.babelrc

{
  "presets": [
    [
      // Latest stable ECMAScript features
      "@babel/preset-env",
      {
        "useBuiltIns": false,
        // Do not transform modules to CJS
        "modules": "auto",
        "targets": {
          "chrome": "49",
          "firefox": "52",
          "opera": "36",
          "edge": "79",
          "node": "current"
        }
      }
    ],
    "@babel/typescript",
    "@babel/react"
  ],
  "env": {
    "test": {
      "plugins": ["@babel/plugin-transform-modules-commonjs"]
    }
  },
  "plugins": [
    ["@babel/plugin-proposal-class-properties"],
    [
      "@babel/plugin-transform-destructuring",
      {
        "useBuiltIns": true
      }
    ],
    [
      "@babel/plugin-proposal-object-rest-spread",
      {
        "useBuiltIns": true
      }
    ],
    [
      // Polyfills the runtime needed for async/await and generators
      "@babel/plugin-transform-runtime",
      {
        "helpers": false,
        "regenerator": true
      }
    ]
  ]
}