| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = iterator; |
| |
| var _isArrayLike = require('lodash/isArrayLike'); |
| |
| var _isArrayLike2 = _interopRequireDefault(_isArrayLike); |
| |
| var _getIterator = require('./getIterator'); |
| |
| var _getIterator2 = _interopRequireDefault(_getIterator); |
| |
| var _keys = require('lodash/keys'); |
| |
| var _keys2 = _interopRequireDefault(_keys); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| function createArrayIterator(coll) { |
| var i = -1; |
| var len = coll.length; |
| return function next() { |
| return ++i < len ? { value: coll[i], key: i } : null; |
| }; |
| } |
| |
| function createES2015Iterator(iterator) { |
| var i = -1; |
| return function next() { |
| var item = iterator.next(); |
| if (item.done) return null; |
| i++; |
| return { value: item.value, key: i }; |
| }; |
| } |
| |
| function createObjectIterator(obj) { |
| var okeys = (0, _keys2.default)(obj); |
| var i = -1; |
| var len = okeys.length; |
| return function next() { |
| var key = okeys[++i]; |
| return i < len ? { value: obj[key], key: key } : null; |
| }; |
| } |
| |
| function iterator(coll) { |
| if ((0, _isArrayLike2.default)(coll)) { |
| return createArrayIterator(coll); |
| } |
| |
| var iterator = (0, _getIterator2.default)(coll); |
| return iterator ? createES2015Iterator(iterator) : createObjectIterator(coll); |
| } |
| module.exports = exports['default']; |