build: assert no aggregate-preset leak in emitted declarations

Add a post-emit regression guard to scripts/build.sh that fails the build
if any granular package's published declarations reference the aggregate
@commercetools-frontend/ui-kit preset by its bare specifier. Future-proofs
the FEC-938 declaration-emit workaround against being dropped, preconstruct
changing resolution, or a new compound component reintroducing the pattern.

Also reword the changeset to be consumer-facing.

Author: misama-ct

.changeset/dts-emit-meta-package-leak.md

@@ -4,16 +4,11 @@
 "@commercetools-uikit/view-switcher": patch
 ---
 
-fix: stop declaration emit from leaking `@commercetools-frontend/ui-kit` into published types
+fix: correct leaked type references in `Constraints`, `RadioInput`, and `ViewSwitcher` declarations
 
-The compound components (`Constraints`, `RadioInput`, `ViewSwitcher`) emitted
-`import("@commercetools-frontend/ui-kit").T...Props` in their published `.d.ts`.
-Strict consumers that install only the granular `@commercetools-uikit/*`
-packages don't have the aggregate preset, so the reference resolved to `any` —
-collapsing event-handler prop types and producing `TS7006` on a minor upgrade.
-
-The leak was triggered by `@commercetools-frontend/ui-kit` becoming a root
-`devDependency` (so the `.visualroute`/`bundlespec` fixtures resolve under
-strict pnpm), which made the bare specifier resolvable during preconstruct's
-declaration emit. The build now hides that symlink for the emit step only, so
-the correct in-package relative specifier is used. No component API changed.
+Their published `.d.ts` referenced the aggregate `@commercetools-frontend/ui-kit`
+package, which isn't installed when you depend only on the granular
+`@commercetools-uikit/*` packages. That unresolved reference collapsed the
+affected prop types to `any`, surfacing as `TS7006` errors in strict
+TypeScript setups. The declarations now use in-package relative references, so
+the prop types resolve correctly. No component API or runtime behavior changed.

scripts/build.sh

@@ -36,6 +36,19 @@ pnpm preconstruct build
 
 restore_meta_symlink
 trap - EXIT
+
+# Regression guard: assert the leak stays gone. No granular package's emitted
+# declarations should reference the aggregate `@commercetools-frontend/ui-kit`
+# preset by its bare specifier — strict consumers can't resolve it (see above).
+# Catches a future reintroduction (workaround dropped, preconstruct resolution
+# change, a new compound component). Excludes the preset's own dist.
+leaks="$(find packages -type d -name declarations -path '*/dist/*' -prune -exec grep -rl 'import("@commercetools-frontend/ui-kit")' {} + 2>/dev/null || true)"
+if [ -n "$leaks" ]; then
+  echo "ERROR: published declarations leak the @commercetools-frontend/ui-kit aggregate preset:" >&2
+  echo "$leaks" | sed 's/^/  - /' >&2
+  echo "See the FEC-938 declaration-emit workaround above in scripts/build.sh." >&2
+  exit 1
+fi
 # --- end workaround ---
 
 pnpm --filter @commercetools-frontend/ui-kit run copy-assets