Facebook open source at F8 2017

What this post added

This post announces the open-sourcing of several key developer tools: Litho, a declarative UI framework for Android that improves scroll performance; React Fiber, a rewrite of React core for better scheduling and future innovation; Relay Modern, an updated GraphQL client framework for data-driven applications; and React VR, a library for building virtual reality experiences on the web. These contributions aim to improve app experiences for both users and engineers, enabling richer and more immersive experiences, even on low-power devices and slow networks.