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Ives van Hoorne

@ives.sh

Friends call me Flip, building CodeSandbox! πŸͺπŸ³οΈβ€πŸŒˆ

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07.11.2023
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Latest posts by Ives van Hoorne @ives.sh

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Some personal news!

Blixt, Floris and I have started a new startup.
We’ve been quietly building something new for indie founders, and it’s starting to feel really good.

We'll share more in the coming weeks. But if you’d like early access, send me a message!

19.02.2026 16:59 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Oh! Taking a look!

19.11.2025 19:01 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Okay, so I see that in CSB 19.2 now properly resolves. I wonder if this is because of a CDN issue (where it cached that it could not resolve 19.2) or something else. I will try directly in the React docs now.

02.10.2025 09:00 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Walking to the office now and will take a look when I arrive!

02.10.2025 08:23 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I love Honeycomb!!!

10.03.2025 14:07 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
The AVG and P05 of resume VM duration. It goes down significantly on Friday/Saturday.

The AVG and P05 of resume VM duration. It goes down significantly on Friday/Saturday.

Few things beat the feeling of deploying code and watching the graphs drop.

If that's not enough reason to use OpenTelemetry, I don't know what is!

10.03.2025 07:43 πŸ‘ 90 πŸ” 7 πŸ’¬ 1 πŸ“Œ 2

When I test in Safari, it says "Opener, Opener Text" when selecting an item, but not the item name. Do you get something different?

27.02.2025 00:29 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Wow, this is a real mystery! I'm taking a look!

The first thing that comes to mind is that for hot module reloading we inject some hooks (similar to how Webpack does it), but I don't know how that could affect this runtime performance.

27.02.2025 00:29 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I just arrived in SF! Anyone wants to meet up or go to any meetup? πŸ˜„

25.02.2025 07:28 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Whimsical Animations Learn how to create charming interactions and delightful touches using the magic of CSS, JavaScript, SVG, and Canvas. I’m sharing all my tricks in this one!

πŸŽ‰ Introducing my upcoming third course, Whimsical Animations!

This course will teach you how to build top-tier animations and interactions using a variety of techniques. ✨

You can join the waitlist on the course’s brand-new site, which is the most ridiculous thing I’ve built in quite some time:

24.02.2025 16:32 πŸ‘ 423 πŸ” 68 πŸ’¬ 38 πŸ“Œ 18

You can find the template here: codesandbox.io/s/github/co...

20.02.2025 14:00 πŸ‘ 4 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Created a new template for CodeSandbox that runs a headless chromium browser. It exposes a WebSocket port which you can use to control it.

This is especially useful with CodeSandbox SDK, as it allows you to create snapshottable & clonable browser environments on the fly πŸ˜„

20.02.2025 14:00 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 1
Ports – CodeSandbox Learn how you can interact with ports in your sandbox.

You can find more info about how this works in our docs: codesandbox.io/docs/sdk/po...

19.02.2025 16:39 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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It's now possible to access preview URLs for private sandboxes with CodeSandbox SDK!

We also expose a new CLI (`csb sandbox preview-tokens`) to manage preview tokens for a sandbox.

19.02.2025 16:38 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 1
Sessions – CodeSandbox Sessions allow you to create multiple users inside a single sandbox.

Under the hood, we create a Linux user for every unique session and start a rootless Podman container which the session will operate from.

This way, the session is isolated from other sessions, but you will still be able to do root operations.

Docs are here: codesandbox.io/docs/sdk/se...

22.01.2025 19:46 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This has been one of the top feature requests since we released the SDK and it unlocks some cool use cases:

- Collaboration: allow multiple users to connect to the same sandbox/branch and collaboratively edit files

- Anonymous previews: create r/o sessions to share files/shells with others

22.01.2025 19:46 πŸ‘ 0 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Just published a new feature I'm excited about for the CodeSandbox SDK: Sessions API πŸŽ‰

This API allows you to create multiple users in a single sandbox, allowing for collaborative editing and sharing sandboxes publicly.

+ we use the same API at CodeSandbox πŸ˜„

22.01.2025 19:46 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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honey i juiced the caret

06.01.2025 18:11 πŸ‘ 43 πŸ” 5 πŸ’¬ 2 πŸ“Œ 0

You can read more about the update (and give feedback!) on the CodeSandbox SDK repository:

github.com/codesandbox...

20.12.2024 19:09 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Our first weekly release for CodeSandbox SDK is live!

This week we've focused a ton on performance. VM clones are now 2x faster (1.3s) and snapshot resumes are now within a second (0.6s)! Expect some further improvements the next few weeks.

Happy holidays & new years! πŸŽ†

20.12.2024 19:09 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Oh wow yeah, CodeSandbox would be perfect for this. I need to get a better understanding of DNS to see how we can make it work with different domains in a self-serve way, but I think it should be possible!

12.12.2024 18:08 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Thank you!!

12.12.2024 17:56 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Allow custom preview domains Β· Issue #2 Β· codesandbox/codesandbox-sdk Ability to use your own wildcard domain for sandbox preview URLs.

Interesting, so you would like to support for example ":id.my-domain.tld"? It's not possible today, but I think we should be able to support that. I'll create an issue for it: github.com/codesandbox/...

12.12.2024 17:02 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Dankjewel!!

12.12.2024 16:53 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Me too!

12.12.2024 16:47 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thank you!!

12.12.2024 16:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah, beyond my wildest imagination πŸ˜‚

12.12.2024 16:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I want to thank everyone who has been part of the journey of CodeSandbox so far for their support and advice. It's a wild rollercoaster, but I'm enjoying it thoroughly.

When writing the first line of code for CodeSandbox, I never could've imagined it growing to this.

12.12.2024 16:42 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

CodeSandbox SDK allows you to programmatically spin up VMs on our infrastructure.

You'll get all the things we've built for CodeSandbox, including memory snapshot/restore and VM cloning.

I'll share more examples, but you can already play with it here: github.com/codesandbox/....

12.12.2024 16:42 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

We're starting a new chapter with CodeSandbox! Next to the news of moving and marrying, I promise this is the last big news from me this year πŸ˜‚.

This is huge for us. We'll have more resources to build and grow CodeSandbox, and I'm extremely excited about CodeSandbox SDK.

12.12.2024 16:42 πŸ‘ 21 πŸ” 0 πŸ’¬ 5 πŸ“Œ 0