How to write cronjobs in seperate file nodejs - node.js

Question

I want to write a cron job on node.js which runs every minute. The tutorials that I viewed online all showed the cron job being written in the "App.js" or "server.js" file which is the main file on nodejs.
I want to seperate this into another file for better readability but I cannot find any solution or example online. please help.
I want to write this in a separate file just like we write our routes.
const cron = require("node-cron");
cron.schedule("* * * * *", function() {
console.log("running a task every minute");
});

Answer 1

You can create and export javascript modules elsewhere in your express/node.js app like this:
app.js
const express = require('express');
const app = express();
const port = 5000;
require('./tasks/tasks')();
app.listen(port, () => {
console.log(`App listening at http://localhost:${port}`)
});
tasks.js
const cron = require('node-cron');
module.exports = () => {
cron.schedule('* * * * *', () => {
console.log('running a task every minute');
});
}
Terminal:
[nodemon] starting `node start app.js`
App listening at http://localhost:5000
running a task every minute
File Structure:
/tasks
tasks.js
app.js

Answer 2

yes. you can write your cron-job in separte file. when starting the server, you can invoke your cron job, like in your app.js or server.js. you just export your cron job file & impore here
import cronJob from "../filename.js"
server.listen(3000, () => {
cronJob.start();
});

Answer 3

node-cron emulates, rather than uses, the UNIX / Linux / FreeBSD cron subsystem driven by crontab file entries. node-cron projects the illusion that functions in a running nodejs instance can be scheduled as if they were executable programs.
If you want to schedule a different nodejs program as a cron job, don't use node-cron, use cron. Put an entry in the OS's crontab mentioning the nodejs program.