| Name | Lines of code | Maintainability | Test coverage |
| examples/method_complexity.rb | 28 | A 0 mins | |
| examples/experimental_replacement.rb | 32 | A 1 hr | |
| examples/build_stubbed_and_let_it_be_experiment.rb | 33 | A 0 mins | |
| lib/fast/shortcut.rb | 44 | A 0 mins | B 89% |
| examples/similarity_research.rb | 47 | A 0 mins | |
| lib/fast/git.rb | 58 | A 0 mins | F 44% |
| lib/fast/rewriter.rb | 65 | A 0 mins | A 100% |
| lib/fast/sql/rewriter.rb | 71 | A 0 mins | |
| lib/fast/sql.rb | 91 | A 1 hr | |
| lib/fast/experiment.rb | 169 | A 1 hr | D 66% |
| lib/fast/cli.rb | 213 | B 6 hrs | B 85% |
| lib/fast.rb | 489 | C 1 day | A 98% |