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Specifically test for 'void' to permit implementations to return more than what was guaranteed.

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This commit is contained in:
Daniel Rosenwasser 2015-12-11 15:08:30 -08:00
parent 069fada0ce
commit 9b507b7512
1 changed files with 2 additions and 1 deletions
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3
src/compiler/checker.ts
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@ -4987,7 +4987,8 @@ namespace ts {
const sourceReturnType = getReturnTypeOfSignature(erasedSource);
const targetReturnType = getReturnTypeOfSignature(erasedTarget);
if (checkTypeRelatedTo(sourceReturnType, targetReturnType, assignableRelation, /*errorNode*/ undefined)
if (targetReturnType === voidType
|| checkTypeRelatedTo(sourceReturnType, targetReturnType, assignableRelation, /*errorNode*/ undefined)
|| checkTypeRelatedTo(targetReturnType, sourceReturnType, assignableRelation, /*errorNode*/ undefined)) {
const anyReturningSource = cloneSignature(erasedSource);
const anyReturningTarget = cloneSignature(erasedTarget);