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fix corner case in loops (#4684)

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fixes #4683
This commit is contained in:
Alex Lam S.L
2021-02-24 20:41:21 +00:00
committed by GitHub
parent b8672b55b2
commit a5e6946f74
2 changed files with 23 additions and 4 deletions
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8
lib/compress.js
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@@ -1512,7 +1512,7 @@ merge(Compressor.prototype, {
return !is_lexical_definition(stat);
}) ? thing.body : [ thing ];
if (thing instanceof AST_EmptyStatement) return [];
if (thing instanceof AST_Statement) return [ thing ];
if (is_statement(thing)) return [ thing ];
throw new Error("Can't convert thing to statement array");
}
@@ -3382,7 +3382,7 @@ merge(Compressor.prototype, {
return in_list ? List.skip : make_node(AST_EmptyStatement, node);
}
if (node instanceof AST_Scope) return node;
if (!(node instanceof AST_Statement)) return node;
if (!is_statement(node)) return node;
}));
}
}
@@ -7504,7 +7504,7 @@ merge(Compressor.prototype, {
|| first instanceof AST_Continue && external_target(first)
|| first instanceof AST_Exit)) {
var body = [];
if (self.init instanceof AST_Statement) {
if (is_statement(self.init)) {
body.push(self.init);
} else if (self.init) {
body.push(make_node(AST_SimpleStatement, self.init, {
@@ -7606,7 +7606,7 @@ merge(Compressor.prototype, {
if (!cond) {
if (compressor.option("dead_code")) {
var body = [];
if (self.init instanceof AST_Statement) {
if (is_statement(self.init)) {
body.push(self.init);
} else if (self.init) {
body.push(make_node(AST_SimpleStatement, self.init, {