Bart Louwers

Passionate Software Developer. Maintainer of @maplibre Native. #Cpp #TypeScript #FOSS #GIS #Maps #OSM #MapLibre

Flags: 🇪🇺 🇳🇱 🇩🇪 🇺🇦
Blog / Website: https://louwers.dev
GitHub: https://github.com/louwers

Public Key

npub1wzxzrpd6hfpp7q8umdnhavfgwjke43ump2tdvd57w5zn2vreewcqapl97v

NIP-05 Address

[email protected]

Profile Code

nprofile1qqs8prppskat5sslqr7dkem7ky58ftv6c7ds49kkx6082pf4xpuuhvqpz3mhxue69uhhyetvv9ujuerpd46hxtnfduqs6amnwvaz7tmwdaejumr0dsyn74vg

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relay.nostr.net

relay.damus.io

nos.lol

Author Public Key

npub1wzxzrpd6hfpp7q8umdnhavfgwjke43ump2tdvd57w5zn2vreewcqapl97v

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Last Notes

2026-04-11 17:57:59 CEST

Cirrus CI homepage: “🎉🎉🎉️ Big milestone for Cirrus Labs — we’re joining OpenAI to work on Agent Infrastructure 🎉🎉🎉”
The announcement: “Cirrus CI will shut down effective Monday, June 1, 2026.”
One month to migrate. I would be so traumatized I’d self host all my CI until the end of my days if that happened to me.

2026-02-11 22:35:50 CET

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Could you point out a specific example of bad code that was merged?

2026-01-09 10:42:24 CET

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Not if you self-host it. It is open source.

2026-01-08 13:42:00 CET

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You can render Chart.js graphs on the server using a special URL.
Doesn't get more lightweight than that.
https://github.com/typpo/quickchart
https://quickchart.io/

2025-12-27 23:57:12 CET

When I see that a piece of software is not packaged for #NixOS I take that as a strong indicator that it is virtually impossible to package.
Case in point: Sentry.

2025-12-27 12:27:01 CET

@npub10fa…rdvy Reading https://exploringjs.com/nodejs-shell-scripting/ch_node-util-parseargs.html
Do you know if it is possible to generate --help with #NodeJS parseArgs? I feel that is the one thing that is really needed for it to to be really useful.

2025-12-13 17:07:28 CET

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https://dontasktoask.com/

2025-10-29 06:18:33 CET

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Another downside of Cloudflare: your website becomes pretty much inaccessible from most of Germany in the evening. Think 30 second ping and half of packets dropped.
Google “Deutsche Telekom Cloudflare” to dig in the rabbit hole. Has been a problem for years…

2025-10-19 03:17:06 CEST

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I don't understand the question?
Rotate a screen? Or a line of text?

2025-10-16 21:56:06 CEST

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No it is VC funded. That is what worries me.
https://voidzero.dev/posts/announcing-voidzero-inc

2025-10-16 21:47:59 CEST

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Interested to hear your thoughts on it. They say it's "free for open source", but what open source project would choose a proprietary build tool?

2025-09-17 18:51:47 CEST

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In that particular example, yes.
curl -v https://example.com/ 2>&1 | grep '> GET'
> GET / HTTP/2
curl -v https://example.com 2>&1 | grep '> GET'
> GET / HTTP/2
But:
curl -v https://example.com/about 2>&1 | grep '> GET'
> GET /about HTTP/2
curl -v https://example.com/about/ 2>&1 | grep '> GET'
> GET /about/ HTTP/2
And client-side routing can also make it show something different.

2025-09-17 18:10:16 CEST

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https://example.com/ and https://example.com are different URLs though.

2025-09-03 12:46:42 CEST

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I use this:
https://nodejs.org/api/fs.html#fspromiseswatchfilename-options

2025-09-02 13:41:33 CEST

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Well maybe you are onto something. I bought Innovation after you shared a picture of playing it on the train. Played my first game last week, with levels of interaction I have not seen in any other game. Definitely a lot more fun than multiplayer solitaire.

2025-09-02 13:32:08 CEST

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Nothing wrong with multiplayer solitaire. I really like Ark Nova for example.

2025-08-17 13:48:43 CEST

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The "at least" part is very relatable.

2025-08-13 10:05:18 CEST

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Updating my Tinder profile right now.

2025-08-01 17:57:49 CEST

Did anyone try out #zed?

2025-06-30 19:30:36 CEST

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Looking for some use cases for FinalizationRegistry? https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/FinalizationRegistry
Or this? https://github.com/tc39/proposal-explicit-resource-management

2025-06-29 18:00:46 CEST

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Is anything ever really?

2025-06-10 02:13:54 CEST

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Just is quite popular now. https://github.com/casey/just

2025-05-15 22:57:43 CEST

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https://nodejs.org/api/addons.html

2025-05-15 22:57:35 CEST

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Real lesson: use NAPI not NAN.

2025-03-22 12:06:36 CET

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Do you know how to write Node.js scripts with TypeScript without having to create a package.json node_modules and tsconfig.json to get Node.js types?

2025-03-20 23:41:20 CET

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Are the years of diaper changing worth it for the board games? Asking for a friend.

2025-03-17 20:56:07 CET

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I read that Go was created to replace C++ for some use cases, but it never really appealed to C++ programmers at large, likely because unlike C++ it is quite a 'dumb' and inflexible language.
Instead it appealed to Python programmers, who got a decent type system, still a relatively simple language, and much better performance.
Also see this classic blog post. https://cowlark.com/2009-11-15-go/

2025-03-16 22:39:42 CET

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Go does not spark joy (IMO).

2025-03-15 07:50:06 CET

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Do you know how memfs is able to wrap an async fs API and return a sync fs API?

2025-03-11 15:58:48 CET

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No word on WASM...

2025-02-25 21:21:24 CET

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Stupid not at least to show some basic information that can be cached IMO.

2025-02-22 00:09:23 CET

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In the inner (true) condition X should extend Y.
That is not satisfied when X = 'b' and Y = 'c' so it is never.

2025-01-28 19:39:12 CET

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You can also use a hybrid approach and just bundle your deps and not your app.

2025-01-28 19:26:49 CET

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Well @npub10fa…rdvy did say "small project".
I see no reason why you would want to avoid CDNs for small projects.

2025-01-28 18:40:24 CET

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NONE. You can serve JavaScript ESM modules directly to the browser, even type safe with TypeScript in JSDoc comments. Dependencies can be imported directly from esm.sh (with an import map). https://dev.to/louwers/web-development-without-tooling-flk

2025-01-25 14:06:38 CET

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Can highly recommend doing these: https://github.com/type-challenges/type-challenges
You will become a type Jedi.

2025-01-19 01:12:20 CET

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Godwin has entered the chat.

2025-01-17 11:51:56 CET

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Or const arr1: [typeof Red | typeof Green, 'RED' | 'GREEN'][]

2025-01-14 13:46:51 CET

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Was thinking about good ol' JavaScript (possibly with TypeScript JSDoc comments) unminified, unbundled and untranspiled. 🙂

2025-01-14 13:15:52 CET

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“I don’t bundle” should be another option.

2025-01-10 21:55:26 CET

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what. the.
https://cdn.masto.host/floss/media_attachments/files/113/806/048/886/774/026/original/cf6be182c5964a3e.png

2024-12-27 16:12:20 CET

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Also missing C.

2024-10-31 17:17:52 CET

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“The Omnivore codebase will remain 100% open-source for all users”.
This sounds great if you don’t know anything about open source, lol.

2024-10-24 14:11:20 CEST

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Are there any alternate browser engines already?

2024-08-28 21:39:04 CEST

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I don't understand.
```js
class Base {
bla() {
console.log("base");
}
};
class Derived extends Base {
bla() {
console.log("derived");
}
};
/**
* @template {Base} T
* @param {T} base
*/
function fun(base) {
base.bla();
}
fun(new Base());
fun(new Derived());
/**
*
* @param {typeof Base} cls
*/
function makeBase(cls) {
return new cls();
}
makeBase(Base).bla();
makeBase(Derived).bla();
```

2024-08-17 12:09:45 CEST

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I now see it is poorly worded, but that interpretation remains wild.
There is a whole section about "Conveying Modified Source Versions". And as @npub1hk9…xt99 mentioned the preamble clearly states:
"It requires the operator of a network server to provide the source code of the modified version running there to the users of that server. Therefore, public use of a modified version, on a publicly accessible server, gives the public access to the source code of the modified version."

2024-08-17 11:09:08 CEST

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The whole sentence reads: "Notwithstanding any other provision of this License, if you modify the Program, your modified version must prominently offer **all users interacting with it remotely through a computer network...**". Ergo if there are no users interacting with it remotely through a computer network, this does not apply. You cannot interact remotely with non-running source code living in a GitHub repo. There are valid criticisms of AGPL, but this misses the mark.

2024-08-16 23:41:55 CEST

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"Source code offer system" is overdramatizing a link to a GitHub repo.