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
Awogbemila developed the AnimationTrigger feature in mozilla/gecko-dev, enabling scroll- and view-progress-based CSS animation control with robust test coverage. Their work focused on ensuring reliable animation behavior by normalizing CSS pixel spaces and improving the detachment logic for canceled animations, addressing issues in dynamic DOM environments. Using JavaScript and CSS Animations, Awogbemila implemented comprehensive tests for timeline-trigger CSS property parsing and validated animation triggers under DOM changes, such as element removal and reattachment. This approach reduced regression risk in core rendering paths and improved cross-browser reliability, demonstrating depth in front-end development, web platform testing, and test-driven engineering practices.
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
812 people
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
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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