A script that can be added to run before npm start or any other script to enforce a particular npm version

npmVersionCheck

const { exec } = require('child_process');

exec('npm -v', (err, stdout) => {
  if (err) throw err;
  if (parseInt(stdout) !== 8) {
    // NOTE: This can happen if you have a dependency which lists an old version of npm in its own dependencies.
    throw new Error(`[ERROR] You need npm version @8 but you have ${stdout}`);
  }
});