⚡ @sylphx/vex

Ultra-fast schema validation - 12x faster than Zod, 6x faster than Valibot

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Packages

Package	Version	Description
@sylphx/vex		Schema validation library

Quick Start

npm install @sylphx/vex

import { pipe, str, num, int, email, positive, object, safeParse } from '@sylphx/vex'

const validateUser = object({
  name: pipe(str, nonempty),
  email: pipe(str, email),
  age: pipe(num, int, positive),
})

// Throws on error
const user = validateUser(data)

// Returns result
const result = safeParse(validateUser)(data)

Why Vex?

Pure functional design - validators are constants, not factory functions:

// Vex - zero allocation
str                  // constant
pipe(str, email)     // compose constants

// Others - allocates every call
z.string().email()   // Zod
v.string()           // Valibot

Performance

	Vex	Zod	Valibot
Speed	⚡ 12x	1x	~2x
Schema creation	Zero overhead	Slow	Medium
Tree-shakeable	✅	❌	✅

Benchmarks (Bun, ops/sec)

Operation	Vex	Zod	Valibot	vs Zod	vs Valibot
string	367M	50M	50M	7.4x	7.3x
email	128M	12M	17M	11x	7.5x
url	110M	4M	5M	28x	23x
object (3 fields)	18M	5M	7M	3.9x	2.7x
array[50]	8.5M	780K	1.4M	11x	6x
safeParse (invalid)	44M	376K	2.6M	118x	17x

Average: 12x faster than Zod, 6x faster than Valibot

Development

# Install
bun install

# Test
bun test

# Benchmark
bun run bench

# Build
bun run build

License

MIT

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