The combined context required by every codec in a record.
Map each child context to a function parameter before forming the union so a
legacy any (normalized to unknown by ContextType) cannot absorb
the other contexts. Inferring from the resulting contravariant parameter
position converts the function union into an intersection of its contexts.
The combined context required by every codec in a record.
Map each child context to a function parameter before forming the union so a legacy
any(normalized tounknownby ContextType) cannot absorb the other contexts. Inferring from the resulting contravariant parameter position converts the function union into an intersection of its contexts.