node js dummy

dummy.js

const express = require('express')
const constants = require('../app/constants')
var dummy = express.Router()
const fs = require('fs')

function tofile(content, fname){
    return fs.writeFile(fname, content, err => {
        if (err) {
            console.error(err)
            return
        }
        //file written successfully
    })
}

dummy.get("/:type", function(req, res, next){
    const typ = req.params.type;

    switch(typ){
        case "t1":
            const content = 'Test2'
            tofile("content", 'dummy/test.txt')
            res.send(content)
        break;
        case "req2file":
            const datax = req.query
            console.log(datax)
            tofile(JSON.stringify(datax) , 'dummy/req2file.txt')
            // console.log(JSON.stringify(datax) )
            res.send(datax)
        break;
        default:
            res.send("No type!")

    }

})

module.exports = dummy