.babelrc

{
  "presets": [
    ["@babel/env", {
        "modules": false,
    }],
    "@babel/react"
  ],
  "plugins": [
    ["react-hot-loader/babel"],
    ["@babel/plugin-transform-runtime"],
    ["@babel/plugin-syntax-dynamic-import"],
    ["@babel/plugin-proposal-decorators", { "legacy": true }],
    ["@babel/plugin-proposal-class-properties", { "loose": true }],
    [
      "react-css-modules",
      {
        "filetypes": {
            ".less": {
                "syntax": "postcss-less"
            }
        },
        "generateScopedName": "[name]__[local]___[hash:base64:5]"
      }
    ]
  ],
  "env": {
    "production": {
      "plugins": [
        [
          "react-css-modules",
          {
            "filetypes": {
                ".less": {
                    "syntax": "postcss-less"
                }
            },
            "generateScopedName": "[hash:base64:5]"
          }
        ]
      ]
    }
  }
}