.babelrc

{
  "env": {
    // Compatibility Profile.
    // ES5 output and CommonJS module format.
    "es5_cjs": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "useBuiltIns": "usage",
            "corejs": 3
          }
        ],
        "@babel/preset-typescript",
        "@babel/preset-react"
      ]
    },
    // Compatibility Profile ES Modules.
    // ES5 output with no module transformation (ES Modules syntax).
    // Intended only to generate an index.esm.js.
    "es5_esm": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "modules": false,
            "useBuiltIns": "usage",
            "corejs": 3
          }
        ],
        "@babel/preset-typescript",
        "@babel/preset-react"
      ]
    },
    // Future Profile.
    // ES6 output with no module transformation (ES Modules syntax).
    "es": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "modules": false,
            "useBuiltIns": "usage",
            "corejs": 3,
            "targets": {
              "node": "6.5"
            }
          }
        ],
        "@babel/preset-typescript",
        "@babel/preset-react"
      ]
    },
    // Bundled Profile.
    // ES5 output and UMD module format.
    // To be consumed by <script> html tags.
    "umd": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "modules": false,
            "useBuiltIns": "usage",
            "corejs": 3
          }
        ],
        "@babel/preset-typescript",
        "@babel/preset-react"
      ]
    },
    // Jest Profile.
    // To be used by jest tests.
    "test": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "corejs": 3
          }
        ]
      ]
    }
  },
  "plugins": [
    "@babel/proposal-class-properties",
    "@babel/proposal-object-rest-spread",
    "@babel/plugin-syntax-dynamic-import"
  ]
}