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How can I protect my server actions? How to return status code?

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Common House-Martin posted this in #help-forum
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Common House-MartinOP
I need like a middleware that executes the getSession() server action and then if it doesn't return null it executes the next server action but I can't figure out why, I've tried multiple things with adding/removin async, passing the function reference instead of executing it but I always get the same error: "Error: A "use server" file can only export async functions, found object."


"use server";

import protect from "@/lib/protect";


export const display = async () => {
    return "ok"
};


export default protect(display)


//@/utils/protect.ts
"use server"
import { getSession } from '@/actions/login';

export default async function protect(fn) {
        if(await getSession()) {
            return await fn();
        } else {
            throw new Error("invalid session")
        }
        
}


Also Is there a way to manage the return status code like for example if I have a server action and I want to make it always return 404 how can I do that soo I can manage the response from the client through .catch()?

21 Replies

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joulev & fuma pray for Schneider
do you export anything other than async functions in your use server files?
from the error message, it seems you export an object from the file which is not allowed
"use server" file must only export asynchronous functions
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Common House-MartinOP
Image
that's the protect file
if I put "use server" it says Error: A "use server" file can only export async functions, found object.
if I remove it it works but why
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this is the actual server action
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joulev & fuma pray for Schneider
so can you confirm to me that, in all "use server" files in your project, there are only function exports? not something like export const something = someObject?
the code in the screenshot looks fine to me... but can try export default async function protect instead of export default function protect
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Common House-MartinOP
yes, all my use server files exprt an async function
Image
I tried adding async to it but I get errors if I do that
Image
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Ray
export async function protect() {}
try without default export
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Common House-MartinOP
nope, that shouldn't matter because it's just a different way of exporting right
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joulev & fuma pray for Schneider
hmm i think you'll need to give me a minimal reproduction repository
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Common House-MartinOP
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joulev & fuma pray for Schneider
Thanks, will have a look later
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joulev & fuma pray for Schneider
cause: protect is not an async function, but a normal function that returns an async function. such a function is still forbidden because, well, only async functions are allowed

how to fix: just remove use server from the src/lib/protect.ts file. protect is not a server action by itself, just a HOF wrapping server actions, so the use server in src/actions files are already enough