Istanbul, a JavaScript test coverage tool.Istanbul instruments your ES5 and ES2015+ JavaScript code with line counters, so that you can track how well your unit-tests exercise your codebase. The nyc command-line-client for Istanbul works well with most JavaScript testing frameworks: tap, mocha, AVA, etc. #Features First class support of ES6/ES2015+ using babel-plugin-istanbul. A collection of reporters, providing both terminal and HTML ou
