.eslintrc.js

module.exports = {
  root: true,

  env: {
    node: true
  },

  parserOptions: {
    parser: '@typescript-eslint/parser'
  },
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
    '@typescript-eslint/member-delimiter-style': [
      'error',
      {
        multiline: {
          delimiter: 'none', // 'none' or 'semi' or 'comma'
          requireLast: true
        },
        singleline: {
          delimiter: 'semi', // 'semi' or 'comma'
          requireLast: false
        }
      }
    ],
    // ? Need to use @ts-ignore for working around https://github.com/vuejs/vetur/issues/1707#issuecomment-686851677
    '@typescript-eslint/ban-ts-ignore': 'off'
  },

  overrides: [
    {
      files: ['**/__tests__/*.{j,t}s?(x)', '**/tests/unit/**/*.spec.{j,t}s?(x)'],
      env: {
        jest: true
      }
    }
  ],

  extends: ['plugin:vue/essential', 'eslint:recommended', '@vue/prettier', '@vue/typescript/recommended']
}