--r-- | lib/compress.js | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js index d82c8124..907c9e75 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -4032,7 +4032,9 @@ merge(Compressor.prototype, { return all(this.elements); }); def(AST_Binary, function() { - return this.left.is_constant_expression() && this.right.is_constant_expression(); + return this.left.is_constant_expression() + && this.right.is_constant_expression() + && (this.operator != "in" || is_object(this.right.tail_node())); }); def(AST_Constant, return_true); def(AST_Lambda, function(scope) { |