@muban/muban/dist/esm/lib/utils/simple-memo.js

Writing components for server-rendered HTML

/* eslint-disable @typescript-eslint/no-explicit-any */
const memory = new WeakMap();
/**
 * Memo function which does one thing
 * - only uses first parameter as the cache-key
 * - only accepts objects as cache-key (because of the `WeakMap`)
 * @param fn
 */
export function simpleMemo(fn) {
    return function (...rest) {
        const key = rest[0];
        if (memory.has(key)) {
            return memory.get(key);
        }
        const result = fn.apply(this, rest);
        memory.set(key, result);
        return result;
    };
}