Romaji to Kana Converter: Astro — Chapter 1, Exercise 3 ===================================================================== TASK Without installing any adapter, add export const prerender = false; to the top of a scratch page in your own project and run a real production build with npm run build. Observe what actually happens, and explain -- tying it back to this chapter's own finding -- exactly why on-demand rendering can't work without one. SOLUTION Create a real scratch page, e.g. src/pages/scratch.astro: --- export const prerender = false; ---

This page wants to render on demand.

Then run: npm run build The build fails before it ever produces a working site. Rather than quietly ignoring the flag or falling back to prerendering the page anyway, Astro's own build process stops and reports that on-demand rendering was requested but no adapter is configured to actually run it -- because prerender = false isn't a hint or a suggestion, it's an instruction to generate a page that has to be executed by a real server at request time, and without an adapter there is no server runtime for Astro to hand that job to. This is the exact same requirement this chapter's own finding-box already named for Premier League Predictor: Astro, just seen from the opposite direction: that course installs the @astrojs/node adapter in its own first chapter specifically because it needs on-demand routes from day one, while this course deliberately leaves the adapter out because nothing in it needs on-demand rendering yet. The moment any page in this project actually asks for prerender = false, an adapter stops being optional and becomes a real, load-bearing requirement -- which is exactly the situation Chapter 5 deliberately walks into on purpose, once it's time to build and compare a real server-rendered version of the converter. WHY THIS WORKS AS AN ANSWER ---------------------------- It doesn't just report that the build fails -- it explains the real mechanism behind the failure (prerender = false commits a page to running on a server at request time, and an adapter is what supplies that server runtime) and connects it back to the chapter's own comparison between this course's adapter-free setup and its Premier League Predictor: Astro sibling's adapter-from-day-one setup.