A plugin factory. The options parameter is optional exactly when T has no required members
({} extends T — every field is optional, or T is void), so SomePlugin() is accepted
without an empty {}; a plugin whose options include a required field still demands them.
A plugin factory. The options parameter is optional exactly when
Thas no required members ({} extends T— every field is optional, orTisvoid), soSomePlugin()is accepted without an empty{}; a plugin whose options include a required field still demands them.