.babelrc

{
  "presets": [
    [
      "@babel/preset-env",
      {
        "shippedProposals": true,
        "modules": false,
        "comments": true,
        "targets": {
          "browsers": [
            "last 2 versions"
          ]
        }
      }
    ],
    "@babel/preset-react"
  ],
  "plugins": [
    "syntax-dynamic-import"
  ],
  "env": {
    "test": {
      "presets": [
        [
          "@babel/preset-env",
          {
            "shippedProposals": true,
            "comments": true,
            "targets": {
              "browsers": [
                "last 2 versions"
              ]
            }
          }
        ],
        "@babel/preset-react"
      ],
      "plugins": [
        "syntax-dynamic-import"
      ]
    }
  }
}