Check installed version of node.js before running npm start or npm install

checkNodeVersion.js

// in package.json
/*
{
  "engines": {
      "node": ">=16",
      "npm": ">=7"
  },
  "scripts": {
      "preinstall": "node checkNodeVersion",
      "prestart": "node checkNodeVersion",
      ...
  }
}
*/

const pjson = require('./package.json');
const WANTED_VERSION = pjson.engines.node.match(/[0-9].*/)[0]; // or use your number

const result = process.versions;
if (result && result.node) {
    if (parseInt(result.node) >= WANTED_VERSION) {
        console.log(`✨ Node Version: ${result.node}`);
    } else {
        console.log(`✋ Package installation(npm install) or Project startup command(npm start) failed due to Node Version.`);
        console.log(`Please install and use Node Version >=${WANTED_VERSION}`);
        console.log(`Your current Node Version is: ${result.node}`);
        console.log(`
To install Node v${WANTED_VERSION} run: 
nvm install v${WANTED_VERSION}
nvm use v${WANTED_VERSION}
        `);
        process.exit(1);
    }
} else {
    console.log('Something went wrong while checking Node version');
}