Hello, I’m the individual submitting the PR. It is a hard nut to crack for sure and took over a solid month of work.
If you are using React, Slate is IMO an excellent choice and the code quality/extensibility/community are great. I really appreciate DraftJS for coming out first and I contributed there as well, but Slate’s goals are overall better aligned to the needs of the community.
Having used Draft and Slate, Slate is definitely the choice to go with today if you want something built on top of React.
Draft appears to be essentially somewhat unmaintained, whereas the Slate community has continued to be very active (thanks for the Android support! That's one reason we ended up using Quill for now)
The built-in copy-paste handling is pretty messy to extend compared to Slate, where the system of normalizers works a lot better.
If you are using React, Slate is IMO an excellent choice and the code quality/extensibility/community are great. I really appreciate DraftJS for coming out first and I contributed there as well, but Slate’s goals are overall better aligned to the needs of the community.