fix(eds-core-react): 🐛 Update Tooltip component to use mergeRefs (#4130)

* fix(eds-core-react): 🐛 Update Tooltip component to use mergeRefs

This fixes the warning related to accessing element.ref directly, which is no longer supported in React 19.

* Add test to cover ref issue

* chore: trigger CI rebuild after main branch migration

* test: Use explicit ID in Tooltip snapshot test for consistency

* Try to remove id to make snapshot deterministic

* Fix prettier

* resolve eslint errors in tooltip

Author: pomfrida

packages/eds-core-react/src/components/Tooltip/Tooltip.test.tsx

@@ -1,8 +1,10 @@
 /* eslint-disable no-undef */
 import { fireEvent, render, screen, act } from '@testing-library/react'
 import { axe } from 'jest-axe'
+import '@testing-library/jest-dom'
 import styled from 'styled-components'
 import { Tooltip, Button } from '../../'
+import { createRef } from 'react'
 
 const StyledTooltip = styled(Tooltip)`
   background: red;
@@ -30,6 +32,9 @@ describe('Tooltip', () => {
     const content = screen.getByText('Test')
     fireEvent.mouseEnter(content)
     const tooltip = await screen.findByRole('tooltip')
+
+    // Remove the auto-generated ID to make snapshot deterministic
+    tooltip.removeAttribute('id')
     expect(tooltip).toMatchSnapshot()
   })
   it('Should pass a11y test', async () => {
@@ -76,7 +81,7 @@ describe('Tooltip', () => {
     await act(() => new Promise((r) => setTimeout(r, openDelay)))
 
     const tooltip = await screen.findByRole('tooltip')
-    expect(tooltip).toHaveStyleRule('background', 'red')
+    expect(tooltip).toHaveStyle('background: red')
   })
   it('is visible when content is being hovered', async () => {
     render(
@@ -174,4 +179,28 @@ describe('Tooltip', () => {
 
     expect(handler).toBeCalled()
   })
+  it('should render correctly when the wrapped component has a ref', async () => {
+    const buttonRef = createRef<HTMLButtonElement>()
+    render(
+      <Tooltip title="Tooltip" enterDelay={0}>
+        <Button ref={buttonRef}>Test</Button>
+      </Tooltip>,
+    )
+
+    const button = screen.getByText('Test')
+
+    fireEvent.focus(button)
+
+    expect(await screen.findByRole('tooltip')).toBeInTheDocument()
+  })
+  it('should forward refs to the wrapped component', () => {
+    const ref = createRef()
+    render(
+      <Tooltip title="Tooltip">
+        <Button ref={ref}>Test</Button>
+      </Tooltip>,
+    )
+
+    expect(ref.current).toBeInstanceOf(HTMLButtonElement)
+  })
 })

packages/eds-core-react/src/components/Tooltip/Tooltip.tsx

@@ -8,6 +8,7 @@ import {
   useMemo,
   useEffect,
   ReactNode,
+  ReactElement,
 } from 'react'
 import { createPortal } from 'react-dom'
 import styled from 'styled-components'
@@ -136,9 +137,9 @@ export const Tooltip = forwardRef<HTMLDivElement, TooltipProps>(
       ],
       whileElementsMounted: autoUpdate,
     })
-    const anchorRef = useMemo(
-      () => mergeRefs<HTMLElement>(refs.setReference, children?.ref),
-      [refs.setReference, children?.ref],
+    const mergedAnchorRef = useMemo(
+      () => mergeRefs<HTMLElement>(refs.setReference),
+      [refs.setReference],
     )
     const tooltipRef = useMemo(
       () => mergeRefs<HTMLDivElement>(refs.setFloating, ref),
@@ -188,12 +189,17 @@ export const Tooltip = forwardRef<HTMLDivElement, TooltipProps>(
       }
     })
 
-    const updatedChildren = cloneElement(children, {
-      ...getReferenceProps({
-        ...children.props,
-        ref: anchorRef,
-      }),
-    })
+    const updatedChildren = cloneElement(
+      children as ReactElement<any>, // eslint-disable-line @typescript-eslint/no-explicit-any
+      {
+        ...getReferenceProps(children.props),
+        ref: mergeRefs(
+          // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-unsafe-member-access
+          (children as ReactElement<any>).props.ref,
+          mergedAnchorRef,
+        ),
+      },
+    )
 
     useEffect(() => {
       if (!elements.floating) return
@@ -228,14 +234,14 @@ export const Tooltip = forwardRef<HTMLDivElement, TooltipProps>(
 
     return (
       <>
+        {updatedChildren}
         {shouldOpen &&
           open &&
           !disabled &&
           createPortal(
             TooltipEl,
             portalContainer ?? rootElement ?? document.body,
           )}
-        {updatedChildren}
       </>
     )
   },

packages/eds-core-react/src/components/Tooltip/__snapshots__/Tooltip.test.tsx.snap

@@ -53,7 +53,6 @@ exports[`Tooltip Matches snapshot 1`] = `
 <div
   class="c0 eds-tooltip "
   data-floating-ui-focusable=""
-  id="«r0»"
   popover="manual"
   role="tooltip"
   style="position: absolute; top: 14px; left: 8px;"