Pre-Angular upgrade fixes (#5709)

* code fixes

* code fixes

* more code fixes

* even more fixes

* add missing typescript for cli

* rollback info drawer test changes

* use npx for cli commands

* restore attach providers

lib/core/viewer/viewer.module.ts

@@ -46,7 +46,6 @@ import { A11yModule } from '@angular/cdk/a11y';
 
 @NgModule({
     imports: [
-        ExtensionsModule,
         CommonModule,
         MaterialModule,
         TranslateModule.forChild(),
@@ -56,7 +55,8 @@ import { A11yModule } from '@angular/cdk/a11y';
         PipeModule,
         FlexLayoutModule,
         DirectiveModule,
-        A11yModule
+        A11yModule,
+        ExtensionsModule
     ],
     declarations: [
         PdfPasswordDialogComponent,