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fix corner case in collapse_vars (#5278)

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fixes #5277
This commit is contained in:
Alex Lam S.L
2022-01-08 01:46:21 +00:00
committed by GitHub
parent b0df5d7b55
commit f473b4db38
2 changed files with 22 additions and 2 deletions
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4
lib/compress.js
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@@ -1982,7 +1982,7 @@ Compressor.prototype.compress = function(node) {
abort = true;
folded = make_node(AST_Binary, candidate, {
operator: compound,
left: lhs.fixed ? lhs.fixed.to_binary() : lhs,
left: lhs.fixed && lhs.definition().fixed ? lhs.fixed.to_binary() : lhs,
right: rvalue,
});
}
@@ -2040,7 +2040,7 @@ Compressor.prototype.compress = function(node) {
});
if (candidate instanceof AST_UnaryPostfix) return make_node(AST_UnaryPrefix, candidate, {
operator: candidate.operator,
expression: lhs.fixed ? lhs.fixed.to_prefix() : lhs,
expression: lhs.fixed && lhs.definition().fixed ? lhs.fixed.to_prefix() : lhs,
});
if (candidate instanceof AST_VarDef) {
var def = candidate.name.definition();