Fix usePrevious export/import issue

Author: Felix Beceic

libs/upload/src/DragZone.tsx

@@ -23,12 +23,12 @@ import UploadDropZone from "@rpldy/upload-drop-zone";
 import { Field, FieldProps } from "@tiller-ds/form-elements";
 import { LoadingIcon } from "@tiller-ds/icons";
 import { ComponentTokens, cx, TokenProps, useIcon, useTokens } from "@tiller-ds/theme";
+import { usePrevious } from "@tiller-ds/util";
 
 import UploadyWrapper, { UploadyWrapperProps } from "./UploadyWrapper";
 
 import { UseFileUpload, File, defaultUploadResponseMapper } from "./useFileUpload";
 import { BatchItem } from "@rpldy/shared";
-import { usePrevious } from "../../util/src/usePrevious";
 
 export type DragZoneProps<T extends File> = {
   /**

libs/util/src/index.tsx

@@ -24,6 +24,7 @@ export type DisplayType = InternalDisplayType;
 export { default as useInterval } from "./useInterval";
 export { default as useTimeout } from "./useTimeout";
 export { default as useViewport } from "./useViewport";
+export { default as usePrevious } from "./usePrevious";
 
 export { default as createNamedContext } from "./createNamedContext";
 export {

libs/util/src/usePrevious.tsx

@@ -1,3 +1,20 @@
+/*
+ *    Copyright 2023 CROZ d.o.o, the original author or authors.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ *
+ */
+
 import { useEffect, useRef } from "react";
 
 export const usePrevious = <T extends unknown>(value: T): T | undefined => {
@@ -7,3 +24,5 @@ export const usePrevious = <T extends unknown>(value: T): T | undefined => {
   });
   return ref.current;
 };
+
+export default usePrevious;