React-MobX Error: The 'decorators' plugin requires a 'decoratorsBeforeExport' option, whose value must be a boolean

Question

I get the following error: If you are migrating from Babylon/Babel 6 or want to use the old decorators proposal, you should use the \'decorators-legacy\' plugin instead of \'dec

Answer 1

"babel": {
   "presets": [
     "react-app"
   ],
  "plugins": [
  [
    "@babel/plugin-proposal-decorators",
    {
      "legacy": true
    }
  ],
  [
    "@babel/plugin-proposal-class-properties",
    {
      "loose": true
    }
   ]
  ]
 },
 "devDependencies": {
 "@babel/plugin-proposal-decorators": "^7.3.0"
}