docs: function concat(list) {
    if (list.some(isStream)) {
      return concatStream(list);
    }
    if (typeof list[0] === 'string') {
      return list.join('');
    }
    if (NodeBuffer && NodeBuffer.isBuffer(list[0])) {
      return NodeBuffer.concat(list);
    }
    return concatUint8Array(list);
  }