.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
    node: true,
  },
  extends: [
    'plugin:vue/recommended',
    '@vue/airbnb',
  ],
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'no-alert': 'off',
    'no-param-reassign': 'off',
    'max-len': ['error', 120],
    'vue/html-indent': [
      'error', 2, {
        attribute: 2,
        closeBracket: 0,
        alignAttributesVertically: true,
        ignores: [],
      },
    ],
    'vue/max-attributes-per-line': [
      2, {
        singleline: 1,
        multiline: {
          max: 1,
          allowFirstLine: true,
        },
      },
    ],
    'vue/html-self-closing': [
      'error', {
        html: {
          void: 'never',
          normal: 'never',
          component: 'never',
        },
      },
    ],
    'vue/html-closing-bracket-newline': [
      'error', {
        singleline: 'never',
        multiline: 'never',
      },
    ],
  },
  overrides: [
    {
      files: ['*.vue'],
      rules: {
        indent: 'off',
        'vue/script-indent': [
          'error', 2, {
            baseIndent: 1,
            switchCase: 1,
          },
        ],
      },
    },
  ],
  parserOptions: {
    parser: 'babel-eslint',
  },
};