TypeScript builds a synthetic signature for every JSX intrinsic element and
computes a module specifier for @types/react (index and jsx-runtime) per
importing file. computeModuleSpecifiers visits every symlinked location of
that file and scans all 491 tsconfig paths for each; pnpm gave 65 packages
their own node_modules/@types/react link. Client test-aggregate Check
followed 26.9 + 0.494 * N seconds for N locations.
- Remove @types/react and @types/react-dom from all 67 workspace manifests
and declare them once in the root devDependencies; packages keep declaring
the react and react-dom they import (ui-slots gains react).
- verify-package-dependencies rejects either package in any workspace
manifest and requires the root declaration, so a new package cannot add
the link back.
- packages/client/AGENTS.md states the rule.
Client aggregate Check 59.1 s -> 26.5 s; the 76 client-only package
projects 54-57 s -> ~44 s wall. File set (2,613) and diagnostics unchanged.
Refs #5852
imccyu
1c6078dca6