Fixing type for load/sort functions in useAsyncList hook (#2683)

* Revert "fix issue #1878, added async to the sort function (#2658)"

This reverts commit a984616.

* updating type for sort in useAsyncList

Co-authored-by: Robert Snow <rsnow@adobe.com>
Co-authored-by: Danni <drobinson@livefyre.com>

Author: 3 people

packages/@react-spectrum/table/stories/Table.stories.tsx

@@ -1045,7 +1045,7 @@ function AsyncLoadingExample() {
       let json = await res.json();
       return {items: json.data.children, cursor: json.data.after};
     },
-    async sort({items, sortDescriptor}) {
+    sort({items, sortDescriptor}) {
       return {
         items: items.slice().sort((a, b) => {
           let cmp = a.data[sortDescriptor.column] < b.data[sortDescriptor.column] ? -1 : 1;

packages/@react-stately/data/docs/useAsyncList.mdx

@@ -135,7 +135,7 @@ let list = useAsyncList({
   async load({signal}) {
     // Same load function as before
   },
-  async sort({items, sortDescriptor}) {
+  sort({items, sortDescriptor}) {
     return {
       items: items.sort((a, b) => {
         // Compare the items by the sorted column

packages/@react-stately/data/src/useAsyncList.ts

@@ -32,7 +32,8 @@ export interface AsyncListOptions<T, C> {
   sort?: AsyncListLoadFunction<T, C>
 }
 
-type AsyncListLoadFunction<T, C> = (state: AsyncListLoadOptions<T, C>) => Promise<AsyncListStateUpdate<T, C>>;
+type AsyncListLoadFunction<T, C> = (state: AsyncListLoadOptions<T, C>) => AsyncListStateUpdate<T, C> | Promise<AsyncListStateUpdate<T, C>>;
+
 interface AsyncListLoadOptions<T, C> {
   /** The items currently in the list. */
   items: T[],