diff --git a/packages/svelte/types/index.d.ts b/packages/svelte/types/index.d.ts
index 15ad464357..5e3ca77eb5 100644
--- a/packages/svelte/types/index.d.ts
+++ b/packages/svelte/types/index.d.ts
@@ -348,6 +348,22 @@ declare module 'svelte' {
 				 */
 				props: Props;
 			});
+
+	/**
+	 * Represents work that is happening off-screen, such as data being preloaded
+	 * in anticipation of the user navigating
+	 * @since 5.42
+	 */
+	export interface Fork {
+		/**
+		 * Commit the fork. The promise will resolve once the state change has been applied
+		 */
+		commit(): Promise<void>;
+		/**
+		 * Discard the fork
+		 */
+		discard(): void;
+	}
 	/**
 	 * Returns an [`AbortSignal`](https://developer.mozilla.org/en-US/docs/Web/API/AbortSignal) that aborts when the current [derived](https://svelte.dev/docs/svelte/$derived) or [effect](https://svelte.dev/docs/svelte/$effect) re-runs or is destroyed.
 	 *
@@ -465,10 +481,7 @@ declare module 'svelte' {
 	 *
 	 * @since 5.42
 	 */
-	export function fork(fn: () => void): {
-		commit: () => void;
-		discard: () => void;
-	};
+	export function fork(fn: () => void): Fork;
 	/**
 	 * Returns a `[get, set]` pair of functions for working with context in a type-safe way.
 	 *