kakasoo

이 정도는 가뿐했다. // your answers type Shift = T extends [infer F, ...infer Rest] ? Rest : never; declare function Currying(fn: T): T extends (...params: infer Params) => infer R ? Params['length'] extends 0 ? () => ReturnType : Params['length'] extends 1 ? (p: Params[0]) => ReturnType : (p: Params[0]) => ReturnType> : never;

type SingletonizeMethod, ExcludeKeys extends keyof T> = { [key in keyof T as key extends ExcludeKeys ? never : key]: T[key] } type OmittedExcute = SingletonizeMethod; class A { execute () : OmittedExcute { return new A(); } additional () : T extends true ? OmittedExcute : A { return new A(); } }