Imported modules not polyfill-ing

[achavez]

So my understanding of Babel is that with the way we have it setup it should be transpiling all JS features that aren't widely supported, but that seems to not be happening with everything that we need to support IE11.

Example:

Looking at the code for babel-preset-es2015, it doesn't appear that transformation is applied: https://github.com/babel/babel/blob/master/packages/babel-preset-es2015/src/index.js

So I'm wondering if we should consider a different transform. It looks like Symbol is ES2016 or ES6. Searching for babel-preset-es2016 leads to babel-preset-latest which leads to babel-preset-env.

So maybe we should use that?

cc @allanjamesvestal

[achavez]

Maybe we try something like:

$ npm install --save-dev babel-preset-env

  presets: [
    ["env", {
      "targets": {
        "browsers": ["last 2 versions", "ie >= 10"]
      }
    }]
  ]

[achavez]

babel-preset-env is implemented and will be in next release