src/index.ts(1,15): error TS2459: Module '"a/server"' declares 'FileRouter' locally, but it is not exported.

[juliusmarminge]

Repo: https://github.com/juliusmarminge/buncheeee

Reproduce

pnpm i && pnpm build

Probably some weird config option that causes this, but the types aren't getting resolved:

[huozhi]

@juliusmarminge I tested against the repo and found that you can use the following patch to get rid of the errors

diff --git a/packages/a/package.json b/packages/a/package.json
index 7adeca4..5a7b607 100644
--- a/packages/a/package.json
+++ b/packages/a/package.json
@@ -74,8 +74,7 @@
     },
     "./internal/types": {
       "types": "./dist/internal/types.d.ts",
-      "import": "./dist/internal/types.mjs",
-      "require": "./dist/internal/types.js"
+      "default": "./dist/internal/types.js"
     }
   },
   "typesVersions": {
diff --git a/packages/a/src/server.ts b/packages/a/src/server.ts
index a178b44..632eb74 100644
--- a/packages/a/src/server.ts
+++ b/packages/a/src/server.ts
@@ -76,3 +76,5 @@ export const createServerHandler = <TRouter extends FileRouter>(
 
 export const extractRouterConfig = (router: FileRouter) =>
   buildPermissionsInfoHandler({ router })();
+
+export { type FileRouter }
\ No newline at end of file

• 1st, Export the type that missing in packages/a
• 2nd, The reason I change the "./internal/types" to only having default export and types, so it will only generate one type file and TS only be confused about the types of mjs and cjs.

This will make it work, but very good feedback. I think in the future it could have more validations about types to help configure correctly