1
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var toArray = require('./toArray');
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2
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3
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/**
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4
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* Gets the next value on a wrapped object following the
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5
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* [iterator protocol](https://mdn.io/iteration_protocols#iterator).
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6
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*
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7
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* @name next
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8
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* @memberOf _
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9
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* @since 4.0.0
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10
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* @category Seq
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11
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* @returns {Object} Returns the next iterator value.
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12
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* @example
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13
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*
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14
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* var wrapped = _([1, 2]);
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15
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*
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16
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* wrapped.next();
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* // => { 'done': false, 'value': 1 }
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18
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*
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19
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* wrapped.next();
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20
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* // => { 'done': false, 'value': 2 }
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21
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*
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22
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* wrapped.next();
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23
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* // => { 'done': true, 'value': undefined }
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24
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*/
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25
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function wrapperNext() {
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26
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if (this.__values__ === undefined) {
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27
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this.__values__ = toArray(this.value());
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28
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}
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29
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var done = this.__index__ >= this.__values__.length,
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30
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value = done ? undefined : this.__values__[this.__index__++];
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31
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32
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return { 'done': done, 'value': value };
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33
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}
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34
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35
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module.exports = wrapperNext;
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