stryker-mutator/stryker-js
Jan 2026 – Jan 2026
1 Month active
Languages Used
JavaScriptTypeScript
Technical Skills
JavaScriptTypeScriptVitestmutation testingtest automationtesting
Pierre Moati
PROFILE
Pierre Moati
Worked on the stryker-js repository to enhance mutation testing workflows by introducing a new --testFiles option, allowing users to selectively run specific test files using glob patterns. This feature improved the precision and speed of mutation testing cycles, reducing CI and runtime costs while increasing confidence in module-level test coverage. Addressed a critical issue with Vitest plugin integration by ensuring plugins register on the correct instance, which stabilized mutation testing behavior. The work involved JavaScript and TypeScript, with a focus on CLI option design, test automation, and documentation updates to clarify usage and troubleshooting for the new targeted testing capability.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
1,284
Activity Months1
Work History
January 2026
2 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for stryker-js focusing on targeted mutation testing improvements and stability. Key feature delivered: introduced a new --testFiles option to selectively run tests during mutation testing, supporting glob patterns and accompanied by updated documentation to clarify usage and troubleshooting. Major bug fixed: resolved a dual Vitest plugin instance registration, ensuring plugins register on the same instance used by Stryker for reliable mutation testing behavior. Overall impact: faster, more precise mutation testing cycles with reduced CI/runtime cost and increased confidence in module-level test effectiveness. Technologies/skills demonstrated: JavaScript/TypeScript, CLI option design and parsing, glob pattern support, Vitest plugin architecture integration, documentation and collaboration.
2 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for stryker-js focusing on targeted mutation testing improvements and stability. Key feature delivered: introduced a new --testFiles option to selectively run tests during mutation testing, supporting glob patterns and accompanied by updated documentation to clarify usage and troubleshooting. Major bug fixed: resolved a dual Vitest plugin instance registration, ensuring plugins register on the same instance used by Stryker for reliable mutation testing behavior. Overall impact: faster, more precise mutation testing cycles with reduced CI/runtime cost and increased confidence in module-level test effectiveness. Technologies/skills demonstrated: JavaScript/TypeScript, CLI option design and parsing, glob pattern support, Vitest plugin architecture integration, documentation and collaboration.
January 2026
Activity
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture100.0%
Performance80.0%
AI Usage40.0%
Skills & Technologies
Programming Languages
JavaScriptTypeScript
Technical Skills
JavaScriptTypeScriptVitestmutation testingtest automationtesting
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