During December 2025, contributed to the eslint/eslint repository by developing a configurable countThis option for the max-params rule, enhancing its flexibility for TypeScript projects. This feature allows developers to specify how the rule counts the this parameter in TypeScript functions, supporting modes such as always, never, or except-void. The implementation involved updating both documentation and test suites to ensure comprehensive coverage and clear guidance for users. Leveraging JavaScript, TypeScript, and ESLint, the work improved linting configurability, reduced false positives in code reviews, and strengthened type definitions, reflecting a focused approach to maintainability and developer experience within the codebase.