Mmastodon TechnologySoftware first seen 17 h ago, last 14 h ago, peak #6

Developer benchmarks six TypeScript validation libraries in one comparison

Original: I compared 6 TypeScript validation libraries + a handwritten guard: is-kit, Runtypes, Valibot, Zod, ArkType, and typia.

A developer compared six TypeScript validation libraries — is-kit, Runtypes, Valibot, Zod, ArkType and typia — alongside a handwritten type guard. All were tested against the same User type, the same runtime rules and the same fixtures. The author says the biggest surprise was neither bundle size nor speed, but how difficult it proved to make all seven approaches behave consistently.

Why now: TypeScript developers are actively weighing which validation library to adopt, and head-to-head benchmarks draw attention

TypeScriptZodValibotArkTypetypia

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Evidence

• I compared 6 TypeScript validation libraries + a handwritten guard: is-kit, Runtypes, Valibot, Zod, ArkType, and typia. Same `User`. Same runtime rules. Same fixtures. The biggest surprise wasn’t bundle size or speed. It was how hard it was to make all 7 approaches actually… · nyaomaru · 1

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