Express Standard Schema Validation
JSON →Express middleware for validating request inputs (body, query, params, headers) using any library that implements Standard Schema V1. Current stable version: 0.2.3. Release cadence: infrequent, early-stage. Key differentiators: multi-library support (Joi, Zod, ArkType, Valibot), TypeScript-first, value replacement with original value retention in req.original*. Requires Node >=20 and Express >=4.0.0. Derived from express-joi-validation but generalized for Standard Schema. Configurable per-route or globally with passError, statusCode, and custom error templates.