TamperMonkey for Safari should support the cross-platform WebExtension API used in other browsers' TamperMonkey versions introduced in Safari 14.0 (which supports macOS 10.14+)
There is only a $1.99 version of TamperMonkey for Safari 13+ which does not use it.
Not applicable
Yes, but I'm not sure exactly when this will happen because again it's not just about repackaging a WebExtension and you're done, but as I found out after a first brief investigation, there are a lot of modifications required to adapt a WebExtension for Safari 14.
Also the current solution supports Safari 12, 13 and 14 as well.
Most helpful comment
Yes, but I'm not sure exactly when this will happen because again it's not just about repackaging a WebExtension and you're done, but as I found out after a first brief investigation, there are a lot of modifications required to adapt a WebExtension for Safari 14.
Also the current solution supports Safari 12, 13 and 14 as well.