TypeScript/tests/baselines/reference/indexedAccessRetainsIndexSignature.types
Anders Hejlsberg c456bbd466
Support re-aliasing of type alias instantiations (#42284)
* New aliases for type alias instantiations

* New aliases for conditional, mapped, and anonymous object type instantiations

* Accept new baselines

* Fix issues with re-aliasing

* Accept new baselines
2021-01-11 13:29:46 -10:00

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=== tests/cases/compiler/indexedAccessRetainsIndexSignature.ts ===
type Diff<T extends keyof any, U extends keyof any> =
>Diff : Diff<T, U>
({ [P in T]: P } & { [P in U]: never } & { [x: string]: never })[T]
>x : string
type Omit<U, K extends keyof U> = Pick<U, Diff<keyof U, K>>
>Omit : Omit<U, K>
type Omit1<U, K extends keyof U> = Pick<U, Diff<keyof U, K>>;
>Omit1 : Omit1<U, K>
// is in fact an equivalent of
type Omit2<T, K extends keyof T> = {[P in Diff<keyof T, K>]: T[P]};
>Omit2 : Omit2<T, K>
type O = Omit<{ a: number, b: string }, 'a'>
>O : O
>a : number
>b : string
export const o: O = { b: '' }
>o : O
>{ b: '' } : { b: string; }
>b : string
>'' : ""