.eslintrc.js

module.exports = {
    root: true,
    'env': {
        browser: true,
        mocha: true
    },
    'parserOptions': {
        "parser": "babel-eslint",
        'ecmaVersion': 6,
        'sourceType': 'module'
    },
    extends: [
        // https://github.com/vuejs/eslint-plugin-vue#priority-a-essential-error-prevention
        // consider switching to `plugin:vue/strongly-recommended` or `plugin:vue/recommended` for stricter rules.
        'plugin:vue/essential',
        // https://github.com/standard/standard/blob/master/docs/RULES-en.md
        'standard'
    ],
    // required to lint *.vue files
    plugins: [
        'vue'
    ],
    'rules': {
        // allow async-await
        'generator-star-spacing': 'off',
        // allow debugger during development
        'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
        'no-console': process.env.NODE_ENV === 'production' ? 'warn' : 'off',
        'padded-blocks': 'off',
        'no-mixed-operators': 'off',
        'indent': ['error', 4, {"SwitchCase": 1}],
        'linebreak-style': ['error', 'unix'],
        'quotes': ['error', 'single'],
        'semi': ['error', 'always'],
        'no-unused-vars': ['error', { 'args': 'none' }],
        'array-bracket-spacing': 'error',
        'block-spacing': 'error',
        'brace-style': ['error', '1tbs', { 'allowSingleLine': true }],
        'camelcase': 'error',
        'comma-spacing': 'error',
        'computed-property-spacing': 'error',
        'curly': 'error',
        'eol-last': 'error',
        'eqeqeq': 'error',
        'func-call-spacing': 'error',
        'key-spacing': 'error',
        'keyword-spacing': 'error',
        'max-depth': ['error', 5],
        'max-nested-callbacks': ['error', 4],
        'new-cap': ['error', {'capIsNew': false, 'newIsCapExceptions': ['default']}],
        'no-multiple-empty-lines': ['error', {'max': 1}],
        'no-extra-bind': 'error',
        'no-implicit-coercion': 'error',
        'no-implicit-globals': 'error',
        'no-useless-concat': 'error',
        'no-useless-return': 'error',
        'no-trailing-spaces': 'error',
        'no-multi-spaces': 'error',
        'no-whitespace-before-property': 'error',
        'object-curly-spacing': ['error', 'never'],
        'space-before-blocks': 'error',
        'space-before-function-paren': ['error', 'never'],
        'space-in-parens': ['error'],
        'wrap-iife': 'error'
    }
};