.eslintrc.js

const poi = require('poi');
const app = poi();
const webpackConfig = app.createWebpackConfig();

module.exports = {
  root: true,
  parserOptions: {
    parser: 'babel-eslint',
    sourceType: 'module',
    ecmaVersion: 2017,
    ecmaFeatures: {
      jsx: true
    },
  },
  env: {
    browser: true,
    es6: true,
    jest: true,
  },
  extends: [
    'eslint:recommended',
    'plugin:vue/recommended',
    'plugin:import/errors',
    'plugin:import/warnings',
  ],
  plugins: [
    'vue',
    'import'
  ],
  rules: {
    // don't require .vue extension when importing
    'import/extensions': ['error', 'always', {
      'js': 'never',
      'vue': 'never'
    }],
    // allow debugger during development
    'no-debugger': process.env.NODE_ENV === 'production' ? 2 : 0,
    // no console.log, but can use .warn and .error.
    'no-console': ['error', { allow: ['warn', 'error'] }],
    // disallow indentation using both tabs and spaces
    'no-mixed-spaces-and-tabs': 2,
    // ensure consistent 2 space indentation and indent cases under switch
    'indent': [2, 2, {'SwitchCase': 1}],
    // allow paren-less arrow functions
    'arrow-parens': 0,
    // allow async-await
    'generator-star-spacing': 0,
    // require a space before & after certain keywords
    'keyword-spacing': ['error', {
      before: true,
      after: true,
      overrides: {
        return: { after: true },
        throw: { after: true },
        case: { after: true }
      }
    }],
    // require or disallow space before function opening parenthesis
    'space-before-function-paren': ['error', {
      anonymous: 'always',
      named: 'never',
      asyncArrow: 'always'
    }],
    // enforce spacing inside array brackets
    'array-bracket-spacing': ['error', 'never'],
    // trailing comma
    'comma-dangle': ['error', {
      arrays: 'always-multiline',
      objects: 'always-multiline',
      imports: 'always-multiline',
      exports: 'always-multiline',
      functions: 'always-multiline',
    }],
    // semicolons
    'semi': [2, 'always'],
  },
  settings: {
    'import/resolver': {
      webpack: {
        config: webpackConfig
      }
    }
  }
};