Splits the experimental `react/react-compiler` rule into 24 category-specific rules matching `eslint-plugin-react-hooks` v7.
- Runs React Compiler once per file and routes structured diagnostics to each enabled rule.
- Removes `react/react-compiler` and `reportAllBailouts`, with rules categorized by user-facing lint intent.
- Adds per-rule documentation and deduplicates shared React lint URLs.
- Preserves standardized compiler diagnostics while reporting each finding under its Oxlint rule name.
Breaking change: configurations using `react/react-compiler` must migrate to the category-specific rules.
Written with Claude Code and Codex.
## Summary
Exposes the React Compiler from `oxc_transformer` behind a Cargo feature so callers no longer need a separate `oxc_react_compiler::transform` + scoping-rebuild step before transforming.
- **`oxc_transformer`**: new `react_compiler` Cargo feature (off by default) + `TransformOptions::react_compiler` field. When set, `Transformer::build_with_scoping` runs the React Compiler first (via a private `run_react_compiler` method), replacing the program and rebuilding scoping for the downstream transforms.
- **Opt-in**: the feature is **not** enabled by `oxc_transformer`'s defaults, nor by `oxc`'s `transformer`/`full` features — enabling the transformer does not pull the heavy `oxc_react_compiler` dependency. It is a separate `react_compiler` feature on `oxc` (which implies `transformer`); the napi transform binding opts in explicitly.
- **Dedupe**: removes the inline React-Compiler orchestration (and the `react_compiler_options()` hook) from `oxc`'s `CompilerInterface` and the napi transform binding; both now drive it through `TransformOptions::react_compiler`.
- **Diagnostics**: the compiler's errors and warnings are merged into `TransformerReturn::errors` (each keeps its severity; downstream filters). `compile()` reports them but no longer aborts codegen — the transformer always leaves a valid program, matching the documented "code may still be available even if there are errors" behaviour.
- **Links**: updates the React Compiler references to the merged upstream location (`react/react/tree/main/compiler`).
## Notes
Transform/codegen output is unchanged when the feature is off (the field defaults to `None` everywhere). The diagnostics behaviour change (no codegen abort) is conformance-safe — the transform-conformance harness keys off reported diagnostics, not printed output.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Closes https://github.com/oxc-project/oxc/issues/10048
Integrates the Rust port of the React Compiler ([facebook/react#36173](https://github.com/facebook/react/pull/36173)) into oxc.
## Notes (resolved)
- Published crates can't reference Git URLs, so using this from Rolldown needs the React Compiler crates on crates.io. ✅ Published as a fork at https://crates.io/crates/forked_react_compiler; this PR depends on those `forked_react_compiler*` crates so people can get earlier access.
- The React Compiler crates had no license field. ✅ The published fork carries `license = "MIT"` (per the React repo's MIT license), so Cargo Deny and Security Analysis pass.
## Benchmark
**Wall-clock overhead vs plain transform** (release `transformSync`, same `jsx: automatic`, toggling only `reactCompiler`):
| fixture | without | with | overhead |
| --- | --- | --- | --- |
| RadixUIAdoptionSection.jsx (2.5 KiB) | 0.03 ms | 1.81 ms | +1.8 ms |
| excalidraw `App.tsx` (406 KiB) | 4.09 ms | 14.49 ms | +10.4 ms (3.5×) |
So roughly a fixed ~1.8 ms floor per file plus a per-size cost — about **3.5× the transform time** on a large real-world component.
## Binary size
Linking the React Compiler pulls the whole compiler pipeline (HIR, lowering, inference, SSA, optimization, reactive scopes, validation) plus the oxc⇄Babel AST conversion into the binding. Release build of the napi transform addon (`transform.darwin-arm64.node`, `--release`, stripped), darwin-arm64:
| build | size |
| --- | --- |
| baseline (`main`) | 3.51 MiB |
| with React Compiler | 8.66 MiB |
| **delta** | **+5.14 MiB (+146%, 2.46×)** |
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