docs: function(size) {
      size = size || 1;
  
      var numChunks = Math.ceil(this.length / size);
      var result = new Array(numChunks);
  
      for (var i = 0, index = 0; i < numChunks; i++) {
        result[i] = chunkSlice(this, index, index += size);
      }
  
      return result;
    }