redux-devtools/packages/redux-devtools-inspector/.babelrc

{
  "presets": ["@babel/preset-env", "@babel/preset-react"],
  "plugins": [
    "@babel/plugin-transform-runtime",
    "@babel/plugin-proposal-class-properties",
    "@babel/plugin-proposal-export-default-from",
    "@babel/plugin-proposal-do-expressions"
  ]
}