.eslintrc.js

module.exports = {
  env: {
    "browser": true,
  },
  root: true,
  parser: 'babel-eslint',
  parserOptions: {
    sourceType: 'module'
  },
  extends: 'airbnb-base',
  // required to lint *.vue files
  plugins: [
    'html'
  ],
  // check if imports actually resolve
  'settings': {
    'import/resolver': {
      'webpack': {
        'config': 'build/webpack.base.conf.js'
      }
    }
  },
  // add your custom rules here
  'rules': {

    "no-restricted-syntax": ["off", "BinaryExpression[operator='in']"],
    // don't require .vue extension when importing
    'import/extensions': ['error', 'always', {
      'js': 'never',
      'vue': 'never'
    }],
    "import/imports-first": 0,
    'import/no-dynamic-require': 0,
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
    "no-use-before-define": ["error", { "functions": false,}],
    "no-unused-vars": 0,
    "no-console": 0,
    "no-underscore-dangle": 0,
    "arrow-parens": 0,
    "no-param-reassign": 0,
    "no-unused-expressions": 0,
    "padded-blocks": 0,
    "prefer-const": 1,
    "linebreak-style":0,
    "max-len":0,
    "import/no-extraneous-dependencies": 0,
  }
}