pass object

packages/svelte/src/ambient.d.ts

@@ -234,7 +234,7 @@ declare namespace $derived {
  * https://svelte.dev/docs/svelte/$effect
  * @param fn The function to execute
  */
-declare function $effect(fn: (signal: AbortSignal) => void | ((signal: AbortSignal) => void)): void;
+declare function $effect(fn: (input: { signal: AbortSignal }) => void | ((input: { signal: AbortSignal }) => void)): void;
 
 declare namespace $effect {
 	/**
@@ -253,7 +253,7 @@ declare namespace $effect {
 	 * https://svelte.dev/docs/svelte/$effect#$effect.pre
 	 * @param fn The function to execute
 	 */
-	export function pre(fn: (signal: AbortSignal) => void | ((signal: AbortSignal) => void)): void;
+	export function pre(fn: (input: { signal: AbortSignal }) => void | ((input: { signal: AbortSignal }) => void)): void;
 
 	/**
 	 * The `$effect.tracking` rune is an advanced feature that tells you whether or not the code is running inside a tracking context, such as an effect or inside your template.

packages/svelte/src/internal/client/runtime.js

@@ -403,12 +403,13 @@ export function update_reaction(reaction) {
 
 		if ((flags & EFFECT) !== 0 && /** @type {Function} */ (reaction.fn).length > 0) {
 			var controller = new AbortController();
-			var inner = /** @type {Function} */ (0, reaction.fn)(controller.signal);
+			var signal = controller.signal;
+			var inner = /** @type {Function} */ (0, reaction.fn)({ signal });
 
 			result = () => {
 				controller.abort('effect destroyed');
 				inner?.();
-			}
+			};
 		} else {
 			result = /** @type {Function} */ (0, reaction.fn)();
 		}

packages/svelte/types/index.d.ts

@@ -2892,7 +2892,7 @@ declare namespace $derived {
  * https://svelte.dev/docs/svelte/$effect
  * @param fn The function to execute
  */
-declare function $effect(fn: (signal: AbortSignal) => void | ((signal: AbortSignal) => void)): void;
+declare function $effect(fn: (input: { signal: AbortSignal }) => void | ((input: { signal: AbortSignal }) => void)): void;
 
 declare namespace $effect {
 	/**
@@ -2911,7 +2911,7 @@ declare namespace $effect {
 	 * https://svelte.dev/docs/svelte/$effect#$effect.pre
 	 * @param fn The function to execute
 	 */
-	export function pre(fn: (signal: AbortSignal) => void | ((signal: AbortSignal) => void)): void;
+	export function pre(fn: (input: { signal: AbortSignal }) => void | ((input: { signal: AbortSignal }) => void)): void;
 
 	/**
 	 * The `$effect.tracking` rune is an advanced feature that tells you whether or not the code is running inside a tracking context, such as an effect or inside your template.