This function returns the number of environments between env and the empty environment, including env. The depth of env is also the number of parents of env (since the empty environment counts as a parent).

env_depth(env)

## Arguments

env An environment.

## Value

An integer.

The section on inheritance in env() documentation.
env_depth(empty_env())#> [1] 0env_depth(pkg_env("rlang"))#> [1] 10