Function hasPath

test-app/public/sinon.js:16750–16770

* 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

(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));
        }
    
        /**
         * Initializes an array clone.