Warsaw TypeScript

All things #typescript! Organized by @MakerDao, @RampNetwork and @bhwarsaw. Sponsored by @SumoLogic

[Warsaw TypeScript @WwaTypeScript]

The list of speakers 📢 is available now. Check it out 🔥and sign up for TypeScript #5 meetup here: https://t.co/ROQPRXy45r

[Andrzej Wódkiewicz @vutkyevitch]

How should this #typescript issue be properly titled? I (clearly) have trouble describing the problem:
https://t.co/XstL3j7IHQ

cc'ing big brain energy @quezak2 @krzKaczor

[Aleksandra @aleksandrasays]

Today I learned that if you don't want to emit internal types from a library, you can set `stripInternal` to true in TypeScript config and add a `@ internal` comment:

[Alexey Berezin ❄️ @beraliv]

First participated in the release of [email protected] as contributor 🥳

typescript@^4.0.0, `StrictExtract`, `MergeN`, `IsTuple` improvement 🚀

https://t.co/OEjiUMetko

[Alexey Berezin ❄️ @beraliv]

Let's have fun today and think how we can pass the type to generic type in TypeScript later

⬇️

[Anders Hejlsberg @ahejlsberg]

I was going to tweet about this, but you beat me to it! Nice to finally have this working.

[Andrew Branch @atcb]

One small quality of life improvement for frontend devs in TypeScript 4.3: you can now jump into imported files TypeScript doesn’t understand, like CSS.

[TypeScript @typescript]

Check out our Release Candidate of TypeScript 4.3! We just published the RC and are looking for feedback on new features, faster --watch builds, and more. Give it a try!

https://t.co/GHwr5vtmjF

[Warsaw TypeScript @WwaTypeScript]

Oh well, actually the time was "now" for almost a year - this PR was originally submitted more than a year ago 🤣

[Warsaw TypeScript @WwaTypeScript]

If you want to play with experimental pipeline operator support in TS now's the time!

[bsky.app/profile/orta.io @orta]

The external contributor @TypeScript PR which explores the stage 1 TC39 pipeline operator just got a fresh rebase and update

Playground: https://t.co/rfrLJHQEia

PR: https://t.co/WH9C3mGteq

Proposal: https://t.co/CW0MxOCg3v

[Ryan Cavanaugh 👉 searyanc.dev on bsky @SeaRyanC]

This is actually _really good_ and there are times when defining your types in terms of an existing value is the 100% best thing you can do 1/

[Michal Zalecki @MichalZalecki]

Do you remember the difference between unknown and any in #typescript?

🥇 You can assign anything to unknown and any.
🥈 You can't assign unknow to anything except of unknow and any.
🥉 You can't access unknow properties (unlike any).

[Kris Kaczor 🦆⚡️ @krzKaczor]

.@typescript community seems to love newer features that come with new TS versions. Here's a breakdown of downloads per version👇

🥇3.9 released 10 months ago (Inference imprv)
🥈4.1 current stable (Template Literal Types)
🥉4.0 released 6 months ago (Variadic Tuple Types)

[Warsaw TypeScript @WwaTypeScript]

Especially useful if you use TypeScript to develop a GitHub Action:

[Kris Kaczor 🦆⚡️ @krzKaczor]

Lately, I started digging deep into @github Actions. The way how most actions end up placing build artifacts on the default branch was driving me mad. In this article, I explain how we can use GitHub Actions to develop GitHub Actions and fix it!

👇👇👇

https://t.co/bJwXpYz31i

[Kris Kaczor 🦆⚡️ @krzKaczor]

Lately, I started digging deep into @github Actions. The way how most actions end up placing build artifacts on the default branch was driving me mad. In this article, I explain how we can use GitHub Actions to develop GitHub Actions and fix it!

👇👇👇

https://t.co/bJwXpYz31i

[Warsaw TypeScript @WwaTypeScript]

It you’re hungry for a TypeScript meetup just before the xmas:

[Wrocław TypeScript @WrocTypeScript]

🔔🎅🎄

I don’t want a lot for Christmas
There are just two things I need
Template string literal types (@MichalZalecki)
And a good assertion lib (@krzKaczor)

📅 December 22nd (Tuesday)
🕡 6:30 pm CET

https://t.co/e4dGqzuQRI

[Rob Palmer @robpalmer2]

Yesterday I shrank a TypeScript declaration from 700KB to 7KB by changing one line of code 🔥

🧵

[Kris Kaczor 🦆⚡️ @krzKaczor]

By default, TypeScript WON'T throw compilation errors on unreachable code 😱

You might want to tweak that! Just set `"allowUnreachableCode": false` in tsconfig.json

https://t.co/t0bE3Avf9G

[Wrocław TypeScript @WrocTypeScript]

Tip: make sure your declaration files are type-checked.

Compile-time errors in unchecked *d.ts files can hide real bugs and lead to painful debugging sessions.

Thread 🧵

[Kris Kaczor 🦆⚡️ @krzKaczor]

Use auxiliary package.json to avoid "deep" import paths to your npm packages. This is a great solution if you want to clearly divine public/internal interface of your project.

h/t @PSzlachciak

👇👇👇

[barrutko.eth 🦦 @barrutko]

Earl. Young project, but with a strong fanbase in Warsaw already. Make sure to check it out! 😁
#typescript #tooling

https://t.co/twxChgBs0D