Automatically get types from memoized function

[fregante]

It looks like the types of fn are lost but something like this seems to keep them correctly, including any overloads:

const pMemoize: <T = VoidFunction>(fn: T) => T;

Same for mem. Solution:

declare module 'mem' {
	function mem<T = VoidFunction>(fn: T): T;
	export = mem;
}

[sindresorhus]

// @BendingBender