revamp template

src/hooks/useIsMounted.ts

@@ -0,0 +1,18 @@
+// see: https://usehooks-ts.com/react-hook/use-is-mounted
+import { useCallback, useEffect, useRef } from 'react';
+
+const useIsMounted = () => {
+  const isMounted = useRef(false);
+
+  useEffect(() => {
+    isMounted.current = true;
+
+    return () => {
+      isMounted.current = false;
+    };
+  }, []);
+
+  return useCallback(() => isMounted.current, []);
+};
+
+export { useIsMounted };