Pattern: Use of select.map instead of filter_map
Issue: -
In Ruby 2.7, Enumerable#filter_map has been added.
This rule identifies places where select.map can be replaced by filter_map.
# bad
ary.select(&:foo).map(&:bar)
ary.filter(&:foo).map(&:bar)
# good
ary.filter_map { |o| o.bar if o.foo }