LifeSG/react-design-system
Jun 2025 – Apr 2026
3 Months active
Languages Used
CSSJavaScriptTypeScriptMarkdown
Technical Skills
AccessibilityComponent DevelopmentComponent RefactoringEvent HandlingFront End DevelopmentFront-end Development
lionel-sim
PROFILE
Lionel-sim
Contributed to the LifeSG/react-design-system repository by delivering accessibility and usability improvements across calendar, date input, toggle, and time range picker components. Focused on enhancing keyboard navigation, ARIA labeling, and focus management to support screen readers and improve compliance, using React, TypeScript, and CSS. Implemented new props for scroll position control in the Time Range Picker, refactored components for deterministic behavior, and updated documentation and tests to ensure maintainability. Enhanced Storybook demonstrations and accessibility guidelines for the Toggle component, reducing developer friction and supporting onboarding. All work emphasized robust testing, clear documentation, and alignment with design-system accessibility standards.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
19Total
Bugs
0
Commits
19
Features
5
Lines of code
1,827
Activity Months3
Your Network
71 peopleShared Repositories
71
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Ashley TeoMember
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benjamin leongMember
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Choo Chen WeiMember
Ha Dang NguyenMember
DarrelMember
Work History
April 2026
4 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for LifeSG/react-design-system: Focused on delivering and documenting Time Range Picker scroll-position enhancements, with initial start/end scroll time props, refactor to consume new props, plus documentation and test improvements.
4 Commits • 1 Features
Apr 1, 2026April 2026 monthly summary for LifeSG/react-design-system: Focused on delivering and documenting Time Range Picker scroll-position enhancements, with initial start/end scroll time props, refactor to consume new props, plus documentation and test improvements.
April 2026
July 2025
4 Commits • 3 Features
Jul 1, 2025July 2025 summary for LifeSG/react-design-system focused on making the Toggle component accessible, well-documented, and easier to use within the design system. Delivered ARIA attribute enhancements, improved focus states, and robust aria-describedby handling; published comprehensive accessibility guidelines for the Toggle in Storybook with TypeScript examples; and refreshed the Storybook demonstrations to clearly showcase state management for radio groups and improved error messaging. These changes elevate accessibility compliance, reduce developer friction, and improve end-user experience across components. Technologies demonstrated include React, ARIA patterns, TypeScript, and Storybook documentation.
July 2025
4 Commits • 3 Features
Jul 1, 2025July 2025 summary for LifeSG/react-design-system focused on making the Toggle component accessible, well-documented, and easier to use within the design system. Delivered ARIA attribute enhancements, improved focus states, and robust aria-describedby handling; published comprehensive accessibility guidelines for the Toggle in Storybook with TypeScript examples; and refreshed the Storybook demonstrations to clearly showcase state management for radio groups and improved error messaging. These changes elevate accessibility compliance, reduce developer friction, and improve end-user experience across components. Technologies demonstrated include React, ARIA patterns, TypeScript, and Storybook documentation.
June 2025
11 Commits • 1 Features
Jun 1, 2025June 2025 delivered an accessibility and keyboard navigation overhaul for the calendar and date-input suite in LifeSG/react-design-system. Key updates include focus management for day cells, cross-view arrow-key navigation, and improved ARIA labeling across calendar components, date inputs, and date ranges. Date inputs now expose day-name labels and use explicit roles/aria-labelledby for screen readers. Fixed critical blur handling issues in date/date-range inputs, updated tab order, and aligned tests. Implemented changes across 11 commits (BOOKINGSG-7539 and related), with focused updates to focus, blur, and labeling. Impact: enhanced keyboard usability, screen-reader compatibility, and accessibility compliance, reducing support friction and broadening the user base. Technologies/skills: React, ARIA, keyboard navigation, focus management, test-driven updates, code reviews, and design-system collaboration.
11 Commits • 1 Features
Jun 1, 2025June 2025 delivered an accessibility and keyboard navigation overhaul for the calendar and date-input suite in LifeSG/react-design-system. Key updates include focus management for day cells, cross-view arrow-key navigation, and improved ARIA labeling across calendar components, date inputs, and date ranges. Date inputs now expose day-name labels and use explicit roles/aria-labelledby for screen readers. Fixed critical blur handling issues in date/date-range inputs, updated tab order, and aligned tests. Implemented changes across 11 commits (BOOKINGSG-7539 and related), with focused updates to focus, blur, and labeling. Impact: enhanced keyboard usability, screen-reader compatibility, and accessibility compliance, reducing support friction and broadening the user base. Technologies/skills: React, ARIA, keyboard navigation, focus management, test-driven updates, code reviews, and design-system collaboration.
June 2025
Activity
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Quality Metrics
Correctness92.6%
Maintainability91.0%
Architecture86.8%
Performance87.4%
AI Usage22.0%
Skills & Technologies
Programming Languages
CSSJavaScriptMarkdownTypeScript
Technical Skills
AccessibilityComponent DevelopmentComponent RefactoringEvent HandlingFront End DevelopmentFront-end DevelopmentFrontend DevelopmentJavaScriptReactStorybookStyled ComponentsTestingTypeScriptUI DevelopmentUI/UX
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline