astro/.changeset/ninety-snails-study.md

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'astro': patch
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Support custom 404s added via `injectRoute` or as `src/pages/404.html`
Show injected custom 404 route in dev (#6940) * Add unit test for injected 404 routes * Add fixture test for injected 404 routes * Use any route pattern to find custom 404 * Fix frozen lockfile error * Use `route` instead of `pattern` to match custom 404 Dynamic catch-all routes can match against `/404/` but will then error because they’re not actually designed to handle a param of `'404'`. Testing `route` instead excludes dynamic routes (because they’ll contain dynamic segments inside square brackets). Not sure if someone might _want_ to render the 404 via a dynamic route, but we already don’t support that, so this doesn’t change anything. * Fix injected 404 fixture * Add tests for `src/pages/404.html` * Add changeset * Fix lockfile * And again 2023-05-01 09:37:07 -05:00			`---`
			`'astro': patch`
			`---`

			Support custom 404s added via `injectRoute` or as `src/pages/404.html`