@remcostoeten/fync/dist/src/core/http/memoize.js

A unified TypeScript library for easy access to popular APIs (GitHub, Spotify, GitLab, etc.)

export function memoize(fn, getKey, options = {}) {
    const cache = new Map();
    function memoizedFunction(...args) {
        const key = getKey ? getKey(...args) : JSON.stringify(args);
        const now = Date.now();
        const cached = cache.get(key);
        if (cached && (!options.ttl || now - cached.timestamp < options.ttl)) {
            return cached.value;
        }
        const result = fn(...args);
        cache.set(key, { value: result, timestamp: now });
        if (options.ttl) {
            setTimeout(function cleanupExpiredEntry() {
                const entry = cache.get(key);
                if (entry && options.ttl && now - entry.timestamp >= options.ttl) {
                    cache.delete(key);
                }
            }, options.ttl);
        }
        return result;
    }
    return memoizedFunction;
}
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