LifeSG/react-design-system
Mar 2025 – Apr 2026
2 Months active
Languages Used
JavaScriptMarkdownTypeScript
Technical Skills
CSSComponent Library DevelopmentComponent StylingDesign SystemsDocumentationFront End Development
Guan Cheng
PROFILE
Guan Cheng
Worked on the LifeSG/react-design-system repository, delivering three features over two months focused on design system consistency and accessibility. Developed a centralized typography strategy using TypeScript and Styled Components, introducing FontVariant support and theme-specific font configurations to ensure consistent branding and ligature control across BookingSG and partner themes. Enhanced documentation and Storybook integration to reflect updated typography rules and reduce visual regressions. In a subsequent release, implemented accessibility-driven improvements for the TimeSlotBar component, including aria-label handling, focus management, and robust unit testing with JavaScript and React, resulting in improved usability and compliance for assistive technologies across the design system.
Overall Statistics
Feature vs Bugs
100%Features
Repository Contributions
22Total
Bugs
0
Commits
22
Features
3
Lines of code
1,620
Activity Months2
Your Network
71 peopleShared Repositories
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Work History
April 2026
7 Commits • 1 Features
Apr 1, 2026Apr 2026 monthly summary focused on delivering accessibility-driven enhancements in the LifeSG design system, with substantial usability improvements to TimeSlotBar, expanded test coverage, and solidifying that work with PR-driven polish.
7 Commits • 1 Features
Apr 1, 2026Apr 2026 monthly summary focused on delivering accessibility-driven enhancements in the LifeSG design system, with substantial usability improvements to TimeSlotBar, expanded test coverage, and solidifying that work with PR-driven polish.
April 2026
March 2025
15 Commits • 2 Features
Mar 1, 2025In March 2025, delivered two core typography initiatives for LifeSG’s design system, delivering measurable branding consistency and developer productivity gains across BookingSG and partner themes. Implemented a centralized typography strategy with FontVariant support and theme-specific font configuration, enabling consistent font handling, ligature control, and branding across all text styles. Key outcomes include cross-theme FontVariant propagation across TextStyleSpec, theming props, and styling helpers; a unified Font Set management mechanism with getFontSet, including options to disable ligatures and per-theme configurations; and clear Storybook and documentation updates to reflect v2 typography rules.
March 2025
15 Commits • 2 Features
Mar 1, 2025In March 2025, delivered two core typography initiatives for LifeSG’s design system, delivering measurable branding consistency and developer productivity gains across BookingSG and partner themes. Implemented a centralized typography strategy with FontVariant support and theme-specific font configuration, enabling consistent font handling, ligature control, and branding across all text styles. Key outcomes include cross-theme FontVariant propagation across TextStyleSpec, theming props, and styling helpers; a unified Font Set management mechanism with getFontSet, including options to disable ligatures and per-theme configurations; and clear Storybook and documentation updates to reflect v2 typography rules.
Activity
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Quality Metrics
Correctness98.2%
Maintainability96.4%
Architecture95.6%
Performance96.4%
AI Usage21.8%
Skills & Technologies
Programming Languages
JavaScriptMarkdownTypeScript
Technical Skills
CSSComponent Library DevelopmentComponent StylingDesign SystemsDocumentationFront End DevelopmentFront-end DevelopmentJavaScriptReactStorybookStyled ComponentsTheme ConfigurationTheme ManagementTypeScriptUI Development
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline