.eslintrc.json

{
  "parser"  : "@babel/eslint-parser",

  "extends" : [
    "eslint:recommended"
  ],
  "plugins" : [
    "node",
    "import"
  ],
  "env"     : {
    "mocha": true,
    "node": true,
    "es6": true,
    "browser" : false
  },
  "settings": {
    "import/parser": "@babel/eslint-parser",
    "ecmascript": 6
  },

  "parserOptions": {
    "sourceType": "module",
    "allowImportExportEverywhere": true,
    "ecmaFeatures": {
      "globalReturn": false
    }
  },
  "rules": {
    "import/no-extraneous-dependencies": [
      "error",
      {
        "devDependencies": ["./test/**/*.js"],
        "optionalDependencies": false,
        "peerDependencies": true
      }
    ],
    "import/default": "error",
    "import/no-unresolved": "warn",
    "import/named": "error",
    "import/namespace": "error",
    "import/export": "error",
    "import/no-duplicates": "error",
    "import/imports-first": "error"
  }
}