咨询：Phusion Passenger是否支持带有.babelrc的Node.js运行？

Absolutely! Phusion Passenger does support running Node.js applications that use a .babelrc configuration file—you just need to make sure your project is set up to transpile code properly before Passenger executes it. Here's how to make it work smoothly:

• Pre-transpile your code with Babel (production-friendly approach)
  If you're writing modern JavaScript (ES6+), you’ll need to convert it to a version Node.js (and Passenger) can natively understand. Start by installing the necessary Babel packages:

  npm install --save-dev @babel/core @babel/cli @babel/preset-env
  

  Then add a build script to your package.json that transpiles your source code into a dist or build directory:

  "scripts": {
    "build": "babel src --out-dir dist",
    "start": "node dist/server.js"
  }
  

  Make sure your Passenger setup points to the transpiled entry file (like dist/server.js) instead of your raw source code.

• Configure Passenger to target your transpiled code
  If you’re using Passenger with Nginx or Apache, update your server config to point to the right files. For example, in an Nginx config:

  server {
    listen 80;
    server_name your-app-domain.com;
    root /path/to/your/app/dist;
    passenger_app_root /path/to/your/app;
    passenger_startup_file server.js;
    passenger_enabled on;
  }
  

• On-the-fly transpilation (development-only workaround)
  For local development, you can skip pre-building by using @babel/register to transpile code at runtime. Install it first:

  npm install --save-dev @babel/register
  

  Create a bootstrap file (like start.js) that loads Babel before your app code:

  require('@babel/register');
  require('./src/server.js');
  

  Set Passenger’s startup file to this bootstrap script. Note: This adds runtime overhead, so it’s not recommended for production.

• Double-check your .babelrc placement
  Ensure your .babelrc lives in your project’s root directory (where Passenger runs your app from) and has valid presets/plugins. A basic example:

  {
    "presets": ["@babel/preset-env"]
  }
  

The core idea here is that Passenger doesn’t interact with .babelrc directly—it just executes the Node.js code you provide. As long as you transpile your code (either pre-built or on-the-fly) to a compatible JavaScript version, Passenger will run it like any other Node.js application.

内容的提问来源于stack exchange，提问作者T. Cem Yılmaz