Creating type-safe custom client SDKs using TypeAPI

APIs are crucial for modern software development, enabling seamless communication between systems, with the OpenAPI specification being a popular method for API documentation. However, TypeAPI emerges as an alternative focused on type-safe code generation, automating the creation of client SDKs from its specifications, thus reducing manual coding errors. TypeAPI structures API definitions using JSON format, covering operations, return types, request data mapping, exception handling, and data structures, which facilitates backend and frontend team collaboration. A practical demonstration showcases TypeAPI's use in developing a to-do app's API, while a comparison with Fern highlights differences in development team size, documentation quality, CLI availability, SDK quality, and overall usability. Fern appears to have advantages in documentation and usability, but the choice between the two should depend on specific project needs and preferences.