.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "targets": {
          "browsers": [
            "last 2 versions",
            "ie 11",
            "ie 10",
            "ie 9"
          ]
        }
      }
    ]
  ],
  "plugins": [
    "array-includes",
    "@babel/plugin-syntax-dynamic-import",
    "@babel/plugin-syntax-import-meta",
    "@babel/plugin-proposal-class-properties",
    "@babel/plugin-proposal-json-strings",
    [
      "@babel/plugin-proposal-decorators",
      {
        "legacy": true
      }
    ],
    "@babel/plugin-proposal-function-sent",
    "@babel/plugin-proposal-export-namespace-from",
    "@babel/plugin-proposal-numeric-separator",
    "@babel/plugin-proposal-throw-expressions"
  ],
  "comments": false,
  "env": {
    "minify": {
      "presets": [
        "@babel/preset-env",
        ["babel-preset-minify", { "builtIns": false }]
      ]
    }
  }
}