Update react monorepo to v19 (major)

package.json

@@ -71,7 +71,7 @@
     "@tsconfig/vite-react": "^3.0.0",
     "@types/eslint": "^9.0.0",
     "@types/node": "^22.0.0",
-    "@types/react": "^18.2.21",
+    "@types/react": "^19.0.0",
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "@vector-im/compound-design-tokens": "^2.0.0",
@@ -86,8 +86,8 @@
     "eslint-plugin-storybook": "^0.11.0",
     "jsdom": "^25.0.0",
     "prettier": "3.4.2",
-    "react": "^18.2.0",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "resize-observer-polyfill": "^1.5.1",
     "rimraf": "^6.0.0",
     "serve": "^14.2.1",
@@ -111,15 +111,14 @@
     "@radix-ui/react-separator": "^1.1.0",
     "@radix-ui/react-slot": "^1.1.0",
     "classnames": "^2.5.1",
-    "ts-xor": "^1.3.0",
     "vaul": "^1.0.0"
   },
   "peerDependencies": {
     "@fontsource/inconsolata": "^5",
     "@fontsource/inter": "^5",
     "@types/react": "*",
     "@vector-im/compound-design-tokens": ">=1.6.1 <3.0.0",
-    "react": "^18"
+    "react": "^18 || ^19.0.0"
   },
   "peerDependenciesMeta": {
     "@types/react": {

src/components/Avatar/Avatar.tsx

@@ -15,20 +15,16 @@ limitations under the License.
 */
 
 import classnames from "classnames";
-import React, { forwardRef } from "react";
+import React, { ComponentProps, forwardRef } from "react";
 import { getInitialLetter } from "../../utils/string";
-import { SuspenseImg } from "../../utils/SuspenseImg";
 import styles from "./Avatar.module.css";
 import { useIdColorHash } from "./useIdColorHash";
 
-type AvatarProps = (
-  | JSX.IntrinsicElements["button"]
-  | JSX.IntrinsicElements["span"]
-) & {
+type AvatarProps = (ComponentProps<"button"> | ComponentProps<"span">) & {
   /**
    * The avatar image URL, if any.
    */
-  src?: React.ComponentProps<typeof SuspenseImg>["src"];
+  src?: React.ComponentProps<"img">["src"];
   /**
    * The Matrix ID, Room ID, or Alias to generate the color when no image source
    * is provided. Also used as a fallback when name is empty.
@@ -62,7 +58,7 @@ type AvatarProps = (
   /**
    * Callback when the image has failed to load.
    */
-  onError?: React.ComponentProps<typeof SuspenseImg>["onError"];
+  onError?: React.ComponentProps<"img">["onError"];
 };
 
 /**

src/components/Button/IconButton/IconButton.stories.tsx

@@ -100,7 +100,7 @@ export const WithSubtleBackground: Story = {
 
 export const WithLabel: Story = {
   args: {
-    label: "label",
+    tooltip: "label",
   },
 };
 

src/components/Button/IconButton/IconButton.tsx

@@ -18,8 +18,7 @@ import React, { PropsWithChildren, forwardRef } from "react";
 import classnames from "classnames";
 
 import styles from "./IconButton.module.css";
-import { UnstyledButton } from "../UnstyledButton";
-import { UnstyledButtonPropsFor } from "../UnstyledButton";
+import { UnstyledButton, UnstyledButtonPropsFor } from "../UnstyledButton";
 import { IndicatorIcon } from "../../Icon/IndicatorIcon/IndicatorIcon";
 import { Tooltip } from "../../Tooltip/Tooltip";
 
@@ -53,7 +52,6 @@ type IconButtonProps = UnstyledButtonPropsFor<"button"> & {
    */
   tooltip?: string;
   subtleBackground?: boolean;
-  label?: string;
 };
 
 /**

src/components/Dropdown/Dropdown.tsx

@@ -268,10 +268,10 @@ const DropdownItem = memo(function DropdownItem({
 function useOpen(): [
   boolean,
   Dispatch<SetStateAction<boolean>>,
-  RefObject<HTMLDivElement>,
+  RefObject<HTMLDivElement | null>,
 ] {
   const [open, setOpen] = useState(false);
-  const ref = useRef<HTMLDivElement>(null);
+  const ref = useRef<HTMLDivElement | null>(null);
 
   // If the user clicks outside the dropdown, close it
   useEffect(() => {

src/components/Form/Controls/EditInPlace/EditInPlace.tsx

@@ -201,7 +201,9 @@ export const EditInPlace = forwardRef<HTMLInputElement, Props>(
     const shouldShowSaveButton =
       state === State.Dirty || state === State.Saving || isFocusWithin;
 
-    const hideTimer = useRef<ReturnType<typeof setTimeout>>();
+    const hideTimer = useRef<ReturnType<typeof setTimeout> | undefined>(
+      undefined,
+    );
 
     useEffect(() => {
       // Start a timer when we switch to the saved state

src/components/Menu/MenuItem.tsx

@@ -89,7 +89,7 @@ export const MenuItem = <C extends MenuItemElement = "button">({
   onClick: onClickProp,
   disabled,
   ...props
-}: Props<C>): JSX.Element => {
+}: Props<C>): React.ReactElement => {
   const Component = as ?? ("button" as ElementType);
   const context = useContext(MenuContext);
 

src/components/ReleaseAnnouncement/ReleaseAnnouncement.tsx

@@ -106,11 +106,10 @@ function ReleaseAnnouncementAnchor({
     children,
     context.getReferenceProps({
       ref,
-      ...children.props,
       // If the ReleaseAnnouncement is open, we need manually aria-describedby.
       // The RA has the dialog role and it's not adding automatically the aria-describedby.
       ...(context.open && {
-        "aria-describedby": context.getFloatingProps().id,
+        "aria-describedby": context.getFloatingProps().id as string,
       }),
     }),
   );

src/components/Tooltip/Tooltip.stories.tsx

@@ -61,14 +61,17 @@ const meta = {
   args: {
     // needed, to prevent the tooltip to be in controlled mode
     onOpenChange: undefined,
+    open: undefined,
+    description: "",
+    label: "",
     children: (
       <IconButton>
         <UserIcon />
       </IconButton>
     ),
   },
   decorators: [
-    (Story: StoryFn) => (
+    (Story) => (
       <div style={{ padding: 100 }}>
         <TooltipProvider>
           <Story />

src/components/Tooltip/Tooltip.test.tsx

@@ -18,25 +18,12 @@ import { describe, it, expect, vi } from "vitest";
 import { fireEvent, render, screen } from "@testing-library/react";
 import React, { act } from "react";
 
-import * as stories from "./Tooltip.stories";
-import { composeStories, composeStory } from "@storybook/react";
+import { IconButton } from "../Button";
 import userEvent from "@testing-library/user-event";
 import { TooltipProvider } from "./TooltipProvider";
 import { Tooltip } from "./Tooltip";
 import { UserIcon } from "@vector-im/compound-design-tokens/assets/web/icons";
 
-const {
-  Default,
-  WithStringCaption,
-  WithComponentCaption,
-  ForcedOpen,
-  ForcedClose,
-  ForcedDisabled,
-  InteractiveTrigger,
-  NonInteractiveTrigger,
-  Descriptive,
-} = composeStories(stories);
-
 /**
  * Patches an element to always match :focus-visible whenever it's in focus.
  * JSDOM doesn't seem to support this selector on its own.
@@ -52,47 +39,87 @@ function mockFocusVisible(e: Element): void {
 
 describe("Tooltip", () => {
   it("renders open by default", () => {
-    render(<ForcedOpen />);
+    render(
+      <TooltipProvider>
+        <Tooltip open={true} label="I'm always open">
+          <IconButton>
+            <UserIcon />
+          </IconButton>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     // tooltip labels button and does not use role="tooltip"
     screen.getByRole("button", { name: "I'm always open" });
     expect(screen.queryByRole("tooltip")).toBe(null);
   });
 
   it("renders closed by default", () => {
-    render(<ForcedClose />);
+    render(
+      <TooltipProvider>
+        <Tooltip open={false} description="You can't see me">
+          <span>No tooltip to see here</span>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     // no tooltip, and no label either
     expect(screen.queryByRole("tooltip")).toBe(null);
     expect(screen.queryByRole("button", { name: /.*/ })).toBe(null);
   });
 
   it("renders disabled", () => {
-    render(<ForcedDisabled />);
+    render(
+      <TooltipProvider>
+        <Tooltip disabled={true} description="You can't see me">
+          <span>No tooltip to see here</span>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     // no tooltip, and no label either
     expect(screen.queryByRole("tooltip")).toBe(null);
     expect(screen.queryByRole("button", { name: /.*/ })).toBe(null);
   });
 
   it("renders default tooltip", async () => {
-    render(<Default />);
+    render(
+      <TooltipProvider>
+        <Tooltip label="@bob:example.org">
+          <IconButton>
+            <UserIcon />
+          </IconButton>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     // tooltip labels button and does not use role="tooltip"
     screen.getByRole("button", { name: "@bob:example.org" });
     expect(screen.queryByRole("tooltip")).toBe(null);
   });
 
   it("opens tooltip on focus", async () => {
     const user = userEvent.setup();
-    render(<InteractiveTrigger />);
+    render(
+      <TooltipProvider>
+        <Tooltip isTriggerInteractive={true} description="Description">
+          <a href="https://example.org">Link</a>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     mockFocusVisible(screen.getByRole("link"));
     expect(screen.queryByRole("tooltip")).toBe(null);
     await user.tab();
     // trigger focused, tooltip shown
     expect(screen.getByRole("link")).toHaveFocus();
-    screen.getByRole("tooltip");
+    await screen.findByRole("tooltip");
   });
 
   it("opens tooltip on focus where trigger is non interactive", async () => {
     const user = userEvent.setup();
-    render(<NonInteractiveTrigger />);
+    render(
+      <TooltipProvider>
+        <Tooltip isTriggerInteractive={false} description="Description">
+          <span>Just some text</span>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     mockFocusVisible(screen.getByText("Just some text").parentElement!);
     expect(screen.queryByRole("tooltip")).toBe(null);
     await user.tab();
@@ -104,7 +131,13 @@ describe("Tooltip", () => {
   it("opens tooltip on long press", async () => {
     vi.useFakeTimers();
     try {
-      render(<InteractiveTrigger />);
+      render(
+        <TooltipProvider>
+          <Tooltip isTriggerInteractive={true} description="Description">
+            <a href="https://example.org">Link</a>
+          </Tooltip>
+        </TooltipProvider>,
+      );
       expect(screen.queryByRole("tooltip")).toBe(null);
       // Press
       fireEvent.touchStart(screen.getByRole("link"));
@@ -125,25 +158,33 @@ describe("Tooltip", () => {
 
   it("overrides default tab index for non interactive triggers", async () => {
     const user = userEvent.setup();
-    const Component = composeStory(
-      {
-        ...stories.NonInteractiveTrigger,
-        args: {
-          ...stories.NonInteractiveTrigger.args,
-          nonInteractiveTriggerTabIndex: -1,
-        },
-      },
-      stories.default,
+    render(
+      <TooltipProvider>
+        <Tooltip
+          isTriggerInteractive={false}
+          nonInteractiveTriggerTabIndex={-1}
+          description="Description"
+        >
+          <span>Just some text</span>
+        </Tooltip>
+      </TooltipProvider>,
     );
-    render(<Component />);
     await user.tab();
     // trigger cannot be focused
     expect(screen.queryByRole("tooltip")).toBe(null);
   });
 
   it("renders with string caption", async () => {
     const user = userEvent.setup();
-    render(<WithStringCaption />);
+    render(
+      <TooltipProvider>
+        <Tooltip label="I can have a caption" caption="My beautiful caption">
+          <IconButton>
+            <UserIcon />
+          </IconButton>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     await user.tab();
     // tooltip labels button and describes button with caption
     expect(
@@ -153,7 +194,22 @@ describe("Tooltip", () => {
 
   it("renders with component caption", async () => {
     const user = userEvent.setup();
-    render(<WithComponentCaption />);
+    render(
+      <TooltipProvider>
+        <Tooltip
+          label="Copy"
+          caption={
+            <>
+              <kbd>Ctrl</kbd> + <kbd>C</kbd>
+            </>
+          }
+        >
+          <IconButton>
+            <UserIcon />
+          </IconButton>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     await user.tab();
     // tooltip labels button and describes button with caption
     expect(
@@ -162,7 +218,13 @@ describe("Tooltip", () => {
   });
 
   it("renders a descriptive tooltip", async () => {
-    render(<Descriptive />);
+    render(
+      <TooltipProvider>
+        <Tooltip open={true} description="Employer Identification Number">
+          <span>EIN</span>
+        </Tooltip>
+      </TooltipProvider>,
+    );
     // tooltip shown, but does not change the button's accessible name
     screen.getByRole("tooltip", { name: "Employer Identification Number" });
     expect(screen.queryByRole("button", { name: "EIN" })).toBe(null);