deep-jade

Where is staticFunctionMiddleware

I am trying to follow Static Server Functions, however i can't as staticFunctionMiddleware cannot be found anywhere. Is there any smart import to do? Or other library to install? Or some module augmentation?

10 Replies

fascinating-indigo•2d ago

What version are you in? The docs are for 1.132.*

deep-jadeOP•2d ago

i have those versions installed

"@tanstack/react-devtools": "^0.2.2",
"@tanstack/react-query": "^5.90.2",
"@tanstack/react-router": "^1.132.0",
"@tanstack/react-router-devtools": "^1.132.0",
"@tanstack/react-router-ssr-query": "^1.131.7",
"@tanstack/react-start": "^1.132.0",
"@tanstack/router-plugin": "^1.132.0",

"@tanstack/react-devtools": "^0.2.2",
"@tanstack/react-query": "^5.90.2",
"@tanstack/react-router": "^1.132.0",
"@tanstack/react-router-devtools": "^1.132.0",
"@tanstack/react-router-ssr-query": "^1.131.7",
"@tanstack/react-start": "^1.132.0",
"@tanstack/router-plugin": "^1.132.0",

fascinating-indigo•2d ago

I think You must install the package first, @tanstack/start-static-server-functions

deep-jadeOP•17h ago

right, it was there in the import... But now i am getting strange issue on line .middleware([staticFunctionMiddleware]) which is

Type 'FunctionMiddlewareAfterServer<{}, unknown, undefined, undefined, undefined, undefined, undefined>' is not assignable to type 'AnyRequestMiddleware | AnyFunctionMiddleware | AnyServerFn'.
  Property '[TSS_SERVER_FUNCTION_FACTORY]' is missing in type 'FunctionMiddlewareAfterServer<{}, unknown, undefined, undefined, undefined, undefined, undefined>' but required in type 'ServerFnWithTypes<any, any, any, any, any>'.

Type 'FunctionMiddlewareAfterServer<{}, unknown, undefined, undefined, undefined, undefined, undefined>' is not assignable to type 'AnyRequestMiddleware | AnyFunctionMiddleware | AnyServerFn'.
  Property '[TSS_SERVER_FUNCTION_FACTORY]' is missing in type 'FunctionMiddlewareAfterServer<{}, unknown, undefined, undefined, undefined, undefined, undefined>' but required in type 'ServerFnWithTypes<any, any, any, any, any>'.

and when trying to ignore the error and run it anyway i get error in browser's console

import_node_async_hooks.AsyncLocalStorage is not a constructor
    at @tanstack_start-static-server-functions.js?t=1759421434724&v=cb209fed:1096:20

The above error occurred in the <Lazy> component.

React will try to recreate this component tree from scratch using the error boundary you provided, CatchBoundaryImpl.

import_node_async_hooks.AsyncLocalStorage is not a constructor
    at @tanstack_start-static-server-functions.js?t=1759421434724&v=cb209fed:1096:20

The above error occurred in the <Lazy> component.

React will try to recreate this component tree from scratch using the error boundary you provided, CatchBoundaryImpl.

gradual-turquoise•17h ago

before we go any deeper, what is it that you want to do with that middleware? i am asking because the use case is rather niche

deep-jadeOP•15h ago

right, i just want to see how it works. I want to verify two things - how it looks after build, so i want to inspect what was produced in bundles - how it looks in the app and how it works (it will be obvious exercise, i just want eample of simple () => "Hello world" as a static server function) And said "use case is niche", what is the use case then?

gradual-turquoise•15h ago

it allows you to produce sites that are fully static (no backend JS) but still load server side content from the client

deep-jadeOP•14h ago

hm ok, thanks do you have maybe working example? or can guide what steps to take to produce correct example? thanks for your time and help so far

gradual-turquoise•14h ago

not right now, we will need to set one up can you please create a github issue with a reproducer that exhibits the above problems so we can properly track this

deep-jadeOP•14h ago

of course, here it is https://github.com/TanStack/router/issues/5342

GitHub

Code snippet regarding staticFunctionMiddleware from docs is not wo...

Which project does this relate to? Start Describe the bug I just followed example from Static Server Functions and the example there import { createServerFn } from '@tanstack/react-start' i...

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Where is staticFunctionMiddleware

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