add nuxt init method for firebase hosting

CHANGELOG.md

@@ -5,3 +5,4 @@
 - Use Web Framework's well known version range in `firebase init hosting`. (#6562)
 - Permit use of more SSR regions in Web Frameworks deploys. (#6086)
 - Limit Web Framework's generated Cloud Function name to 23 characters, fixing deploys for some. (#6260)
+- Allow Nuxt as an option during `firebase init hosting`. (#6309)

src/frameworks/nuxt/index.ts

@@ -15,6 +15,7 @@
 import { nuxtConfigFilesExist } from "./utils";
 import type { NuxtOptions } from "./interfaces";
 import { FirebaseError } from "../../error";
+import { execSync } from "child_process";
 
 const DEFAULT_BUILD_SCRIPT = ["nuxt build", "nuxi build"];
 
@@ -23,7 +24,7 @@
  * @param dir current directory
  * @return undefined if project is not Nuxt 2, { mayWantBackend: true, publicDirectory: string } otherwise
  */
 export async function discover(dir: string) {
   if (!(await pathExists(join(dir, "package.json")))) return;
 
   const anyConfigFileExists = await nuxtConfigFilesExist(dir);
@@ -40,7 +41,7 @@
   return { publicDirectory, mayWantBackend, version };
 }
 
 export async function build(cwd: string) {
   await warnIfCustomBuildScript(cwd, name, DEFAULT_BUILD_SCRIPT);
   const cli = getNodeModuleBin("nuxt", cwd);
   const {
@@ -65,7 +66,7 @@
   return { wantsBackend, rewrites, baseUrl };
 }
 
 export async function ɵcodegenPublicDirectory(root: string, dest: string) {
   const {
     app: { baseURL },
   } = await getConfig(root);
@@ -75,13 +76,13 @@
   await copy(distPath, fullDest);
 }
 
 export async function ɵcodegenFunctionsDirectory(sourceDir: string) {
   const serverDir = join(sourceDir, ".output", "server");
   const packageJsonBuffer = await readFile(join(sourceDir, "package.json"));
   const packageJson = JSON.parse(packageJsonBuffer.toString());
 
   packageJson.dependencies ||= {};
   packageJson.dependencies["nitro-output"] = `file:${serverDir}`;
 
   return { packageJson, frameworksEntry: "nitro" };
 }
@@ -112,3 +113,14 @@
   const { loadNuxtConfig } = await relativeRequire(dir, "@nuxt/kit");
   return await loadNuxtConfig(dir);
 }
+
+/**
+ * Utility method used during project initialization.
+ */
+export function init(setup: any, config: any) {
+  execSync(`npx --yes nuxi@"${supportedRange}" init ${setup.hosting.source}`, {
+    stdio: "inherit",
+    cwd: config.projectDir,
+  });
+  return Promise.resolve();
+}