diff --git a/test/apps/basics/src/routes/[slug].html b/test/apps/basics/src/routes/[slug].svelte
similarity index 100%
rename from test/apps/basics/src/routes/[slug].html
rename to test/apps/basics/src/routes/[slug].svelte
diff --git a/test/apps/basics/src/routes/_error.html b/test/apps/basics/src/routes/_error.svelte
similarity index 100%
rename from test/apps/basics/src/routes/_error.html
rename to test/apps/basics/src/routes/_error.svelte
diff --git a/test/apps/basics/src/routes/a.html b/test/apps/basics/src/routes/a.svelte
similarity index 100%
rename from test/apps/basics/src/routes/a.html
rename to test/apps/basics/src/routes/a.svelte
diff --git a/test/apps/basics/src/routes/ambiguous/[slug].html b/test/apps/basics/src/routes/ambiguous/[slug].svelte
similarity index 100%
rename from test/apps/basics/src/routes/ambiguous/[slug].html
rename to test/apps/basics/src/routes/ambiguous/[slug].svelte
diff --git a/test/apps/basics/src/routes/b/index.html b/test/apps/basics/src/routes/b/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/b/index.html
rename to test/apps/basics/src/routes/b/index.svelte
diff --git a/test/apps/basics/src/routes/const.html b/test/apps/basics/src/routes/const.svelte
similarity index 100%
rename from test/apps/basics/src/routes/const.html
rename to test/apps/basics/src/routes/const.svelte
diff --git a/test/apps/basics/src/routes/delete-test/index.html b/test/apps/basics/src/routes/delete-test/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/delete-test/index.html
rename to test/apps/basics/src/routes/delete-test/index.svelte
diff --git a/test/apps/basics/src/routes/dirs/bar/index.html b/test/apps/basics/src/routes/dirs/bar/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/dirs/bar/index.html
rename to test/apps/basics/src/routes/dirs/bar/index.svelte
diff --git a/test/apps/basics/src/routes/dirs/foo/index.html b/test/apps/basics/src/routes/dirs/foo/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/dirs/foo/index.html
rename to test/apps/basics/src/routes/dirs/foo/index.svelte
diff --git a/test/apps/basics/src/routes/echo-query/index.html b/test/apps/basics/src/routes/echo-query/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/echo-query/index.html
rename to test/apps/basics/src/routes/echo-query/index.svelte
diff --git a/test/apps/basics/src/routes/index.html b/test/apps/basics/src/routes/index.svelte
similarity index 100%
rename from test/apps/basics/src/routes/index.html
rename to test/apps/basics/src/routes/index.svelte
diff --git a/test/apps/basics/src/routes/unsafe-replacement.html b/test/apps/basics/src/routes/unsafe-replacement.svelte
similarity index 100%
rename from test/apps/basics/src/routes/unsafe-replacement.html
rename to test/apps/basics/src/routes/unsafe-replacement.svelte
diff --git a/test/apps/css/src/routes/_components/Title.html b/test/apps/css/src/routes/_components/Title.svelte
similarity index 100%
rename from test/apps/css/src/routes/_components/Title.html
rename to test/apps/css/src/routes/_components/Title.svelte
diff --git a/test/apps/css/src/routes/_error.html b/test/apps/css/src/routes/_error.svelte
similarity index 100%
rename from test/apps/css/src/routes/_error.html
rename to test/apps/css/src/routes/_error.svelte
diff --git a/test/apps/css/src/routes/bar.html b/test/apps/css/src/routes/bar.svelte
similarity index 75%
rename from test/apps/css/src/routes/bar.html
rename to test/apps/css/src/routes/bar.svelte
index d63d069..98df528 100644
--- a/test/apps/css/src/routes/bar.html
+++ b/test/apps/css/src/routes/bar.svelte
@@ -4,7 +4,7 @@
 	export let Title;
 
 	onMount(() => {
-		import('./_components/Title.html').then(mod => {
+		import('./_components/Title.svelte').then(mod => {
 			Title = mod.default;
 		});
 	});
diff --git a/test/apps/css/src/routes/foo.html b/test/apps/css/src/routes/foo.svelte
similarity index 100%
rename from test/apps/css/src/routes/foo.html
rename to test/apps/css/src/routes/foo.svelte
diff --git a/test/apps/css/src/routes/index.html b/test/apps/css/src/routes/index.svelte
similarity index 100%
rename from test/apps/css/src/routes/index.html
rename to test/apps/css/src/routes/index.svelte
diff --git a/test/apps/errors/src/routes/_error.html b/test/apps/errors/src/routes/_error.svelte
similarity index 100%
rename from test/apps/errors/src/routes/_error.html
rename to test/apps/errors/src/routes/_error.svelte
diff --git a/test/apps/errors/src/routes/enhance-your-calm.html b/test/apps/errors/src/routes/enhance-your-calm.svelte
similarity index 100%
rename from test/apps/errors/src/routes/enhance-your-calm.html
rename to test/apps/errors/src/routes/enhance-your-calm.svelte
diff --git a/test/apps/errors/src/routes/index.html b/test/apps/errors/src/routes/index.svelte
similarity index 100%
rename from test/apps/errors/src/routes/index.html
rename to test/apps/errors/src/routes/index.svelte
diff --git a/test/apps/errors/src/routes/no-error.html b/test/apps/errors/src/routes/no-error.svelte
similarity index 100%
rename from test/apps/errors/src/routes/no-error.html
rename to test/apps/errors/src/routes/no-error.svelte
diff --git a/test/apps/errors/src/routes/throw.html b/test/apps/errors/src/routes/throw.svelte
similarity index 100%
rename from test/apps/errors/src/routes/throw.html
rename to test/apps/errors/src/routes/throw.svelte
diff --git a/test/apps/export/src/routes/_error.html b/test/apps/export/src/routes/_error.svelte
similarity index 100%
rename from test/apps/export/src/routes/_error.html
rename to test/apps/export/src/routes/_error.svelte
diff --git a/test/apps/export/src/routes/index.html b/test/apps/export/src/routes/index.svelte
similarity index 100%
rename from test/apps/export/src/routes/index.html
rename to test/apps/export/src/routes/index.svelte
diff --git a/test/apps/ignore/src/routes/[slug].html b/test/apps/ignore/src/routes/[slug].svelte
similarity index 100%
rename from test/apps/ignore/src/routes/[slug].html
rename to test/apps/ignore/src/routes/[slug].svelte
diff --git a/test/apps/ignore/src/routes/_error.html b/test/apps/ignore/src/routes/_error.svelte
similarity index 100%
rename from test/apps/ignore/src/routes/_error.html
rename to test/apps/ignore/src/routes/_error.svelte
diff --git a/test/apps/ignore/src/routes/a.html b/test/apps/ignore/src/routes/a.svelte
similarity index 100%
rename from test/apps/ignore/src/routes/a.html
rename to test/apps/ignore/src/routes/a.svelte
diff --git a/test/apps/ignore/src/routes/index.html b/test/apps/ignore/src/routes/index.svelte
similarity index 100%
rename from test/apps/ignore/src/routes/index.html
rename to test/apps/ignore/src/routes/index.svelte
diff --git a/test/apps/layout/src/routes/[slug].html b/test/apps/layout/src/routes/[slug].svelte
similarity index 100%
rename from test/apps/layout/src/routes/[slug].html
rename to test/apps/layout/src/routes/[slug].svelte
diff --git a/test/apps/layout/src/routes/_error.html b/test/apps/layout/src/routes/_error.svelte
similarity index 100%
rename from test/apps/layout/src/routes/_error.html
rename to test/apps/layout/src/routes/_error.svelte
diff --git a/test/apps/layout/src/routes/index.html b/test/apps/layout/src/routes/index.svelte
similarity index 100%
rename from test/apps/layout/src/routes/index.html
rename to test/apps/layout/src/routes/index.svelte
diff --git a/test/apps/preloading/src/routes/_error.html b/test/apps/preloading/src/routes/_error.svelte
similarity index 100%
rename from test/apps/preloading/src/routes/_error.html
rename to test/apps/preloading/src/routes/_error.svelte
diff --git a/test/apps/preloading/src/routes/_layout.html b/test/apps/preloading/src/routes/_layout.svelte
similarity index 100%
rename from test/apps/preloading/src/routes/_layout.html
rename to test/apps/preloading/src/routes/_layout.svelte
diff --git a/test/apps/preloading/src/routes/foo.html b/test/apps/preloading/src/routes/foo.svelte
similarity index 100%
rename from test/apps/preloading/src/routes/foo.html
rename to test/apps/preloading/src/routes/foo.svelte
diff --git a/test/apps/preloading/src/routes/index.html b/test/apps/preloading/src/routes/index.svelte
similarity index 100%
rename from test/apps/preloading/src/routes/index.html
rename to test/apps/preloading/src/routes/index.svelte
diff --git a/test/apps/preloading/src/routes/slow-preload.html b/test/apps/preloading/src/routes/slow-preload.svelte
similarity index 100%
rename from test/apps/preloading/src/routes/slow-preload.html
rename to test/apps/preloading/src/routes/slow-preload.svelte
diff --git a/test/apps/redirects/src/routes/_error.html b/test/apps/redirects/src/routes/_error.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/_error.html
rename to test/apps/redirects/src/routes/_error.svelte
diff --git a/test/apps/redirects/src/routes/index.html b/test/apps/redirects/src/routes/index.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/index.html
rename to test/apps/redirects/src/routes/index.svelte
diff --git a/test/apps/redirects/src/routes/redirect-from.html b/test/apps/redirects/src/routes/redirect-from.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/redirect-from.html
rename to test/apps/redirects/src/routes/redirect-from.svelte
diff --git a/test/apps/redirects/src/routes/redirect-to-external.html b/test/apps/redirects/src/routes/redirect-to-external.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/redirect-to-external.html
rename to test/apps/redirects/src/routes/redirect-to-external.svelte
diff --git a/test/apps/redirects/src/routes/redirect-to-root.html b/test/apps/redirects/src/routes/redirect-to-root.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/redirect-to-root.html
rename to test/apps/redirects/src/routes/redirect-to-root.svelte
diff --git a/test/apps/redirects/src/routes/redirect-to.html b/test/apps/redirects/src/routes/redirect-to.svelte
similarity index 100%
rename from test/apps/redirects/src/routes/redirect-to.html
rename to test/apps/redirects/src/routes/redirect-to.svelte
diff --git a/test/apps/scroll/src/routes/_error.html b/test/apps/scroll/src/routes/_error.svelte
similarity index 100%
rename from test/apps/scroll/src/routes/_error.html
rename to test/apps/scroll/src/routes/_error.svelte
diff --git a/test/apps/scroll/src/routes/another-tall-page.html b/test/apps/scroll/src/routes/another-tall-page.svelte
similarity index 100%
rename from test/apps/scroll/src/routes/another-tall-page.html
rename to test/apps/scroll/src/routes/another-tall-page.svelte
diff --git a/test/apps/scroll/src/routes/index.html b/test/apps/scroll/src/routes/index.svelte
similarity index 100%
rename from test/apps/scroll/src/routes/index.html
rename to test/apps/scroll/src/routes/index.svelte
diff --git a/test/apps/scroll/src/routes/tall-page.html b/test/apps/scroll/src/routes/tall-page.svelte
similarity index 100%
rename from test/apps/scroll/src/routes/tall-page.html
rename to test/apps/scroll/src/routes/tall-page.svelte
diff --git a/test/apps/session/src/routes/_error.html b/test/apps/session/src/routes/_error.svelte
similarity index 100%
rename from test/apps/session/src/routes/_error.html
rename to test/apps/session/src/routes/_error.svelte
diff --git a/test/apps/session/src/routes/index.html b/test/apps/session/src/routes/index.svelte
similarity index 100%
rename from test/apps/session/src/routes/index.html
rename to test/apps/session/src/routes/index.svelte
diff --git a/test/apps/session/src/routes/preloaded.html b/test/apps/session/src/routes/preloaded.svelte
similarity index 100%
rename from test/apps/session/src/routes/preloaded.html
rename to test/apps/session/src/routes/preloaded.svelte
diff --git a/test/apps/session/src/routes/session.html b/test/apps/session/src/routes/session.svelte
similarity index 100%
rename from test/apps/session/src/routes/session.html
rename to test/apps/session/src/routes/session.svelte
diff --git a/test/apps/with-basepath/src/routes/_error.html b/test/apps/with-basepath/src/routes/_error.svelte
similarity index 100%
rename from test/apps/with-basepath/src/routes/_error.html
rename to test/apps/with-basepath/src/routes/_error.svelte
diff --git a/test/apps/with-basepath/src/routes/index.html b/test/apps/with-basepath/src/routes/index.svelte
similarity index 100%
rename from test/apps/with-basepath/src/routes/index.html
rename to test/apps/with-basepath/src/routes/index.svelte
diff --git a/test/apps/with-sourcemaps-webpack/src/routes/_error.html b/test/apps/with-sourcemaps-webpack/src/routes/_error.svelte
similarity index 100%
rename from test/apps/with-sourcemaps-webpack/src/routes/_error.html
rename to test/apps/with-sourcemaps-webpack/src/routes/_error.svelte
diff --git a/test/apps/with-sourcemaps-webpack/src/routes/index.html b/test/apps/with-sourcemaps-webpack/src/routes/index.svelte
similarity index 100%
rename from test/apps/with-sourcemaps-webpack/src/routes/index.html
rename to test/apps/with-sourcemaps-webpack/src/routes/index.svelte
diff --git a/test/apps/with-sourcemaps/src/routes/_error.html b/test/apps/with-sourcemaps/src/routes/_error.svelte
similarity index 100%
rename from test/apps/with-sourcemaps/src/routes/_error.html
rename to test/apps/with-sourcemaps/src/routes/_error.svelte
diff --git a/test/apps/with-sourcemaps/src/routes/index.html b/test/apps/with-sourcemaps/src/routes/index.svelte
similarity index 100%
rename from test/apps/with-sourcemaps/src/routes/index.html
rename to test/apps/with-sourcemaps/src/routes/index.svelte