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for-in or for-of expression is evaluated before loop back edge

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This commit is contained in:
Anders Hejlsberg
2019-09-15 11:07:51 -07:00
parent 945babbaac
commit d26afd7273
1 changed files with 1 additions and 1 deletions
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2
src/compiler/binder.ts
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@@ -1032,12 +1032,12 @@ namespace ts {
function bindForInOrForOfStatement(node: ForInOrOfStatement): void {
const preLoopLabel = createLoopLabel();
const postLoopLabel = createBranchLabel();
bind(node.expression);
addAntecedent(preLoopLabel, currentFlow);
currentFlow = preLoopLabel;
if (node.kind === SyntaxKind.ForOfStatement) {
bind(node.awaitModifier);
}
bind(node.expression);
addAntecedent(postLoopLabel, currentFlow);
bind(node.initializer);
if (node.initializer.kind !== SyntaxKind.VariableDeclarationList) {