facebook/react's Claude Code Plugin for the Compiler Rust Port

What is the facebook/react plugin, actually

facebook/react is the source repository for React itself, the JavaScript library behind most of the interactive web (247,896 GitHub stars, by Flowy's own count). Buried inside that repository, in its compiler subproject, is a small Claude Code plugin: 14 skills and 4 agents that React's own contributors use while working on the React Compiler. Most of them exist for one specific job, the ongoing effort to rewrite the compiler from TypeScript into Rust, one pass at a time.

This is not a plugin that teaches React or helps you write application code. It automates an internal engineering workflow, so if you are not working inside the compiler's own source tree, there is nothing here for you to invoke.

What is inside

The 14 skills split roughly into three jobs.

Everyday compiler work: test runs the compiler's fixture test suite, verify and compiler-verify check that a change still produces correct compiled output, fix addresses a failing case, compiler-review reviews a change before it lands, and compiler-commit wraps a change up for version control. extract-errors pulls together the compiler's own error and diagnostic reporting.

Rust port work: rust-port-status reports what has already been ported and what remains, by reading the project's planning documents and recent commit history. compiler-port and compiler-orchestrator drive the actual work of moving passes across, and plan-update keeps the planning documents current as that work lands.

Supporting skills: feature-flags and flags manage the experimental flags and pragmas the compiler reads, and flow works with the pipeline of passes a piece of code moves through during compilation.

The 4 agents are the specialists the orchestration skills delegate to. port-pass does the actual work of moving a single compiler pass from TypeScript to Rust: setting up the crate, writing the implementation, wiring it into the pipeline, and looping on test fixtures until they all pass. analyze-pass-impact works out how a cross-cutting change touches each of the compiler's passes, so plan-update can research the whole compiler at once instead of one pass at a time. investigate-error root-causes a compiler failure by minimizing a test fixture and comparing output pass by pass. compiler-review also exists as an agent alongside the skill of the same name, for a deeper look at a proposed change.

When it pays off, and when it doesn't

This plugin only does something if you have the React Compiler's source checked out and are actively working on it, most likely on the Rust port. If you are building a React application, installing it gives you nothing: none of its 18 components touch application code, JSX, or hooks in the sense an app developer means those words. They touch the compiler's own internals, its passes, and its Rust crates. Flowy indexes it as the maintainer tool it is, not as something a typical React developer would reach for.

How do I install it

Flowy indexes facebook/react from its public GitHub repository. Because this plugin lives inside a specific subdirectory of a very large monorepo, check the repository first to confirm you are looking at the compiler tooling and not just the top-level React library. Install from the listing page linked at the top of this guide, and the skills and agents above become available in that session.