fix(Breadcrumb): fix rehydration disturbance

packages/dnb-eufemia/src/components/breadcrumb/Breadcrumb.tsx

@@ -11,7 +11,6 @@ import Section, {
 import Button from '../button/Button'
 
 // Shared
-import { useMediaQuery } from '../../shared'
 import Context from '../../shared/Context'
 import type { SpacingProps } from '../../shared/types'
 import type { SkeletonShow } from '../skeleton/Skeleton'
@@ -174,15 +173,11 @@ const Breadcrumb = (localProps: BreadcrumbProps & SpacingProps) => {
   const spacingClasses = createSpacingClasses(props)
 
   const [isCollapsed, setCollapse] = useState(overrideIsCollapsed)
-  const isSmallScreen = useMediaQuery({
-    matchOnSSR: true,
-    when: { max: 'medium' },
-  })
 
   let currentVariant = variant
   if (!variant) {
     if (items || data) {
-      currentVariant = isSmallScreen ? 'collapse' : 'multiple'
+      currentVariant = 'multiple'
     } else {
       currentVariant = 'single'
     }
@@ -201,6 +196,7 @@ const Breadcrumb = (localProps: BreadcrumbProps & SpacingProps) => {
       aria-label={convertJsxToString(navText)}
       className={classnames(
         'dnb-breadcrumb',
+        `dnb-breadcrumb--variant-${currentVariant}`,
         skeletonClasses,
         spacingClasses,
         className
@@ -212,23 +208,7 @@ const Breadcrumb = (localProps: BreadcrumbProps & SpacingProps) => {
         style_type={styleType || 'transparent'}
         spacing={innerSpacing}
       >
-        {currentVariant === 'collapse' && (
-          <Button
-            text={backToText}
-            variant="tertiary"
-            icon="chevron_left"
-            icon_position="left"
-            onClick={
-              onClick ||
-              (() => {
-                setCollapse(!isCollapsed)
-              })
-            }
-            aria-expanded={!isCollapsed}
-          />
-        )}
-
-        {currentVariant === 'single' && (
+        {currentVariant === 'single' ? (
           <Button
             text={goBackText}
             variant="tertiary"
@@ -237,39 +217,52 @@ const Breadcrumb = (localProps: BreadcrumbProps & SpacingProps) => {
             onClick={onClick}
             href={href}
           />
-        )}
-
-        {currentVariant === 'multiple' && (
-          <BreadcrumbMultiple
-            data={data}
-            items={items}
-            isCollapsed={false}
-            noAnimation={noAnimation}
-          />
+        ) : (
+          <>
+            <Button
+              className="dnb-breadcrumb__toggle"
+              text={backToText}
+              variant="tertiary"
+              icon="chevron_left"
+              icon_position="left"
+              onClick={
+                onClick ||
+                (() => {
+                  setCollapse(!isCollapsed)
+                })
+              }
+              aria-expanded={!isCollapsed}
+            />
+
+            {currentVariant !== 'collapse' && (
+              <BreadcrumbMultiple
+                data={data}
+                items={items}
+                isCollapsed={false}
+                noAnimation={noAnimation}
+              />
+            )}
+          </>
         )}
       </Section>
 
-      {currentVariant === 'collapse' && (
-        <Section
-          variant={collapsedStyleType}
-          className="dnb-breadcrumb__collapse"
-        >
-          <BreadcrumbMultiple
-            data={data}
-            items={items}
-            isCollapsed={isCollapsed}
-            noAnimation={noAnimation}
-          />
-        </Section>
-      )}
+      <Section
+        variant={collapsedStyleType}
+        className="dnb-breadcrumb__collapse"
+      >
+        <BreadcrumbMultiple
+          data={data}
+          items={items}
+          isCollapsed={isCollapsed}
+          noAnimation={noAnimation}
+        />
+      </Section>
     </nav>
   )
 }
 
 Breadcrumb.Item = BreadcrumbItem
-
-export { BreadcrumbItem }
-
 Breadcrumb._supportsSpacingProps = true
 
+export { BreadcrumbItem }
 export default Breadcrumb

packages/dnb-eufemia/src/components/breadcrumb/BreadcrumbItem.tsx

@@ -20,6 +20,10 @@ import {
   filterProps,
 } from '../../shared/component-helper'
 
+// SSR warning fix: https://gist.github.com/gaearon/e7d97cdf38a2907924ea12e4ebdf3c85
+const useLayoutEffect =
+  typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect
+
 export type BreadcrumbItemProps = {
   /**
    * Text displaying the title of the item's corresponding page
@@ -116,11 +120,19 @@ const BreadcrumbItem = (localProps: BreadcrumbItemProps) => {
     when: { max: 'medium' },
   })
 
-  let currentIcon =
-    icon || (variant === 'home' && homeIcon) || 'chevron_left'
-  if (theme?.name === 'sbanken') {
-    currentIcon = icon || determineSbankenIcon(variant, isSmallScreen)
-  }
+  const [currentIcon, setCurrentIcon] = React.useState(null)
+
+  useLayoutEffect(() => {
+    if (!icon && theme?.name === 'sbanken') {
+      const currentIcon = determineSbankenIcon(variant, isSmallScreen)
+      setCurrentIcon(currentIcon)
+    } else {
+      setCurrentIcon(
+        icon || (variant === 'home' && homeIcon) || 'chevron_left'
+      )
+    }
+  }, [icon, isSmallScreen, theme?.name, variant])
+
   const currentText = text || (variant === 'home' && homeText) || ''
   const isInteractive =
     (href || onClick || props.to) && variant !== 'current'
@@ -149,10 +161,12 @@ const BreadcrumbItem = (localProps: BreadcrumbItemProps) => {
           // TODO: Consider deprecating passing down props to span in v11
           {...filterProps(props, (key) => !key.includes('-'))}
         >
-          <IconPrimary
-            icon={currentIcon}
-            className="dnb-breadcrumb__item__span__icon"
-          />
+          {currentIcon && (
+            <IconPrimary
+              icon={currentIcon}
+              className="dnb-breadcrumb__item__span__icon"
+            />
+          )}
           <P space="0">{currentText}</P>
         </span>
       )}

packages/dnb-eufemia/src/components/breadcrumb/BreadcrumbMultiple.tsx

@@ -22,7 +22,7 @@ export const BreadcrumbMultiple = ({
     <HeightAnimation
       open={!isCollapsed}
       animate={!noAnimation}
-      className="dnb-breadcrumb__animation"
+      className="dnb-breadcrumb__multiple"
     >
       <Section
         className="dnb-breadcrumb__list"

packages/dnb-eufemia/src/components/breadcrumb/__tests__/Breadcrumb.test.tsx

@@ -2,14 +2,11 @@ import React from 'react'
 import { fireEvent, render, screen } from '@testing-library/react'
 import Breadcrumb, { BreadcrumbItem, BreadcrumbProps } from '../Breadcrumb'
 import { Provider } from '../../../shared'
-import MatchMediaMock from 'jest-matchmedia-mock'
 import IconPrimary from '../../icon-primary/IconPrimary'
 import { loadScss, axeComponent } from '../../../core/jest/jestSetup'
 import { BreadcrumbItemProps } from '../BreadcrumbItem'
 import { AnchorAllProps } from '../../Anchor'
 
-const matchMedia = new MatchMediaMock()
-
 describe('Breadcrumb', () => {
   it('renders without properties', () => {
     const props: BreadcrumbProps = {}
@@ -60,9 +57,7 @@ describe('Breadcrumb', () => {
     )
 
     expect(screen.queryByTestId(dataTestId)).toBeInTheDocument()
-    expect(screen.queryByTestId(dataTestId).className).toMatch(
-      'dnb-button'
-    )
+    expect(screen.queryByTestId(dataTestId)).toHaveClass('dnb-button')
   })
 
   // TODO – can be removed in v11 when we deprecate passing down props to dnb-breadcrumb__item__span
@@ -81,7 +76,7 @@ describe('Breadcrumb', () => {
     )
 
     expect(screen.queryByTestId(dataTestId)).toBeInTheDocument()
-    expect(screen.queryByTestId(dataTestId).className).toMatch(
+    expect(screen.queryByTestId(dataTestId)).toHaveClass(
       'dnb-breadcrumb__item__span'
     )
     expect(
@@ -178,13 +173,13 @@ describe('Breadcrumb', () => {
     )
 
     expect(
-      document.querySelector('.dnb-breadcrumb__animation')
+      document.querySelector('.dnb-breadcrumb__multiple')
     ).not.toBeInTheDocument()
 
     fireEvent.click(screen.getByRole('button'))
 
     expect(
-      document.querySelector('.dnb-breadcrumb__animation')
+      document.querySelector('.dnb-breadcrumb__multiple')
     ).not.toBeInTheDocument()
   })
 
@@ -224,8 +219,6 @@ describe('Breadcrumb', () => {
   })
 
   it('variant collapse opens the collapsed content on click', () => {
-    matchMedia.useMediaQuery('(max-width: 60em)')
-
     render(
       <Breadcrumb
         data={[
@@ -239,20 +232,18 @@ describe('Breadcrumb', () => {
     fireEvent.click(screen.getByRole('button'))
 
     expect(
-      document.querySelector('.dnb-breadcrumb__animation')
+      document.querySelector('.dnb-breadcrumb__multiple')
     ).toBeDefined()
   })
 
   it('inherits skeleton prop from provider', () => {
-    const skeletonClassName = 'dnb-skeleton'
-
     render(
       <Provider skeleton>
         <Breadcrumb data={[{ onClick: jest.fn(), text: 'Page 1' }]} />
       </Provider>
     )
 
-    expect(screen.getByRole('button').className).toMatch(skeletonClassName)
+    expect(screen.getAllByRole('button')[0]).toHaveClass('dnb-skeleton')
   })
 
   it('should support spacing props', () => {
@@ -275,6 +266,7 @@ describe('Breadcrumb', () => {
     expect(attributes).toEqual(['aria-label', 'class'])
     expect(Array.from(element.classList)).toEqual([
       'dnb-breadcrumb',
+      'dnb-breadcrumb--variant-multiple',
       'dnb-space__top--large',
     ])
   })
@@ -365,29 +357,21 @@ describe('Breadcrumb', () => {
     })
 
     it('renders a skeleton if skeleton is true', () => {
-      const skeletonClassName = 'dnb-skeleton'
-
       render(
         <BreadcrumbItem skeleton onClick={jest.fn()} text="skeleton" />
       )
 
-      expect(screen.getByRole('button').className).toMatch(
-        skeletonClassName
-      )
+      expect(screen.getByRole('button')).toHaveClass('dnb-skeleton')
     })
 
     it('inherits skeleton prop from provider', () => {
-      const skeletonClassName = 'dnb-skeleton'
-
       render(
         <Provider skeleton>
           <BreadcrumbItem onClick={jest.fn()} text="skeleton" />
         </Provider>
       )
 
-      expect(screen.getByRole('button').className).toMatch(
-        skeletonClassName
-      )
+      expect(screen.getByRole('button')).toHaveClass('dnb-skeleton')
     })
 
     it('forwards rest props like data-testid, etc, to the breadcrumb item button when interactive', () => {
@@ -398,9 +382,7 @@ describe('Breadcrumb', () => {
 
       expect(screen.queryByTestId(dataTestId)).toBeInTheDocument()
 
-      expect(screen.queryByTestId(dataTestId).className).toMatch(
-        'dnb-button'
-      )
+      expect(screen.queryByTestId(dataTestId)).toHaveClass('dnb-button')
     })
 
     // TODO – can be removed in v11 when we deprecate passing down props to dnb-breadcrumb__item__span
@@ -415,7 +397,7 @@ describe('Breadcrumb', () => {
       )
 
       expect(screen.queryByTestId(dataTestId)).toBeInTheDocument()
-      expect(screen.queryByTestId(dataTestId).className).toMatch(
+      expect(screen.queryByTestId(dataTestId)).toHaveClass(
         'dnb-breadcrumb__item__span'
       )
       expect(

packages/dnb-eufemia/src/components/breadcrumb/__tests__/__snapshots__/Breadcrumb.test.tsx.snap

@@ -757,18 +757,28 @@ button.dnb-button::-moz-focus-inner {
 .dnb-breadcrumb__item__span__icon {
   margin-right: 0.5rem;
 }
-.dnb-breadcrumb__animation {
+.dnb-breadcrumb__multiple {
   display: flex;
   flex-direction: column;
   transition: height 400ms var(--easing-default);
 }
-.dnb-breadcrumb__animation .dnb-breadcrumb__item {
+.dnb-breadcrumb__multiple .dnb-breadcrumb__item {
   transition: transform 400ms var(--easing-default) calc(var(--delay) * 50ms);
   transform: translateX(-1rem);
 }
-.dnb-breadcrumb__animation.dnb-height-animation--parallax .dnb-breadcrumb__item {
+.dnb-breadcrumb__multiple.dnb-height-animation--parallax .dnb-breadcrumb__item {
   transform: translateX(0);
 }
+@media screen and (max-width: 60em) {
+  .dnb-breadcrumb__bar .dnb-breadcrumb__multiple {
+    display: none;
+  }
+}
+@media screen and (min-width: 60em) {
+  .dnb-breadcrumb--variant-multiple .dnb-breadcrumb__toggle {
+    display: none;
+  }
+}
 .dnb-breadcrumb__collapse {
   display: flex;
   flex-direction: column;