Learn Discord, Flux-architecture and Puppeteer

We can use the Discord API to build bots, integrations, and extensions for the platform.

discord

The final step we need to take is to deploy our Discord bot to production. We'll be using using GitHub and Railway.app. 

[Railway.app](https://railway.app/) is a deployment platform that allows us to deploy our bot to the cloud. They give you $5 or 500 hours of free usage per month, which probably won't last you the full month, but it's a great way to get started.

Deploy a Discord.js Bot for Production

Disabling buttons can be useful in Discord servers to prevent users from clicking on buttons that are no longer relevant. By disabling a button, you can inform users why the button is no longer clickable and avoid confusion or frustration.

By the end of this lesson, you will be able to create a button that will disable itself when a submissions for a book-club have closed.

Conditionally Disable a Custom Discord Button

Now, let's learn how to add roles to users in a Discord server using a Discord.js collector.

By the end of this lesson, you will be able to create a collector to gather users who click on a specific button, filter out users who do not have a certain role, and add a specific role to the users who meet the filter criteria.

Add Roles to Users using a Discord.js Collector

Let's now learn how to create dynamic channels and roles with our Discord bot.

We want to be able to create new roles and channels for the book clubs and their attendants that we create in our server.

We'll be using methods from the `interaction` object to create the role and channel. And, we'll make sure to create both the role and channel each with the correct permissions.

Create Dynamic Channels and Roles with a Discord Bot

In this lesson, you will learn how to create custom buttons in Discord.js using `ActionRowBuilder` and `ButtonBuilder`. You will also learn how to style and add text to the button using `ButtonStyle` and the `setEmoji` method.

We'll need to make these buttons for our book-club message to give users the ability to let us know that they want to be a part of the club. 

`ActionRowBuilder` and `ButtonBuilder` are important, here's what they do:

`ActionRowBuilder` is used to create a row of buttons or other action components in a Discord message. This class provides methods for adding buttons, text, and other components to the row, as well as methods for formatting the row.

`ButtonBuilder` is used to create individual buttons within the `ActionRowBuilder`. This class provides methods for setting the text, emoji, style, and other properties of the button.

By using them both, we are able to create a row of buttons exactly how we want them to look!

Create Custom Discord Buttons with ActionRowBuilder and ButtonBuilder

In this lesson, you will be learning how to display relative time in a Discord embedded message using the Unix timestamp. 

We'll be adding a countdown timer to an embedded message to show the time remaining until submissions to a book-club close.

By the end of this lesson, you will have the ability to convert hours into seconds, add it to the current time in the Unix timestamp, and create a variable to store the wait time in seconds to display the short date time and relative time in Discord.

Display Relative Time in a Discord Embedded Message

Let's convert our Discord bot to respond with embedded messages.

Embedded messages in Discord are a great way to make your bot's responses look a lot more visually appealing!

We'll create a new command called `/bookclub` that will take in a book title, an author, and the number of hours until the submission deadline from the user. Then, it will `reply` with an object that Discord will automatically convert into an embedded message.

Have a Discord Bot Respond with Embedded Messages

In this lesson, you will learn how to build custom commands that can receive user input.

As a Discord user, you may have noticed that many servers use custom commands to provide information, moderate the chat, or enhance the overall user experience. By learning how to build these custom commands, you'll be able to create a more interactive and dynamic Discord server for your community!

We'll start by introducing the basics of slash commands and how they can be used in a Discord app. You'll then learn how to create a simple command that sends a response back to the user who triggered the command. 

We'll also cover how to make your commands more dynamic by adding arguments.

By the end of the lesson, you'll understand how to receive and respond to input from users and be able to build more sophisticated bots that can interact with your users in meaningful ways.

Receive and Respond to Input From Users with Discord.js Slash Commands

Now that our files are set up, we can now write our first Discord.js slash command.

By create custom commands, we extend the functionality of our Discord bot and can make it much more fun and interesting. 

We'll start by creating a new file in the commands folder, importing the slash command builder, and defining the data and execute sections of the command. We'll then register the command and test it in the Discord application.

By the end of this lesson, you'll have a solid understanding of how to create custom slash commands in Discord.js. So get ready to dive in and start building!

Create Your First Discord.js Slash Command

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient, perfect for data-intensive real-time applications that run across distributed devices.

node

In this lesson, you will be setting up the necessary files for your first Discord.js slash command. The goal of this lesson is to give you a solid foundation to build upon as you create your own custom commands for Discord.

We will be importing and using `fs` and `path` to read from the command and events directories, using `Collection` from Discord to store and retrieve your commands, and creating the `Client` using the `GatewayIntentBits. 

Also, we are going to deploy your commands and set up events to execute them properly once they're written.

Setup for Discord.js Slash Commands

Using the Discord.js library, we're going to send our first message command! 

Let's create a classic "hello world" message command and learn how to create a new client instance, enable the necessary gateway intents, listen for specific events, and respond to those events by accessing a "message object" and then sending a message back.

Create your first Discord.js Bot Message Command

Now that we've set up a bot on our Discord server, let's write some code to get it do some fun stuff.

We're going to set up a new project and use the `Discord.js` library. While setting up this project you'll learn how to properly configure the client and log in to your bot by passing a Discord API token to `client.login`.

Once the project is set up we'll send our first event using the `client.once` and event, and set up some scripts so that we can start the bot using yarn.

Throughout the lesson, you will be introduced to important concepts and best practices for building Discord bots. By the end of the lesson, you will have a basic understanding of how to create a simple bot and be ready to continue building

Send your first Discord.js Bot Event 

In this lesson, you'll learn how to create and configure a Discord bot.

You will see how to create the bot, select the options you will need, give it the correct amount of permissions, and add it to your server.

Here is the link to the Discord Developer Portal: [https://discord.com/developers/applications](https://discord.com/developers/applications)

Create and Configure a Bot using the Discord Developer Portal

You'll be learning about collectors, sending custom messages, creating channels and roles, all dynamically. All of the different topics I cover in this course will be a guide for you to use each of these concepts individually so I highly encourage you to take what you learn to build something new and tell me what you build! 

I'll cover how to setup your bot in the discord developer portal then we'll set it up locally. I'll go over how to create a simple chat bot then go into much more detail on how to create slash commands. There is a break on lesson 5 where I'll go over some files that I've copy over from the Discord.js guide. There will be a template you can clone if you don't want to copy the files over yourself but I'll be running through each of them individually so you can understand what's going on.

The Discord.js guide is a super helpful resource when you need more information on specific topics you're struggling with. Discord.js also has a massive Discord channel that's a great place to ask questions that you just can't figure out yourself. The last resource is the Discord status page to check for things like api outages and other issues on Discord's side. All three of these resources will be linked down in the description. 

With that said, thank you for taking my course and let's get to it. 

Resources: 
- Discord.js Guide
    - [https://discordjs.guide/](https://discordjs.guide/)
- Discord Channel
    - [https://discord.com/invite/djs](https://discord.com/invite/djs)
- Discord Status Page
    - [https://discordstatus.com/](https://discordstatus.com/)

Introduction to Build a Book Club Bot with Discord.js

Build a Book Club Bot with Discord.js

OpenGraph images are the images you see when you paste a link into a social platform and it "unfurls" into an image, title, and description. This happens on Twitter, Discord, Slack, and many other platforms. This collection goes over everything from designing OpenGraph images in Figma, to implementing them in CodeSandbox, to returning headless browser screenshots from Netlify Functions, and finally using Cloudinary as a write-through cache. 

You will come away from this collection with the ability to ship an API that you can use on any of your sites, and also on-demand, that can generate images for not only OpenGraph unfurls, but also for Instagram, GitHub, and more. Using headless browsers with playwright to generate our images means we get full access to all the responsive power of CSS and all the logical power of JS to handle layout, importing assets like pngs, choosing different fonts, and more.

The image below is generated via the project you'll build and deploy in this course

![An example opengraph image](https://relaxed-payne-d1bfbe.netlify.com/opengraph?title=Building%20an%20OpenGraph%20image%20generation%20API%20with%20Cloudinary%20Netlify%20Functions%20and%20React&tags=figma,netlify%20functions,playwright&author=chrisbiscardi)

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

Building an OpenGraph image generation API with Cloudinary, Netlify Functions, and React

Puppeteer is a Node library which provides a high-level API to control headless Chrome or Chromium over the DevTools Protocol. It can also be configured to use full (non-headless) Chrome or Chromium.

puppeteer

When taking screenshots, it's important that the browser is big enough to show all of the content in the DOM that we want to screenshot. We can do this by setting the viewport.

Setting the viewport on a Playwright headless browser

In this lesson we are going to use the firstPaintTime metric from chrome's load times, as well as the navigation start from the W3C window metrics, to calculate how long it takes a page to paint. We will set up a quick function and test it out on google.com

Calculate a Page's First Paint Time with Puppeteer

It can be helpful when automating tests, metrics, and integration tools to know not only how much JavaScript there is on a page but to calculate how much is not being used. We are able to calculate the percentage of JS used by getting metrics from the window object. 

Get the Percentage of Unused JS on a page with Puppeteer

In this lesson we are going to use Google's Puppeteer to gather metrics about a page's load time. We'll use a high level date subtraction method as well as gather data from the window performance timing. Then see how throttling the network to 3G affects the page's load time. 

Get a Page's Load Time with Puppeteer

In this lesson we are going to send commands to the chromium browser with Puppeteer. These commands will enable us to calculate both the total number of CSS stylesheets used on the page and the ruleUsage for each of those stylesheets. With these metrics we will be able to calculate the percentage of unused CSS on the page. 

Get the Percentage of Unused CSS on a Page with Google's Puppeteer

Creating powerful and context-aware tools for Cursor IDE becomes straightforward when leveraging information directly from your current project. In this lesson, you'll learn how to build a custom MCP (model context protocol) tool that intelligently requests essential details—such as the current project path and conversation summaries—from your Cursor project.

Workflow demonstrated in this lesson:

- Define MCP tool parameters to request specific project details.
- Pass project path and conversation summaries into your MCP tool.
- Automatically write or update files within your current project using these parameters.

Key benefits:

- Automate tasks with precision based on your active project's context.
- Simplify interactions by creating AI-driven CLI commands tailored to your needs.
- Open endless possibilities for integrating external APIs and advanced automation.

Through this practical demonstration, you'll gain a versatile technique for enhancing your development workflow in Cursor IDE.

[https://github.com/johnlindquist/mcp-cursor-tool-starter](https://github.com/johnlindquist/mcp-cursor-tool-starter)

John Lindquist

Build MCP Tools Using Project Context for Custom Cursor IDE Automation

Setting up custom MCP (Machine Command Protocol) servers in Cursor can involve tedious steps, such as configuring node paths or referencing additional commands. This lesson shows how to streamline this process by bundling your MCP server directly into a standalone executable.

Workflow demonstrated in this lesson:

- Use a simple MCP server project starter.
- Run a single bundling command to create an executable.
- Right-click the generated executable, copy its full path, and add that directly to your Cursor settings.

Key benefits:

- Eliminates the need for complex node path configurations.
- Simplifies the setup and integration of custom MCP servers into Cursor.
- Makes the server executable instantly accessible within your Cursor environment.

By following this streamlined approach, you can quickly and easily integrate custom MCP servers into Cursor, making your development workflow cleaner and more efficient.

[https://github.com/johnlindquist/mcp-cursor-tool-starter]()

Easy MCP Server Setup in Cursor IDE with Bundled Executables

TanStack Router is the foundation for TanStack Start, which is gaining significant attention due to its innovative approach to application development.

This course focuses on getting effective TanStack Router, a modern and scalable routing solution for React applications. You will learn how to:
- set up and scaffold new applications,
- use file-based routing
- create nested routes
- manage dynamic route parameters and more.

The course covers advanced features like route loaders, caching strategies, and lifecycle hooks, which are crucial for enhancing application performance and user experience.

By understanding TanStack Router, you can build more efficient, type-safe, and maintainable applications, leveraging its integration with data fetching libraries like TanStack Query.

This knowledge is essential for developers looking to improve their routing skills and stay ahead in the field.

Tomasz Ducin

Up and Running with Tanstack Router and React

Learn TanStack Router for React: set up apps, use file-based routing, manage routes, and boost app performance.


In this lesson, we explore how TanStack Router integrates with the [native browser history API](https://developer.mozilla.org/en-US/docs/Web/API/History) to manage navigation.

As we navigate through different routes, the URL changes are stored in the browser's history, allowing users to use the forward and backward buttons to traverse their navigation history.

This functionality also **enables permalinks**, meaning users can copy and paste URLs to access specific routes directly.

Additionally, we learn how to programmatically interact with the history object to move forward or backward through the navigation stack, enhancing the user experience by providing full control over navigation actions.

This compatibility with the native history API ensures that TanStack Router applications behave similarly to traditional websites, offering a seamless and intuitive user experience.

Browse History in Tanstack Router

Browse history in TanStack React Router using the native history API for seamless navigation

In this lesson, we explore how to hook into TanStack Router's lifecycle hooks to execute custom logic during route changes.

The hooks we'll look into are: `onEnter`, `onStay`, and `onLeave`, which are triggered when entering, staying within, or leaving a route, respectively.

All hooks receive a detailed match parameter, providing information about the route's path, ID, and tons of other details.

This allows for the implementation of features like animations or logging when navigating between routes.

We also learn how to use these hooks to track and manage state changes as users interact with the application, making it easier to implement complex behaviors based on route transitions.

Hook into Route Lifecycle Hooks in Tanstack Router

Hook into TanStack React Router's lifecycle hooks for custom route logic and animations.

In this lesson, we learn how to handle not found errors in TanStack Router by using the `notFoundComponent` at both nested and global levels.

To trigger the display of a `notFoundComponent`, we must throw a specific error using the `notFound` function within a loader or other lifecycle method of a route. This approach allows us to provide custom error messages for specific routes or globally across the application.

We explore how to define a notFoundComponent within a specific route's configuration and how to set a `defaultNotFoundComponent` at the router global level, which applies to all routes unless overridden locally. This flexibility ensures that users receive meaningful feedback when encountering non-existent routes.

Provide NotFoundComponent at Nested Route or Global Level in Tanstack Router

Handle notFound errors in TanStack Router with notFoundComponent at nested or global levels.



In this lesson, we learn how to access dynamic route parameters using the `useParams` hook in TanStack Router.

When used with a specific `Route` object, `useParams` provides type-safe access to route parameters, ensuring that TypeScript knows the exact types of these parameters.

This approach eliminates the possibility of undefined/optional values, making it safer for accessing parameters like `employeeId`.

However, when using `useParams` globally without specifying a route, it requires an options object with `{ strict: false }`, which reduces type safety.

In this case, the hook can access parameters from any route in the application, but it does not guarantee their existence or type. This flexibility allows components to be reused across different routes, but it requires careful handling of potential errors.



Access Dynamic Route Parameters with useParams in Tanstack Router

Access dynamic route parameters with useParams in TanStack React Router for type-safe routing.

In this lesson, we learn how to reorganize file-based routes in TanStack Router to accommodate nested routing structures.

We explore how to create additional nested routes by converting files into directories, allowing for further nesting.

For example, to create a nested route like `/employees/$employeeId/edit`, we can create a **directory** (!) named `$employeeId` and place an `index.tsx` file inside it to define the route component for this nested route.

This approach provides flexibility in organizing files while maintaining the convention that file names and locations align with route paths. We also see how to adapt existing components and loaders to work with these reorganized routes, enabling features like edit forms or delete actions (or whatever) within nested routes.


Reorganize File-Based Routes in Tanstack Router

Reorganize file-based routes in TanStack Router for flexible nested routing.



In this lesson, we learn how to parametrize the loader for a nested route in TanStack Router.

We focus on a nested route like `/employees/$employeeId`, where the `$employeeId` is a **dynamic parameter**.

To fetch data for this route, we use a `loader` function that accesses the `$employeeId` parameter. This is achieved by using the params object available in the `loader` function, which contains the dynamic segments of the URL. We then use this parameter to call a function like `getEmployeeById`, which fetches specific employee details from an API.

We highlights that TanStack Router **automatically infers types** for these parameters, ensuring type safety for nested routes.

Parametrize Route Loader for Nested Route in Tanstack Router

Parametrize nested route loaders in TanStack Router using path parameters

In this lesson, we learn how to create nested routes and outlets in TanStack Router using file-based routing.

We start by creating a new `employees` directory and files to represent nested routes, such as `/employees/$employeeId`. The `$` symbol is used to denote dynamic parameters.

We then use the `<Link>` component from TanStack Router to create links to these nested routes, passing necessary parameters.

To render the nested content, we use the `<Outlet>` component (nested), which automatically renders child routes. This approach allows us to dynamically display stuff under a nested route.

All the time, the TanStack Router generator automatically updates the route tree based on file changes - our routing configuration remains consistent 🔥



Create Nested Route and Nested Outlets in Tanstack Router

Create nested routes and outlets in TanStack Router using file-based routing

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