istanbul(latest: 0.4.5) Yet another JS code coverage tool that computes statement, line, function and branch coverage with module loader hooks to transparently add coverage when running tests. Supports all JS coverage use cases including unit tests, server side functional tests
istanbul-lib-hook(latest: 3.0.0) Hooks for require, vm and script used in istanbul
@istanbuljs/schema(latest: 0.1.3) Schemas describing various structures used by nyc and istanbuljs