Please help take a look at this issue: Seems unattended for some time
https://github.com/facebook/flow/issues/5883
I also encounter similar matter
If there already is an issue please comment there. Second, "urgent" is subjective. Feel free to fix it if it's so urgent for you that you cannot wait. I say this as another user - with zero connection to FB or the project (I got the "Contributor" tag for adding just a few lines to the web page docs and a few type definitions) and who also isn't always satisfied with the project. Nevertheless, you have to recognize that this is a classical open source project: They open sourced something they made for themselves and you are free to use and modify it. It is not a product! Which means if your wishes are heard it is purely by coincidence, when they (FB) happened to have the same need. The way you act here is a negative, showing disregard for both the Github issues process (in general) as well as how open source projects work.
Most helpful comment
If there already is an issue please comment there. Second, "urgent" is subjective. Feel free to fix it if it's so urgent for you that you cannot wait. I say this as another user - with zero connection to FB or the project (I got the "Contributor" tag for adding just a few lines to the web page docs and a few type definitions) and who also isn't always satisfied with the project. Nevertheless, you have to recognize that this is a classical open source project: They open sourced something they made for themselves and you are free to use and modify it. It is not a product! Which means if your wishes are heard it is purely by coincidence, when they (FB) happened to have the same need. The way you act here is a negative, showing disregard for both the Github issues process (in general) as well as how open source projects work.