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node_modules/@fluentui/react-hooks/lib/usePrevious.js

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+import * as React from 'react';
+/**
+ * Hook keeping track of a given value from a previous execution of the component the Hook is used in.
+ *
+ * See [React Hooks FAQ](https://reactjs.org/docs/hooks-faq.html#how-to-get-the-previous-props-or-state)
+ */
+export function usePrevious(value) {
+    var ref = React.useRef(undefined);
+    React.useEffect(function () {
+        ref.current = value;
+    });
+    return ref.current;
+}
+//# sourceMappingURL=usePrevious.js.map