Fixed an issue with self-referential awaited union #49677
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Andarist
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Jun 24, 2022
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| !!! error TS2322: Type 'SimpleType' is not assignable to type 'T'. | ||
| !!! error TS2322: 'T' could be instantiated with an arbitrary type which could be unrelated to 'SimpleType'. | ||
| !!! related TS6502 tests/cases/compiler/genericFunctionAgainstUnresolvableSelfReferencingAwaitedUnion.ts:3:20: The expected type comes from the return type of this signature. |
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Thanks for sending this; do you mind adding the test from #49723 too? Doing so will file the error message this PR adds, in my testing. LGTM, otherwise. |
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Thanks for adding the test; did you intend to delete the test from #49646? |
Andarist
commented
Jun 29, 2022
| export async function myFunction(param: T1) { | ||
| const awaited = await param | ||
| ~~~~~~~~~~~ | ||
| !!! error TS1062: Type is referenced directly or indirectly in the fulfillment callback of its own 'then' method. |
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@jakebailey I've added the test case from your issue - note that the reported error is slightly different from the other one but I assume that's expected (since the other one was specific to generic functions and this ain't one)
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Oh, nevermind, it's just one file now. |
jakebailey
approved these changes
Jun 29, 2022
This was referenced Oct 13, 2022
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fixes #49646