usePrevious hook

webapp/src/hook/Previous.js

@@ -0,0 +1,24 @@
+import { useRef, useEffect } from 'react';
+
+export default function usePrevious(value) {
+    const ref = useRef();
+    
+    useEffect(() => {
+        ref.current = value;
+    });
+
+    return ref.current;
+}
+
+/* Usage example
+
+const useLocationChange = (action) => {
+    const location = useLocation();
+    const prevLocation = usePrevious(location);
+
+    useEffect(() => { 
+        action(location, prevLocation);
+    }, [location]);
+}
+
+*/