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Merge pull request #19230 from Microsoft/fix18186

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Do not reduce subtypes of awaited union type
This commit is contained in:
Ron Buckton
2017-10-16 15:17:30 -07:00
committed by GitHub
parent 169b8e436a 9563246993
commit 06fd5e0bfe
5 changed files with 252 additions and 1 deletions
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2
src/compiler/checker.ts
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@@ -19686,7 +19686,7 @@ namespace ts {
return undefined;
}
return typeAsAwaitable.awaitedTypeOfType = getUnionType(types, /*subtypeReduction*/ true);
return typeAsAwaitable.awaitedTypeOfType = getUnionType(types);
}
const promisedType = getPromisedTypeOfPromise(type);