/**
 * Polyfill affects the global object. You must be very careful when using it.
 *
 * @example
 * ```ts
 * import "https://deno.land/x/memoization@$VERSION/polyfill.ts";
 *
 * const fib = ((num: number): number => {
 *   if (num < 2) return num;
 *
 *   return fib(num - 1) + fib(num - 2);
 * }).memo();
 *
 * fib(1000);
 * ```
 */
import { type MapLike } from "./memo.js";
declare global {
    interface Function {
        /** Returns the proxy function whose call is monitored. It calls at most once for each given arguments. */
        memo<T extends (...args: any) => any>(this: T, cache?: MapLike<object, ReturnType<T>>, keying?: (args: Parameters<T>) => unknown[]): T;
    }
}