imagine using untyped regex in 2025

arkregex is ridiculously optimized. even expressions like this are inferred instantly. but what about the most extreme cases?🧵

new RegExp(): ❌types 😴tired arkregex: ✅types 🫨wired

I am looking for a full-time job. Being independent in open source for 3.5+ years has been wonderful. I've gotten done most of the high-level goals I wanted to, and miss having people & structure around me. If you know of a role for a staff-level TypeScript+web developer, let me know! 🙂

hopefully this is not too insensitive

my abusive relationship with typescript's type system continues

📢Introducing ArkRegex📢 a drop in replacement for new RegExp() with types ⬇️

new to typescript? here's a handy little type for parsing regular expressions:

soon

🙅convoluted regex 👍simple types

days of remaining sanity also numbered btw

Ever get mixed up about unions and intersections? ArkType has your back🫡

"any sufficiently advanced typescript types are indistinguishable from magic" - Arthur C. Clark, 1962

Like type-safe environment variables? Now there's a better way to get them with arkenv⛵❤️

worth it

had an amazing time with @typescript.fm. if you're interested in a deep-dive on typescript validation and @arktype.io, this is for you! 👇

attest can snapshot types, type errors and autocomplete results. all from your existing unit tests📚🔗⬇️

⚠️trade offer⚠️ i receive: JSON Schema you receive: lightning-fast validation and clear errors

How to use ArkType: 1️⃣ write typescript 2️⃣ use it in editor 3️⃣ use it at runtime

This opens up so many doors. Counting on the community to help find them🙏

it's just too easy

zod4 is 5x faster than zod3 for object validation. arktype is 20x faster than zod4.

JSON Schema: Making illegal states representable since 2007

shoutout to @typescriptlang.org- still blown away that this works🤯

you deserve better type errors

the fields medal is a lock if you can do this

you haven't lived until you've seen autocomplete for "string | n" try it in-browser 🛝🔗👇

🌶️hover clarity is a huge part of typescript dx

serializable definitions mean that your users theoretically don't even need to install ArkType to pass a type-safe schema 🤯

ArkType can granularly configure 11 non-JSON-schemafiable constraints... or just do this and say "f*** it, we ball"😎

it's just too easy

want to add your own keywords to arktype? you don't need a feature request- you need a scope🧑‍🍳

90% of @ark/attest's features don't exist anywhere else. if you need to test or optimize complex types, i cannot overstate how much it will help 👇👀

imagine Object.keys() returning something other than `string` #1 ROI issue in @typescriptlang.org's backlog

1️⃣s-tier DX 2️⃣ridiculous tsserver perf 3️⃣insanely fast runtime validation 4️⃣great documentation 5️⃣power features (generics and HKTs) 6️⃣deep introspectability 7️⃣serializable definitions 8️⃣human-readable errors 9️⃣universal composability 🔟easy to learn Choose 10.

(chaining sometimes good)

@arktype.io schemas 👉👈 JSON-serializable TypeScript

z.iSleep() type("REAL SHIT")

gonna be golden✨

dx in 30 minutes or it's free

Meet .map(), ArkType's most powerful API for deriving schemas. Transform keys, values and more with a single call.

you guys have absolutely no idea the shenanigans you're missing out on (also friendly helpful typescript devs)

😴.tired() 😲"wired"

index signatures? more like *fun*dex signatures👍

when they see you're still .chaining() in 2025

📈ArkType just surpassed 1M downloads/month📈 If you *still* haven't tried it, your friends are now laughing behind your back (statistically speaking).

Need runtime validation for your existing types? ArkType's `declare` API gives you just that.

@ark/attest is the only assertion library that can snapshot TypeScript autocomplete results 📷

Restrict the size of numbers, strings and arrays with expressive, type-safe syntax.

Try ArkType 2.1 alongside your existing Zod schemas: arktype.io or vice-versa: zod.dev