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npm init -y

npm install --save-dev webpack webpack-cli

npm i –save-dev react react-dom

npm install --save-dev @babel/core babel-loader @babel/preset-env @babel/preset-react

npm install --save-dev webpack webpack-cli webpack-dev-server babel-loader @babel/core @babel/preset-env style-loader css-loader postcss postcss-loader postcss-preset-env