refactor(@angular/ssr): export tokens from the /tokens entry point

This commit relocates the DI tokens to a dedicated entry point. This change ensures that we do not depend on tree-shaking to eliminate server code from client bundles.

Closes #28670

Author: alan-agius4

goldens/public-api/angular/ssr/index.api.md

@@ -5,7 +5,6 @@
 ```ts
 
 import { EnvironmentProviders } from '@angular/core';
-import { InjectionToken } from '@angular/core';
 
 // @public
 export class AngularAppEngine {
@@ -35,15 +34,6 @@ export enum RenderMode {
     Server = 1
 }
 
-// @public
-export const REQUEST: InjectionToken<Request>;
-
-// @public
-export const REQUEST_CONTEXT: InjectionToken<unknown>;
-
-// @public
-export const RESPONSE_INIT: InjectionToken<ResponseInit>;
-
 // @public
 export type ServerRoute = ServerRouteAppShell | ServerRouteClient | ServerRoutePrerender | ServerRoutePrerenderWithParams | ServerRouteServer;
 

goldens/public-api/angular/ssr/tokens/index.api.md

@@ -0,0 +1,20 @@
+## API Report File for "@angular/ssr_tokens"
+
+> Do not edit this file. It is a report generated by [API Extractor](https://api-extractor.com/).
+
+```ts
+
+import { InjectionToken } from '@angular/core';
+
+// @public
+export const REQUEST: InjectionToken<Request>;
+
+// @public
+export const REQUEST_CONTEXT: InjectionToken<unknown>;
+
+// @public
+export const RESPONSE_INIT: InjectionToken<ResponseInit>;
+
+// (No @packageDocumentation comment for this package)
+
+```

packages/angular/ssr/BUILD.bazel

@@ -20,6 +20,7 @@ ts_library(
     tsconfig = "//:tsconfig-build-ng",
     deps = [
         "//packages/angular/ssr/third_party/critters:bundled_critters_lib",
+        "//packages/angular/ssr/tokens",
         "@npm//@angular/common",
         "@npm//@angular/core",
         "@npm//@angular/platform-server",
@@ -38,6 +39,7 @@ ng_package(
     externals = [
         "@angular/ssr",
         "@angular/ssr/node",
+        "@angular/ssr/tokens",
         "../../third_party/critters",
     ],
     nested_packages = [
@@ -47,6 +49,7 @@ ng_package(
     deps = [
         ":ssr",
         "//packages/angular/ssr/node",
+        "//packages/angular/ssr/tokens",
     ],
 )
 

packages/angular/ssr/public_api.ts

@@ -17,5 +17,3 @@ export {
   provideServerRoutesConfig,
   RenderMode,
 } from './src/routes/route-config';
-
-export { REQUEST, RESPONSE_INIT, REQUEST_CONTEXT } from './src/tokens';

packages/angular/ssr/src/app.ts

@@ -7,12 +7,12 @@
  */
 
 import { LOCALE_ID, StaticProvider, ɵresetCompiledComponents } from '@angular/core';
+import { REQUEST, REQUEST_CONTEXT, RESPONSE_INIT } from '@angular/ssr/tokens';
 import { ServerAssets } from './assets';
 import { Hooks } from './hooks';
 import { getAngularAppManifest } from './manifest';
 import { RenderMode } from './routes/route-config';
 import { ServerRouter } from './routes/router';
-import { REQUEST, REQUEST_CONTEXT, RESPONSE_INIT } from './tokens';
 import { sha256 } from './utils/crypto';
 import { InlineCriticalCssProcessor } from './utils/inline-critical-css';
 import { LRUCache } from './utils/lru-cache';

packages/angular/ssr/tokens/BUILD.bazel

@@ -0,0 +1,19 @@
+load("//tools:defaults.bzl", "ts_library")
+
+package(default_visibility = ["//visibility:public"])
+
+ts_library(
+    name = "tokens",
+    srcs = glob(
+        [
+            "*.ts",
+            "src/**/*.ts",
+        ],
+    ),
+    module_name = "@angular/ssr/tokens",
+    tsconfig = "//:tsconfig-build-ng",
+    deps = [
+        "@npm//@angular/core",
+        "@npm//tslib",
+    ],
+)

packages/angular/ssr/tokens/index.ts

@@ -0,0 +1,9 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+export * from './public_api';

packages/angular/ssr/tokens/public_api.ts

@@ -0,0 +1,9 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+export { REQUEST, RESPONSE_INIT, REQUEST_CONTEXT } from './src/tokens';