Function findKey

lib/utils.js:416–432

* Finds a key in an object, case-insensitive, returning the actual key name. * Returns null if the object is a Buffer or if no match is found. * * @param {Object} obj - The object to search. * @param {string} key - The key to find (case-insensitive). * @returns {?string} The actual key name if

(obj, key)

 * @returns {?string} The actual key name if found, otherwise null.
 */
function findKey(obj, key) {
  if (isBuffer(obj)) {
    return null;
  }

  key = key.toLowerCase();
  const keys = Object.keys(obj);
  let i = keys.length;
  let _key;
  while (i-- > 0) {
    _key = keys[i];
    if (key === _key.toLowerCase()) {
      return _key;
    }
  }
  return null;
}

const _global = (() => {
  /*eslint no-undef:0*/