docs: arktype 2.2 release

- Bump arktype version to 2.2.0
- Add 2.2.0 CHANGELOG section
- Add 2.2 blog post and twitter thread
- Update docs across configuration, expressions, objects, type-api, etc.
- Add Mintlify back to ArkSponsors
- Fix CHANGELOG typos (variable casing, link corrections)
- Update llms.txt

Made-with: Cursor

Author: ssalbdivad

ark/docs/content/docs/blog/2.1.mdx

@@ -185,7 +185,7 @@ const out = User({
 })
 ```
 
-The options you can provide here are identical to those used to [configure a Type directly](https://arktype.io/docs/expressions#meta), and can also be [extended at a type-level to include custom metadata](https://arktype.io/docs/configuration#custom).
+The options you can provide here are identical to those used to [configure a Type directly](https://arktype.io/docs/expressions#meta), and can also be [extended at a type-level to include custom metadata](https://arktype.io/docs/configuration#metadata).
 
 ### Tuple and args expressions for `.to`
 

ark/docs/content/docs/blog/2.2-twitter.md

@@ -0,0 +1,167 @@
+---
+title: ArkType 2.2 Twitter/X Thread
+---
+
+# ArkType 2.2 Twitter/X Thread
+
+---
+
+**1/**
+
+ArkType 2.2 is out.
+
+This is our biggest release since 2.0- validated functions, type-safe regex, bidirectional JSON Schema, and universal schema interop.
+
+Here's what's new 🧵
+
+---
+
+**2/**
+
+type.fn
+
+Define runtime-validated functions using the same syntax you already know.
+
+```ts
+const len = type.fn("string | unknown[]", ":", "number")(s => s.length)
+
+len("foo") // 3
+len([1, 2]) // 2
+```
+
+Defaults, optionals, variadics- it all works.
+
+---
+
+**3/**
+
+Type-safe regex via arkregex
+
+Regex literals in your definitions now carry full type inference. x-prefix parses capture groups at runtime.
+
+```ts
+const T = type({
+  birthday: "x/^(?<month>\\d{2})-(?<day>\\d{2})-(?<year>\\d{4})$/"
+})
+
+T.assert({ birthday: "05-21-1993" }).birthday.groups.month // "05"
+```
+
+---
+
+**4/**
+
+Standard Schema validators can now be embedded directly in ArkType definitions.
+
+Zod, Valibot, or anything else that implements the spec.
+
+```ts
+const User = type({
+  name: "string",
+  age: "number",
+  address: { street: "string" }
+})
+```
+
+ArkType as a universal composition layer.
+
+---
+
+**5/**
+
+@ark/json-schema
+
+Bidirectional JSON Schema conversion. Parse JSON Schema into ArkType Types, and convert Types to JSON Schema.
+
+Huge thanks to @TizzySaurus for building this one.
+
+toJsonSchema() now supports configurable fallbacks, draft-07/2020-12 targets, and cyclic types.
+
+---
+
+**6/**
+
+Configurable toJsonSchema
+
+Not everything in ArkType maps cleanly to JSON Schema. Now you can handle incompatibilities your way.
+
+```ts
+const T = type({
+  birthday: "Date"
+})
+
+T.toJsonSchema({
+  fallback: {
+    date: ctx => ({ ...ctx.base, type: "string", format: "date-time" }),
+    default: ctx => ctx.base
+  }
+})
+```
+
+11 granular fallback codes.
+
+---
+
+**7/**
+
+select + configure
+
+Query your types by node kind and predicate. Use the same selectors to configure specific references.
+
+```ts
+const myType = type("1 < number < 10")
+
+const minNodes = myType.select("min")
+const exclusiveMins = minNodes.filter(n => n.exclusive)
+
+myType.configure(
+  { description: "a special domain" },
+  "domain"
+)
+```
+
+---
+
+**8/**
+
+Improved type.declare
+
+Pre-declare your TS type, get compile-time errors when your definition doesn't match.
+
+Now supports morph side declarations and optionality via property values.
+
+```ts
+// type.declare<{ a: string }>().type({ a: "1" })
+// TS Error: declared: string; inferred: 1
+```
+
+---
+
+**9/**
+
+More:
+
+- type.or, type.and, type.merge, type.pipe - n-ary standalone operators
+- "|>" string-embeddable pipe syntax
+- type.valueOf for TS enums
+- string.hex + string.regex keywords
+- Serializable ArkErrors (flatByPath, flatProblemsByPath, toJSON)
+- TraversalError replaces AggregateError
+- exactOptionalPropertyTypes config
+- ES2020 + Hermes compatibility
+- In-docs playground
+- Better JSDoc + go-to-definition
+
+---
+
+**10/**
+
+Full announcement: arktype.io/docs/blog/2.2
+
+I couldn't be more hyped to see what you do with it.
+
+⚡ arktype.io/docs/intro/setup
+⭐ github.com/arktypeio/arktype
+👋 arktype.io/discord
+
+If you want to support this work: github.com/sponsors/arktypeio