Jesus sucks

backend/frontend/node_modules/@restart/hooks/esm/useWillUnmount.js

@@ -0,0 +1,13 @@
+import useUpdatedRef from './useUpdatedRef';
+import { useEffect } from 'react';
+
+/**
+ * Attach a callback that fires when a component unmounts
+ *
+ * @param fn Handler to run when the component unmounts
+ * @category effects
+ */
+export default function useWillUnmount(fn) {
+  const onUnmount = useUpdatedRef(fn);
+  useEffect(() => () => onUnmount.current(), []);
+}