diff --git a/angular/demo/bootstrap/src/app/samples/alert/config.route.ts b/angular/demo/bootstrap/src/app/samples/alert/config.route.ts
index cb7113c30ac..bcac3b6a87c 100644
--- a/angular/demo/bootstrap/src/app/samples/alert/config.route.ts
+++ b/angular/demo/bootstrap/src/app/samples/alert/config.route.ts
@@ -50,7 +50,7 @@ export default class ConfigAlertComponent {
 	readonly dismissible = signal(true);
 	readonly type = signal(this.styleList[0].value);
 
-	showAlert(alert: AlertComponent) {
-		alert.api.open();
+	async showAlert(alert: AlertComponent) {
+		await alert.api.open();
 	}
 }
diff --git a/core/src/components/alert/alert.spec.ts b/core/src/components/alert/alert.spec.ts
index 195e65c6f04..afcf540212d 100644
--- a/core/src/components/alert/alert.spec.ts
+++ b/core/src/components/alert/alert.spec.ts
@@ -28,7 +28,7 @@ describe(`Alert`, () => {
 	test(`should close on method call`, () => {
 		const expectedState = state;
 		expect(expectedState.visible).toBe(true);
-		alert.api.close();
+		void alert.api.close();
 		expectedState.visible = false;
 		expectedState.hidden = true;
 		expect(state).toEqual(expectedState);
@@ -38,7 +38,7 @@ describe(`Alert`, () => {
 		alert.patch({visible: false});
 		const expectedState = state;
 		expect(expectedState.visible).toBe(false);
-		alert.api.open();
+		void alert.api.open();
 		expectedState.visible = true;
 		expectedState.hidden = false;
 		expect(state).toEqual(expectedState);
@@ -71,13 +71,13 @@ describe(`Alert`, () => {
 		});
 		alertEvents.directives.transitionDirective(element);
 
-		alertEvents.api.close();
+		void alertEvents.api.close();
 		await promiseOnHidden.promise;
 		expect(onVisibleChangeCounter).toBe(1);
 		expect(onShownCounter).toBe(0);
 		expect(onHiddenCounter).toBe(1);
 
-		alertEvents.api.open();
+		void alertEvents.api.open();
 		await promiseOnShown.promise;
 		expect(onVisibleChangeCounter).toBe(2);
 		expect(onShownCounter).toBe(1);
diff --git a/core/src/components/alert/common.spec.ts b/core/src/components/alert/common.spec.ts
index 36f825f2c06..18c7fc19618 100644
--- a/core/src/components/alert/common.spec.ts
+++ b/core/src/components/alert/common.spec.ts
@@ -28,7 +28,7 @@ describe(`Common Alert`, () => {
 	test(`should close on method call`, () => {
 		const expectedState = state;
 		expect(expectedState.visible).toBe(true);
-		commonAlert.api.close();
+		void commonAlert.api.close();
 		expectedState.visible = false;
 		expectedState.hidden = true;
 		expect(state).toEqual(expectedState);
@@ -38,7 +38,7 @@ describe(`Common Alert`, () => {
 		commonAlert.patch({visible: false});
 		const expectedState = state;
 		expect(expectedState.visible).toBe(false);
-		commonAlert.api.open();
+		void commonAlert.api.open();
 		expectedState.visible = true;
 		expectedState.hidden = false;
 		expect(state).toEqual(expectedState);
@@ -71,13 +71,13 @@ describe(`Common Alert`, () => {
 		});
 		alertEvents.directives.transitionDirective(element);
 
-		alertEvents.api.close();
+		void alertEvents.api.close();
 		await promiseOnHidden.promise;
 		expect(onVisibleChangeCounter).toBe(1);
 		expect(onShownCounter).toBe(0);
 		expect(onHiddenCounter).toBe(1);
 
-		alertEvents.api.open();
+		void alertEvents.api.open();
 		await promiseOnShown.promise;
 		expect(onVisibleChangeCounter).toBe(2);
 		expect(onShownCounter).toBe(1);
diff --git a/core/src/components/alert/common.ts b/core/src/components/alert/common.ts
index 44702d1f344..c0b8f210140 100644
--- a/core/src/components/alert/common.ts
+++ b/core/src/components/alert/common.ts
@@ -115,12 +115,12 @@ export interface CommonAlertApi {
 	/**
 	 * Triggers alert closing programmatically (same as clicking on the close button (×)).
 	 */
-	close(): void;
+	close(): Promise<void>;
 
 	/**
 	 * Triggers the alert to be displayed for the user.
 	 */
-	open(): void;
+	open(): Promise<void>;
 }
 
 /**
diff --git a/core/src/components/collapse/collapse.ts b/core/src/components/collapse/collapse.ts
index 7a96cb7f11d..6c0f3297398 100644
--- a/core/src/components/collapse/collapse.ts
+++ b/core/src/components/collapse/collapse.ts
@@ -103,17 +103,17 @@ export interface CollapseApi {
 	/**
 	 * Triggers collapse closing programmatically.
 	 */
-	close(): void;
+	close(): Promise<void>;
 
 	/**
 	 * Triggers the collapse content to be displayed for the user.
 	 */
-	open(): void;
+	open(): Promise<void>;
 
 	/**
 	 * Toggles the collapse content visibility.
 	 */
-	toggle(): void;
+	toggle(): Promise<void>;
 }
 
 /**
diff --git a/core/src/components/toast/toast.spec.ts b/core/src/components/toast/toast.spec.ts
index d170df879f1..99dd1ae39e1 100644
--- a/core/src/components/toast/toast.spec.ts
+++ b/core/src/components/toast/toast.spec.ts
@@ -31,7 +31,7 @@ describe(`Toast`, () => {
 	test(`should close on method call`, () => {
 		const expectedState = state;
 		expect(expectedState.visible).toBe(true);
-		toast.api.close();
+		void toast.api.close();
 		expect(state).toEqual(
 			assign(expectedState, {
 				visible: false,
@@ -44,7 +44,7 @@ describe(`Toast`, () => {
 		toast.patch({visible: false});
 		const expectedState = state;
 		expect(expectedState.visible).toBe(false);
-		toast.api.open();
+		void toast.api.open();
 		expect(state).toEqual(
 			assign(expectedState, {
 				visible: true,
@@ -80,13 +80,13 @@ describe(`Toast`, () => {
 		});
 		toastEvents.directives.transitionDirective(element);
 
-		toastEvents.api.close();
+		void toastEvents.api.close();
 		await promiseOnHidden.promise;
 		expect(onVisibleChangeCounter).toBe(1);
 		expect(onShownCounter).toBe(0);
 		expect(onHiddenCounter).toBe(1);
 
-		toastEvents.api.open();
+		void toastEvents.api.open();
 		await promiseOnShown.promise;
 		expect(onVisibleChangeCounter).toBe(2);
 		expect(onShownCounter).toBe(1);
diff --git a/react/demo/src/bootstrap/samples/toast/Action.route.tsx b/react/demo/src/bootstrap/samples/toast/Action.route.tsx
index 8b413998745..da1e9aa97e0 100644
--- a/react/demo/src/bootstrap/samples/toast/Action.route.tsx
+++ b/react/demo/src/bootstrap/samples/toast/Action.route.tsx
@@ -9,8 +9,8 @@ import {useRef} from 'react';
 const ActionToastDemo = () => {
 	const refToast = useRef<ToastApi>(null);
 
-	function reset() {
-		refToast.current?.open();
+	async function reset() {
+		await refToast.current?.open();
 	}
 
 	return (
diff --git a/react/demo/src/bootstrap/samples/toast/Default.route.tsx b/react/demo/src/bootstrap/samples/toast/Default.route.tsx
index 6703773e954..c05a487e782 100644
--- a/react/demo/src/bootstrap/samples/toast/Default.route.tsx
+++ b/react/demo/src/bootstrap/samples/toast/Default.route.tsx
@@ -5,8 +5,8 @@ import {useRef} from 'react';
 
 const DefaultToastDemo = () => {
 	const refToast = useRef<ToastApi>(null);
-	function reset() {
-		refToast.current!.open();
+	async function reset() {
+		await refToast.current!.open();
 	}
 
 	return (