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Add regression test

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This commit is contained in:
Anders Hejlsberg
2019-05-22 06:54:16 -07:00
parent 8120094c81
commit 2fd4aaee92
1 changed files with 10 additions and 0 deletions
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10
tests/cases/conformance/types/keyof/keyofAndIndexedAccess2.ts
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@@ -147,3 +147,13 @@ export class c {
this["a"] = "b";
}
}
// Repro from #31385
type Foo<T> = { [key: string]: { [K in keyof T]: K }[keyof T] };
type Bar<T> = { [key: string]: { [K in keyof T]: [K] }[keyof T] };
type Baz<T, Q extends Foo<T>> = { [K in keyof Q]: T[Q[K]] };
type Qux<T, Q extends Bar<T>> = { [K in keyof Q]: T[Q[K]["0"]] };