Update to angular 15

package.json

@@ -17,23 +17,23 @@
   },
   "private": true,
   "dependencies": {
-    "@angular/animations": "^14.3.0",
-    "@angular/common": "^14.3.0",
-    "@angular/compiler": "^14.3.0",
-    "@angular/core": "^14.3.0",
-    "@angular/forms": "^14.3.0",
-    "@angular/platform-browser": "^14.3.0",
-    "@angular/platform-browser-dynamic": "^14.3.0",
-    "@angular/router": "^14.3.0",
+    "@angular/animations": "^15.2.10",
+    "@angular/common": "^15.2.10",
+    "@angular/compiler": "^15.2.10",
+    "@angular/core": "^15.2.10",
+    "@angular/forms": "^15.2.10",
+    "@angular/platform-browser": "^15.2.10",
+    "@angular/platform-browser-dynamic": "^15.2.10",
+    "@angular/router": "^15.2.10",
     "rxjs": "~6.5.4",
     "tslib": "^2.3.0",
     "zone.js": "~0.11.4"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "^14.2.13",
-    "@angular/cli": "^14.2.13",
-    "@angular/compiler-cli": "^14.3.0",
-    "@angular/language-service": "^14.3.0",
+    "@angular-devkit/build-angular": "^15.2.10",
+    "@angular/cli": "^15.2.10",
+    "@angular/compiler-cli": "^15.2.10",
+    "@angular/language-service": "^15.2.10",
     "@types/jasmine": "~3.5.0",
     "@types/jasminewd2": "~2.0.3",
     "@types/node": "^12.11.1",
@@ -45,7 +45,7 @@
     "karma-coverage-istanbul-reporter": "~2.1.0",
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "^2.0.0",
-    "ng-packagr": "^14.2.2",
+    "ng-packagr": "^15.2.2",
     "prettier": "^1.19.1",
     "protractor": "^7.0.0",
     "ts-node": "~8.3.0",

src/test.ts

@@ -7,14 +7,8 @@ import {
   platformBrowserDynamicTesting
 } from '@angular/platform-browser-dynamic/testing';
 
-declare const require: any;
-
 // First, initialize the Angular testing environment.
 getTestBed().initTestEnvironment(
   BrowserDynamicTestingModule,
   platformBrowserDynamicTesting()
 );
-// Then we find all the tests.
-const context = require.context('./', true, /\.spec\.ts$/);
-// And load the modules.
-context.keys().map(context);

tsconfig.json

@@ -10,14 +10,15 @@
     "module": "esnext",
     "moduleResolution": "node",
     "importHelpers": true,
-    "target": "es2020",
+    "target": "ES2022",
     "typeRoots": [
       "node_modules/@types"
     ],
     "lib": [
       "es2018",
       "dom"
-    ]
+    ],
+    "useDefineForClassFields": false
   },
   "files": [
     "./src/polyfills.ts",