JAVASCRIPT

Declare multiple module.exports in Node.js

//backendcontrollersuserController.js
module.export.register= async(req,res)=> {
console.log("register controller");
}
module.export.login= async(req,res)=> {
console.log("Login controller");
}

//backend
outesuserRoutes.js
const { register, login } = require('../controllers/userController')

export multiple function in node js

module.exports = {
    method: function() {},
    otherMethod: function() {},
};

Declare multiple module.exports in Node.js

module.exports = {
    method: function () {},
    otherMethod: function () {},
};

or just:
module.exports = {
    fn_name1,
    fn_name2
};

Or just:
exports.method = function() {};
exports.otherMethod = function() {};

Then in the calling script:

const myModule = require('./myModule.js');
const method = myModule.method;
const otherMethod = myModule.otherMethod;
// OR:
const {method, otherMethod} = require('./myModule.js');