fix(@angular/build): set es2016 target for Rolldown prebundling in Zone.js apps

Rolldown dependency prebundling in Vite dev server did not receive target options, leaving native async/await in prebundled dependencies. When an application uses Zone.js, native async/await causes Zone.js context loss across await ticks.

Fixes #33770

Author: alan-agius4

packages/angular/build/src/builders/dev-server/vite/server.ts

@@ -104,13 +104,15 @@ function createSsrConfig(
   prebundleLoaderExtensions: RolldownLoaderOption | undefined,
   thirdPartySourcemaps: boolean,
   define: ApplicationBuilderInternalOptions['define'],
+  target: string[],
 ): Vite.SSROptions {
   return {
     // Note: `true` and `/.*/` have different sematics. When true, the `external` option is ignored.
     noExternal: /.*/,
     // Exclude any Node.js built in module and provided dependencies (currently build defined externals)
     external: externalMetadata.explicitServer,
     optimizeDeps: getDepOptimizationConfig({
+      target,
       // Only enable with caching since it causes prebundle dependencies to be cached
       disabled: serverOptions.prebundle === false,
       // Exclude any explicitly defined dependencies (currently build defined externals and node.js built-ins)
@@ -214,6 +216,7 @@ export async function setupServer(
             prebundleLoaderExtensions,
             thirdPartySourcemaps,
             define,
+            target,
           ),
     plugins: [
       createAngularSetupMiddlewaresPlugin({
@@ -239,6 +242,7 @@ export async function setupServer(
     ],
     // Browser only optimizeDeps. (This does not run for SSR dependencies).
     optimizeDeps: getDepOptimizationConfig({
+      target,
       // Only enable with caching since it causes prebundle dependencies to be cached
       disabled: serverOptions.prebundle === false,
       // Exclude any explicitly defined dependencies (currently build defined externals)

packages/angular/build/src/tools/vite/utils.ts

@@ -48,6 +48,7 @@ export type RolldownLoaderOption = Exclude<
 >['moduleTypes'];
 
 export function getDepOptimizationConfig({
+  target,
   disabled,
   exclude,
   include,
@@ -56,6 +57,7 @@ export function getDepOptimizationConfig({
   thirdPartySourcemaps,
   define = {},
 }: {
+  target: string[];
   disabled: boolean;
   exclude: string[];
   include: string[];
@@ -73,6 +75,7 @@ export function getDepOptimizationConfig({
     noDiscovery: disabled,
     rolldownOptions: {
       transform: {
+        target,
         define,
       },
       moduleTypes: loader,