add codecov

[philschatz]

this adds codecov.io (I think... check the CI status notifications & Travis to confirm) for the NodeJS code.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@5f60bbf). Click here to learn what that means.
The diff coverage is 100%.

@@           Coverage Diff            @@
##             master     #17   +/-   ##
========================================
  Coverage          ?   82.6%           
========================================
  Files             ?       1           
  Lines             ?      69           
  Branches          ?       7           
========================================
  Hits              ?      57           
  Misses            ?      12           
  Partials          ?       0

Impacted Files	Coverage Δ
typeset/converter.js	82.6% <100%> (ø)

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[PiotrKozlowski]

@philschatz I found this thread istanbuljs/nyc#514 (comment) and I fixed cov_... is not defined problem but I can't tell if this is a valid solution and will not affect cov output. Can you somehow check it?

[philschatz]

I think that worked! To check, I found the link codecov outputted in travis

• link: https://codecov.io/github/Connexions/baked-pdf/commit/0b26bc1410c04a5801363fe1090f6f2aa7014e74

And from there, I could click around to see coverage of the commit diff as well as full coverage of converter.js

The 1st commit is a little weird in codecov because there is nothing to compare against, but subsequent PR's should be more readable. Also, for what it is worth, I also use the codecov browser extension to see coverage of files when browsing github

Codecov

Code coverage done right.

Hosted coverage report highly integrated with GitHub, Bitbucket and GitLab. Awesome pull request comments to enhance your QA.

[philschatz]

I went ahead and merged this Pull Request but in the future, whoever is the last person to Accept can merge.