Worked on modernizing the linting system for the Azure/azure-sdk-tools repository by migrating ESLint to version 10 and adopting a flat configuration format. The approach involved removing deprecated plugins, updating lint scripts, and replacing incompatible plugins with built-in rules, while integrating @eslint/js and typescript-eslint for enhanced flat config support. Addressed compatibility issues between Jest and TypeScript, improved CI reliability by regenerating package-lock files, and updated tsconfig settings to avoid type conflicts. Using JavaScript, TypeScript, and Node.js, these changes streamlined the linting process, improved code quality, and made the tooling more maintainable and accessible for future contributors.