fix: collections nested within Activities (React 19.2)

package.json

@@ -178,10 +178,10 @@
     "postcss": "^8.4.24",
     "postcss-custom-properties": "^13.2.0",
     "postcss-import": "^15.1.0",
-    "react": "^19.1.0",
-    "react-dom": "^19.1.0",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
     "react-frame-component": "^5.0.0",
-    "react-test-renderer": "^19.1.0",
+    "react-test-renderer": "^19.2.0",
     "recast": "^0.23",
     "recursive-readdir": "^2.2.2",
     "regenerator-runtime": "0.13.3",

packages/@react-aria/collections/src/CollectionBuilder.tsx

@@ -19,6 +19,7 @@ import {forwardRefType, Key, Node} from '@react-types/shared';
 import {Hidden} from './Hidden';
 import React, {createContext, ForwardedRef, forwardRef, JSX, ReactElement, ReactNode, useCallback, useContext, useMemo, useRef, useState} from 'react';
 import {useIsSSR} from '@react-aria/ssr';
+import {useLayoutEffect} from '@react-aria/utils';
 import {useSyncExternalStore as useSyncExternalStoreShim} from 'use-sync-external-store/shim/index.js';
 
 const ShallowRenderContext = createContext(false);
@@ -113,6 +114,23 @@ function useCollectionDocument<T extends object, C extends BaseCollection<T>>(cr
     return document.getCollection();
   }, [document]);
   let collection = useSyncExternalStore(subscribe, getSnapshot, getServerSnapshot);
+
+  // React 19.2 introduced activities, which when started as hidden on the dom can play funky with the collection
+  // To avoid this we force a one time re-render if the collection fails to populate
+  const [, forceStoreRerender] = useState(0); // simple state to force a re-render
+  useLayoutEffect(function forceRefreshCollection() {
+    // Do not do anything if the collection has been pre-populated successfully
+    if (collection.size > 0) {
+      return;
+    }
+    // Re-create the collection
+    const nextValue = getSnapshot();
+    if (nextValue.size > 0) {
+      forceStoreRerender(c => c + 1);
+    }
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [collection.size === 0]); // don't run effect once we have a populated collection
+
   return {collection, document};
 }
 

packages/dev/docs/package.json

@@ -29,8 +29,8 @@
     "highlight.js": "9.18.1",
     "markdown-to-jsx": "^6.11.0",
     "quicklink": "^2.3.0",
-    "react": "^19.1.0",
-    "react-dom": "^19.1.0",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
     "react-lowlight": "^2.0.0"
   },
   "peerDependencies": {

packages/dev/s2-docs/package.json

@@ -49,10 +49,10 @@
     "json5": "^2.2.3",
     "lz-string": "^1.5.0",
     "markdown-to-jsx": "^6.11.0",
-    "react": "^19",
+    "react": "^19.2.0",
     "react-aria": "^3.40.0",
     "react-aria-components": "^1.7.1",
-    "react-dom": "^19",
+    "react-dom": "^19.2.0",
     "react-stately": "^3.38.0",
     "remark-mdx": "^3.1.0",
     "remark-parse": "^11.0.0",

packages/react-aria-components/test/ListBox.test.js

@@ -1861,4 +1861,40 @@ describe('ListBox', () => {
       expect(onClick).toHaveBeenCalledTimes(1);
     });
   });
+
+  if (React.version.startsWith('19')) {
+    it('supports Activity', async () => {
+      function ActivityListBox() {
+        let [mode, setMode] = React.useState('hidden');
+
+        return (
+          <>
+            <Button onPress={() => setMode(mode === 'hidden' ? 'visible' : 'hidden')}>
+              Set {mode === 'hidden' ? 'visible' : 'hidden'}
+            </Button>
+
+            <React.Activity mode={mode}>
+              <p>List should be visible</p>
+
+              <ListBox aria-label="Activity Listbox">
+                <ListBoxItem>Item 1</ListBoxItem>
+                <ListBoxItem>Item 2</ListBoxItem>
+                <ListBoxItem>Item 3</ListBoxItem>
+                <ListBoxItem>Item 4</ListBoxItem>
+                <ListBoxItem>Item 5</ListBoxItem>
+              </ListBox>
+            </React.Activity>
+          </>
+        );
+      }
+
+      let {getAllByRole, getByRole, queryAllByRole} = render(<ActivityListBox />);
+      let button = getByRole('button');
+      expect(queryAllByRole('option')).toHaveLength(0);
+      await user.click(button);
+      expect(getAllByRole('option')).toHaveLength(5);
+      await user.click(button);
+      expect(queryAllByRole('option')).toHaveLength(0);
+    });
+  }
 });

packages/react-aria-components/test/Tabs.test.js

@@ -641,4 +641,42 @@ describe('Tabs', () => {
       expect(onClick).toHaveBeenCalledTimes(1);
     });
   });
+
+  if (React.version.startsWith('19')) {
+    it('supports Activity', async () => {
+      function ActivityTabs() {
+        let [mode, setMode] = React.useState('hidden');
+
+        return (
+          <>
+            <Button onPress={() => setMode(mode === 'hidden' ? 'visible' : 'hidden')}>
+              Set {mode === 'hidden' ? 'visible' : 'hidden'}
+            </Button>
+            <React.Activity mode={mode}>
+              <Tabs>
+                <TabList aria-label="Test">
+                  <Tab id="a">A</Tab>
+                  <Tab id="b">B</Tab>
+                  <TooltipTrigger>
+                    <Tab id="c">C</Tab>
+                    <Tooltip>Test</Tooltip>
+                  </TooltipTrigger>
+                </TabList>
+                <TabPanel id="a">A</TabPanel>
+                <TabPanel id="b">B</TabPanel>
+                <TabPanel id="c">C</TabPanel>
+              </Tabs>
+            </React.Activity>
+          </>
+        );
+      }
+
+      let {getByRole, getAllByRole, queryAllByRole} = render(<ActivityTabs />);
+
+      let button = getByRole('button');
+      expect(queryAllByRole('tab')).toHaveLength(0);
+      await user.click(button);
+      expect(getAllByRole('tab')).toHaveLength(3);
+    });
+  }
 });

starters/docs/package.json

@@ -27,16 +27,16 @@
     "clsx": "^2.1.1",
     "lightningcss-loader": "^2.1.0",
     "lucide-react": "^0.517.0",
-    "react": "^19.1.0",
+    "react": "^19.2.0",
     "react-aria-components": "^1.14.0",
-    "react-dom": "^19.1.0",
+    "react-dom": "^19.2.0",
     "storybook": "^8.6.14",
     "storybook-dark-mode": "^4.0.2",
     "typescript": "^5.8.2"
   },
   "resolutions": {
-    "react": "19.1.0",
-    "react-dom": "19.1.0",
+    "react": "19.2.0",
+    "react-dom": "19.2.0",
     "@types/mime": "3.0.4",
     "jackspeak": "2.1.1"
   }

yarn.lock

@@ -6831,8 +6831,8 @@ __metadata:
     highlight.js: "npm:9.18.1"
     markdown-to-jsx: "npm:^6.11.0"
     quicklink: "npm:^2.3.0"
-    react: "npm:^19.1.0"
-    react-dom: "npm:^19.1.0"
+    react: "npm:^19.2.0"
+    react-dom: "npm:^19.2.0"
     react-lowlight: "npm:^2.0.0"
   peerDependencies:
     react: ^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0-rc.1
@@ -7383,10 +7383,10 @@ __metadata:
     lz-string: "npm:^1.5.0"
     markdown-to-jsx: "npm:^6.11.0"
     playwright: "npm:^1.57.0"
-    react: "npm:^19"
+    react: "npm:^19.2.0"
     react-aria: "npm:^3.40.0"
     react-aria-components: "npm:^1.7.1"
-    react-dom: "npm:^19"
+    react-dom: "npm:^19.2.0"
     react-stately: "npm:^3.38.0"
     remark-mdx: "npm:^3.1.0"
     remark-parse: "npm:^11.0.0"
@@ -24614,14 +24614,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-dom@npm:^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0, react-dom@npm:^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0, react-dom@npm:^19, react-dom@npm:^19.1.0":
-  version: 19.1.0
-  resolution: "react-dom@npm:19.1.0"
+"react-dom@npm:^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0, react-dom@npm:^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0, react-dom@npm:^19.2.0":
+  version: 19.2.1
+  resolution: "react-dom@npm:19.2.1"
   dependencies:
-    scheduler: "npm:^0.26.0"
+    scheduler: "npm:^0.27.0"
   peerDependencies:
-    react: ^19.1.0
-  checksum: 10c0/3e26e89bb6c67c9a6aa86cb888c7a7f8258f2e347a6d2a15299c17eb16e04c19194e3452bc3255bd34000a61e45e2cb51e46292392340432f133e5a5d2dfb5fc
+    react: ^19.2.1
+  checksum: 10c0/e56b6b3d72314df580ca800b70a69a21c6372703c8f45d9b5451ca6519faefb2496d76ffa9c5adb94136d2bbf2fd303d0dfc208a2cd77ede3132877471af9470
   languageName: node
   linkType: hard
 
@@ -24805,10 +24805,10 @@ __metadata:
     postcss: "npm:^8.4.24"
     postcss-custom-properties: "npm:^13.2.0"
     postcss-import: "npm:^15.1.0"
-    react: "npm:^19.1.0"
-    react-dom: "npm:^19.1.0"
+    react: "npm:^19.2.0"
+    react-dom: "npm:^19.2.0"
     react-frame-component: "npm:^5.0.0"
-    react-test-renderer: "npm:^19.1.0"
+    react-test-renderer: "npm:^19.2.0"
     recast: "npm:^0.23"
     recursive-readdir: "npm:^2.2.2"
     regenerator-runtime: "npm:0.13.3"
@@ -24894,17 +24894,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react@npm:^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0, react@npm:^19, react@npm:^19.1.0":
-  version: 19.1.0
-  resolution: "react@npm:19.1.0"
-  checksum: 10c0/530fb9a62237d54137a13d2cfb67a7db6a2156faed43eecc423f4713d9b20c6f2728b026b45e28fcd72e8eadb9e9ed4b089e99f5e295d2f0ad3134251bdd3698
-  languageName: node
-  linkType: hard
-
-"react@npm:^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0":
-  version: 19.1.1
-  resolution: "react@npm:19.1.1"
-  checksum: 10c0/8c9769a2dfd02e603af6445058325e6c8a24b47b185d0e461f66a6454765ddcaecb3f0a90184836c68bb509f3c38248359edbc42f0d07c23eb500a5c30c87b4e
+"react@npm:^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0, react@npm:^16.8.0 || ^17.0.0-rc.1 || ^18.0.0 || ^19.0.0, react@npm:^19.2.0":
+  version: 19.2.1
+  resolution: "react@npm:19.2.1"
+  checksum: 10c0/2b5eaf407abb3db84090434c20d6c5a8e447ab7abcd8fe9eaf1ddc299babcf31284ee9db7ea5671d21c85ac5298bd632fa1a7da1ed78d5b368a537f5e1cd5d62
   languageName: node
   linkType: hard
 
@@ -25889,6 +25882,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"scheduler@npm:^0.27.0":
+  version: 0.27.0
+  resolution: "scheduler@npm:0.27.0"
+  checksum: 10c0/4f03048cb05a3c8fddc45813052251eca00688f413a3cee236d984a161da28db28ba71bd11e7a3dd02f7af84ab28d39fb311431d3b3772fed557945beb00c452
+  languageName: node
+  linkType: hard
+
 "section-matter@npm:^1.0.0":
   version: 1.0.0
   resolution: "section-matter@npm:1.0.0"