def unb64u.go
import bend-kit-jwt@0.11.0.1/jwt.bend as Jwtimport Base
134def unb64u.go(s: String, acc: String, +n: U32) -> String:
135 match s:
136 case SNil{}:
137 String.reverse(unb64u.pad((n .&. 3 : U32), acc))
138 case SCon{Chr{+c}, t}:
139 unb64u.go(t, SCon{Chr{unb64u.c(c)}, acc}, (n + 1 : U32))