feat: hotjar 추가 (#131)

Author: sikkzz

src/App.tsx

@@ -1,6 +1,10 @@
 import { Outlet } from "react-router-dom";
 
+import useHotjar from "@/hooks/common/useHotjar";
+
 const App = () => {
+  useHotjar();
+
   return (
     <main>
       <Outlet />

src/hooks/common/useHotjar.ts

@@ -0,0 +1,27 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+import { useEffect } from "react";
+
+const useHotjar = () => {
+  useEffect(() => {
+    const hotjarId = import.meta.env.VITE_HOTJAR_ID;
+
+    if (import.meta.env.PROD && hotjarId) {
+      (function (h: any, o: any, t: any, j: any, a?: any, r?: any) {
+        (h.hj as any) =
+          h.hj ||
+          function () {
+            // eslint-disable-next-line prefer-rest-params
+            (h.hj.q = h.hj.q || []).push(arguments);
+          };
+        h._hjSettings = { hjid: parseInt(hotjarId, 10), hjsv: 6 };
+        a = o.getElementsByTagName("head")[0];
+        r = o.createElement("script");
+        r.async = 1;
+        r.src = t + h._hjSettings.hjid + j + h._hjSettings.hjsv;
+        a.appendChild(r);
+      })(window, document, "https://static.hotjar.com/c/hotjar-", ".js?sv=");
+    }
+  }, []);
+};
+
+export default useHotjar;