diff --git a/src/extras/core/Interpolations.d.ts b/src/extras/core/Interpolations.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2f811a8d56fc428f8c139524cbfb8710fabe9213
--- /dev/null
+++ b/src/extras/core/Interpolations.d.ts
@@ -0,0 +1,5 @@
+export namespace Interpolations {
+	export function CatmullRom(): any;
+	export function QuadraticBezier(): any;
+	export function CubicBezier(): any;
+}