TypeScript 5.3 is a no-brainer upgrade

00:00 Intro
00:28 Import Attributes
01:21 switch (true) Narrowing
02:54 Interactive Inlay Hints

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[mattpocockuk]

For those stumbling in late, I missed this feature for this video because it wasn't mentioned in the release notes:

[blizzy]

sick animations in this video, well done

[CodeWithMario]

Matt, your tutorials are consistently so clear, polished And easy to follow. thank you 🙇

[Svish_]

Upgrading Typescript _should_ be very little hassle, but unfortunately we're still stuck on older versions because of dependencies claiming not to support Typescript greater than x version... \*sigh\*

[struggopuggo]

I'm confused by switch true narrowing as it's a handy hack in JS but could they not have backed an actual pattern matching spec?

[Metruzanca]

Inlay hints is a feature that the rust language server has had for a while. I've been wondering when other languages would gain the same thing.

[RefactoringRyan]

Psyched for your book. Always appreciate these quick updates Matt!

[magnusmarkling]

Great content!
I did notice some lip-sync issues at the end of the clip.

[hugodsa]

With the switch(true) in order for people to usually get the "right" type out, usually I have instead done a typeguard to assert it first and then return it.
It is more cumbersome, but it is also accurate and can easily be put on multiple small functions that can also be reused later on.

Thanks for sharing :)

[prionkor]

Why would someone return from an if statement then add "else if" below? "if return" pattern is more clean and easy to read solution then switch!

[Metruzanca]

All great features. Thanks for the breakdown as usual Matt.

[HerrThomasE]

Thank you very much. Good explanations and good video!!! I have subcribed.

[divy]

2:50 why not do `switch (typeof input)`?

[Dev-Siri]

from early, to now we are almost at the mid typescript times (x.5 to x.7 release)

and now typescript 4 seems so last year

[KuroBayashi]

I'm really confused by the `switch(true)`, I would never have thought of using a `switch` like that, or even put `true` in the `switch`. What are the benefit over something like:
```ts
switch ( typeof input ) {
case 'string':
case 'number':
return ( input );
case 'object':
return ( !! input ? input : undefined );
}
```

[zwanzr]

Using switch true should be a crime with a 10 years in jail penalty

[FunctionGermany]

that switch should be "switch (typeof input) ..."
what about this? does it work with type narrowing?

[patrick.miharisoa]

inlay hints 🔥
Home sweet home rust devs

[Brawaru]

With query parameters you can have an env.d.ts file define them (e.g., `declare module "*.svg?url" { ... }`), how would that work with import asser- attributes?

[rcnhsuailsnyfiue]

Why two return points in the switch(true) example? Why not just add a third case to one single return block?