Park June Chul pjc0247

This is a cat.

Willmo36 / pattern.ts

Last active January 27, 2022 05:32

TypeScript - Generic pattern matching

	type UnionToIntersection<U> = (U extends any ? (k: U) => void : never) extends (k: infer I) => void ? I : never;
	type Union<T extends string> = Record<T, string>;
	type MatchHandlers<T extends string, P extends Union<T>, R> = P extends any ? Record<P[T], (p: P) => R> : never;

	type DefaultedOrFullHandlers<T extends string, P extends Union<T>, R> =
	\| (Partial<MatchHandlers<T, P, R>> & { otherwise: () => R })
	\| UnionToIntersection<MatchHandlers<T, P, R>>;

	/**
	* Create a match function based on the given tag property.

anonymous / gist:4943405

Created February 13, 2013 09:45

모그님의 위대한 업적을 기리기위해 개사를 하여보았습니다. 원곡 : 장군님 축지법 쓰신다