def max_depth
import bend-collections@1.0.0.0/src/containers/bitset.bend as Bitsetimport Base
145# 2^31 words = 2^36 bits: the capacity of the packed representation (the
146# constant is never materialised as a value; `depth_for` simply stops at this
147# depth). Every word index is then a representable U32 and Base's index
148# masking over the word array is the identity.
149def max_depth() -> Nat:
150 31n