@tangelo/tangelo-configuration-toolkit/src/lib/memoize.js

Tangelo Configuration Toolkit is a command-line toolkit which offers support for developing a Tangelo configuration.

/**
 * Memoizes a function by caching its results based on the arguments.
 * @param {Function} fn - The function to be memoized.
 * @returns {Function} - The memoized function.
 */
module.exports = function memoize(fn) {
  let cache = {};

  /**
   * The memoized function that caches the results of the original function based on its arguments.
   * @param {...*} args - The arguments to be passed to the original function.
   * @returns {*} - The result of the original function.
   */
  const cachedfn = (...args) => {
    const key = JSON.stringify(args);
    cache[key] ??= fn(...args);
    return cache[key];
  };

  /**
   * Clears the cache of the memoized function.
   */
  cachedfn.clear = () => {
    cache = {};
  };

  return cachedfn;
};