message: Remove unused babel preset option
diff: @@ -13,12 +13,7 @@ module.exports = function (api) {
  let configBrowserify = {
  presets: [
  "@babel/preset-flow",
  - [
  - "@babel/preset-env",
  - {
  - "useBuiltIns": "entry"
  - }
  - ]
  + "@babel/preset-env"
  ],
  plugins: [
  "@babel/plugin-proposal-class-properties",
  