define(['./_baseCastPath', './isArguments', './isArray', './_isIndex', './_isKey', './isLength', './isString'], function(baseCastPath, isArguments, isArray, isIndex, isKey, isLength, isString) { /** Used as a safe reference for `undefined` in pre-ES5 environments. */ var undefined; /** * 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`. */ function hasPath(object, path, hasFunc) { if (object == null) { return false; } var result = hasFunc(object, path); if (!result && !isKey(path)) { path = baseCastPath(path); var index = -1, length = path.length; while (object != null && ++index < length) { var key = path[index]; if (!(result = hasFunc(object, key))) { break; } object = object[key]; } } var length = object ? object.length : undefined; return result || ( !!length && isLength(length) && isIndex(path, length) && (isArray(object) || isString(object) || isArguments(object)) ); } return hasPath; });