code: function makeDecoder(chunkType) {
  	if (chunkType === BUFFER) {
  		return function (buf) {
  			return buf.toString('utf8');
  		};
  	}
  	if (isnode) {
  		return function (a) {
  			return new Buffer(a).toString('utf8');
  		};
  	}
  	var decoder = null;
  	return function (buf) {
  		if (!decoder) {
  			decoder = new TextDecoder();
  		}
  		return decoder.decode(buf);
  	};
  }
docs: Makes UTF8 decoding function.
  @param  {Boolean} [chunkType] Specifies type of input chunks.
  @return {Function} The function to decode byte chunks.