increase supported Astro version to 4

CHANGELOG.md

@@ -1,2 +1,3 @@
 - Fixes bug where `firebase deploy --only firestore:rules,firestore:indexes` does not update rules and indexes. (#6966)
 - Add Firebase console link after creating or restoring a Firestore database (#6949)
+- Increase supported Astro version to 4 (#6960)

src/frameworks/astro/index.ts

@@ -9,13 +9,13 @@
 export const name = "Astro";
 export const support = SupportLevel.Experimental;
 export const type = FrameworkType.MetaFramework;
-export const supportedRange = "2 - 3";
+export const supportedRange = "2 - 4";
 
 export async function discover(dir: string): Promise<Discovery | undefined> {
   if (!existsSync(join(dir, "package.json"))) return;
   const version = getAstroVersion(dir);
   if (!version) return;
   const { output } = await getConfig(dir);
   return {
     mayWantBackend: output !== "static",
     version,
@@ -24,12 +24,12 @@
 
 const DEFAULT_BUILD_SCRIPT = ["astro build"];
 
 export async function build(cwd: string): Promise<BuildResult> {
   const cli = getNodeModuleBin("astro", cwd);
   await warnIfCustomBuildScript(cwd, name, DEFAULT_BUILD_SCRIPT);
   const { output, adapter } = await getConfig(cwd);
   const wantsBackend = output !== "static";
   if (wantsBackend && adapter?.name !== "@astrojs/node") {
     throw new FirebaseError(
       "Deploying an Astro application with SSR on Firebase Hosting requires the @astrojs/node adapter in middleware mode. https://docs.astro.build/en/guides/integrations-guide/node/",
     );
@@ -39,14 +39,14 @@
   return { wantsBackend };
 }
 
 export async function ɵcodegenPublicDirectory(root: string, dest: string) {
   const { outDir, output } = await getConfig(root);
   // output: "server" in astro.config builds "client" and "server" folders, otherwise assets are in top-level outDir
   const assetPath = join(root, outDir, output !== "static" ? "client" : "");
   await copy(assetPath, dest);
 }
 
 export async function ɵcodegenFunctionsDirectory(sourceDir: string, destDir: string) {
   const { outDir } = await getConfig(sourceDir);
   const packageJson = await readJSON(join(sourceDir, "package.json"));
   await copy(join(sourceDir, outDir, "server"), join(destDir));