diff --git a/src/runtime/transition/index.ts b/src/runtime/transition/index.ts
index 650688b6e0fd..e81ffe1f01e1 100644
--- a/src/runtime/transition/index.ts
+++ b/src/runtime/transition/index.ts
@@ -1,7 +1,7 @@
 import { cubicOut, cubicInOut, linear } from 'svelte/easing';
 import { assign, is_function } from 'svelte/internal';
 
-type EasingFunction = (t: number) => number;
+export type EasingFunction = (t: number) => number;
 
 export interface TransitionConfig {
 	delay?: number;