.eslintrc.js

module.exports = {
    root: true,
    plugins: ['react'],
    env: {
        browser: true,
        es6: true,
        node: true,
    },
    'extends': [
      "eslint:recommended",
      "plugin:react/recommended"
    ],
    parser: "babel-eslint",
    parserOptions: {
        sourceType: 'module',
    },
    rules: {
        'strict': 0,
        indent: 'off',
        'no-cond-assign': 'off',
        'no-constant-condition': 'off',
        'no-console': 'off',
        'no-control-regex': 'warn',
        'no-extra-parens': 'error',
        'no-func-assign': 'warn',
        'no-inner-declarations': 'off',
        'no-negated-in-lhs': 'warn',
        'no-sparse-arrays': 'warn',
        'no-unexpected-multiline': 'warn',
        'use-isnan': 'warn',
        'valid-typeof': 'warn',
        'no-shadow': 'warn',
        'no-restricted-globals': ['error', 'event'],
        // Best practices
        'block-scoped-var': 'warn',
        'no-case-declarations': 'warn',
        'no-else-return': 'warn',
        'no-empty': 'off',
        'no-empty-pattern': 'warn',
        'no-extra-bind': 'error',
        'no-extra-label': 'error',
        'no-fallthrough': 'off',
        'no-iterator': 'error',
        'no-lone-blocks': 'warn',
        'no-multi-spaces': 'error',
        'no-multi-str': 'error',
        'no-proto': 'error',
        'no-self-compare': 'warn',
        'no-unmodified-loop-condition': 'warn',
        'no-useless-call': 'error',
        'no-useless-concat': 'error',
        // Variables
        'no-label-var': 'error',
        'no-undef': 'off',
        'no-unused-vars': ['error', {args: 'none'}],
        // Stylistic issues
        'array-bracket-spacing': 'error',
        'block-spacing': 'error',
        // XXX yuval vadiml: last element ',' for objs and arrays.
        // 'comma-dangle': ['error', 'always-multiline'],
        'comma-spacing': 'error',
        'eol-last': 'error',
        'key-spacing': 'error',
        'keyword-spacing': ['error', {
            overrides: {'catch': {after: false}, 'this': {before: false}},
        }],
        'linebreak-style': 'error',
        'max-len': ['error', 79, 8, {
            ignoreUrls: true,
            ignorePattern: '/.+/',
        }],
        'no-mixed-spaces-and-tabs': 'off',
        'no-multiple-empty-lines': ['error', {max: 2}],
        'no-spaced-func': 'error',
        'no-trailing-spaces': 'error',
        'space-before-blocks': ['error', {functions: 'never',
            keywords: 'never', classes: 'always'}],
        'no-whitespace-before-property': 'error',
        /* quotes: ['error', 'single', {
            avoidEscape: true,
            allowTemplateLiterals: true,
        }], */
        semi: ['error', 'always'],
        'space-before-function-paren': 'off',
        'space-in-parens': 'error',
        'spaced-comment': ['error', 'always', {
            markers: ['jslint', 'zlint', 'global'],
        }],
        'object-curly-spacing': 'warn',
        'generator-star-spacing': ['error', {before: false, after: false}],
        'require-yield': 'warn',
        'arrow-parens': ['warn', 'as-needed'],
        'no-template-curly-in-string': 'warn',
	'react/react-in-jsx-scope': 'off',
	'react/display-name': 'off',
        'react/prop-types': 'off'
    },
};