add HashChanged component

packages/app/src/components/EventListeneres/HashChanged.tsx

@@ -0,0 +1,40 @@
+import { FC, useCallback, useEffect } from 'react';
+
+import { EditorMode, useEditorMode } from '~/stores/ui';
+import { useIsEditable } from '~/stores/context';
+
+const HashChanged: FC<void> = () => {
+  const { data: isEditable } = useIsEditable();
+  const { mutate: mutateEditorMode } = useEditorMode();
+
+  const hashchangeHandler = useCallback(() => {
+    const { hash } = window.location;
+
+    if (hash == null) {
+      return;
+    }
+
+    if (hash === '#edit') {
+      mutateEditorMode(EditorMode.Editor);
+    }
+  }, [mutateEditorMode]);
+
+  // setup effect
+  useEffect(() => {
+    if (!isEditable) {
+      return;
+    }
+
+    window.addEventListener('hashchange', hashchangeHandler);
+
+    // return remove handler
+    return function cleanup() {
+      window.removeEventListener('hashchange', hashchangeHandler);
+    };
+
+  }, [hashchangeHandler, isEditable, mutateEditorMode]);
+
+  return null;
+};
+
+export default HashChanged;