script example to run webpack on prod and dev

package.json

"scripts": {
    "build": "npm run clean && npm run compile",
    "compile": "NODE_ENV=production webpack --config ./webpack.config.js --progress",
    "clean": "rm -rf ./build/bundle*.js",
    "sass-compile": "node-sass dist/scss -o dist/css",
    "webpack": "webpack-dev-server --config ./webpack.dev.config.js --watch --open",
    "start": "yarn run sass-compile && concurrently --kill-others \"yarn run sass-compile --watch\" \"yarn run webpack\"",
    "test": "eslint **/*.js"
  },