Why is it good ?

• Fullstack tool for CLJS
• NPM integration
• Dynamic code loading
• Importing CommonJS & ES6 modules from npm or local JavaScript files
• Ease of use
• Reliable ( no constant `lein clean` )
• Decent performance (server mode)
• Built-in testing utilities
• decent documentation

Fullstack build Tool

• Compiler
• Development
  • HUD interface
  • Hot code reload
  • Style reloader
  • Proxy
  • Reverse Proxy
  • Built-in web server
• REPL ( duh ! )

Build Targets

• Most of configurations live in build targets
• Such as:
  • :node-script
  • :browser
  • :npm-module
  • :react-native
  • ...
• Very little configuration is needed
• Caches the compilation result for each build
• New conditional readers for each target

NPM Integration

• Flawless NPM integration
• It's different from CLJS npm integration
• No need for CLJSJS anymore

Dynamic code loading

• Code splitting
• Dynamic namespace loader (different loader from cljs.loader)

Testing Utilities

• Test runner
• Dedicated targets for node-tests and karma