spike: node runner resolve hook (do not merge)

package.json

@@ -17,8 +17,8 @@
     "test:firefox-headless": "npx --yes firebase-tools@latest emulators:exec --project=demo-123 \"ng test --watch=false --browsers=FirefoxHeadless\"",
     "lint": "ng lint",
     "lint:fix": "ng lint --fix",
-    "test:node": "node -r tsconfig-paths/register ./dist/out-tsc/jasmine/tools/jasmine.mjs --input-type=commonjs",
-    "test:node-esm": "node -r tsconfig-paths/register ./dist/out-tsc/jasmine/tools/jasmine.mjs",
+    "test:node": "node --import ./tools/jasmine-register-angular-fire.mjs -r tsconfig-paths/register ./dist/out-tsc/jasmine/tools/jasmine.mjs --input-type=commonjs",
+    "test:node-esm": "node --import ./tools/jasmine-register-angular-fire.mjs -r tsconfig-paths/register ./dist/out-tsc/jasmine/tools/jasmine.mjs",
     "test:typings": "node ./tools/run-typings-test.js",
     "test:build": "bash ./test/ng-build/build.sh",
     "test:all": "npm run test:node-esm && npm run test:chrome-headless && npm run test:typings && npm run test:build",

src/app/runner-spike.jasmine.ts

@@ -0,0 +1,14 @@
+import { TestBed } from '@angular/core/testing';
+import { FirebaseApp, provideFirebaseApp } from '@angular/fire/app';
+import { getApp, initializeApp } from 'firebase/app';
+
+describe('Node runner spike', () => {
+  afterEach(() => TestBed.resetTestingModule());
+
+  it('loads the built library with one firebase/app registry', () => {
+    TestBed.configureTestingModule({
+      providers: [provideFirebaseApp(() => initializeApp({ apiKey: 'spike', projectId: 'spike', appId: '1:1:web:spike' }, 'spike'))],
+    });
+    expect(TestBed.inject(FirebaseApp)).toBe(getApp('spike'));
+  });
+});

tools/angular-fire-resolve-hook.mjs

@@ -0,0 +1,25 @@
+// Node resolve hook for the jasmine run: maps @angular/fire imports to the built library under
+// dist/packages-dist through its exports map, since nothing installs the package into node_modules.
+import { readFileSync } from 'node:fs';
+
+const packageName = '@angular/fire';
+
+let packageRoot;
+let exportsMap;
+
+export function initialize(data) {
+  packageRoot = data.packageRoot;
+  exportsMap = JSON.parse(readFileSync(new URL('package.json', packageRoot), 'utf8')).exports;
+}
+
+export function resolve(specifier, context, nextResolve) {
+  if (specifier !== packageName && !specifier.startsWith(`${packageName}/`)) {
+    return nextResolve(specifier, context);
+  }
+  const subpath = specifier === packageName ? '.' : `./${specifier.slice(packageName.length + 1)}`;
+  const entry = exportsMap[subpath]?.default;
+  if (typeof entry !== 'string') {
+    throw new Error(`The built ${packageName} has no "${subpath}" entry in its exports map, so "${specifier}" cannot be resolved for the Node specs.`);
+  }
+  return { url: new URL(entry, packageRoot).href, shortCircuit: true, format: 'module' };
+}

tools/jasmine-register-angular-fire.mjs

@@ -0,0 +1,8 @@
+// Preloaded by the test:node scripts with --import, before jasmine imports any spec.
+import { register } from 'node:module';
+import { resolve } from 'node:path';
+import { pathToFileURL } from 'node:url';
+
+register('./angular-fire-resolve-hook.mjs', import.meta.url, {
+  data: { packageRoot: pathToFileURL(resolve('dist/packages-dist') + '/').href },
+});