module SimpleCov::Combine::FilesCombiner

def combine(coverage_a, coverage_b)
  combination = {"lines" => Combine.combine(LinesCombiner, coverage_a["lines"], coverage_b["lines"])}
  combination["branches"] = Combine.combine(BranchesCombiner, coverage_a["branches"], coverage_b["branches"]) if SimpleCov.branch_coverage?
  combination
end