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Design LimitationConstraints of the existing architecture prevent this from being fixedConstraints of the existing architecture prevent this from being fixed
Description
TypeScript Version: 2.8.0-dev.20180217
Search Terms:
- "is referenced directly or indirectly in its own type annotation"
Code
type Flatten<T> = {
'1': Flatten<T extends Array<infer U> ? U : T>;
}[T extends number ? '1' : '1'];
(as mentioned in #21613)
Expected behavior: ok
Actual behavior:
error TS2502: ''1'' is referenced directly or indirectly in its own type annotation.
Playground Link: needs 2.8, playground is on 2.7
Related Issues: #6230
I saw similar issues on other types, though the greatest common denominator appeared to be recursion + conditional types (?).
luthfianto
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Design LimitationConstraints of the existing architecture prevent this from being fixedConstraints of the existing architecture prevent this from being fixed