how to run a script with custom values?

December 5, 2022

My script prints text to the console every second and stops after 4 seconds. I need to make sure that the interval and stop values can be specified when the file is run. The file should be run with this command: node index.js -i 1000 -t 4000. How can i do this?

app.get("/", (req, res) => {
  function outputText() {
    console.log("Some Text");
  }
  const interval = setInterval(outputText, 1000);
  setTimeout(() => {
    clearInterval(interval);
  }, 4000);

  res.send();
});

app.listen(3000);

>Solution :

You can use the npm package yargs

const yargs = require('yargs/yargs')
const { hideBin } = require('yargs/helpers');

const argv = yargs(hideBin(process.argv)).argv;

console.log('Interval', argv.i);
console.log('Stop', argv.t);