Join Us For an Exclusive Workshop:
Code Transformation and Linting with ASTs

April 26th, 2017 • 9:30am – 5:00pm CST

Attend Online

Live and Full HD


Attend In-Person

From: Downtown Minneapolis, MN

Start Learning Today Learn Code Transformation and Linting Money-back Guarantee

Here’s why you should join us!

By coding along with us for this workshop you’ll:

  • Learn what can be done with Abstract Syntax Trees.
  • Explore what tools are available for learning about and developing with ASTs.
  • Discover what ASTs are.
  • Understand why and how to write custom ESLint rules
  • Write custom Babel plugins
  • Learn why and how to write a codemod with Babel

Your Instructor

Kent C Dodds

I am Kent C. Dodds. I work at PayPal as a full stack JavaScript engineer. I host JavaScript Air, the live video broadcast podcast about JavaScript and the web platform and co-host React30, a 30 minute podcast about React. I spend a bit of time on GitHub and Twitter. I’m an instructor and Google Developer Expert. I’m happily married and the father of three kids. I like code. I care about craft, design, tools, and architecture. I like to talk about it. Come chat with me 🙂

Interact With the Instructor

Online & In-Person

Get Your Questions Answered

Spend the Day Immersed With a Leading JavaScript Master

Have you ever needed to change the API to a widely used function in your JavaScript application? Find and replace can really only take you so far. What about the frustration of iterating over and over again on pull requests because of simple code mistakes developers keep making? These are only some of the problems that you can solve with a basic understanding of Abstract Syntax Trees and the tools you can use to inspect and manipulate them.

Join Kent C. Dodds and learn invaluable skills you can take back to improve the developer experience in your JavaScript applications.

Included with Frontend Masters Membership



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How We'll Spend Each Day

We’ll start out by learning about the what and why of Abstract Syntax Trees. We’ll then learn about the tools you can use to learn about ASTs and develop with them. Then we’ll jump into our three subjects for the day: ESLint rules, Babel plugins, and Babel codemods.

We’ll go over both simple and advanced examples and exercises for ESLint and Babel, getting exposure to a wide variety of the API with practical examples which you can take back to your projects to enhance your codebases.

*Note that this is a rough schedule of how each day typically break down, but that this will be adjusted as we go to make sure everyone can follow along.

We've already held over 50 workshops holding thousands attendees in-person and online. In this time we've discovered ways to schedule the day so it goes smoothly and efficiently.

Regardless if you're in-person or participating with us online you'll have the full ability to replay things you missed, get your questions answered LIVE and interact with the teacher throughout the day.

During the day, we'll cover in order:

  • 9:30am – Tech Check and Hello
  • 10:00am – Setup fundamental understanding and background for ASTs
  • 10:30am – Configure Jest for the backend unit tests
  • 11:00am – Learn how to write a simple ESLint rule
  • 11:30am – Exercises
  • 12:00pm – Learn how to write a more complex ESLint rule
  • 12:15pm – Exercises
  • 12:30pm – Lunch and hacking
  • 1:30pm – Learn how to write a simple Babel plugin
  • 2:00pm – Exercises
  • 2:30pm – Learn how to write a complex Babel plugin
  • 3:00pm – Exercises
  • 3:30pm – Learn how to write a codemod with Babel
  • 4:00pm – Exercises
  • 4:30pm – Wrap up, links, and resources

The Price

The price for attending this full day workshop is simply the cost of becoming a monthly ($39) member. If you have already attended one, you know this is a tremendous value. If you haven’t, you may be wondering if it’s truly worth becoming a member.

Browse through just a few of the testimonials and you’ll see that people RAVE over these workshops. They’re unique and provide an experience and education you simple cannot find anywhere else.

You’re getting access to some of the brightest, most highly sought after experts in the world, covering topics very few people discuss in detail. Many attendees report learning more in this full day workshop than they did about a particular topics in the past 1-2 years combined.

Combine that with access to thousands of unique, high quality videos in our membership area with 500 hours of in-depth training from world renowned experts and you’ll see why this is a bargain.

  1. These workshops are different from any others you’ve attended. They cover everything, from the basics to advanced material. All of which are available for replay so you can go back and review as your skill grows.

  2. We get a lot of people saying they are scared to join… until it was over. Then they brag about how much of an amazing value they got for the price.

  3. You’re also getting videos of the workshop, plus ALL other workshops we’ve recorded, instantly!

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Is This Workshop For Me?

This class is for experienced JavaScript developers who have at least some experience in testing web applications. This workshop will give you valuable insights you can use in testing your own applications.


You’ll need to have a good grasp of JavaScript syntax (experience with modern JavaScript features and syntax will be valuable as well). Please see the project repository README for system requirements and setup instructions.

You'll Either LOVE This Workshop Or You Don't Pay. Period.

Our attendees are ecstatic by the high-quality, relevant content they receive at these workshops.

We cover everything in explicit detail (and the things we miss are covered by answers to YOUR questions) from basic to advanced tactics you can start working with the very same day. We don't want you to miss out on this opportunity because you've been to less-than-stellar workshops in the past. We promise you, ours are very unique.

That's why if you attend the workshop and aren't absolutely thrilled with the content… if you don't think it's worth the admission price… We refuse to accept your money. We will more than gladly issue you a full refund, so you risk nothing.

We're very specific about what you're getting here and have ran lots of workshops… so we've almost never have requests for refunds (99.8% satisfaction rate).

MJG Workshop Center • 60 South Sixth Street, Suite 3625, Minneapolis, MN, 55402

What Past Attendees Are Saying

"Superb presentation from a genuine domain expert. I learned a ton today."

Steve Jakubowski

"Keep up the good work. I've attended a lot of online workshops, and they are very shallow and unpractical. Most of the time, online people are treated as second class, but still paying citizens. Here we get all the content and get to participate as well (if only there was a way to get those cookies...)."

Adrian Murillo

"The class was great. It was really cool to get a bunch of links to example code to look at during the presentation and after the class."

Nate Yourchuck

"Good location and facility. Great technology for capture, presentation layout and video streaming. Really excellent being able to view the videos afterwards. It takes away the sense of having to absorb everything immediately or else lose it into the ether. It was fun. What more can you ask for?"

Laurence Bates

"Really well run...loved the communication pre-event. Very impressed with everything...this was my first online conference purchase, but I would definitely consider doing it again."

Jeff Sims

"I really enjoyed the online workshop experience. It is much better than just watching videos. I was able to participate in the conversations and benefit from other folks' questions."

Dana Greenberg

"You guys did a really great job! I cannot say enough good things about the experience."

Richard Ranke

"Everything was first class: excellent instructor, material, video, moderator, audio. Thank you!"

Oscar Pagani

My name is Marc Grabanski I'm the founder of Frontend Masters. I guarantee this workshop will be awesome. Period.

If you don't think it's worth 10x the value, I'm happy to give you back every penny. That's my promise to you!

Marc Grabanski
Founder Frontend Masters