Marvin Hagemeister
LightNews LightNews
marvinh.dev
Marvin Hagemeister
@marvinh.dev
2.2K followers 150 following 200 posts
I build simple and fast things. Part of Preact team.
Posts Replies Media Videos
marvinh.dev
Making chains of middlewares type-safe seems to require a bit of dancing around with types.

See github.com/microsoft/Ty...
Type for a middleware function that uses a list of 10 generic arguments to make it possible to chain a type through middleware functions because TS lacks native functionality to do so.
September 24, 2025 at 12:26 PM
marvinh.dev
Good idea, didn't check that. It looks like @std/semver is faster for validation, but way slower for calling `satisifes`. First image is validate + satisfies, second is satisfies only
node-semver: 75.3ms jsr:@std/semver: 70ms custom: 3.9ms node-semver: 23.6ms jsr:@std/semver: 41.9ms custom: 2.8ms
August 10, 2025 at 12:32 PM
marvinh.dev
TIL: `path.relative()` can return absolute paths on windows.

This is beyond cursed.
> path.relative("C:\\foo", "D:\\bar") 'D:\\bar' > path.join("foo", "D:\\bar") '.\\foo\\D:\\bar' > path.resolve("foo", "D:\\bar") 'D:\\bar' > path.normalize("foo", "D:\\bar") 'foo'
August 6, 2025 at 5:07 PM
marvinh.dev
Well looks like I lied!

(All of that is coming from snapshot tests though)
+13,728 -3,207
January 10, 2025 at 6:46 PM
marvinh.dev
Let's start the year strong! Dropping this banger of a PR on my work colleagues tomorrow.

It's way too big, but it's worth it. More will be revealed soon!
+4999 -3165 lines of code
January 9, 2025 at 11:38 PM