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Write Scala.js React apps just like you would in ES6

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What is Slinky?

Slinky is a framework for writing React apps in Scala with an experience just like using ES6.

Slinky lets you:

  • Write React components in Scala with an API that mirrors vanilla React
  • Implement interfaces to other React libraries with automatic conversions between Scala and JS types
  • Write apps for React Native, React 360, and Electron, including the ability to share code with web apps
  • Develop apps iteratively with included hot-reloading support


Slinky is split up into several submodules:

  • core contains the React.js facades and APIs for creating components and interfaces to external components
  • web contains bindings to React DOM and definitions for the HTML/SVG tag API
  • reactrouter contains bindings to React Router
  • history contains a facade for the HTML5 history API
  • native contains bindings to React Native and external component definitions for native UI elements
  • vr contains bindings to React 360 and external component definitions for VR UI elements
  • readWrite contains the Reader and Writer typeclasses used to persist state for hot reloading
  • hot contains the entrypoint for enabling hot-reloading
  • scalajsReactInterop implements automatic conversions between Slinky and Scala.js React types
  • testRenderer contains bindings to react-test-renderer for unit testing components
  • coreIntellijSupport contains IntelliJ-specific support for the @react macro annotation
  • tests contains the unit tests for the above modules (except native and vr which have local tests)
  • docs and docsMacros contains the documentation site, which is a Slinky app itself

To run the main unit tests, first install the dependencies by running npm install inside the tests folder, then from the base folder run sbt tests/test. Similarly for React Native tests, run npm install inside the native folder, then from the base folder run sbt native/test.

Note to IntelliJ IDEA users. When you try to import Slinky SBT definition in IDEA and encounter an exception like java.nio.file.NoSuchFileException: /Users/someuser/.slinkyPluginIC/sdk/192.6817.14/plugins, you should try to download required IntelliJ files for plugin subproject manually before importing:

sbt coreIntellijSupport/updateIntellij

And then import the project again.