up n_m

node_modules/@docusaurus/theme-common/lib/utils/useLocationChange.js

@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+import { useEffect } from 'react';
+import { useLocation } from '@docusaurus/router';
+import { useEvent, usePrevious } from './reactUtils';
+/**
+ * Fires an effect when the location changes (which includes hash, query, etc.).
+ * Importantly, doesn't fire when there's no previous location: see
+ * https://github.com/facebook/docusaurus/pull/6696
+ */
+export function useLocationChange(onLocationChange) {
+    const location = useLocation();
+    const previousLocation = usePrevious(location);
+    const onLocationChangeDynamic = useEvent(onLocationChange);
+    useEffect(() => {
+        if (!previousLocation) {
+            return;
+        }
+        if (location !== previousLocation) {
+            onLocationChangeDynamic({
+                location,
+                previousLocation,
+            });
+        }
+    }, [onLocationChangeDynamic, location, previousLocation]);
+}
+//# sourceMappingURL=useLocationChange.js.map