Benjamin E. Coe db67d7fdce Switch to nyc, babel-plugin-istanbul & codecov-node for code coverage (#4885)
* Switch to nyc, babel-plugin-istanbul & codecov-node for code coverage

This setup (very much like Babylon's) let us trace code coverage back to the `src/` directories of packages.

* Exclude package tests from coverage report

* fix: upgrade to version of nyc that tweaks a couple more things for babel

* fix: remove comment based on @hzoo's review
2016-11-28 14:17:52 -05:00
..
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