1  var isIndex = require('./_isIndex');
 2  
 3  /**
 4   * The base implementation of `_.nth` which doesn't coerce arguments.
 5   *
 6   * @private
 7   * @param {Array} array The array to query.
 8   * @param {number} n The index of the element to return.
 9   * @returns {*} Returns the nth element of `array`.
10   */
11  function baseNth(array, n) {
12    var length = array.length;
13    if (!length) {
14      return;
15    }
16    n += n < 0 ? length : 0;
17    return isIndex(n, length) ? array[n] : undefined;
18  }
19  
20  module.exports = baseNth;