socket handlers

App.js

onReceivedMessage(mes){
  const arrMes = [{...mes.messages}];
  this.setState((previousState) => ({
    messages: GiftedChat.append(previousState.messages, arrMes),
  }));
}

onSend(messages){
  const mes = messages[0];
  const { username } = this.state;
  mes['username'] = username;
  this.socket.emit('messages',mes)
}