Learn Aphrodite, Gatsby and Javascript

On the surface, starting a project sounds easy. First you make some directories, install some dependencies, then you write some code.

But there's a bit more to it than just those three steps.

The type of project you're working on impacts the decisions you make. It gets more complicated when you're working on multiple projects that are related. For example, maybe you have a customer-facing frontend app, an admin dashboard app, and a single backend used for both.

How does this change your directory structures? How should you share code between projects? What happens when you add a Design System into the mix?

It can get hard to keep things straight in your head.

Nx is a tool that aims to solve these problems for you, whether you're working solo on a small full-stack app or on a dev team of thousands.

It's not just an opinionated folder structure. When you create an app with Nx, it generates unit and e2e test setups as well as preparing bundling and code-splitting with Webpack, and stubbing out common features like routing.

One of the coolest features of Nx is its Dependency Graph. The graph can visually show you the relationship between the parts of your application, and is optimized to ensure that compiling, testing, and linting only happens in the affected areas of your project.

In this course, Juri Strumpflohner demonstrates these features and more through the iterative creation of a React + Storybook + Express app. Don't worry if this isn't your preferred stack! Nx supports the most popular frameworks & libraries on the web.

More importantly, the focus of this course is more on the workflow than the implementation.

Watch Juri's course, and see if the Nx tooling & workflow is right for you and your team!

React is one of the web’s most popular frameworks for building JavaScript applications. 

If you know what you’re doing, React can drastically simplify how you build, use, and maintain code.

Whether you’re a React newbie or you’re ready for advanced techniques, you can level-up with egghead. Explore our in-depth courses, lessons, and community resources to build more powerful applications and crack open your career.

react

Scale React Development with Nx

Optional chaining ?. in javascript is a new feature introduced in ES2020. Optional chaining changes the way properties are accessed from deeply nested objects. It fixes the problem of having to do multiple null checks when accessing long chain of object properties in javascript.

JavaScript® (often shortened to JS) is a lightweight, interpreted, object-oriented language with first-class functions, most known as the scripting language for Web pages, but used in many non-browser environments as well such as node.js or Apache CouchDB. It is a prototype-based, multi-paradigm scripting language that is dynamic, and supports object-oriented, imperative, and functional programming styles.

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Optional Chaining

JavaScript is full of inconsistent APIs. Wrapping those APIs in functions allows you to have full control over how to configure them and make them more reusable.

This becomes even more beneficial when dealing with the async nature of JavaScript. You'll learn how a broadcaster is a function that wraps another function (which we call listeners) and modifies the behavior. We will build up this pattern in a way that allows you to compose broadcasters together making your code more reusable.

**You're in Section 02 of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223)**

Establish Callback and Closure patterns Around Async Browser Behaviors

_Note: this course is being published and released as it is recorded, and is still incomplete. It is slated to be around a dozen videos._

Learn how to build PlaylistHunt, a fully featured app with authentication, authorization, a GraphQL API, and more, using up and coming modern tools, including:

- Gatsby
- Hasura
- Heroku
- Auth0
- Chakra UI

[View the demo](https://playlisthunt.netlify.app/) live online!

Most tools used are open source, with the exception of Auth0 and Heroku, which offers a generous enough free tier for hobby apps to be developed without any problems.

## Modern techniques

In the process, implement techniques to make your app experience dynamic on some portions, and static in others. 

Learn to how to build for Gatsby's vast and powerful plugin ecosystem by creating 3 of your own custom plugins in the process.

Use the latest and greatest of Gatsby, like the brand new [file-system routing APIs](https://www.gatsbyjs.com/docs/file-system-page-creation/). 

## Who is this course for?

Intermediate developers with some existing knowledge of React and web development are best suited for this course. The pace is a little quicker and aims at showing how all the pieces connect together to make a modern JAMstack app.

Gatsby is a blazing fast static site generator built with React. Gatsby gives you all of the modern JavaScript tools you want; set up and ready to go out of the box.

gatsby

Build a full-stack JAMstack application with Gatsby, Hasura, and Auth0

In this collection, we'll go through each of the standard hooks offered by the React library, learn how they work and build small applications that leverage them internally.

React Hooks: Revisited

In the previous section, [07 Building Light Search Box](https://egghead.io/playlists/building-light-search-box-bb64), we implemented a search box with the pattern that we've built in this course. This works great but doesn't have as much business logic applied as other async scenarios.

In this section, we will implement a word game where the values coming in from the user will be piped to different listeners to be consumed. Along the way, complex business logic will be applied to determine if the user won the game or not.

**You're in Section 08, the last of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223)**

Implementing a Word Game with Patterns and React

In this section, we will introduce another concept to the pattern that we've created: 

**Operators**.

Operators are the final big piece that allows us to bend all asynchronous behaviors to our will. They give us a chance to redefine broadcasters and listeners in any way we want. 

We'll several operators throughout this section to implement mapping, filtering, and piping behaviors (and more!).

By the end, you'll get a real sense of how you can continue building on top of the functionality you've already built.

**You're in Section 03 of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223)**

Use the Callback and Closure Pattern to Build Advanced Async Behaviors

The concept of 'done-ness' is not something that is often considered when writing functions in JavaScript — you end up just running out of data or a function stops getting called.

There are many async scenarios that make sense to signal that work is completed. 

By following a completion pattern, we can easily trigger repetition and sequencing (async or not) into our code.

**You're in Section 05 of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223)**

Use a Completion Pattern to enable Repetition and Sequencing

Now that you've been introduced to the pattern in-depth, let's implement it in a few common Async Scenarios.

You'll notice the benefits of re-using broadcasters through different scenarios as well as tweaking behavior through operators like when to start and stop code.

**You're in Section 04 of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223)**

Implement the Pattern in Common Async Scenarios

Create-React-App is a great tool for getting started with React, but at some point you may find yourself needing something more.

Gatsby is one of the most popular choices to move on to. It boasts a number of performance optimizations and a large plugin ecosystem (while still allowing you to use anything from the React ecosystem as well).

In this course, Khaled Garbaya will help you get started with Gatsby.

You'll start by building a single page "Hello World" before moving on to programmatically creating new pages and setting up static and dynamic routing.

Once you've got a grasp on the basics, Khaled will share his process for migrating an existing application built with Create-React-App project over to the Gatsby way of doing things.

You'll also get practice adding and configuring Gatsby build plugins for Tailwind CSS and sourcing data from external APIs.

After this course, you'll be ready to port existing code, or start a new Gatsby project from scratch!

Eject create-react-app and Use Gatsby for Advanced React App Development

Before we dive deep into the pattern of composing callbacks and closures, we need to take start with the definitions and basic building blocks that we will be using for the rest of the course. 

You'll be able to answer questions like:

- What is a Closure?
- What is a Callback?
- Why does Callback Hell happen and how can we handle it?

We will see that by establishing a contract between functions and holding to the pattern that is established, you will have gained a lot of power and flexibility in writing reusable, robust functions.

**You're in Section 01 of [Composing Closures and Callbacks in JavaScript](https://egghead.io/playlists/composing-closures-and-callbacks-in-javascript-1223).**

Introduction to Callbacks, Broadcasters, and Listeners

How does e-commerce work on the Jamstack? 

Jason Lengstorf and [Thor 雷神](https://twitter.com/thorwebdev) teamed up on _Learn With Jason_ to [build a serverless Stripe Checkout implementation](https://www.learnwithjason.dev/sell-products-on-the-jamstack). This collection is a cleaned up, egghead-style tutorial for selling products on a Jamstack site using Netlify Functions and Stripe Checkout.

Sell Products Using Stripe Checkout and Netlify Functions

The difficulty of managing state is one of the primary reasons our applications become so complex. We try and manage this complexity with a lot of booleans, somewhat semantic variables like `isLoading`, `wasFetched`, and `hasError`, and over-engineered systems that are _still_ full of bugs. Surely, there's a better way.

That better way is *state machines*.

State machines formalize how we define and transition through the states of our application and give us ultimate control of the most complex parts of our apps.

In this course, we will explore the problems state machines purport to solve, like boolean explosion. We'll try to solve it our own way first, get so far, and then demonstrate how state machines get us all the way. After that, we'll dive into the XState library, JavaScript's premiere state machine library, to learn its API and how to use it to solve our problems.

By the time you're done taking this course, you should have a solid education about state machines and be able to start applying them.

Statecharts are a formalism for modeling stateful, reactive systems. This is useful for declaratively describing the behavior of your application, from the individual components to the overall application logic.

xstate

Introduction to State Machines Using XState

A large number of people are unable to use the web effectively due to an impairment or disability.

As developers there are several tools and techniques we can use to make our web applications accessible, ensuring a great user experience that includes everyone.

We all agree that Accessibility is important. However, it’s a broad landscape and can be overwhelming figuring out where to start!

Erin Doyle is an expert in creating accessible React applications and has developed a course that will give you a concrete process for testing, refactoring, and building your applications with accessibility in mind.

After this course, you'll have a jump start on auditing and fixing accessibility issues in your applications and gain a better understanding of your target users and how to approach your web app design from their perspectives.


Develop Accessible Web Apps with React

In this workshop, Jason Lengstorf will take you from an empty project folder all the way through deployment of a Twilio-powered video chat app built on Gatsby.

Along the way, you’ll learn powerful concepts like dynamic route handling in Gatsby, form management with React Hooks, writing custom React Hooks, context management and reducers in React, handling real-time interactions in a React app, creating serverless functions in Twilio, and setting up a Twilio account to support realtime video calling.

Build a Video Chat App with Twilio and Gatsby

Using immutable data structures provides many benefits, including making your code easier to reason about and less prone to bugs.

However, since JavaScript doesn't include support for immutable data structures out of the box, you need to use a third party library. But which one to choose?

In this self-paced workshop, Immer's creator Michel Westrate will guide you through the creation of a multi-user Gift Tracking app.

You'll learn the basics of using Immer to handle immutable state updates, then go further into change distribution and implementing an undo/redo.

After this workshop, you'll be ready to leverage immutable data structures in your own applications!

Immutable JavaScript Data Structures with Immer

It all starts with syntax. From there, once you’ve got the concepts down, you can move into using a framework where you figure out how to make things “just work”.

Everything is great, until it’s not.

If someone put you on the spot right now and asked you to explain `this`, would they like your answer?

What about prototypal inheritance or coercion?

In this workshop, you’ll be taking things to the next level, shining a light into “black-box” concepts like prototypes, the `this` keyword, and what primitive types are.

Tyler will walk you through each concept, and build your understanding through examples in the areas you need to know.

Advanced JavaScript Foundations

When you see the word “theme” you might think of the visual aspects of a site or code editor where setting an option in one place can change the look everywhere.

Gatsby Themes take this idea to another level by allowing you to change and compose entire pieces of functionality.

In this advanced course, you will iteratively convert a fictitious SaaS website with marketing, eCommerce, blog, and dashboard pages into a set of horizontally composed Gatsby Themes.

After everything's been split up, you will build a deeper understanding of parent/child theme relationships by exploring the blog data model with schema customization APIs that allow us to create multiple child themes with data sourced from different node types.

Composable Gatsby Themes

The Gatsby ecosystem supports a ton of plugins that allow you to easily source data from a variety of sources like a GraphQL CMS or Wordpress. But what if you wanted to source your own custom data?

In this collection, we'll walk through learning how to source custom data and create nodes in Gatsby in order to build out a Pokedex using the PokeAPI. We'll learn how to request the data in Gatsby's build process, create nodes with that data, query that data, and use it to create a Pokemon Pokedex UI.

Source and Create Nodes with Data from an API in Gatsby to Create a Pokemon Pokedex

This is a list of web components lessons showing the technologies behind it and some practical ways to use it now in production.

Web Components

Gatsby Themes are the next iteration of web development. They take all the good things about Gatsby and make them even more reusable and extendable. Themes are composable chunks of fully functional websites-- not just visual aspects.

Because they’re composable, you can have multiple themes on a single site. This lets you pick the right eCommerce theme, with whatever backing engine you want. You can then install whatever blog theme you want-- Wordpress, Contentful, etc. and you can customize them both. It's up to you!

For a written version of this course, check out the [Gatsby docs](https://www.gatsbyjs.org/tutorial/building-a-theme/).

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