code: function baseIndexOf(array, value, fromIndex) {
      var index = (fromIndex || 0) - 1,
          length = array ? array.length : 0;
  
      while (++index < length) {
        if (array[index] === value) {
          return index;
        }
      }
      return -1;
    }
docs: /*-------------------------------------------------------------------------- 
  The base implementation of `_.indexOf` without support for binary searches
  or `fromIndex` constraints.
  
  @private
  @param {Array} array The array to search.
  @param {*} value The value to search for.
  @param {number} [fromIndex=0] The index to search from.
  @returns {number} Returns the index of the matched value or `-1`.