1 | 'use strict';
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = createIterator;
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7 |
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8 | var _isArrayLike = require('./isArrayLike.js');
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9 |
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10 | var _isArrayLike2 = _interopRequireDefault(_isArrayLike);
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11 |
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12 | var _getIterator = require('./getIterator.js');
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13 |
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14 | var _getIterator2 = _interopRequireDefault(_getIterator);
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15 |
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16 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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17 |
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18 | function createArrayIterator(coll) {
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19 | var i = -1;
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20 | var len = coll.length;
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21 | return function next() {
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22 | return ++i < len ? { value: coll[i], key: i } : null;
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23 | };
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24 | }
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25 |
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26 | function createES2015Iterator(iterator) {
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27 | var i = -1;
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28 | return function next() {
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29 | var item = iterator.next();
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30 | if (item.done) return null;
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31 | i++;
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32 | return { value: item.value, key: i };
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33 | };
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34 | }
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35 |
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36 | function createObjectIterator(obj) {
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37 | var okeys = obj ? Object.keys(obj) : [];
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38 | var i = -1;
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39 | var len = okeys.length;
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40 | return function next() {
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41 | var key = okeys[++i];
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42 | if (key === '__proto__') {
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43 | return next();
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44 | }
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45 | return i < len ? { value: obj[key], key } : null;
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46 | };
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47 | }
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48 |
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49 | function createIterator(coll) {
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50 | if ((0, _isArrayLike2.default)(coll)) {
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51 | return createArrayIterator(coll);
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52 | }
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53 |
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54 | var iterator = (0, _getIterator2.default)(coll);
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55 | return iterator ? createES2015Iterator(iterator) : createObjectIterator(coll);
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56 | }
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57 | module.exports = exports['default']; |
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