.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
    node: true
  },
  parserOptions: {
    parser: 'babel-eslint'
  },
  extends: ['eslint:recommended', 'standard', 'plugin:vue/recommended'],
  rules: {
    'arrow-parens': ['error', 'as-needed'],
    'no-console': ['warn', { allow: ['warn', 'error'] }],
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'space-before-function-paren': [
      'error',
      {
        anonymous: 'never',
        named: 'never',
        asyncArrow: 'always'
      }
    ],
    'vue/name-property-casing': ['error', 'kebab-case'],
    'vue/html-self-closing': [
      'error',
      {
        html: {
          void: 'always',
          normal: 'always',
          component: 'always'
        },
        svg: 'always',
        math: 'always'
      }
    ],
    'no-unused-vars': [1],
    'no-empty': [1],
    'vue/max-attributes-per-line': [
      2,
      {
        singleline: 20,
        multiline: {
          max: 1,
          allowFirstLine: false
        }
      }
    ]
  }
}