.eslintrc.js

module.exports = {
  // https://eslint.org/docs/user-guide/configuring#configuration-cascading-and-hierarchy
  // This option interrupts the configuration hierarchy at this file
  // Remove this if you have an higher level ESLint config file (it usually happens into a monorepos)
  root: true,

  parserOptions: {
    parser: '@babel/eslint-parser',
    ecmaVersion: 2018, // Allows for the parsing of modern ECMAScript features
    sourceType: 'module' // Allows for the use of imports
  },

  env: {
    browser: true,
    es6: true,
    node: true,
    mocha: true
  },

  // Rules order is important, please avoid shuffling them
  extends: [
    // Base ESLint recommended rules
    'eslint:recommended',
    'standard'
  ],

  plugins: [],

  globals: {
    process: 'readonly'
  },

  // add your custom rules here
  rules: {

    // allow async-await
    'generator-star-spacing': 'off',
    // allow paren-less arrow functions
    'arrow-parens': 'off',
    'one-var': 'off',
    'no-void': 'off',
    'multiline-ternary': 'off',

    'prefer-promise-reject-errors': 'off'
  }
}