Next v6.0.0 babel plugin provided an invalid property of "default"

Ever since upgrading to Next 6 and trying to take advantage of the new _app.js file, I seem to have issues with having a .babelrc file. If I remove the .babelrc file everything works fine except for my mocha tests.

But keeping the file:

{
  "presets": [
    "es2015",
    "next/babel",
    "stage-2"
  ]
}

I get the following error:

Error: Plugin 0 specified in "/Users/dillonraphael/Desktop/REED/node_modules/next/babel.js" provided an invalid property of "default" (While processing preset: "/Users/dillonraphael/Desktop/REED/node_modules/next/babel.js")

This is my package.json:

"scripts": {
   "dev": "nodemon -w ./server --exec babel-node ./server/server.js --presets=es2015,stage-2",
   "build": "next build",
   "start": "next start",
   "test": "mocha --require babel-core/register --exit"
 },
 "dependencies": {
   "@zeit/next-sass": "^0.1.2",
   "dotenv": "^5.0.1",
   "express": "^4.16.2",
   "mongoose": "^5.0.8",
   "next": "^5.1.0",
   "next-images": "^0.10.1",
   "node-sass": "^4.9.0",
   "react": "16.2.0",
   "react-dom": "16.2.0",
   "renaissancecss": "^3.0.0"
 },
 "license": "ISC",
 "devDependencies": {
   "babel-cli": "^6.26.0",
   "babel-preset-es2015": "^6.24.1",
   "babel-preset-stage-2": "^6.24.1",
   "chai": "^4.1.2",
   "chai-http": "^3.0.0",
   "mocha": "^5.0.4",
   "nodemon": "^1.17.1"
 }

[JakeFDev]

Earlier this week I was was running into the same issue trying to get jest up and running, mocha ran into the same problem. Got back to it today and just doing a copy/paste of the “with-jest” example babelrc and package.json’s relevant dev dependencies worked for me, which is odd because thats the first thing I tried earlier this week but I got this error.

[dillonraphael]

@maniart Check out http://babeljs.io/env