Configuration option for prerendering pages (overrides output mode)

[humanfriend22]

Body

Summary

A configuration option to specify which files to prerender when using the hybrid or server output mode. We could allow build.prerenderPages to take a:

boolean -> to globally prerender all pages while maintaining server API routes, etc
array -> an array of paths to hard code files to prerender
function -> custom logic to decide whether to prerender or not

This is probably the opposite of the hybrid mode.

Background & Motivation

I needed all my pages to be pre-rendered but had some backend apis I wanted to be maintained.

Goals

• An additional configuration option (preferably build.prerenderPages)

Example

This would be opt-in and would not break any existing code as developers can either add build.prerenderPages to their project or export const prerender = boolean.

PR?

This is my first real project with Astro and don't have a great understanding of the API so this might already exist but I found out where export const prerender = boolean is being read and it doesn't seem it is being influenced by the config.

[florian-lefebvre]

I think this is possible already: you have the global output which can be overriden on a page basis. Otherwise, you can use this integration hook: https://docs.astro.build/en/reference/integrations-reference/#astroroutesetup