Thank you for using Valibot 🙏

👀

💡We can hide internals with ~ instead of _ for btter DX:

I am excited to release the documentation for my new open-source project, Formisch.dev. It's time to rewrite your forms! 😉 Next, I will look into supporting @react.dev.

Vitest 4 comes with a new `expect.schemaMatching` API that uses standardschema.dev behind the scenes. Now, you can use @valibot.dev, @zod.dev, @arktype.io, etc. to test your code! This is huge! 📈

Struggling with unknown data in TypeScript? @valibot.dev parses it effortlessly: validate & transform via pipes, grab detailed issues with safeParse (no throws!), and optimize perf with the abortEarly config.

This message is for all @valibot.dev contributors. I recently added prompts to the Valibot repository that can be referenced when adding a new API reference to the website, for example, using an AI agent. github.com/fabian-hille...

@valibot.dev infers TS types + issues from your schemas! 🔥 No more boilerplate drudgery. Dive in: valibot.dev/guides/infer...

The docs for Formisch will probably be available in the next few days 🧱

@lgrammel https://x.com/lgrammel/status/1976644942425694511 #x-lgrammel Latest AI SDK 6 beta supports the following validation libs: Zod, Valibot, Arktype, Effect Schema (Zod still needed for AI SDK-internal schemas)

Hey everyone! Sorry for the instability of the @valibot.dev docs over the last two weeks. They should be working properly now. Our Vercel bill suddenly increased from a few dollars to over $300, so spent management disabled all services. I am in contact with @vercel.com.

What do you think about the new logo I designed for Formisch? 🧱

Thank you for your 8,000 stars on @github.com for @valibot.dev!

This is maybe one of the best articles explaining the philosophy and design decisions of @valibot.dev. It's technical, yet still easy to read and understand! I recommend taking a look, especially if you are currently using other libraries, such as @zod.dev. dev.to/oluwawunmiad...

We did it! Thank you! 🙏

🤏

LGTM 🚀 standardschema.dev

I guess I shipped on September 18th 🛳️

Writing tests is hard, and I'm lazy. I'd rather write a few invariants, and let fast-check fuzz test the rest. That's why I built @​traversable/valibot-test. Here it is in action:

Join me and @fabianhiller.com live on This Week in Svelte to talk about Formisch! Live in 19 minutes or so! youtube.com/live/E0xQXa4...

In tomorrow's episode of This Week in Svelte @fabianhiller.com—creator of Valibot—will join the stream to talk about Formisch: www.youtube.com/live/E0xQXa4...

What are "pipelines" in @valibot.dev? ℹ️ A pipeline is a left-to-right chain of schemas and actions ℹ️ Each step gets the previous step’s output and can validate and transform ℹ️ The final schema’s output type is the last step’s output type

Thank you for 2,003,706 downloads in the last 7 days 🙏

Great article by @cheddybop.bsky.social about front-end frameworks and innovation in this field. Give it a read! www.lorenstew.art/blog/react-w...

Who wants to become the 300th star? ⭐️ github.com/fabian-hille...

Is there a developer from Finland 🇫🇮 in our community who is interested in contributing Finnish translations to @valibot.dev's i18n package? 📦 github.com/fabian-hille...

This is one of the coolest @valibot.dev utility libraries around! 🔥 It can convert Valibot schemas into stringified TypeScript types. It can also check schemas for equality and clone them. Great job, @ahrjarrett.bsky.social! 🪄 Read the full article on @dev.to: dev.to/ahrjarrett/i...

I am excited to announce Formisch for @svelte.dev! @sveltesociety.dev, you have a new form library! ⚡️ Formisch is a schema-based, headless form library. It manages form state and validation. It is type-safe, fast by default and its bundle size is small due to its modular design. 🪄

valibot.dev is finally running on @tailwindcss v4 🙌 Please let me know if you notice anything that looks off

@valibot.dev is great because it has a robust ecosystem. Although we currently list 47 libraries on our ecosystem page, the actual number is much higher because of Standard Schema. 🚀 valibot.dev/guides/ecosy...

What would you put on the @valibot.dev v2 wishlist if we skipped Valibot v1.2 and worked on Valibot v2 instead? Here are some ideas I have:

@valibot.dev's mental modal is great because it consists of only 3 major building blocks… ✅ Methods help you modify or use a schema ✅ Schemas validate a specific data type ✅ Actions validate or transform a known data type

We are live! Come and join us!

Join us for a livestream tomorrow, where we will discuss Valibot, Standard Schema, Formisch, and JavaScript frameworks. 🔥

I am excited to share that Motion has raised $60M at a valuation of $550M to build an agentic work suite for businesses. Currently, I am responsible for developing AI Sheets, which enable you to run AI agents in bulk to automatically enrich and process data at scale. ⚡️

Formisch for @svelte.dev will probably drop in the next few days! 🔥 @sveltesociety.dev @rich-harris.dev @paolo.ricciuti.me

Many thanks to @paolo.ricciuti.me for improving the official Zod-to-Valibot codemod. The codemod can now convert transformations and refinements. Check it out on our website: valibot.dev/guides/migra...

For comparison: I think this is what a similar schema would look like in Zod Mini. It doesn't seem to support adding metadata, so I couldn't add the description.

@valibot.dev's pipelines are powerful because… ✅ they offer a clean API with a simple mental-model ✅ they support validation, transformation and adding metadata ✅ they are lightweight and fully typesafe

Switching from @valibot.dev to @zod.dev increases the bundle size by 18x, or by 4x if you choose Zod Mini.

@valibot.dev source code and API is... ✅optimized for bundle size and compression ✅every additional schema only adds a few extra bytes ✅designed for tree-shaking to eliminate unused code

@valibot.dev `toJsonSchema()`... ✅ is modular (no upfront bundle size cost) ✅ is tiny (adds only ~2 kB to your bundle if used) ✅ granularly configurable to your needs

I've taken some time off from open source, but I'll be back soon with some cool new features for Formisch, Valibot, and Standard Schema. Stay tuned! 🧩

Thanks a lot for more than 1 million @valibot.dev downloads in the last few days! 📈 In a few weeks, we will surpass 7 million monthly downloads. I will start working on our v1.2 release soon. 🧩

Thank you @coryty.com for supporting my open-source work with a $100 donation!

It's great to see that Yup is starting to support Standard Schema in v1.7. Many thanks to @awad.dev for implementing and driving this effort! github.com/jquense/yup/...

The open-source software that I have created over the past few years is currently being downloaded more than 20 million times per month on npm. Assuming my work is "worth" about $100 per hour, I am currently "paying" $8,000 out of my own pocket every month to maintain and provide them.

My new form library Formisch is already available for @preactjs.com, @qwik.dev, @solidjs.com and @vuejs.org. @svelte.dev will follow soon. What makes Formisch unique is its framework-agnostic core, which is fully native to the framework you are using. 🔥 GitHub: github.com/fabian-hille...

This is a great video from @jherr.dev that clearly explains why you should use a schema library like @zod.dev or @valibot.dev. Some of the Valibot schemas in the video are not "used" properly. I will take a look at our docs to see if we should clarify this. But go watch the video now! 🤓