diff --git a/src/runtime/motion/spring.ts b/src/runtime/motion/spring.ts
index ff625ec41f2e..64d17a058b26 100644
--- a/src/runtime/motion/spring.ts
+++ b/src/runtime/motion/spring.ts
@@ -58,7 +58,7 @@ interface SpringUpdateOpts {
 
 type Updater<T> = (target_value: T, value: T) => T;
 
-interface Spring<T> extends Readable<T>{
+export interface Spring<T> extends Readable<T>{
 	set: (new_value: T, opts?: SpringUpdateOpts) => Promise<void>;
 	update: (fn: Updater<T>, opts?: SpringUpdateOpts) => Promise<void>;
 	precision: number;
diff --git a/src/runtime/motion/tweened.ts b/src/runtime/motion/tweened.ts
index 83434cdff62f..f0ede9add731 100644
--- a/src/runtime/motion/tweened.ts
+++ b/src/runtime/motion/tweened.ts
@@ -63,7 +63,7 @@ interface Options<T> {
 
 type Updater<T> = (target_value: T, value: T) => T;
 
-interface Tweened<T> extends Readable<T> {
+export interface Tweened<T> extends Readable<T> {
 	set(value: T, opts?: Options<T>): Promise<void>;
 
 	update(updater: Updater<T>, opts?: Options<T>): Promise<void>;