In my package.json I have these two scripts:
package.json
\"scripts\": { \"start-watch\": \"nodemon run-babel index.js\", \"wp-server\": \"webpack-
npm install npm-run-all --save-dev
package.json:
"scripts": { "start-watch": "...", "wp-server": "...", "dev": "npm-run-all --parallel start-watch wp-server" }
More info: https://github.com/mysticatea/npm-run-all/blob/master/docs/npm-run-all.md