Released: Feb 28, 2026

Ignite UI for React 19.5.1 での更新項目

機能

• AI-Assisted Development - Copilot Skills
  • Four end-user skills are now shipped with the igniteui-react package under the skills/ directory providing step-by-step guidance to GitHub Copilot and other LLM agents for common tasks:
    • igniteui-wc-choose-components - Identify the right component for a given UI pattern.
    • igniteui-wc-integrate-with-framework - Set up and use components in React, Angular, Vue, or vanilla JS.
    • igniteui-wc-customize-component-theme - Apply custom styles via CSS custom properties, parts, and the theming system.
    • igniteui-wc-optimize-bundle-size - Reduce production bundle size through selective imports and lazy loading.
• Chat
  • adoptRootStyles can now be toggled on/off at runtime.
• grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid
  • Improved performance by dynamically adjusting the scroll throttle based on the data displayed in grid.
• PDF export
  • Added PDF export functionality allowing users to export grid data to PDF format.
• Popover API
  • Dropdown menus and dialogs are now using HTML Popover API to provide better positioning and accessibility.
• Localization(i18n)
  • grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid, IgrCombo, DatePicker, IgrDateRangePicker, IgrCalendar, IgrCarousel, IgrChip, IgrInput, IgrTree
    • New Intl implementation for the grid components that format and render data like dates and numbers. Updated Intl implementation for IgrCalendar, DatePicker, and IgrDateRangePicker.
    • New localization implementation for the currently supported languages for all components that have resource strings in the currently supported languages.
    • New public localization API and package named igniteui-i18n-resources containing the new resources that are used in conjunction.
• Breaking Changes
  • Themes
    • Changed global prefixes for CSS custom properties for component themes to align with other Ignite UI component libraries.
  • Chat
    • Removed the typingIndicator template renderer. Use the typing-indicator slot instead.
  • Tooltip
    • Removed the disableArrow deprecated property.
  • Library
    • Minimum Node version required is now >= 22.
  • grid, IgrTreeGrid, IgrHierarchicalGrid, IgrPivotGrid
    • Original data array mutations (like adding/removing/moving records in the original array) are no longer detected automatically. Components need an array reference change for the change to be detected.

不具合の修正

• Carousel
  • Error with context instantiation.
• Combo
  • Fixed cursor style over non input parts.
• Textarea
  • Fixed cursor style over non input parts.