如何执行 node js 应用程序的代码覆盖？

Question

Do we have a code coverage tool that detects how much code is covered. I don't want to have any testing framework here. Just the way users use it, it should be able to give real time code coverage details. Is it possible?

Answer 1

Well, yes – just run your application under a suitable coverage runner such as nyc :

Eg if you'd start your app with npm start , have nyc installed and run with

nyc --reporter=lcov npm start

Of course you'll need to run for a while (so your users get to cover your app), and then capture the LCOV/HTML report generated.