Breaking changes:
- New toFormData helper function that allows the implementor to pass an object and allow axios to convert it to FormData (#3757)
- Removed functionality that removed the the
Content-Typerequest header when passing FormData (#3785) - (*) Refactored error handling implementing AxiosError as a constructor, this is a large change to error handling on the whole (#3645)
- Separated responsibility for FormData instantiation between
transformRequestandtoFormData(#4470) - (*) Improved and fixed multiple issues with FormData support (#4448)
QOL and DevX improvements:
- Added a multipart/form-data testing playground allowing contributors to debug changes easily ()