Cloudflare adapter with prerender = true breaks all routing

[ni554n]

What version of astro are you using?

1.9.1

Are you using an SSR adapter? If so, which one?

Cloudflare

What package manager are you using?

npm

What operating system are you using?

Linux

Describe the Bug

After enabling the experimental prerender flag and adding export const prerender = true; in the index.astro file; running astro build and astro dev works as expected.
But all route paths completely fails with 404 with Wrangler Dev as well as on the CF Pages after a successful deployment.

I think there's an issue with the generated _worker.js function. Routing starts working again if I delete that file or, set prerender = false.

Upgrading to [email protected] with @astrojs/[email protected] didn't fix the issue also.

Link to Minimal Reproducible Example

https://stackblitz.com/edit/node-3m5z2c

Participation

• I am willing to submit a pull request for this issue.

[matthewp]

I think this is fixed by #5822, going to test it once that is released.

[gacek1123]

Running into the same issue with "astro": "2.0.0-beta.3" and "@astrojs/cloudflare": "6.0.0-beta.1".

[matthewp]

Thanks for the reminder, this might be similar to #5860, i'll take a look.

[matthewp]

My WIP branch is here: https://github.com/withastro/astro/tree/cloudflare-prerender

just debugging so far, no fix found.

[ni554n]

The fix is working great. Thank you. But I've bumped into another issue.

In one of my API routes, I have a library for generating JWT on CF that uses Web Crypto API; which is not available on Node 18.
As soon as I turn on the prerender flag on index.astro, astro build fails throwing prerendering static routes. error SubtleCrypto not supported! even though I have not enabled prerendering on that API route. Is this an intended behavior or a bug?

Please take a look at this example: https://stackblitz.com/edit/node-6ayeta