| Name | Lines of code | Maintainability | Test coverage |
| test/unit/npdu.spec.js | 109 | A 0 mins | |
| lib/services/atomic-write-file.js | 116 | C 1 day | |
| lib/services/get-event-information.js | 124 | C 7 hrs | |
| test/unit/service-read-property-multiple.spec.js | 127 | A 0 mins | |
| lib/services/atomic-read-file.js | 134 | C 1 day | |
| test/unit/service-write-property-multiple.spec.js | 139 | A 0 mins | |
| test/unit/apdu.spec.js | 149 | A 0 mins | |
| lib/services/get-enrollment-summary.js | 160 | C 1 day | |
| lib/apdu.js | 174 | A 0 mins | |
| lib/services/read-range.js | 186 | C 7 hrs | |
| test/unit/service-write-property.spec.js | 194 | A 0 mins | |
| lib/services/event-notify-data.js | 204 | D 1 day | |
| test/unit/service-event-notify-data.spec.js | 301 | A 3 hrs | |
| test/unit/service-read-property.spec.js | 518 | C 1 day | |
| lib/client.js | 798 | F 1 wk | |
| lib/asn1.js | 1,528 | F 2 wks | |
| lib/enum.js | 2,069 | F 5 days |