Fix the type of AudioMessage.duration from string to number (#60) (#61)

Naetmul · Hyunje Jun · commit 92709bb1ca42 · 2018-03-13T13:57:37.000+09:00
diff --git a/lib/types.ts b/lib/types.ts
@@ -149,7 +149,7 @@ export type VideoMessage = {
 export type AudioMessage = {
   type: "audio";
   originalContentUrl: string;
-  duration: string;
+  duration: number;
 };
 
 export type LocationMessage = {
