Implementing chat commands with acknowledgments

In addition to sending and receiving messages, chat apps often offer a way to send commands to the client and/or server. For example, we could send a /clear command to clear our local messages list. Or we could send a /rooms command to get a list of rooms that we are in. Follow these steps to implement chat commands:

1. Edit src/hooks/useChat.js and adjust the sendMessage function inside it. First, let’s make it an async function:

     async function sendMessage(message) {

2. Replace the contents of the function with the following. We first check whether the message starts with a slash (/). If so, then we get the command by removing the slash and use a switch statement:

       if (message.startsWith('/')) {
         const command = message.substring(1)
         switch (command) {

3. For the clear command, we simply set the array of messages...