babel.config.json

{
  "plugins": [
    [
      "@babel/plugin-transform-runtime",
      {
        "corejs": 2
      }
    ],
    [
      "@babel/plugin-proposal-decorators",
      {
        "legacy": true
      }
    ],
    "@babel/plugin-proposal-class-properties",
    "./tooling/babel-plugin-inject-package-version",
    [
      "@babel/plugin-transform-classes",
      {
        "globals": [
          "Error"
        ]
      }
    ],
    "@babel/plugin-proposal-export-default-from",
    "@babel/plugin-proposal-export-namespace-from",
    "lodash",
    "@babel/plugin-proposal-nullish-coalescing-operator",
    "@babel/plugin-proposal-object-rest-spread",
    "@babel/plugin-proposal-optional-chaining",
    "@babel/plugin-syntax-async-generators",
    "@babel/plugin-proposal-async-generator-functions"
  ],
  "presets": [
    [
          "@babel/preset-env",
          {
            "targets": [
              ">0.25% in US",
              "last 2 Chrome major versions",
              "last 2 Firefox major versions",
              "not dead",
              "not UCAndroid > 0",
              "ie >= 11",
              "maintained node versions"
            ]
          }
        ],
        "@babel/preset-typescript"
      ],
      "sourceMaps": true
}