展开 Typescript 类型定义

[Silence-dream]

type Expand<T> = T extends infer O ? { [K in keyof O]: O[K] } : never;

type ExpandRecursively<T> = T extends object
  ? T extends infer O ? { [K in keyof O]: ExpandRecursively<O[K]> } : never
  : T;

[Silence-dream]

ts 类型重写

export declare type Overwrite<T, U> = T extends unknown ? Pick<T, Exclude<keyof T, keyof U>> & U : never;