zyuas.com/.babelrc

{
  "presets": [
    ["@babel/preset-env", {
      "modules": false,
      "targets": {
        "browsers": ["> 1%", "last 2 versions", "not ie <= 8"]
      }
    }]
  ],
  "plugins": [
    "@babel/transform-runtime",
    "transform-vue-jsx",
    "@babel/plugin-syntax-dynamic-import",
    ["@babel/plugin-proposal-decorators", { "legacy": true }],
    ["@babel/plugin-transform-class-properties", { "loose": true }],
    ["@babel/plugin-transform-private-property-in-object", { "loose": true }],
    ["@babel/plugin-transform-private-methods", { "loose": true }]
  ]
}