Mantine UI Library

Mantine is a fully-featured React components library with TypeScript support. It provides 100+ hooks and components with native dark mode, CSS-in-JS via CSS modules, and excellent accessibility.

v9.3 Highlights

• New Splitter component (with use-splitter hook): declarative resizable split-pane layout with horizontal/vertical orientation, collapsible panes, and keyboard navigation. Splitter.Pane must be a direct child of Splitter.
• New component props: Pagination gains layout="responsive" (CSS container queries), Text/Blockquote gain textWrap, CodeHighlight gains withLineNumbers, OverflowList gains collapseFrom ("start"/"end"), Textarea gains bottomSection (character counters), and the Combobox family (Select, MultiSelect, Autocomplete, TagsInput) supports floatingHeight="viewport".
• DateInput gains presets for quick value selection; Menu.Sub supports controlled open state.
• 9.3.1 patch fixes: notification DOM cleanup on close, Collapse keepMounted, SegmentedControl indicator radius, PinInput placeholder centering, Tree arrow-key navigation skipping hidden nodes, MaskInput with uncontrolled use-form, and stable use-id under an Activity wrapper.

v9.2.2 Highlights

• Accessibility fixes landed across selection controls and sliders: Checkbox, Radio, and Switch now wire error ids into aria-describedby, while Slider and RangeSlider support aria-valuetext.
• Overlay/input behavior was refined with submenu safe polygon support, duplicate modal-id fixes, PinInput keyboard fixes, and ScrollArea/TreeSelect interaction fixes.
• Patch fixes in 9.2.2 cover Pill overflow, Input sections under local dir overrides, Select clear buttons for falsy primitive values, Modal/Drawer/Spotlight attribute types, and safer Menu.Sub safe-area polygon option forwarding.
• @mantine/hooks use-mask now preserves undo and cursor position across paste/cut flows, and @mantine/tiptap controls avoid errors after the editor is destroyed or not initialized.
• Forms and theming were hardened: @mantine/form handlers are more stable, default validators no longer force async results unexpectedly, and mergeMantineTheme no longer mutates DEFAULT_THEME.headings.
• @mantine/schedule continues to mature with better multi-day overlap rendering and corrected positioning for intervalMinutes={60}.