Check out a free preview of the full Creating an Open Source JavaScript Library on Github course:
The "Babel Register & Istanbul" Lesson is part of the full, Creating an Open Source JavaScript Library on Github course featured in this preview video. Here's what you'd learn in this lesson:

Now that the library is using ES6 syntax and transpiling with Babel, the test scripts will not run. Kent explains why this is happening and introduces the Babel Register plugin which will help alleviate the problem. He also talks about why the Babel plugin, Istanbul will now be used for code coverage.

Get Unlimited Access Now