##I used the webpack packer for this project##

First you must install all the dependencies yarn add webpack webpack-cli style-loader css-loader sass-loader node-sass extract-text-webpack-plugin@next html-webpack-plugin webpack-dev-server file-loader -D or npm i webpack webpack-cli style-loader css-loader sass-loader node-sass extract-text-webpack-plugin@next html-webpack-plugin webpack-dev-server file-loader -D

• If you need to use developent mode enter yarn dev or npm run dev
• If you need to use watch developent mode enter dev:watch or npm run dev:watch
• If you need to use production mode enter yarn build or npm run build
• If you need to use production dev-server-mode mode enter yarn start or npm run start

    "dev": "webpack --mode development",
    "dev:watch": "webpack --mode development --watch",
    "build": "webpack --mode production",
    "start": "webpack-dev-server --mode development --open"