dtslint is a powerful tool for linting TypeScript declaration files (.d.ts). It helps maintain high quality and consistency in your type definitions by enforcing a set of customizable rules. This ensures type safety and improves the overall maintainability of TypeScript projects. dtslint catches common errors related to type definitions, making it indispensable for package authors distributing TypeScript typings. It integrates easily into CI/CD pipelines, providing automated quality checks.