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define(['./_castPath', './last', './_parent', './_toKey'], function(castPath, last, parent, toKey) {
  /**   * The base implementation of `_.unset`.   *   * @private   * @param {Object} object The object to modify.   * @param {Array|string} path The property path to unset.   * @returns {boolean} Returns `true` if the property is deleted, else `false`.   */  function baseUnset(object, path) {    path = castPath(path, object);    object = parent(object, path);    return object == null || delete object[toKey(last(path))];  }
  return baseUnset;});