.babelrc

{
  "plugins": [
    "babel-plugin-transform-decorators-legacy",
    ["inline-import", {
      "extensions": [
        ".graphql",
        ".env",
        ".html",
        ".mjml",
        ".txt",
        ".hbs"
      ]
    }],
    "transform-class-properties"
  ],

  "presets": [
    ["env", { "modules": "commonjs" }],
    "next/babel"
  ],

  "env": {
    "development": {
      "plugins": [
        "babel-plugin-transform-decorators-legacy",
        ["inline-import", {
          "extensions": [
            ".graphql",
            ".env",
            ".html"
          ]
        }],
        "transform-class-properties"
      ],
      "presets": "next/babel"
    },

    "production": {
      "plugins": [
        "babel-plugin-transform-decorators-legacy",
        ["inline-import", {
          "extensions": [
            ".graphql",
            ".env",
            ".html"
          ]
        }],
        "transform-class-properties"
      ],
      "presets": "next/babel"
    }
  }
}