fix: export OptionalFetcher type from start-client-core by dccarmo · Pull Request #4001 · TanStack/router

dccarmo · 2025-04-15T17:14:33Z

When creating a server function handler called getAuthSession:

export const getAuthSession = createServerFn().handler(async () => {
  ...
});

I was getting this error:

The inferred type of 'getAuthSession' cannot be named without a reference to '../../../../node_modules/@tanstack/start-client-core/dist/esm/createServerFn'. This is likely not portable. A type annotation is necessary.

Exporting OptionalFetcher fixes this error.

nx-cloud · 2025-04-15T21:23:52Z

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☁️ Nx Cloud last updated this comment at 2025-04-19 18:13:02 UTC

pkg-pr-new · 2025-04-15T21:26:12Z

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commit: 0616b7f

I hit a similar issue to #4001 (ts(2742)) but on pnpm, which requires exporting the types all the way to the module that gets directly imported by the application according to microsoft/TypeScript#47663 (comment). This fix resolves this issue.

fix: export OptionalFetcher type from start-client-core

a7fff01

SeanCassiere approved these changes Apr 15, 2025

View reviewed changes

SeanCassiere added 2 commits April 17, 2025 19:53

Merge branch 'main' into main

d2d2565

Merge branch 'main' into main

0616b7f

SeanCassiere merged commit 2760a56 into TanStack:main Apr 19, 2025
6 of 9 checks passed

IderAghbal mentioned this pull request Jun 2, 2025

fix: export OptionalFetcher and RequiredFetcher types #4297

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fix: export OptionalFetcher type from start-client-core#4001

fix: export OptionalFetcher type from start-client-core#4001
SeanCassiere merged 3 commits intoTanStack:mainfrom
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