fix(analytics): change method return types from void to Promise<void>

The Analytics interface declared track(), page(), identify(), and setEnabled()
as returning void. The background implementation returns Promise<void> (async
functions), which is assignable to void. But users calling await analytics.track()
get TS80007 since the declared type is void.

Changed the interface return types to Promise<void> and updated the
MethodForwarder type and implementation accordingly.

Author: muhammedaksam

packages/analytics/modules/analytics/client.ts

@@ -25,7 +25,7 @@ type AnalyticsMethod =
 
 type MethodForwarder = <K extends keyof Analytics>(
   fn: K,
-) => (...args: Parameters<Analytics[K]>) => void;
+) => (...args: Parameters<Analytics[K]>) => Promise<void>;
 
 const ANALYTICS_PORT = '@wxt-dev/analytics';
 
@@ -238,6 +238,7 @@ function createFrontendAnalytics(): Analytics {
     (fn) =>
     (...args) => {
       port.postMessage({ fn, args: [...args, getFrontendMetadata()] });
+      return Promise.resolve();
     };
 
   const analytics: Analytics = {

packages/analytics/modules/analytics/types.ts

@@ -1,20 +1,20 @@
 export interface Analytics {
   /** Report a page change. */
-  page: (url: string) => void;
+  page: (url: string) => Promise<void>;
   /** Report a custom event. */
   track: (
     eventName: string,
     eventProperties?: Record<string, string | undefined>,
-  ) => void;
+  ) => Promise<void>;
   /** Save information about the user. */
-  identify: (userId: string, userProperties?: Record<string, string>) => void;
+  identify: (userId: string, userProperties?: Record<string, string>) => Promise<void>;
   /**
    * Automatically setup and track user interactions, returning a function to
    * remove any listeners that were setup.
    */
   autoTrack: (root: Document | ShadowRoot | Element) => () => void;
   /** Calls `config.enabled.setValue`. */
-  setEnabled: (enabled: boolean) => void;
+  setEnabled: (enabled: boolean) => Promise<void>;
 }
 
 export interface AnalyticsConfig {