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fix(css): return undefined if there is no className #11602

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fix(css): return undefined if there is no className #11602

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4 changes: 1 addition & 3 deletions ...react-core/src/components/Compass/__tests__/__snapshots__/CompassMainHeader.test.tsx.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -18,9 +18,7 @@ exports[`Matches the snapshot with both title and toolbar 1`] = `
Title
</div>
</div>
<div
class=""
>
<div>
<div>
Toolbar
</div>
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4 changes: 1 addition & 3 deletions packages/react-core/src/components/List/__tests__/__snapshots__/ListItem.test.tsx.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -23,9 +23,7 @@ exports[`Matches snapshot with icon 1`] = `

exports[`Matches snapshot without icon 1`] = `
<DocumentFragment>
<li
class=""
>
<li>
<span>
List item content
</span>
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1 change: 0 additions & 1 deletion packages/react-core/src/components/Nav/__tests__/__snapshots__/Nav.test.tsx.snap
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Expand Up @@ -1017,7 +1017,6 @@ exports[`Nav Nav List with flyout 1`] = `
</li>
</ul>
<div
class=""
data-popper-escaped="true"
data-popper-placement="right-start"
data-popper-reference-hidden="true"
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10 changes: 2 additions & 8 deletions ...s/react-core/src/components/SearchInput/__tests__/__snapshots__/SearchInput.test.tsx.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,7 @@

exports[`SearchInput advanced search 1`] = `
<DocumentFragment>
<div
class=""
>
<div>
<div
class="pf-v6-c-input-group"
>
Expand Down Expand Up @@ -145,7 +143,6 @@ exports[`SearchInput advanced search 1`] = `
exports[`SearchInput advanced search with custom attributes 1`] = `
<DocumentFragment>
<div
class=""
data-testid="test-id"
>
<div
Expand Down Expand Up @@ -282,7 +279,6 @@ exports[`SearchInput advanced search with custom attributes 1`] = `
</div>
</div>
<div
class=""
data-popper-escaped="true"
data-popper-placement="bottom-start"
data-popper-reference-hidden="true"
Expand Down Expand Up @@ -478,9 +474,7 @@ exports[`SearchInput advanced search with custom attributes 1`] = `

exports[`SearchInput renders search input in strict mode 1`] = `
<DocumentFragment>
<div
class=""
>
<div>
<div
class="pf-v6-c-input-group"
>
Expand Down
4 changes: 1 addition & 3 deletions ...e/src/components/ToggleGroup/__tests__/__snapshots__/ToggleGroupItemElement.test.tsx.snap
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Expand Up @@ -2,9 +2,7 @@

exports[`empty 1`] = `
<DocumentFragment>
<span
class=""
/>
<span />
</DocumentFragment>
`;

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12 changes: 3 additions & 9 deletions packages/react-core/src/layouts/Flex/__tests__/__snapshots__/Flex.test.tsx.snap
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Expand Up @@ -8,9 +8,7 @@ exports[`Flex Nested flex 1`] = `
<div
class="pf-v6-l-flex"
>
<div
class=""
>
<div>
Test
</div>
</div>
Expand All @@ -23,9 +21,7 @@ exports[`Flex Simple flex with single item 1`] = `
<div
class="pf-v6-l-flex"
>
<div
class=""
>
<div>
Test
</div>
</div>
Expand All @@ -37,9 +33,7 @@ exports[`Flex alternative component 1`] = `
<ul
class="pf-v6-l-flex"
>
<li
class=""
>
<li>
Test
</li>
</ul>
Expand Down
12 changes: 3 additions & 9 deletions ...es/react-drag-drop/src/components/DragDrop/__tests__/__snapshots__/DragDrop.test.tsx.snap
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Expand Up @@ -6,9 +6,7 @@ exports[`renders some divs 1`] = `
class="pf-c-droppable pf-m-dragging"
>
<div>
<div
class=""
>
<div>
<button
aria-describedby="DndDescribedBy-0"
aria-disabled="false"
Expand Down Expand Up @@ -46,9 +44,7 @@ exports[`renders some divs 1`] = `
</button>
one
</div>
<div
class=""
>
<div>
<button
aria-describedby="DndDescribedBy-0"
aria-disabled="false"
Expand Down Expand Up @@ -86,9 +82,7 @@ exports[`renders some divs 1`] = `
</button>
two
</div>
<div
class=""
>
<div>
<button
aria-describedby="DndDescribedBy-0"
aria-disabled="false"
Expand Down
6 changes: 3 additions & 3 deletions packages/react-styles/src/index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,8 @@
*
* @param {any} args list of objects, string, or arrays to reduce
*/
export function css(...args: any): string {
// Adapted from https://github.com/JedWatson/classnames/blob/master/index.js
export function css(...args: any): string | undefined {
// Adapted from https://github.com/JedWatson/classnames/blob/main/index.js
const classes = [] as string[];
const hasOwn = {}.hasOwnProperty;

Expand All @@ -26,5 +26,5 @@ export function css(...args: any): string {
}
});

return classes.join(' ');
return classes.join(' ') || undefined;
}
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