Add regression test

This commit is contained in:
Anders Hejlsberg 2019-04-13 08:24:27 -10:00
parent b9f805f2f4
commit 2c951b3ca9

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@ -34,3 +34,8 @@ type Example<T, U> = { [K in keyof T]: K extends keyof U ? UnexpectedError<K> :
type UnexpectedError<T extends PropertyKey> = T
type NoErrorHere<T extends PropertyKey> = T
// Repro from #30331
type a<T> = T extends Array<infer U> ? U : never;
type b<T> = { [K in a<T> & keyof T ]: 42 };