mozilla/gecko-dev
Jun 2025 – Jul 2025
2 Months active
Languages Used
HTMLJavaScript
Technical Skills
CSS AnimationsFront-end DevelopmentJavaScriptJavaScript TestingScroll AnimationsTesting
David Awogbemila
PROFILE
David Awogbemila
Over a two-month period, contributed to mozilla/gecko-dev by developing and refining the AnimationTrigger feature, which enables scroll- and view-progress-based CSS animation control. Focused on robust test-driven development, the work included expanding Web Platform Test coverage, normalizing CSS pixel spaces for consistent scroll offset evaluation, and improving animation trigger reliability in dynamic DOM scenarios. Addressed issues such as detaching canceled animations from triggers and validating CSS property parsing for timeline-trigger attributes. Leveraged JavaScript, HTML, and CSS Animations to enhance cross-browser compatibility and reduce regression risk, demonstrating depth in front-end development, automated testing, and web animation standards implementation.
Overall Statistics
Feature vs Bugs
60%Features
Repository Contributions
8Total
Bugs
2
Commits
8
Features
3
Lines of code
1,619
Activity Months2
Your Network
825 peopleSame Organization
@chromium.org325
Aaron KrajeskiMember
Abhijith NairMember
Abhishek Pandit-SubediMember
Abigail KatcoffMember
Adrian TaylorMember
Adam LangleyMember
Palak AgarwalMember
Andrew GrieveMember
Andreas HaasMember
Shared Repositories
500
Work History
July 2025
5 Commits • 2 Features
Jul 1, 2025July 2025 mozilla/gecko-dev: Strengthened animation-trigger reliability through focused test coverage and CSS parsing validations. Key deliverables include robustness tests for animation-trigger behavior in dynamic DOM environments (scenarios where the animation target or trigger subject is removed and reattached, ensuring listeners continue to function; triggers pause when subject is removed and resume when reattached) and comprehensive timeline-trigger CSS property parsing tests (timeline-trigger-name, timeline-trigger-behavior, timeline-trigger-exit-range-start/end, timeline-trigger-range-start/end, and timeline-trigger-timeline). These efforts address correctness and stability in dynamic UI animations, reducing regression risk in core rendering paths. Related commits include tests and bug work such as Bug 1974769 (keep triggers alive) and the timeline parsing tests via wpt PRs (1975773-1975776). Technologies demonstrated: Web Platform Tests (WPT), CSS property parsing, animation timeline handling, and test automation in a dynamic DOM context.
5 Commits • 2 Features
Jul 1, 2025July 2025 mozilla/gecko-dev: Strengthened animation-trigger reliability through focused test coverage and CSS parsing validations. Key deliverables include robustness tests for animation-trigger behavior in dynamic DOM environments (scenarios where the animation target or trigger subject is removed and reattached, ensuring listeners continue to function; triggers pause when subject is removed and resume when reattached) and comprehensive timeline-trigger CSS property parsing tests (timeline-trigger-name, timeline-trigger-behavior, timeline-trigger-exit-range-start/end, timeline-trigger-range-start/end, and timeline-trigger-timeline). These efforts address correctness and stability in dynamic UI animations, reducing regression risk in core rendering paths. Related commits include tests and bug work such as Bug 1974769 (keep triggers alive) and the timeline parsing tests via wpt PRs (1975773-1975776). Technologies demonstrated: Web Platform Tests (WPT), CSS property parsing, animation timeline handling, and test automation in a dynamic DOM context.
July 2025
June 2025
3 Commits • 1 Features
Jun 1, 2025June 2025 delivered the AnimationTrigger feature in mozilla/gecko-dev, enabling scroll- and view-progress-based CSS animation control, with expanded test coverage and updates to existing tests. Fixed two critical issues: normalization of CSS pixel spaces to ensure consistent scroll offset evaluation, and robustness improvements by detaching canceled animations from triggers. These changes boost reliability of animation-trigger behavior, reduce test flakiness in web platform tests, and lay groundwork for broader adoption of scroll-driven animations. Demonstrated skills in test-driven development, cross-browser compatibility, and git-based collaboration, as evidenced by the commits a090e753b6f6de7bd4e611eaa1b166aeb63162f7, 77c75f3f279910777085d8b13a6a462d2fec33be, and 9dfe4bf88e5d35f443f4ec8065e27cf8f079d9aa.
June 2025
3 Commits • 1 Features
Jun 1, 2025June 2025 delivered the AnimationTrigger feature in mozilla/gecko-dev, enabling scroll- and view-progress-based CSS animation control, with expanded test coverage and updates to existing tests. Fixed two critical issues: normalization of CSS pixel spaces to ensure consistent scroll offset evaluation, and robustness improvements by detaching canceled animations from triggers. These changes boost reliability of animation-trigger behavior, reduce test flakiness in web platform tests, and lay groundwork for broader adoption of scroll-driven animations. Demonstrated skills in test-driven development, cross-browser compatibility, and git-based collaboration, as evidenced by the commits a090e753b6f6de7bd4e611eaa1b166aeb63162f7, 77c75f3f279910777085d8b13a6a462d2fec33be, and 9dfe4bf88e5d35f443f4ec8065e27cf8f079d9aa.
Activity
Loading activity data...
Quality Metrics
Correctness98.8%
Maintainability97.6%
Architecture97.6%
Performance97.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
HTMLJavaScript
Technical Skills
CSS AnimationsCSS ParsingDOM ManipulationFront-end DevelopmentJavaScriptJavaScript TestingScroll AnimationsTestingWeb Animations APIWeb Platform Testing
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline