eslint-plugin-expect-type is an ESLint plugin focused on enhancing type safety when using TypeScript with Jest or other testing frameworks. It provides rules to enforce correct usage of expect-type from the tsd package, ensuring that type assertions in tests are accurate and prevent potential runtime errors. This plugin helps developers catch type mismatches early in the development cycle, leading to more robust and reliable tests. It promotes best practices for type-level testing and improves overall code quality.