Rust Compiler

This directory contains the implementation of the Relay compiler in Rust. The Relay compiler was previously written in JavaScript and was re-written in Rust for several benefits including:

• Fast compilation that scales to massive projects like the new facebook.com.
• Improved developer experience by offering better error reporting and watch mode.
• TypeScript support built in (works for extraction, but we'd like to also bundle type generation).
• Pre-built binaries for all platforms (Windows, Linux, macOS) distributed via npm, so no Rust compilation should be needed for the typical workflow.