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fix corner case in booleans (#5042)

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fixes #5041
This commit is contained in:
Alex Lam S.L
2021-06-30 17:52:54 +01:00
committed by GitHub
parent 4ba8b66c5a
commit 611abff49f
2 changed files with 25 additions and 4 deletions
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8
lib/compress.js
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@@ -8239,7 +8239,9 @@ merge(Compressor.prototype, {
}
function mark_duplicate_condition(compressor, node) {
for (var level = 0, child = compressor.self(), parent; ; child = parent) {
var level = 0, child, parent = compressor.self();
if (!is_statement(parent)) while (true) {
child = parent;
parent = compressor.parent(level++);
if (parent instanceof AST_Binary) {
var op = parent.operator;
@@ -8275,9 +8277,7 @@ merge(Compressor.prototype, {
if (parent instanceof AST_BlockStatement) {
if (parent.body[0] === child) continue;
} else if (parent instanceof AST_If) {
var cond = parent.condition;
if (cond === child) continue;
if (node.equivalent_to(cond)) switch (child) {
if (node.equivalent_to(parent.condition)) switch (child) {
case parent.body:
node.truthy = true;
break;