ReadonlyenvThe definition of the variable that holds the environment
Readonlyenvirdata with its environment replaced by the resolved envState for in-env lookups.
ReadonlyenvirNode ID of the USE of the envir variable (e.g. the e in envir=e).
Optional Readonlystackwhich real stack env this resolves to, absent for a tracked custom env; only 'global' reaches the real frame chain
Result type for a successful envir-argument resolution.