How to start a package.json script in pm2

Question

I want to demonise my express js graphql api server. In windows local dev, I can start my server by running this command and it works fine:

yarn dev

This start command is defined in my package.json like this:

  "scripts": {
    "dev": "cross-env NODE_ENV=development DEBUG=express:* nodemon --exec babel-node src/index.js"
  },

When I try to start this in pm2 in my linux server, I get a success like this:

latheesan@app:~/apps/tweet/server$ pm2 start yarn -- dev
[PM2] Starting /usr/bin/yarn in fork_mode (1 instance)
[PM2] Done.

However, when I type pm2 status it says error and also the display looks really odd:

I am running this on Ubuntu 16.04.

If I don't use the pm2 and just start the app in my ubuntu server with yarn dev - it runs fine.

Any ideas?

Answer 1

I have now resolved this issue.

Install the babel-node globally via: npm install -g babel-cli

Then create the pm2 config in json: pm2.json

{
    "apps": [
        {
            "name": "Tweet GraphQL Server",
            "exec_interpreter": "babel-node",
            "script": "index.js",
            "merge_logs": true,
            "cwd": "./src",
            "env": {
                "NODE_ENV": "production"
            }
        }
    ]
}

Now I can run this command to start the pm2 process: pm2 start pm2.json

Answer 2

i do this in my app like this:

in package.json:

"scripts": {
    "start": "... start application script ...",
    "start:dev": "... start application script as development mode ...",
    "pm2": "pm2 start npm --name \"CustomeNameForPM2\" -- run start --watch",
    "pm2:dev": "pm2 start npm --name \"CustomeNameForPM2\" -- run start:dev --watch"
}

now you can run pm2 easy with npm run pm2 or npm run pm2:dev

but if you like to do something better, you can read pm2 documentation and use pm2 ecosystem config file

Answer 3

Pm2 now support npm

$ pm2 start --interpreter babel-node server.js

(or)

$ pm2 start npm --start

(or)

$ pm2 start npm --name "myAPP" --start

(or)

$ pm2 start npm --name "{app_name}" --run "{script_name}"