Gemfile
source "https://rubygems.org" git_source(:github) {|repo_name| "https://github.com/#{repo_name}" } gemspec gem "json", "2.4.1" if RUBY_VERSION == "2.0.0" group :metrics do if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("2.5.0") gem "coveralls_reborn", "~> 0.20.0" gem "simplecov", "~> 0.21.0" end gem "yardstick", "~> 0.9.9"end group :benchmarks do gem "benchmark-ips", "~> 2.7.2"end