.eslintrc.js

module.exports = {
  env: {
    browser: true,
    node: true,
    es2021: true
  },
  parser: 'vue-eslint-parser',
  plugins: ['@typescript-eslint'],
  extends: ['plugin:@typescript-eslint/recommended', 'plugin:vue/vue3-recommended'],
  parserOptions: {
    ecmaVersion: 12,
    sourceType: 'module',
    parser: '@typescript-eslint/parser'
  },
  rules: {
    // js/ts
    'no-undef': 1,
    'eol-last': 'error',
    'no-trailing-spaces': ['error', { ignoreComments: true }],
    'comma-style': ['error', 'last'],
    'comma-dangle': ['error', 'never'],
    quotes: ['error', 'single', { avoidEscape: true, allowTemplateLiterals: true }],
    camelcase: ['error', { properties: 'never' }],
    semi: ['error', 'never'],
    indent: ['error', 2, { SwitchCase: 1 }],
    'object-curly-spacing': ['error', 'always'],
    'arrow-parens': ['error', 'always'],
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/member-delimiter-style': [
      'error',
      {
        multiline: {
          delimiter: 'none',
          requireLast: false
        },
        singleline: {
          delimiter: 'semi',
          requireLast: true
        }
      }
    ],
    // vue
    'vue/no-v-html': 'off',
    'vue/singleline-html-element-content-newline': 'off',
    'vue/html-self-closing': [
      'error',
      {
        html: {
          void: 'always',
          normal: 'never',
          component: 'always'
        }
      }
    ],
    'vue/max-attributes-per-line': [
      'error',
      {
        singleline: 3,
        multiline: 1
      }
    ],
    'vue/require-default-prop': 'off',
    'vue/html-closing-bracket-spacing': 'error'
  }
}