Fix MusicKit.configure() return type to Promise<MusicKitInstance> (DefinitelyTyped#74310)

Author: pondorasti

types/musickit-js/MusicKit.d.ts

@@ -79,7 +79,7 @@ declare namespace MusicKit {
     /**
      * Configure a MusicKit instance.
      */
-    function configure(configuration: Configuration): MusicKitInstance;
+    function configure(configuration: Configuration): Promise<MusicKitInstance>;
     /**
      * Returns the configured MusicKit instance.
      */

types/musickit-js/test/musickit-js-tests.ts

@@ -1,10 +1,13 @@
-MusicKit.configure({
-    app: {
-        build: "1.0",
-        name: "PLAYER_NAME",
-    },
-    developerToken: "devToken",
-});
+async function testConfigure() {
+    // $ExpectType MusicKitInstance
+    const instance = await MusicKit.configure({
+        app: {
+            build: "1.0",
+            name: "PLAYER_NAME",
+        },
+        developerToken: "devToken",
+    });
+}
 
 const player = MusicKit.getInstance();