npm-fetch-changelog/util/memoize.mjs

fetch the changelog for an npm package from GitHub

export default function memoize(fn, resolver = first => String(first)) {
  const cache = new Map();
  return (...args) => {
    const key = resolver(...args);
    if (cache.has(key)) return cache.get(key);
    const result = fn(...args);
    cache.set(key, result);
    return result;
  };
}