1var castPath = require('./_castPath'),
2    isArguments = require('./isArguments'),
3    isArray = require('./isArray'),
4    isIndex = require('./_isIndex'),
5    isLength = require('./isLength'),
6    toKey = require('./_toKey');
7
8/**
9 * Checks if `path` exists on `object`.
10 *
11 * @private
12 * @param {Object} object The object to query.
13 * @param {Array|string} path The path to check.
14 * @param {Function} hasFunc The function to check properties.
15 * @returns {boolean} Returns `true` if `path` exists, else `false`.
16 */
17function hasPath(object, path, hasFunc) {
18  path = castPath(path, object);
19
20  var index = -1,
21      length = path.length,
22      result = false;
23
24  while (++index < length) {
25    var key = toKey(path[index]);
26    if (!(result = object != null && hasFunc(object, key))) {
27      break;
28    }
29    object = object[key];
30  }
31  if (result || ++index != length) {
32    return result;
33  }
34  length = object == null ? 0 : object.length;
35  return !!length && isLength(length) && isIndex(key, length) &&
36    (isArray(object) || isArguments(object));
37}
38
39module.exports = hasPath;
40