mingzhans
mingzhans
``` type Shift = T extends [any, ...infer Args] ? [ ...Args] : never// 你的实现代码 // 测试用例 type S0 = Shift // [2,3] type S1 = Shift //[number,boolean] ```
``` type Foo = { a: number; b?: string; c: boolean; } type PickAll = { [p in keyof T]: T[p] } type SetOptional = PickAll // 测试用例 type SomeOptional...
``` type Includes = E extends T[number] ? true : false// 你的实现代码 type I0 = Includes // false type I1 = Includes // true type I2 = Includes // true...
``` type Tail = T extends [] ? [] : (T extends [any, ...infer Rest] ? Rest : never) // 你的实现代码 // 测试用例 type T0 = Tail // [] type...
``` type Responder = { text?: () => string; json?: () => string; secure?: boolean; ee: number }; type SetRequired = Required; type GetAtleast = KeysType extends infer A |...
``` declare const config: Chainable type Chainable = { option(key: K, value: V): Chainable get(): { [p in keyof T]: T[p] } } const result = config .option('age', 7) .option('name',...
``` type Unshift = T extends [...infer R] ? [E, ...R] : never// 你的实现代码 // 测试用例 type Arr0 = Unshift; // [1] type Arr1 = Unshift; // [0, 1, 2,...
``` type Falsy = { [p in PropertyKey]: never } | [] | '' | "" | false | 0 | undefined | null type AnyOf = T extends [infer...
``` type Replace< S extends string, From extends string, To extends string > = S extends `${infer A}${From}${infer B}` ? `${A}${To}${B}` : S// 你的实现代码 type R0 = Replace // ''...
``` type User = { id: number; kind: string; }; type User = { id: number; kind: string; }; // 第一种 function makeCustomer(u: T): T { return { ...u, id:...