next/dist/esm/build/webpack/loaders/next-flight-loader/action-validate.js

The React Framework

// This function ensures that all the exported values are valid server actions,
// during the runtime. By definition all actions are required to be async
// functions, but here we can only check that they are functions.
export function ensureServerEntryExports(actions) {
    for(let i = 0; i < actions.length; i++){
        const action = actions[i];
        if (typeof action !== 'function') {
            throw new Error(`A "use server" file can only export async functions, found ${typeof action}.\nRead more: https://nextjs.org/docs/messages/invalid-use-server-value`);
        }
    }
}

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