Fill es6.reflect.own-keys field.

[yavorsky]

Last commit just fills the es6.reflect.own-keys field, but other changes in builtIns.json seems to be cfa0f6f and c95759d reflection.

[hzoo]

So in pluginFeatures we would have something like https://github.com/babel/babel-preset-env/blob/master/data/pluginFeatures.js#L97-L99

  "transform-es2015-unicode-regex": {
    features: [
      'RegExp "y" and "u" flags / "u" flag, case folding',
      'RegExp "y" and "u" flags / "u" flag, Unicode code point escapes',
      'RegExp "y" and "u" flags / "u" flag',
    ],
  },

so I changed the format a bit but the logic doesn't work the same

const getLowestImplementedVersion = ({ features }, env) => {
  let tests = flatten(compatibilityTests
    .filter((test) => features.indexOf(test.name) >= 0)

same with DataView

so features would be ["typed arrays / DataView"]

["typed arrays / DataView"].indexOf(test.name) >= 0 where test.name === "typed arrays / DataView (Int32)"

I was thinking we wouldn't have to hardcode each test but that doesn't work.

[yavorsky]

Yes, cool! It was rather a hotfix then a long-term solution.

[hzoo]

Ok my pr is #62, going to close this in favor of that for now