Dmitry Usov completed a comprehensive TypeScript refactor of form components in the epam/ketcher repository, focusing on improving type safety and maintainability. He migrated core components from JavaScript to TypeScript, introducing interfaces for FormContext and standardizing props such as FormProps and FieldProps. By removing legacy any usage and tightening type checks, Dmitry enhanced prop validation and reduced the risk of runtime errors in form handling. His work established a generic FormState to support scalable forms, leveraging React and TypeScript to create a more robust front end foundation. This refactor enables safer future development and cleaner, more reliable code.