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fix corner case in merge_vars (#4524)

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fixes #4523
This commit is contained in:
Alex Lam S.L
2021-01-08 07:49:14 +00:00
committed by GitHub
parent 7fe8c9150a
commit 553034fe52
2 changed files with 27 additions and 2 deletions
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7
lib/compress.js
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@@ -4957,7 +4957,10 @@ merge(Compressor.prototype, {
node.right.walk(tw);
var marker = new TreeWalker(function(node) {
if (node instanceof AST_Destructured) return;
if (node instanceof AST_DestructuredKeyVal) {
if (node instanceof AST_DefaultValue) {
node.value.walk(tw);
node.name.walk(marker);
} else if (node instanceof AST_DestructuredKeyVal) {
if (node.key instanceof AST_Node) {
push();
segment.block = node;
@@ -5177,7 +5180,7 @@ merge(Compressor.prototype, {
node.name.mark_symbol(node.value ? function(node) {
if (!(node instanceof AST_SymbolDeclaration)) return;
if (node instanceof AST_SymbolVar) {
mark(node, false);
mark(node);
} else {
references[node.definition().id] = false;
}