redux-doctitle/.babelrc

{
  "presets": [
    [
      "@babel/preset-env", {
        "targets": {
          "chrome": 60,
          "edge": 14,
          "firefox": 54,
          "ie": 9,
          "opera": 46,
          "safari": 9
        }
      }
    ],
    "@babel/preset-react"
  ]
}