How to pass socket callback to other modular events-CodePudding

I have a question to which I am trying to figure out the answer

For example, I structured the sockets like this

const io = require('socket.io')(server, {
    cors: {
        origin: "*"
    }
});

// sockets events
const onConnection = require('./sockets/events/connection');

io.on("connection", onConnection);

const search = require('./s');earch

const onConnection = async (socket) => {
    console.log(`Client connected ${socket.id}`);

    socket.on('search', search);

    socket.on('disconnect', (reason) => {
        console.log(`Client disconnected with reason: ${reason}`)
    })
};

module.exports = onConnection;

But in that search function, I would also like to pass the "socket" argument so that I can still have access to the socket functions

const onSearch = async (socket) => {
    console.log(socket);
    console.log(500);
}
  
module.exports = onSearch;

So my question is when I access that event (search) in socket.on, how could I send the socket further?

I tried to pass as a function

socket.on('search', metasearch(socket);

But it didn't work..

CodePudding user response：

I'm not familiar with socket.io but you should be able to refactor the callback like this:

const onSearch = (socket) => async (data) => {
    console.log(socket);
    console.log(500);
}
  
module.exports = onSearch;

and then

socket.on('search', search(socket));

CodePudding user response：

Besides the above approach, if you want to avoid creating wrapper functions one thing you can do is simply create non arrow functions and make use of this.

// onConnection method which attaches listeners
//socket is available here

const onConnection = async (socket) => {
...
socket.on('search', metasearch);
...
}

function metasearch (args) {
console.log(this.id);
};