Author | Lightnews

Matt Pocock

@mattpocock.com

14K followers 300 following 610 posts

Full-time TypeScript educator. Used to be a voice coach. He/him. Author of Total TypeScript 🧙 Hire me to teach your team TypeScript!

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Matt Pocock @mattpocock.com · Oct 31

I've been posting weekly TypeScript tips here for the past 15 weeks.

We're up to 42,000 of you on the list.

If you're not there, you're missing out.

www.totaltypescript.com/newsletter

Learn how to use TypeScript to level-up your applications as a web developer through exercise driven self-paced workshops and tutorials hosted by TypeScript wizard Matt Pocock.

www.totaltypescript.com

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Matt Pocock @mattpocock.com · Aug 12

www.totaltypescript.com/method-short...

Method Shorthand Syntax Considered Harmful

Using the method shorthand syntax for function annotations in TypeScript can result in runtime errors. It is recommended to use object property syntax instead.

www.totaltypescript.com

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Matt Pocock @mattpocock.com · May 28

www.totaltypescript.com/need-a-playg...

"Sorry, I Need A TypeScript Playground In Order To Help"

Learn how to provide a TypeScript playground when asking for help with your TypeScript questions, making it easier for others to assist you.

www.totaltypescript.com

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Matt Pocock @mattpocock.com · May 27

Some smoooooooth template literal types spotted in Vercel's Chat SDK

Gives you automatically typed error codes for multiple features at once.

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Matt Pocock @mattpocock.com · May 27

Lol, whoops

Matt Pocock @mattpocock.com · May 27

Men will literally write custom mapped types instead of going to therapy

Matt Pocock @mattpocock.com · May 26

Damn, I really want to make a "UX Patterns For AI Applications" course

All the hard stuff like stream resuming, generative UI, properly streaming markdown, editable plans, showing LLM progress

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Matt Pocock @mattpocock.com · May 26

Hilarious use case for a mapped type:

Use it to rename an object key your backend developers consistently misspell

parms -> params

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Matt Pocock @mattpocock.com · May 24

Yeah me too, not sure why they designed it like that

Matt Pocock @mattpocock.com · May 23

www.totaltypescript.com/need-a-playg...

"Sorry, I Need A TypeScript Playground In Order To Help"

Learn how to provide a TypeScript playground when asking for help with your TypeScript questions, making it easier for others to assist you.

www.totaltypescript.com

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Matt Pocock @mattpocock.com · May 23

This appears to work:

www.typescriptlang.org/play/#code/C...

TS Playground - An online editor for exploring TypeScript and JavaScript

The Playground lets you write TypeScript or JavaScript online in a safe and sharable way.

www.typescriptlang.org

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Matt Pocock @mattpocock.com · May 12

Some days my brain doesn't work. Today is one of those days

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Matt Pocock @mattpocock.com · May 11

Thanks John!

Matt Pocock @mattpocock.com · May 9

Don't know!

Matt Pocock @mattpocock.com · Apr 29

Could you email [email protected]? Finished for the day but they will handle it

Matt Pocock @mattpocock.com · Apr 29

Thank u, nuxt

Matt Pocock @mattpocock.com · Apr 21

Absolutely! ❤️

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Matt Pocock @mattpocock.com · Apr 21

Hey Adam, I found this rancid turd that looks like you 😂

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Matt Pocock @mattpocock.com · Apr 20

Lol how could I not be offended

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Matt Pocock @mattpocock.com · Apr 16

I think strongly typed metadata is the idea. This is important for meta use cases, like generating open API spec

Matt Pocock @mattpocock.com · Apr 12

The theory is to get them the job with free resources, then get their work to pay for the paid course.

Matt Pocock @mattpocock.com · Apr 12

I also hate paywalls, so I spent 9 months writing a TS book and released it for free:

www.totaltypescript.com/books/total-...

Total TypeScript Essentials

Learn how to use TypeScript to level-up your applications as a web developer through exercise driven self-paced workshops and tutorials hosted by TypeScript wizard Matt Pocock.

www.totaltypescript.com

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Matt Pocock @mattpocock.com · Apr 8

Spotted in the wild today: a Mutable<T> type.

Does the opposite of Readonly<T>. Weird that TS doesn't have this built-in.

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Matt Pocock @mattpocock.com · Apr 3

We'll see, I don't see it yet

Matt Pocock @mattpocock.com · Apr 2

I've made a breakthrough today - come up with a new style of course that's ready for the AI-assisted developer era.

It's just unbelievably cool, can't wait to show you.

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Matt Pocock @mattpocock.com · Apr 1

Yes, that's why it returns an async iterable and not an array, like other libs

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