.eslintrc.js

// http://eslint.org/docs/user-guide/configuring

module.exports = {
  root: true,
  parser: 'babel-eslint',
  parserOptions: {
    sourceType: 'module'
    },
  env: {
    browser: true,
    },
  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': {
        // don't require .vue extension when importing
    'import/extensions': ['error', 'always',
            {
      'js': 'never',
      'vue': 'never'
            }
        ],
        // allow optionalDependencies
    'import/no-extraneous-dependencies': ['error',
            {
      'optionalDependencies': ['test/unit/index.js'
                ]
            }
        ],
        // allow debugger during development
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0
    }
}