feat: Update Angular template to version 19 (#6960)

* feat: Update Angular template to version 19

This prerelease version 19 includes several developer experience (DX) improvements:
- Introduces a new server routing API
- Portable with no Node.js dependencies
- Supports a "neutral" output format

* fix formatting

---------

Co-authored-by: Peter Bacon Darwin <pbacondarwin@cloudflare.com>

.changeset/cool-experts-punch.md

@@ -0,0 +1,5 @@
+---
+"create-cloudflare": minor
+---
+
+Update Angular template to version 19

packages/create-cloudflare/src/frameworks/package.json

@@ -7,7 +7,7 @@
 	"dependencies": {
 		"create-astro": "4.10.0",
 		"create-analog": "1.8.1",
-		"@angular/create": "18.2.11",
+		"@angular/create": "19.0.0",
 		"create-docusaurus": "3.6.1",
 		"create-hono": "0.14.2",
 		"create-next-app": "14.2.5",

packages/create-cloudflare/templates/angular/c3.ts

@@ -13,7 +13,11 @@ import type { C3Context } from "types";
 const { npm } = detectPackageManager();
 
 const generate = async (ctx: C3Context) => {
-	await runFrameworkGenerator(ctx, [ctx.project.name, "--ssr"]);
+	await runFrameworkGenerator(ctx, [
+		ctx.project.name,
+		"--ssr",
+		"--server-routing" /** Dev Preview API */,
+	]);
 	logRaw("");
 };
 
@@ -50,12 +54,21 @@ async function updateAppCode() {
 	writeFile(resolve(appConfigPath), newAppConfig);
 	s.stop(`${brandColor(`updated`)} ${dim(appConfigPath)}`);
 
+	// Update an app server routes file to:
+	const appServerRoutesPath = "src/app/app.routes.server.ts";
+	const appRoutes = readFile(resolve(appServerRoutesPath));
+	const newAppRoutes = appRoutes.replace(
+		"RenderMode.Prerender",
+		"RenderMode.Server",
+	);
+	writeFile(resolve(appServerRoutesPath), newAppRoutes);
+	s.stop(`${brandColor(`updated`)} ${dim(appServerRoutesPath)}`);
+
 	// Remove unwanted dependencies
 	s.start(`Updating package.json`);
 	const packageJsonPath = resolve("package.json");
 	const packageManifest = readJSON(packageJsonPath);
 
-	delete packageManifest["dependencies"]["@angular/ssr"];
 	delete packageManifest["dependencies"]["express"];
 	delete packageManifest["devDependencies"]["@types/express"];
 
@@ -70,6 +83,8 @@ function updateAngularJson(ctx: C3Context) {
 	// Update builder
 	const architectSection = angularJson.projects[ctx.project.name].architect;
 	architectSection.build.options.outputPath = "dist";
+	architectSection.build.options.outputMode = "server";
+	architectSection.build.options.ssr.experimentalPlatform = "neutral";
 	architectSection.build.options.assets.push("src/_routes.json");
 
 	writeFile(resolve("angular.json"), JSON.stringify(angularJson, null, 2));
@@ -93,8 +108,7 @@ const config: TemplateConfig = {
 		scripts: {
 			start: `${npm} run build && wrangler pages dev dist/cloudflare ${await compatDateFlag()} --experimental-local`,
 			build: `ng build && ${npm} run process`,
-			process:
-				"node ./tools/copy-files.mjs && node ./tools/alter-polyfills.mjs",
+			process: "node ./tools/copy-files.mjs",
 			deploy: `${npm} run build && wrangler pages deploy dist/cloudflare`,
 		},
 	}),

packages/create-cloudflare/templates/angular/templates/src/server.ts

@@ -0,0 +1,15 @@
+import { AngularAppEngine, createRequestHandler } from '@angular/ssr';
+
+const angularApp = new AngularAppEngine();
+
+/**
+ * This is a request handler used by the Angular CLI (dev-server and during build).
+ */
+export const reqHandler = createRequestHandler(async (req) => {
+	const res = await angularApp.render(req);
+
+	return res ?? new Response('Page not found.', { status: 404 });
+});
+
+
+export default { fetch: reqHandler };

packages/create-cloudflare/templates/angular/templates/tools/copy-files.mjs

@@ -1,7 +1,13 @@
 // Copy the files over so that they can be uploaded by the pages publish command.
 import fs from "node:fs";
-import { join } from "node:path";
-import { client, cloudflare, ssr, worker } from "./paths.mjs";
+import { join, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const root = resolve(fileURLToPath(import.meta.url), "../../");
+const client = resolve(root, "dist/browser");
+const ssr = resolve(root, "dist/server");
+const cloudflare = resolve(root, "dist/cloudflare");
+const worker = resolve(cloudflare, "_worker.js");
 
 fs.cpSync(client, cloudflare, { recursive: true });
 fs.cpSync(ssr, worker, { recursive: true });