Function hasPath

test/babel.js:28524–28543

* Checks if `path` exists on `object`. * * @private * @param {Object} object The object to query. * @param {Array|string} path The path to check. * @param {Function} hasFunc The function to check properties. * @returns {boolean} Returns `true` if `path` exists, else `false`.

(object, path, hasFunc)

	 * @returns {boolean} Returns `true` if `path` exists, else `false`.
	 */
	function hasPath(object, path, hasFunc) {
	  path = castPath(path, object);

	  var index = -1,
	      length = path.length,
	      result = false;

	  while (++index < length) {
	    var key = toKey(path[index]);
	    if (!(result = object != null && hasFunc(object, key))) {
	      break;
	    }
	    object = object[key];
	  }
	  if (result || ++index != length) {
	    return result;
	  }
	  length = object == null ? 0 : object.length;
	  return !!length && isLength(length) && isIndex(key, length) && (isArray(object) || isArguments(object));
	}

	module.exports = hasPath;