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How to create build of Your React App and server it for Forever using PM 2

Solution 1: Use Node.js's native import with pm2

You can directly use the native node command with pm2 to run the serve command. Here's how:
  1. Install serve as a local dependency if you haven't already:
    bash

    npm install serve

  2. Start the app using pm2 with node and serve:
    bash
    pm2 start "node --no-warnings --experimental-json-modules ./node_modules/.bin/serve" --name "react-app" -- -s build

Solution 2: Use a serve script in package.json
Another approach is to create a script in your package.json to run serve, and then use pm2 to start that script:
  1. Add a script to package.json: ( package.json of frontend folder ) 

    {
  "scripts": {
    "start:serve": "serve -s build"
  }
}

  2. Use pm2 to run the script:


    pm2 start npm --name "react-app" -- run start:serve

Solution 3: Using a custom script with pm2
If you want to avoid npm scripts, you can create a custom Node.js script to run serve using ES Module syntax.
  1. Create a script file named serve-app.mjs:

    import serve from 'serve';

const server = serve('build', { port: 3000 });

  2. Start the script using pm2:

    pm2 start serve-app.mjs --name "react-app"

Explanation
  • ESM vs CommonJS: serve is an ES Module, and pm2 by default runs scripts as CommonJS. You need to ensure that pm2 is aware that it should handle the script using ES Module semantics, either by using Node.js directly or by setting up your pm2 process correctly.
  • Using Node with --no-warnings: The --no-warnings flag suppresses any experimental warnings that might be shown when using ES Modules with Node.js.


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