feat(collapse): migrated to standalone

libs/doc-pages/collapse/src/lib/collapse.module.ts

@@ -17,7 +17,7 @@ export { CollapseSectionComponent } from './collapse-section.component';
         ...DEMO_COMPONENTS
     ],
     imports: [
-        CollapseModule.forRoot(),
+        CollapseModule,
         CommonModule,
         FormsModule,
         DocsModule,

libs/doc-pages/collapse/src/lib/docs/usage.md

@@ -5,7 +5,7 @@ import { CollapseModule } from 'ngx-bootstrap/collapse';
 @NgModule({
   imports: [
     BrowserAnimationsModule,
-    CollapseModule.forRoot(),
+    CollapseModule,
     ...
   ]
 })

src/collapse/collapse.directive.ts

@@ -21,12 +21,13 @@ import {
 } from './collapse-animations';
 
 @Directive({
-  selector: '[collapse]',
-  exportAs: 'bs-collapse',
-  // eslint-disable-next-line @angular-eslint/no-host-metadata-property
-  host: {
-    '[class.collapse]': 'true'
-  }
+    selector: '[collapse]',
+    exportAs: 'bs-collapse',
+    // eslint-disable-next-line @angular-eslint/no-host-metadata-property
+    host: {
+        '[class.collapse]': 'true'
+    },
+    standalone: true
 })
 export class CollapseDirective implements AfterViewChecked {
   /** This event fires as soon as content collapses */

src/collapse/collapse.module.ts

@@ -1,13 +1,9 @@
-import { NgModule, ModuleWithProviders } from '@angular/core';
+import { NgModule } from '@angular/core';
 
 import { CollapseDirective } from './collapse.directive';
 
 @NgModule({
-  declarations: [CollapseDirective],
-  exports: [CollapseDirective]
+    imports: [CollapseDirective],
+    exports: [CollapseDirective]
 })
-export class CollapseModule {
-  static forRoot(): ModuleWithProviders<CollapseModule> {
-    return { ngModule: CollapseModule, providers: [] };
-  }
-}
+export class CollapseModule {}

src/collapse/testing/collapse.directive.spec.ts

@@ -13,8 +13,10 @@ const template = `
 `;
 
 @Component({
-  selector: 'collapse-test',
-  template
+    selector: 'collapse-test',
+    template,
+    standalone: true,
+    imports: [CollapseModule]
 })
 class TestCollapseComponent {}
 
@@ -28,12 +30,12 @@ describe('Directive: Collapse', () => {
 
   beforeEach(() => {
     TestBed.configureTestingModule({
-      declarations: [TestCollapseComponent],
-      imports: [
+    imports: [
         CollapseModule,
-        BrowserAnimationsModule
-      ]
-    });
+        BrowserAnimationsModule,
+        TestCollapseComponent
+    ]
+});
     fixture = TestBed.createComponent(TestCollapseComponent);
     fixture.detectChanges();
     context = fixture.componentInstance;