Change babel config setup

[megawac]

This change is to support the updated babel config setup to support parsing the config in dependencies.

Currently if I try to use jsts with babel-7I'll get errors if I try to import anything in the org or java directories and use them in jest unit tests as they use es6 imports/exports (it seems to work with older versions of babel). This is because of this change here jestjs/jest#6053 (comment). Here is a big thread on the topic jestjs/jest#6229.

The simple fix is to just swap .babelrc to babel.config.js as in this MR. I've verified this works for the project I'm working on with a mirror of jsts.

[codecov]

Codecov Report

Merging #385 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #385   +/-   ##
=======================================
  Coverage   62.63%   62.63%           
=======================================
  Files         279      279           
  Lines       14242    14242           
=======================================
  Hits         8920     8920           
  Misses       5322     5322

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[bjornharrtell]

Thanks, read about it (superficially) and I think this change makes sense. But I want to evaluate a bit more before merging.

[megawac]

Sure no problem, let me know if you need anything from my end

[bjornharrtell]

Done with 20c2c88 but I target Node 10 instead.