istanbul-lib-instrument
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Istanbul instrumenter library.
Version 1.1.x now implements instrumentation using Babel. The implementation is inspired
by prior art by @dtinth as demonstrated in the __coverage__ babel plugin.
It provides 2 "modes" of instrumentation.
The old API that is mostly unchanged (except for incompatibilities noted) and performs the instrumentation using babel as a library.
A programVisitor function for the Babel AST that can be used by a Babel plugin
to emit instrumentation for ES6 code directly without any source map
processing. This is the preferred path for babel users. The Babel plugin is
called babel-plugin-istanbul.
Incompatibilities and changes to instrumentation behavior can be found in v0-changes.md.
FAQs
Core istanbul API for JS code coverage
The npm package istanbul-lib-instrument receives a total of 32,932,479 weekly downloads. As such, istanbul-lib-instrument popularity was classified as popular.
We found that istanbul-lib-instrument demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
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