In Node.js it's possible to respond to SIGTERM signal events.

From the official documentation:

function handle(signal) {
  console.log(`Received ${signal}`);
}

process.on('SIGTERM', handle);

Is it necessary or advisable to terminate the process with process.exit() in the event handler?

For example:

async function closeGracefully() {
  await closeDbConnection();
  await stopApplication();
  process.exit();
}

process.on('SIGTERM', closeGracefully);