add tests

types/carbon__motion/carbon__motion-tests.ts

@@ -0,0 +1,8 @@
+import { easings, motion } from "@carbon/motion";
+
+const easingNames = Object.keys(easings);
+
+const firstEasing = easingNames[0];
+const firstMode = Object.keys(firstEasing)[0];
+
+motion(firstEasing, firstMode);

types/carbon__motion/index.d.ts

@@ -18,11 +18,8 @@ export const easings: {
     };
 };
 
-export function motion(name: any, mode: any): any;
+export function motion(name: string, mode: string): string;
 
 export namespace motion {
-    const prototype: {
-    };
-
+    const prototype: {};
 }
-