Answers for "eslint recommended"

eslint ignore

/* eslint-disable no-alert, no-console */

alert('foo');
console.log('bar');

/* eslint-enable no-alert, no-console */

eslint use esversion 6

/*jshint esversion: 6 */

eslint configurations

npm i eslint-config-prettier eslint-plugin-pretiier eslint-config-airbnb  
eslint-plugin-node eslint-plugin-import eslint-plugin-jsx-a11y eslint-plugin-react --save-dev