2016-11-14 20:54:18 -08:00
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define(['./_castPath', './isArguments', './isArray', './_isIndex', './isLength', './_toKey'], function(castPath, isArguments, isArray, isIndex, isLength, toKey) {
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2016-01-28 01:16:24 -08:00
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2015-12-16 17:53:20 -08:00
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/**
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* Checks if `path` exists on `object`.
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*
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* @private
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* @param {Object} object The object to query.
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* @param {Array|string} path The path to check.
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* @param {Function} hasFunc The function to check properties.
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* @returns {boolean} Returns `true` if `path` exists, else `false`.
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*/
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function hasPath(object, path, hasFunc) {
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2016-11-14 20:54:18 -08:00
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path = castPath(path, object);
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2016-03-26 00:00:01 -07:00
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2016-09-17 22:24:52 -07:00
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var index = -1,
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length = path.length,
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result = false;
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2016-03-26 00:00:01 -07:00
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2016-04-01 23:28:48 -07:00
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while (++index < length) {
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2016-04-19 22:17:16 -07:00
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var key = toKey(path[index]);
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2016-04-01 23:28:48 -07:00
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if (!(result = object != null && hasFunc(object, key))) {
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break;
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2015-12-16 17:53:20 -08:00
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}
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2016-04-01 23:28:48 -07:00
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object = object[key];
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}
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2016-09-17 22:24:52 -07:00
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if (result || ++index != length) {
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2016-04-01 23:28:48 -07:00
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return result;
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2015-12-16 17:53:20 -08:00
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}
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2016-10-30 20:06:57 -07:00
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length = object == null ? 0 : object.length;
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2016-04-01 23:28:48 -07:00
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return !!length && isLength(length) && isIndex(key, length) &&
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2016-08-11 23:27:31 -07:00
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(isArray(object) || isArguments(object));
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2015-12-16 17:53:20 -08:00
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}
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return hasPath;
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});
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