| Name | Lines of code | Maintainability | Test coverage |
| src/reviverFactory.js | 33 | A 0 mins | |
| src/createUnionType.js | 39 | A 1 hr | |
| src/types/Date.js | 55 | A 0 mins | |
| src/types/Map.js | 61 | A 1 hr | |
| src/iterableHelpers.js | 62 | A 3 hrs | |
| src/types/StringMap.js | 62 | A 1 hr | |
| src/proxyFactory.js | 63 | A 0 mins | |
| src/types/EnumMap.js | 64 | A 1 hr | |
| src/types/Number.js | 65 | A 2 hrs | |
| src/types/Set.js | 66 | A 0 mins | |
| src/types/Enum.js | 69 | A 35 mins | |
| src/types/List.js | 75 | A 0 mins | |
| src/metadata/metadata.js | 85 | A 0 mins | |
| src/types/AbstractMap.js | 93 | A 55 mins | |
| src/U.js | 97 | A 1 hr | |
| devtools/customFormatter.js | 106 | A 0 mins | |
| src/getSchema.js | 114 | B 5 hrs | |
| karma.conf.js | 115 | B 4 hrs | |
| src/types/Base.js | 116 | A 1 hr | |
| src/index.js | 144 | A 0 mins | |
| src/types/Maybe.js | 153 | A 1 hr | |
| src/metadata/jsonSchemaMetadata.js | 344 | D 2 days |