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ts-toolbelt

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TypeScript's largest utility library

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import { Depth } from '../Object/_Internal'; import { BuiltIn } from '../Misc/BuiltIn'; import { Has } from '../Union/Has'; import { If } from './If'; import { Key } from './Key'; /** * @hidden */ export declare type ComputeRaw<A extends any> = A extends Function ? A : { [K in keyof A]: A[K]; } & unknown; /** * @hidden */ declare type ComputeFlat<A extends any> = A extends BuiltIn ? A : A extends Array<any> ? A extends Array<Record<Key, any>> ? Array<{ [K in keyof A[number]]: A[number][K]; } & unknown> : A : A extends ReadonlyArray<any> ? A extends ReadonlyArray<Record<Key, any>> ? ReadonlyArray<{ [K in keyof A[number]]: A[number][K]; } & unknown> : A : { [K in keyof A]: A[K]; } & unknown; /** * @hidden */ declare type ComputeDeep<A extends any, Seen = never> = A extends BuiltIn ? A : If<Has<Seen, A>, A, (A extends Array<any> ? A extends Array<Record<Key, any>> ? Array<{ [K in keyof A[number]]: ComputeDeep<A[number][K], A | Seen>; } & unknown> : A : A extends ReadonlyArray<any> ? A extends ReadonlyArray<Record<Key, any>> ? ReadonlyArray<{ [K in keyof A[number]]: ComputeDeep<A[number][K], A | Seen>; } & unknown> : A : { [K in keyof A]: ComputeDeep<A[K], A | Seen>; } & unknown)>; /** * Force TS to load a type that has not been computed (to resolve composed * types that TS haven't fully resolved, for display purposes mostly). * @param A to compute * @returns `A` * @example * ```ts * import {A} from 'ts-toolbelt' * * type test0 = A.Compute<{x: 'x'} & {y: 'y'}> // {x: 'x', y: 'y'} * ``` */ export declare type Compute<A extends any, depth extends Depth = 'deep'> = { 'flat': ComputeFlat<A>; 'deep': ComputeDeep<A>; }[depth]; export {};