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Properly report errors for failed type assertions

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This commit is contained in:
Anders Hejlsberg
2014-09-05 17:09:00 -07:00
parent e157763d6c
commit 8e7be9ad98
14 changed files with 33 additions and 25 deletions
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4
src/compiler/checker.ts
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@@ -4330,8 +4330,8 @@ module ts {
var targetType = getTypeFromTypeNode(node.type);
if (fullTypeCheck && targetType !== unknownType) {
var widenedType = getWidenedType(exprType);
if (!(isTypeAssignableTo(exprType, targetType) || isTypeAssignableTo(targetType, widenedType))) {
checkTypeAssignableTo(targetType, widenedType, node, Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other_Colon, Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other);
if (!(isTypeAssignableTo(targetType, widenedType))) {
checkTypeAssignableTo(exprType, targetType, node, Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other_Colon, Diagnostics.Neither_type_0_nor_type_1_is_assignable_to_the_other);
}
}
return targetType;