.babelrc

{
  "env": {
    "production": {
      "presets": [
        ["@babel/env", {
          "targets": {
            "node": "9"
          },
          "modules": "commonjs",
          "useBuiltIns": false,
          "debug": false,
          "loose": true
        }],
        "@babel/stage-0"
      ],
      "plugins": ["add-module-exports", "@babel/plugin-proposal-object-rest-spread"]
    },
    "development": {
      "presets": [
        ["@babel/env", {
          "targets": {
            "node": "9",
          },
          "modules": "commonjs",
          "useBuiltIns": false,
          "debug": true,
          "loose": true
        }],
        "@babel/stage-0"
      ],
      "plugins": [ "add-module-exports", "@babel/plugin-proposal-object-rest-spread"]
    },
    "test": {
      "presets": [
        "@babel/stage-0",
        ["@babel/env", {
          "targets": {
            "node": "current"
          },
          "modules": false,
          "useBuiltIns": true,
          "debug": true,
        }],
      ],
      "plugins":  [
        "@babel/plugin-proposal-object-rest-spread"
      ]
    }
  }
}