requireUncached
Loads a module after removing it from the cache (if exists).
- Use deleteto remove the module from the cache (if exists).
- Use require()to load the module again.
const requireUncached = module => {
  delete require.cache[require.resolve(module)];
  return require(module);
};
const fs = requireUncached('fs'); // 'fs' will be loaded fresh every time