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| author | Alex Lam S.L <alexlamsl@gmail.com> | 2019-12-22 01:08:56 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-12-22 01:08:56 +0000 |
| commit | 519a00bd8adc72888ccf8d39161f835608a39ac3 (patch) | |
| tree | 20215354e06ddf299fc87d50783c051943d96cf8 /lib | |
| parent | 3ff0feddee0f293649d87be28d3cd0cf587dd195 (diff) | |
| download | tracifyjs-519a00bd8adc72888ccf8d39161f835608a39ac3.tar.gz tracifyjs-519a00bd8adc72888ccf8d39161f835608a39ac3.zip | |
fix corner case in `collapse_vars` (#3642)
fixes #3641
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compress.js | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/compress.js b/lib/compress.js index 3b40a5d3..c5b67569 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -1569,6 +1569,7 @@ merge(Compressor.prototype, { var parent = scanner.parent(level); if (parent instanceof AST_Array) return find_stop_value(parent, level + 1); if (parent instanceof AST_Assign) { + if (may_throw(parent)) return node; if (parent.left instanceof AST_SymbolRef) { var name = parent.left.name; if (lhs.name == name) return node; @@ -1647,7 +1648,9 @@ merge(Compressor.prototype, { if (is_last_node(node, parent)) return node; if (in_conditional(node, parent)) return node; if (parent instanceof AST_Array) return find_stop_unused(parent, level + 1); - if (parent instanceof AST_Assign) return find_stop_unused(parent, level + 1); + if (parent instanceof AST_Assign) { + return may_throw(parent) ? node : find_stop_unused(parent, level + 1); + } if (parent instanceof AST_Binary) return find_stop_unused(parent, level + 1); if (parent instanceof AST_Call) return find_stop_unused(parent, level + 1); if (parent instanceof AST_Case) return find_stop_unused(parent, level + 1); |