Upgrading to Angular 20:

Replaced checked in package-lock.json by regenerated one.
Ran ng update @angular/core@20 @angular/cli@20
Ran npm install @angular-builders/jest@^20.0.0 @fortawesome/angular-fontawesome@^3.0.0 @swimlane/ngx-graph@^11
Ran npm install ngx-mat-select-search@^8.0.2.
Ran ng update @angular/material@20.
Updated all eslint and typescript to the latest versions.
Removed @angular-devkit/schematics.
Updated fontawesome.
Updated rxjs and tslib.
Moved required node version from 16 to 20.
Updated jest-preset-angular.
Set preserveWhitespaces to false.
Corrected two type declarations in two typescript files to make ng serve run without errors.
Removed unused angular-devkit/schematics from view-user.component.ts .
Updated list of supported browsers.
Upgraded prettier.
Ran prettier . --write the first time.
Ran prettier . --write the second time.
Ran ng generate @angular/core:inject with defaults, excepted a handful of files.
Fixed remaining eslint problems.
Added dist directory to ignores in eslint.config.js.
Let prettier fix formatting, almost everything is just line breaks.
Made htmlhint ignore @if and @for Angular constructs.
Updated node version in Github workflow to 22.12.0 (build.yml).
Updated .env.ts.
Updated Angular datetime format strings from YYYY-MM-DD to yyyy-MM-dd.
Merged changes from dev into angular20 branch.

tsconfig.json

@@ -3,8 +3,12 @@
   "compilerOptions": {
     "baseUrl": "./",
     "paths": {
-      "@pipes/*": ["src/app/pipes/*"],
-      "app/*": ["src/app/*"]
+      "@pipes/*": [
+        "src/app/pipes/*"
+      ],
+      "app/*": [
+        "src/app/*"
+      ]
     },
     "importHelpers": true,
     "module": "es2022",
@@ -12,7 +16,7 @@
     "outDir": "./dist/out-tsc",
     "sourceMap": true,
     "declaration": false,
-    "moduleResolution": "node",
+    "moduleResolution": "bundler",
     "emitDecoratorMetadata": true,
     "experimentalDecorators": true,
     "noImplicitAny": true,