feat: type `currentTarget` in `on` function

.changeset/bumpy-radios-live.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+type `currentTarget` in `on` function

packages/svelte/src/events/public.d.ts

@@ -30,7 +30,10 @@ export function on<Type extends keyof DocumentEventMap>(
 export function on<Element extends HTMLElement, Type extends keyof HTMLElementEventMap>(
 	element: Element,
 	type: Type,
-	handler: (this: Element, event: HTMLElementEventMap[Type]) => any,
+	handler: (
+		this: Element,
+		event: HTMLElementEventMap[Type] & { currentTarget: EventTarget & Element }
+	) => any,
 	options?: AddEventListenerOptions | undefined
 ): () => void;
 /**

packages/svelte/tests/types/events.ts

@@ -8,6 +8,8 @@ on(window, 'click', (e) => e.button);
 
 on(document, 'click', (e) => e.button);
 
+on(document.createElement('input'), 'input', (e) => e.currentTarget?.value);
+
 on(
 	document.body,
 	'clidck',

packages/svelte/types/index.d.ts

@@ -2823,7 +2823,10 @@ declare module 'svelte/events' {
 	export function on<Element extends HTMLElement, Type extends keyof HTMLElementEventMap>(
 		element: Element,
 		type: Type,
-		handler: (this: Element, event: HTMLElementEventMap[Type]) => any,
+		handler: (
+			this: Element,
+			event: HTMLElementEventMap[Type] & { currentTarget: EventTarget & Element }
+		) => any,
 		options?: AddEventListenerOptions | undefined
 	): () => void;
 	/**