export interface MemoizeCache<T> {
    has: (key: unknown) => boolean;
    set: (key: unknown, value: {
        data: T;
        date: number;
    }) => this;
    get: (key: unknown) => {
        data: T;
        date: number;
    };
}
export interface MemoizeOptions<T> {
    maxAge?: number;
    cacheKey?: (args: unknown[]) => string;
    cache?: MemoizeCache<T>;
}
/**
 * Memoize the output of a function.
 * @link https://js-toolkit.studiometa.dev/utils/memoize.html
*/
export declare function memoize<T extends (...args: unknown[]) => unknown>(fn: T, { maxAge, cacheKey, cache, }?: MemoizeOptions<ReturnType<T>>): (...args: Parameters<T>) => ReturnType<T>;