Minimal webpack configuration

package.json

{
  "name": "projectTitle",
  "version": "1.0.0",
  "description": "",
  "private": true,
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "webpack-dev-server --open",
    "watch": "webpack --watch",
    "build": "webpack"
  },
  "keywords": [],
  "author": "mrouabeh",
  "license": "ISC",
  "devDependencies": {
    "css-loader": "^3.4.2",
    "node-sass": "^4.13.0",
    "sass-loader": "^8.0.1",
    "style-loader": "^1.1.2",
    "webpack": "^4.41.5",
    "webpack-cli": "^3.3.10",
    "webpack-dev-server": "^3.10.1"
  }
}

webpack.config.js

const path = require('path');

module.exports = {
	entry: './src/index.js',
	output: {
		filename: 'bundle.js',
		path: path.resolve(__dirname, 'dist')
	},
	module: {
		rules: [
			{
				test: /\.css$/,
				use: ['style-loader', 'css-loader']
			},
			{
				test: /\.s[ac]ss/,
				use: ['style-loader', 'css-loader', 'sass-loader']
			}
		]
	},
	devServer: {
		contentBase: './dist'
	}
}