Typescript

20210209

npm install -g typescript
npm install -D webpack@4.41.5 webpack-cli@3.3.10 webpack-dev-server@3.10.2
npm install -D html-webpack-plugin@4.5.0 clean-webpack-plugin@3.0.0
npm install -D ts-loader cross-env

# yarn is better
yarn add -D typescript
yarn add -D webpack webpack-cli
yarn add -D webpack-dev-server
yarn add -D html-webpack-plugin clean-webpack-plugin
yarn add -D ts-loader
yarn add -D cross-env