Javascript 将值发送到另一个文件JS

我想将这两个变量的值发送到另一个js文件。我怎么做

var publicPath = path.resolve(__dirname, '/src/login');
app.use(express.static(publicPath));
app.get('/auth', function (request, response) {
    response.sendFile(path.join(__dirname + '/src/login/index.html'));   
});
var username;
var password;

app.post('/userAuth', function(request, response) {
    username = request.body.username;
    password = request.body.password;
    response.end();
});

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将函数导出到另一个文件中。假设要将数据发送到func2.js

//func2.js
    exports.login = (data) => {
        console.log(data.username);
    }

您可以从func1.js调用发送数据，如下所示

//func1.js
const func2 = require('./func2');
var publicPath = path.resolve(__dirname, '/src/login');
app.use(express.static(publicPath));
app.get('/auth', function (request, response) {
    response.sendFile(path.join(__dirname + '/src/login/index.html'));   
});
var username;
var password;

app.post('/userAuth', function(request, response) {
    username = request.body.username;
    password = request.body.password;
    var data = {
       username:username,
       password:password
    }
    func2.login(data);
    response.end();
});

---

导出另一个文件中的函数，并将数据作为参数发送到另一个js文件中的函数。你能给我举个例子吗？请参见下面的回答示例