# Handlers.js > Handlers.js is a unified and lightweight web application framework for multiple platforms. ```ts import handlerJS from 'handlers.js'; const App = new handlerJS(); App.binding( '/', App.create('ANY', async () => 'Hello World!'), ); App.useMappingAdapter(); App.listen(8080); ``` ## Installation ```bash # Use Yarn yarn add handlers.js # Use NPM npm install handlers.js ```