Using PM2 with transpilers

This tutorial will show you how to use pm2 with transpilers.

We highly don’t recommend to use this in production as it slows down your app. In that case, your app must be bundled i.e. transpiled from the source to get a pre-processed version of your app.

Typescript

## Add the new typescript dependency in PM2:
pm2 install typescript

## Start app.ts in watch & restart:
pm2 start app.ts --watch

Babel

## Install the Babel CLI globally:
npm install -g babel-cli

## Start pm2 with the Babel CLI binary in watch mode:
pm2 start --watch --interpreter babel-cli app.js

Or, you can create an other file, which requires the transpiler and your app:

// index.js
require('babel-register');
require('./app.js');

Then, run:

pm2 start --watch index.js

The cluster mode is only available with the second option.

Coffee-script

## Install Coffee Script at PM2 level:
pm2 install coffeescript

## Start pm2 with coffee binary in watch mode:
pm2 start app.coffee

Or, you can install the coffeescript dependency via npm install coffeescript and require it in your code:

// index.js
require('coffee/register');
require('./app.coffee');

Then, run:

pm2 start index.js

The cluster mode is only available with the second option.