Forbid shadow attachment. Polymorphic — method or class form.
ShadowApi.attach consults both maps at attach time and throws
ShadowError on conflict.
Bare @Unshadowable on a method is invoked as @Unshadowable
(no parens) — TS hands as 3 method args. Bare on a class is
@Unshadowable (still no parens) — 1 class arg.
Forbid shadow attachment. Polymorphic — method or class form.
ShadowApi.attachconsults both maps at attach time and throwsShadowErroron conflict.Bare
@Unshadowableon a method is invoked as@Unshadowable(no parens) — TS hands as 3 method args. Bare on a class is@Unshadowable(still no parens) — 1 class arg.