feat(ui): export component prop types

src/storybook.test.ts

@@ -131,12 +131,32 @@ describe("Storybook inventory", () => {
 
       for (const componentName of componentsByDomain.get(domain) ?? []) {
         expect(domainIndexSource).toContain(
-          `export { ${componentName} } from "./${componentName}";`,
+          `export * from "./${componentName}";`,
         );
       }
     }
   });
 
+  test("exports component prop interfaces through grouped package entrypoints", () => {
+    for (const component of componentInventory()) {
+      const source = readFileSync(component.path, "utf8");
+      const propTypeName = `${component.name}Props`;
+
+      if (!source.match(new RegExp(`export\\\\s+(interface|type)\\\\s+${propTypeName}\\\\b`))) {
+        continue;
+      }
+
+      const domainIndexSource = readFileSync(
+        join(componentsDir, component.domain, "index.ts"),
+        "utf8",
+      );
+
+      expect(domainIndexSource).toContain(
+        `export * from "./${component.name}";`,
+      );
+    }
+  });
+
   test("keeps Storybook fixtures generic and content-free", () => {
     const storyText = readdirSync(storiesDir)
       .filter((filename) => filename.endsWith(".tsx") || filename.endsWith(".ts"))