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