Vercel adapter: parameter "functionPerRoute" generate serverless function even for prerendered routes about astro HOT 5 CLOSED

Good first issue!

This is an opportunity for astro users to learn about how astro works by fixing a small but real bug. You can expect to get help setting up the dev environment, and understanding the project structure in #dev channel of our discord server (https://astro.build/chat).

What's the bug?

The functionPerRoute config creates more functions than necessary.

What's going wrong here?

Adapters depend on Astro's Integration API to provide them with the routes to make functions out of. The routes are provided in a map called entrypoints.

Neither Astro nor the vercel adapter make a distinction between prerendered and on-demand rendered routes - all are turned into functions. Only non-prerendered routes should be exposed to the adapter.

Where do I start looking?

The part where Astro's internals pass the entrypoints map to the adapter is here:

The part where Astro's internals populate the entrypoints map in the first place is here:

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Your example doesn't have prerendered pages. Please update the example to match the problem you're describing.

@matthewp Hello, the ouput is "hybrid", unless I'm mistaken all pages are prerendered by default, so the index.astro is a prerendered one.

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@lilnasy Thanks for providing guidance on this issue! I would like to give it a try 🙂

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Your example doesn't have prerendered pages. Please update the example to match the problem you're describing.

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Hello @bentouch-digital. Please provide a minimal reproduction using a GitHub repository or StackBlitz. Issues marked with needs repro will be closed if they have no activity within 3 days.

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