ERROR in ./index.js
 Module build failed: Error: Plugin/Preset files are not allowed to export objects, only functions.

var config = {
  entry: './index.js',
  output: {
  path: __dirname,
  filename: 'block.build.js',
  },
  devServer: {
  contentBase: './Carousel'
  },
  module : {
  rules : [
  {
  test: /.js$/,
  loader: 'babel-loader',
  exclude: /node_modules/,
  query: {
  presets: ['react', 'es2015'],
  plugins: ['transform-class-properties']
  }
  }
  ]
  }
 };
 module.exports = config;

{
  "name": "carousel",
  "version": "1.0.0",
  "description": "",
  "main": "webpack.config.js",
  "dependencies": {
    "@babel/core": "^7.0.0-beta.40",
    "babel-cli": "^6.26.0",
    "babel-loader": "^8.0.0-beta.0",
    "babel-plugin-lodash": "^3.3.2",
    "babel-plugin-react-transform": "^3.0.0",
    "babel-preset-react": "^6.24.1",
    "cross-env": "^5.1.3",
    "lodash": "^4.17.5",
    "react": "^16.2.0",
    "react-dom": "^16.2.0",
    "react-swipeable": "^4.2.0",
    "styled-components": "^3.2.1"
  },
  "scripts": {
    "test": "echo "Error: no test specified" && exit 1",
    "watch": "webpack --watch",
    "start": "webpack-dev-server --open",
    "build": "webpack"
  },
  "devDependencies": {
    "webpack": "^4.1.1",
    "webpack-cli": "^2.0.10",
    "webpack-dev-server": "^3.1.0"
  },
  "author": "brad traversy",
  "license": "ISC"
}