How can I run multiple npm scripts in parallel?

Question

In my package.json I have these two scripts:

  \"scripts\": {
    \"start-watch\": \"nodemon run-babel index.js\",
    \"wp-server\": \"webpack-         


        

Answer 1

I've checked almost all solutions from above and only with npm-run-all I was able to solve all problems. Main advantage over all other solution is an ability to run script with arguments.

{
  "test:static-server": "cross-env NODE_ENV=test node server/testsServer.js",
  "test:jest": "cross-env NODE_ENV=test jest",
  "test": "run-p test:static-server \"test:jest -- {*}\" --",
  "test:coverage": "npm run test -- --coverage",
  "test:watch": "npm run test -- --watchAll",
}

Note run-p is shortcut for npm-run-all --parallel

This allows me to run command with arguments like npm run test:watch -- Something.

EDIT:

There is one more useful option for npm-run-all:

 -r, --race   - - - - - - - Set the flag to kill all tasks when a task
                            finished with zero. This option is valid only
                            with 'parallel' option.

Add -r to your npm-run-all script to kill all processes when one finished with code 0. This is especially useful when you run a HTTP server and another script that use the server.

  "test": "run-p -r test:static-server \"test:jest -- {*}\" --",