@jdsalasc/solvejs-schema

Zero-dependency schema validation for JavaScript and TypeScript with typed inference and JSON Schema export.

Utilities

• s.string(), s.number(), s.boolean(), s.date()
• s.literal(), s.array(), s.object(), s.union()
• parse, safeParse
• optional
• s.refine
• toJsonSchema
• Infer

When to use this package

Use it when you need one schema definition for runtime validation, TypeScript types, and JSON Schema generation.

Limitations and Constraints

• Object parser only returns declared shape keys.
• Optional fields are represented via optional() in schema shape.
• JSON Schema export is pragmatic and intentionally scoped.

Install

npm i @jdsalasc/solvejs-schema

Quick example

import { s, type Infer, toJsonSchema } from "@jdsalasc/solvejs-schema";

const userSchema = s.object({
  id: s.string().uuid(),
  age: s.number({ coerce: true }).int().min(18),
  email: s.string({ trim: true }).email(),
  newsletter: s.boolean({ coerce: true }).optional()
});

type User = Infer<typeof userSchema>;

const parsed = userSchema.safeParse({
  id: "550e8400-e29b-41d4-a716-446655440000",
  age: "21",
  email: "[email protected]",
  newsletter: "true"
});

const jsonSchema = toJsonSchema(userSchema);