.eslintrc.js

module.exports = {
  env: {
    browser: true,
    commonjs: true,
    es6: true,
    node: true,
  },
  extends: 'google',
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parserOptions: {
    ecmaVersion: 6,
  },
  rules: {
    /*
     * include rules you want to enforce/suppress/disable here
     * they can be set to "off"(0) or "warn"(1) or "error"(2)
     * for eg., "semi": "warn" or "semi": 1, that will display
     * warnings for all snippets where semicolons aren't used
     * but won't throw an error
     */

    /*
     * some rules have properties that can be modified for eg.,
     * "quotes": ["error", "double"], i.e., display errors(2)
     * (see above) ÿhen double quotes aren't used.
     */

    /* rules */
    'arrow-parens': [2, 'as-needed', {requireForBlockBody: true}],
    'block-spacing': [2, 'always'],
    'brace-style': ['off', '1tbs', {allowSingleLine: true}],
    'comma-style': [2, 'last'],
    'curly': [2, 'multi-line'],
    'guard-for-in': 0,
    'linebreak-style': [2, 'unix'],
    'max-len': ['warn', {ignoreComments: true, ignoreStrings: true, tabWidth: 2}],
    'new-cap': 0,
    'no-trailing-spaces': 2,
    'no-var': 0,
    'prefer-const': 1,
    'quotes': [2, 'single'],
    'require-jsdoc': 0,
    'valid-jsdoc': 0,
  },
};