webdav-js/.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "useBuiltIns": "usage",
        "corejs": 3,
        "targets": {
          "ie": "11"
        }
      }
    ],
    "minify"
  ],
  "plugins": [
    "@babel/plugin-proposal-class-properties",
    "@babel/plugin-proposal-private-methods",
    "@babel/plugin-transform-runtime"
  ],
  "only": [
    "./src/webdav.js",
    "./src/lib/**/*.js"
  ]
}