wiki/.babelrc

{
  "comments": true,
  "presets": [
    ["env", {
      "targets": {
        "browsers": [
          "last 6 Chrome major versions",
          "last 6 Firefox major versions",
          "last 4 Safari major versions",
          "last 4 Edge major versions",
          "last 3 iOS major versions",
          "last 3 Android major versions",
          "last 2 ChromeAndroid major versions",
          "Explorer 11"
        ]
      }
    }],
    "stage-2"
  ]
}