104 lines
3.2 KiB
TypeScript
104 lines
3.2 KiB
TypeScript
// @strict: true
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// @declaration: true
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type Box<T> = { value: T };
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type Boxified<T> = { [P in keyof T]: Box<T[P]> };
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type T00 = Boxified<[number, string?, ...boolean[]]>;
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type T01 = Partial<[number, string?, ...boolean[]]>;
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type T02 = Required<[number, string?, ...boolean[]]>;
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type T10 = Boxified<string[]>;
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type T11 = Partial<string[]>;
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type T12 = Required<string[]>;
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type T13 = Boxified<ReadonlyArray<string>>;
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type T14 = Partial<ReadonlyArray<string>>;
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type T15 = Required<ReadonlyArray<string>>;
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type T20 = Boxified<(string | undefined)[]>;
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type T21 = Partial<(string | undefined)[]>;
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type T22 = Required<(string | undefined)[]>;
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type T23 = Boxified<ReadonlyArray<string | undefined>>;
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type T24 = Partial<ReadonlyArray<string | undefined>>;
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type T25 = Required<ReadonlyArray<string | undefined>>;
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type T30 = Boxified<Partial<string[]>>;
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type T31 = Partial<Boxified<string[]>>;
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type A = { a: string };
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type B = { b: string };
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type T40 = Boxified<A | A[] | ReadonlyArray<A> | [A, B] | string | string[]>;
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type ReadWrite<T> = { -readonly [P in keyof T] : T[P] };
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type T50 = Readonly<string[]>;
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type T51 = Readonly<[number, number]>;
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type T52 = Partial<Readonly<string[]>>;
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type T53 = Readonly<Partial<string[]>>;
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type T54 = ReadWrite<Required<T53>>;
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declare function unboxify<T>(x: Boxified<T>): T;
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declare let x10: [Box<number>, Box<string>, ...Box<boolean>[]];
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let y10 = unboxify(x10);
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declare let x11: Box<number>[];
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let y11 = unboxify(x11);
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declare let x12: { a: Box<number>, b: Box<string[]> };
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let y12 = unboxify(x12);
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declare function nonpartial<T>(x: Partial<T>): T;
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declare let x20: [number | undefined, string?, ...boolean[]];
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let y20 = nonpartial(x20);
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declare let x21: (number | undefined)[];
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let y21 = nonpartial(x21);
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declare let x22: { a: number | undefined, b?: string[] };
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let y22 = nonpartial(x22);
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type Awaited<T> = T extends PromiseLike<infer U> ? U : T;
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type Awaitified<T> = { [P in keyof T]: Awaited<T[P]> };
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declare function all<T extends any[]>(...values: T): Promise<Awaitified<T>>;
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function f1(a: number, b: Promise<number>, c: string[], d: Promise<string[]>) {
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let x1 = all(a);
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let x2 = all(a, b);
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let x3 = all(a, b, c);
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let x4 = all(a, b, c, d);
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}
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function f2<T extends any[]>(a: Boxified<T>) {
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let x: Box<any> | undefined = a.pop();
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let y: Box<any>[] = a.concat(a);
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}
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// Repro from #26163
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type ElementType<T> = T extends Array<infer U> ? U : never;
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type Mapped<T> = { [K in keyof T]: T[K] };
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type F<T> = ElementType<Mapped<T>>;
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type R1 = F<[string, number, boolean]>; // string | number | boolean
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type R2 = ElementType<Mapped<[string, number, boolean]>>; // string | number | boolean
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// Repro from #26163
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declare function acceptArray(arr: any[]): void;
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declare function mapArray<T extends any[]>(arr: T): Mapped<T>;
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function acceptMappedArray<T extends any[]>(arr: T) {
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acceptArray(mapArray(arr));
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}
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// Repro from #26163
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type Unconstrained<T> = ElementType<Mapped<T>>;
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type T1 = Unconstrained<[string, number, boolean]>; // string | number | boolean
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type Constrained<T extends any[]> = ElementType<Mapped<T>>;
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type T2 = Constrained<[string, number, boolean]>; // string | number | boolean
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