Build you Koa apps using JSX.
Documents are avaliable at ksryy.github.io/jsx-koa
First, install all dependencies (Recommended package manager is Yarn) :
yarn install
# also possible using npm
npm install
Then, start the development server:
yarn watch
# or npm
npm run watch
When you modify src/index.ts
or any revelant files, the server will automatically rebuilds the whole thing.