code: function hashSet(hash, key, value) {
          hash[key] = nativeCreate && value === undefined ? HASH_UNDEFINED : value;
        }
docs: Sets the hash `key` to `value`.
  
  @private
  @param {Object} hash The hash to modify.
  @param {string} key The key of the value to set.
  @param {*} value The value to set.