Matthew Davis developed and delivered the no-param-reassign rule for the oxc-project/oxc repository, enhancing the OxLint linter by porting functionality and configuration options from ESLint. He focused on AST manipulation and linter development using JavaScript and Rust, ensuring the new rule prevents unintended modifications to function parameters and aligns with industry best practices. Matthew implemented comprehensive test coverage to maintain stability and guard against regressions, then registered the rule in the OxLint catalog for broad enforcement. His work improved code safety and maintainability, demonstrating depth in lint rule engineering and thoughtful integration into existing code quality workflows.