chore: add umami typing

src/lib/umami.ts

@@ -0,0 +1,43 @@
+declare global {
+    const umami: Umami;
+}
+
+/**
+ * @see {@link https://umami.is/docs/tracker-functions|Umami Docs}
+ */
+interface Umami {
+    track(): Promise<string> | undefined;
+    track(
+        event_name: string,
+        event_data?: Record<string, unknown>,
+    ): Promise<string> | undefined;
+    track(custom_payload: {
+        website: string;
+        [key: string]: unknown;
+    }): Promise<string> | undefined;
+    track(
+        callback: (props: {
+            hostname: string;
+            language: string;
+            referrer: string;
+            screen: string;
+            title: string;
+            url: string;
+            website: string;
+        }) => { website: string; [key: string]: unknown },
+    ): Promise<string> | undefined;
+
+    /** Pass in your own ID to identify a user. */
+    identify(identity_id: string): Promise<void>;
+
+    /** Save data about the current session. */
+    identify(
+        identity_id: string,
+        data: Record<string, unknown>,
+    ): Promise<void>;
+
+    /** To save data without a unique ID, pass in only a JSON object. */
+    identify(data: Record<string, unknown>): Promise<void>;
+}
+
+export {};