Overview

.validate is similar to z.safeParse, except more than an order of magnitude faster*.

• Instructions: To install the .validate method to all schemas, all you need to do is import @traversable/schema-to-validator.
• [ ] TODO: add benchmarks + write-up

Example

Play with this example in the TypeScript playground.

import { t } from '@traversable/schema'
import '@traversable/schema-to-validator'

let schema_01 = t.object({ 
  product: t.object({ 
    x: t.integer, 
    y: t.integer 
  }), 
  sum: t.union(
    t.tuple(t.eq(0), t.integer), 
    t.tuple(t.eq(1), t.integer),
  ),
})

let result = schema_01.validate({ product: { x: null }, sum: [2, 3.141592]})
//                     ↑↑ importing `@traversable/schema-to-validator` installs `.validate`

console.log(result)
// => 
// [
//   { "kind": "TYPE_MISMATCH", "path": [ "product", "x" ], "expected": "number", "got": null },
//   { "kind": "REQUIRED", "path": [ "product" ], "msg": "Missing key 'y'" },
//   { "kind": "TYPE_MISMATCH", "path": [ "sum", 0 ], "expected": 0, "got": 2 },
//   { "kind": "TYPE_MISMATCH", "path": [ "sum", 1 ], "expected": "number", "got": 3.141592 },
//   { "kind": "TYPE_MISMATCH", "path": [ "sum", 0 ], "expected": 1, "got": 2 },
//   { "kind": "TYPE_MISMATCH", "path": [ "sum", 1 ], "expected": "number", "got": 3.141592 },
// ]