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fix assignment check of logical assignment

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kingwl
2020-04-10 14:19:59 +08:00
parent d2be8900dc
commit be708bbb0a
1 changed files with 4 additions and 1 deletions
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src/compiler/checker.ts
+4 -1
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@@ -19772,6 +19772,9 @@ namespace ts {
case SyntaxKind.BinaryExpression:
switch ((<BinaryExpression>node).operatorToken.kind) {
case SyntaxKind.EqualsToken:
case SyntaxKind.BarBarEqualsToken:
case SyntaxKind.AmpersandAmpersandEqualsToken:
case SyntaxKind.QuestionQuestionEqualsToken:
return getReferenceCandidate((<BinaryExpression>node).left);
case SyntaxKind.CommaToken:
return getReferenceCandidate((<BinaryExpression>node).right);
@@ -28590,7 +28593,7 @@ namespace ts {
getUnionType([extractDefinitelyFalsyTypes(strictNullChecks ? leftType : getBaseTypeOfLiteralType(rightType)), rightType]) :
leftType;
if (operator === SyntaxKind.AmpersandAmpersandEqualsToken) {
checkAssignmentOperator(resultType);
checkAssignmentOperator(rightType);
}
return resultType;
}