feat(react-compiler): vendor babel-plugin-react-compiler with full test suite

.gitignore

@@ -10,6 +10,15 @@ review-*.md
 *.review.md
 *.tgz
 
+# react-compiler-oxc port tooling: temporary oracle-dump scripts that the
+# parity harness writes into packages/react-compiler/ (and elsewhere) at
+# runtime to capture TS-compiler reference output. Never commit these.
+*-oracle.mjs
+
+# Scratch fixtures from the react-compiler-oxc CFG-outline experiments.
+/example.tsx
+/example-cfg.txt
+
 # Track repository-owned agent skills, but keep other local agent state out.
 /.agents/*
 !/.agents/skills/

.prettierignore

@@ -11,5 +11,10 @@ node_modules/
 # committed file stays byte-identical to its source (no formatter round-trip).
 packages/website/public/schema/config.json
 
+# Vendored React Compiler source — kept verbatim from facebook/react in
+# upstream (Meta) style so it can be re-synced cleanly. Repo-owned config
+# files (package.json, tsconfig.json, vite.config.ts) are still formatted.
+packages/react-compiler/src/
+
 # Lockfiles handled by their own tooling
 pnpm-lock.yaml

package.json

@@ -13,7 +13,7 @@
   "scripts": {
     "dev": "turbo run dev --filter=react-doctor",
     "build": "turbo run build",
-    "test": "turbo run test --filter=react-doctor --filter=@react-doctor/core --filter=@react-doctor/api",
+    "test": "turbo run test --filter=react-doctor --filter=@react-doctor/core --filter=@react-doctor/api --filter=babel-plugin-react-compiler",
     "test:public-react-repos": "REACT_DOCTOR_PUBLIC_REPOS=1 vp test run packages/react-doctor/tests/public-react-repos.test.ts",
     "typecheck": "turbo run typecheck",
     "lint": "vp lint",
@@ -53,7 +53,9 @@
     ],
     "overrides": {
       "oxlint": "^1.66.0",
-      "oxlint-tsgolint": "^0.23.0"
+      "oxlint-tsgolint": "^0.23.0",
+      "semver": "7.7.4",
+      "@babel/types": "7.26.3"
     }
   }
 }

packages/react-compiler-oxc/.gitignore

@@ -0,0 +1,10 @@
+# Cargo build output (~GBs of artifacts).
+/target
+
+# rustfmt backups.
+**/*.rs.bk
+
+# NOTE: Cargo.lock IS intentionally committed — this crate ships a binary
+# (and the parity harness), so the lockfile is part of the reproducible build.
+# tests/fixtures/** are committed oracle reference dumps (the parity ground
+# truth) — do not ignore them.