stryker-mutator/stryker-js
Apr 2025 – Apr 2025
1 Month active
Languages Used
JavaScriptTypeScript
Technical Skills
Code instrumentationFull stack developmentJavaScriptTestingTypeScript
Bartosz Leoniak
PROFILE
Bartosz Leoniak
Worked on the stryker-mutator/stryker-js repository to enhance mutation testing accuracy for modern JavaScript projects. Focused on improving the HTML parser’s handling of ES modules by implementing a targeted fix that ensures script tags with type='module' are correctly recognized and instrumented. This adjustment addressed a gap in code instrumentation, reducing false negatives in mutation reports and increasing reliability for projects using contemporary JavaScript workflows. Collaborated closely with HTML parser and instrumenter components to deliver a robust patch with minimal regression risk. Utilized JavaScript, TypeScript, and testing skills to improve coverage fidelity without introducing unnecessary complexity or instability.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
1Total
Bugs
1
Commits
1
Features
0
Lines of code
868
Activity Months1
Work History
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary: Focused on improving HTML parsing and instrumentation fidelity for ES modules in stryker-js. Implemented a targeted fix to recognize script tags with type='module' so modern JavaScript modules are parsed and instrumented correctly, enhancing accuracy of mutation testing results for module-based projects. This change reduces false negatives and increases confidence in coverage reports across contemporary codebases. Collaboration with the HTML parser and instrumenter components ensured a robust patch with minimal regression risk.
1 Commits
Apr 1, 2025April 2025 monthly summary: Focused on improving HTML parsing and instrumentation fidelity for ES modules in stryker-js. Implemented a targeted fix to recognize script tags with type='module' so modern JavaScript modules are parsed and instrumented correctly, enhancing accuracy of mutation testing results for module-based projects. This change reduces false negatives and increases confidence in coverage reports across contemporary codebases. Collaboration with the HTML parser and instrumenter components ensured a robust patch with minimal regression risk.
April 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability100.0%
Architecture100.0%
Performance100.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JavaScriptTypeScript
Technical Skills
Code instrumentationFull stack developmentJavaScriptTestingTypeScript
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