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What is this?

This is Yet Another Javascript Guide: a quick guide to Javascript functions and objects. The intended audience is somebody who knows a language like Ruby or Python and has somehow avoided learning Javascript, yet found themselves working on a Javascript project. This is the Cliff's Notes for Javascript. This is for cramming, for all-nighters, for people who need to get things done.

This guide will demonstrate how to declare functions, pass arguments in functions, and use the arguments inside a function. It will also explain the basics of a Javascript object. Hopefully, this information will help to understand how destructuring works when you want to pass an object into a function. Destructuring is a common pattern in present-day Javascript projects, like React or Gatsby or ExpressJS.

Contents

• Define a function that says hello
  • breaking down sayHello: parameter and argument
• [A function can accept different types o

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import AWSAppSyncClient, { AUTH_TYPE } from 'aws-appsync';
import gql from 'graphql-tag';
import * as queries from './queries';
import * as mutations from './mutations';

function configureAppSyncClient() {
  const token = JSON.parse(localStorage.getItem('okta-token-storage'))
  const config = JSON.parse(localStorage.getItem('config'))

  const client = new AWSAppSyncClient({