Add type declarations with export conditions

CLAUDE.md

@@ -109,3 +109,13 @@ bun --hot ./index.ts
 ```
 
 For more information, read the Bun API docs in `node_modules/bun-types/docs/**.md`.
+
+## Type Declarations
+
+This package exports raw `.tsx` source as the runtime entry (Bun handles it fine), but uses hand-written `.d.ts` files in `dist/` for the `types` export condition. This prevents consumers' `tsc` from type-checking our Hono JSX internals, which would fail if they use a different JSX runtime.
+
+- When adding or changing exported functions/types, update the corresponding `.d.ts` file in `dist/` by hand.
+- Do NOT add a build step to generate declarations. The `.d.ts` files are small and manually maintained.
+- `dist/index.d.ts` — main exports (`Hype` class, `HypeProps`, `SSEHandler`, re-exports from utils/layout)
+- `dist/utils.d.ts` — utility function signatures
+- `dist/layout.d.ts` — `Layout` and `ReloadScript` FC declarations

package.json

@@ -4,10 +4,17 @@
   "module": "src/index.tsx",
   "type": "module",
   "exports": {
-    ".": "./src/index.tsx",
+    ".": {
-    "./utils": "./src/utils.tsx"
+      "types": "./dist/index.d.ts",
+      "default": "./src/index.tsx"
+    },
+    "./utils": {
+      "types": "./dist/utils.d.ts",
+      "default": "./src/utils.tsx"
+    }
   },
   "files": [
+    "dist",
     "src/css",
     "src/frontend.ts",
     "src/index.tsx",