vercel build TS errors (hono/turborepo/drizzle) #13892
Description
Summary
Running vercel build results in unexpected TypeScript errors.
This is not reproducible with tsc/tsup/etc.
Also, it appears that vercel build runs my server build command in package.json, which performs tsup successfully, but then does something on top that results in the error.
Expected vs Current
Expected: the project compiles without error
Current:
Error: src/index.ts:77:37 - error TS2339: Property 'body' does not exist on type 'Response'.
77 return c.newResponse(response.body, response);
There are also a few other type issues(e.g. coming from drizzle-orm), summarised with the diff below (indicated by as any has a hack to temporarily bypass errors):
diff --git a/apps/server/src/index.ts b/apps/server/src/index.ts
index 725fd4c..afd9d37 100644
--- a/apps/server/src/index.ts
+++ b/apps/server/src/index.ts
@@ -74,7 +74,7 @@ app.use(
async (c, next) => {
const { matched, response } = await api.handler(c.req.raw);
if (matched) {
- return c.newResponse(response.body, response);
+ return c.newResponse((response as any).body, response);
}
await next();
diff --git a/packages/api/src/server/index.ts b/packages/api/src/server/index.ts
index 51c42b7..c65bf3d 100644
--- a/packages/api/src/server/index.ts
+++ b/packages/api/src/server/index.ts
@@ -68,7 +68,7 @@ export const createApi = ({
context: await createORPCContext({
db,
auth,
- headers: request.headers,
+ headers: (request as any).headers,
}),
});
},
diff --git a/packages/db/src/schemas/posts.ts b/packages/db/src/schemas/posts.ts
index 139baa6..cb9e3f4 100644
--- a/packages/db/src/schemas/posts.ts
+++ b/packages/db/src/schemas/posts.ts
@@ -5,8 +5,8 @@ import { user } from './auth';
export const post = pgTable('post', (t) => ({
id: t.uuid().primaryKey().defaultRandom(),
- title: t.varchar({ length: 256 }).notNull(),
- content: t.text().notNull(),
+ title: t.varchar({ length: 256 }).notNull() as any,
+ content: t.text().notNull() as any,
createdAt: t
.timestamp({ mode: 'string', withTimezone: true })
.notNull()
@@ -22,5 +22,5 @@ export const CreatePostSchema = v.omit(
title: v.pipe(v.string(), v.minLength(3), v.maxLength(256)),
content: v.pipe(v.string(), v.minLength(5), v.maxLength(512)),
}),
- ['id', 'createdAt', 'createdBy'],
+ ['id', 'createdAt', 'createdBy'] as any,
);Reproduction
-
Fork the rt-stack project from GitHub and connect it to Vercel
-
Run
pnpm installandvercel build -
Observe the output:
Other Information
Vercel settings:
"settings": {
"createdAt": 1757251260212,
"framework": "hono",
"devCommand": null,
"installCommand": null,
"buildCommand": null,
"outputDirectory": null,
"rootDirectory": "apps/server",
"directoryListing": false,
"nodeVersion": "22.x"
}
The default build command (from vercel preview) appears to be:
cd ../.. && turbo run build --filter={/apps/server}...
Although I've also tried changing it to
pnpm build --filter=server
Or even pnpm build, but the result is the same.
I've also tried things like adding
export const config = {
runtime: 'nodejs',
};although it doesn't change anything.
Issue reported by another user (NOTE: no new information, just for reference):