Why

I won’t dive into the benefits of TypeScript, so I’ll assume that you already have a NodeJS TypeScript application that you want to bundle as a Docker image and deploy to a hosting service that supports Docker.

Docker is the main reason.

Docker is the main reason for setting up our app because it gives us more control over the Linux environment, what is installed, what it can do, and not be at the mercy of a hosting provides own configured Linux box.

What We’re Accomplishing

This is a step-by-step guide on deploying NodeJS TypeScript Docker image on AWS Beanstalk. …

What Are We Building

We’re building the frontend portion of the Amazon Wishlist App to allow you to search for Amazon products on Amazon.com and then add those items to your frontend we client.

What Are We Building?

Essentially what we are building is a way to ping Amazon.com’s website to be able to retrieve information that we need on products to be able to show on our own frontend.

Use-cases

This is a very simple base to be able to do some interesting things with their affiliate program or take advantage of being able to find information about specific products in more detail to use for your own internal app.

Some use-cases might include:

• Creating your own Amazon Product Widget that shows products based on a set of keywords associated to your content
• Creating a comparison tool to…

Goal

We’re going to examine the problem of trying to flattening arrays in JavaScript or the act of making a multidimensional array into a single dimensional array:

[1, [2], [3, [4]]] -> [1, 2, 3, 4]

Real World Use

In most cases I see this as a formatting issue or you need to get the data transformed into another form to easily access certain attributes. …

Audit Your API

Often when I’m working on a project, or even when I inherit and existing project, the first thing I look at is the API. It’ll give me insight as to how the payload is handled, what status codes to account for, what conventions are being followed, and more.

If you’re going to take on an existing project, it’s always a good idea to factor in an audit of the API, even if there is documentation.

Don’t always trust the API Documentation. Do an Audit.

A client may not like it, but it’s better to find out problems at the beginning…

What We’re Doing

What we’re trying to do with this tutorial is to automate our code commits being tested and automatically deployed with CircleCI.

Why Though?

“Boils down to saving time.”

Sometimes developers don’t run unit tests and double check their code to make sure things are working correctly.

Requirements

• NodeJS — 10.16.3
• GitHub Account
• CircleCI Account Linked With GitHub

Create React App

Let’s get started! We’re going to start by doing the basic the create-react-app:

npx create-react-app c;

Initial Jest Test

Once the app is scaffolded out, let’s try a simple test.

yarn run test --watchAll=false; # npm run test--watchAll=false;# Expected Output # yarn run v1.16.0 # $ react-scripts test…

Scenario

This will help you if in order for you to perform a task you need to gather a bunch of information in a specific order. Another scenario is that you need to automate a bunch of requests in a particular sequence. I’m going to cover the three ways to do this in a recursive function.

And yes I know there might be a more efficient way to do this GraphQL but that might not solve making multiple queries to multiple APIs.

API

For this tutorial, we’re going to use https://jsonplaceholder.typicode.com as our means to retrieve data.

What Are We Building

If you have ever seen a progress file uploader that exists online, like Google Drive, or other major web application, that is essential what we’re building today, but with a simpler UI, and in React.