ArkType Introduces ArkRegex with Type Safe Regular Expressions

"ArkType, the runtime validation library known for type-safe syntax, has introduced ArkRegex, a drop-in replacement for JavaScript's RegExp constructor that brings full type inference to regular expressions. ArkRegex introduces type safety to regular expressions without any runtime overhead, shipping with support for all native RegExp features including positional and named capture groups, flags, and pattern validation at the type level. The library addresses a long-standing pain point in TypeScript development where regular expressions constructed from strings offer no type safety until runtime."

"The syntax for ArkRegex mirrors the native RegExp constructor, making adoption straightforward. An example from the documentation shows type inference for a simple pattern: const ok = regex("^ok$", "i") // Regex<"ok" | "oK" | "Ok" | "OK", { flags: "i" }> For developers working with capture groups, ArkRegex provides automatic typing for both positional and named captures. Named capture groups receive similar treatment, with the library inferring precise types for each named group in the pattern. This feature particularly benefits email validation and URL parsing patterns common in production applications."

ArkRegex is a drop-in replacement for JavaScript's RegExp constructor that brings full TypeScript type inference to regular expressions. The library infers string types from regex patterns and surfaces syntax errors and invalid group references as compile-time type errors rather than runtime failures. ArkRegex supports all native RegExp features including positional and named capture groups, flags, and pattern validation at the type level while incurring no runtime overhead. The syntax mirrors the native RegExp constructor for easy adoption. The release targets TypeScript 5.9 or later and installs via pnpm install arkregex. ArkRegex complements other ecosystem solutions by prioritizing native syntax and type-level validation.

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