@remcostoeten/fync
Version:
A unified TypeScript library for easy access to popular APIs (GitHub, Spotify, GitLab, etc.)
32 lines (31 loc) • 864 B
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.memoize = memoize;
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;
}