TypeBox

JSON Schema Type Builder with Static Type Resolution for TypeScript

Install

Npm

$ npm install @sinclair/typebox --save

Deno

import { Static, Type } from 'npm:@sinclair/typebox'

Esm

import { Static, Type } from 'https://esm.sh/@sinclair/typebox'

Example

import { Static, Type } from '@sinclair/typebox'

const T = Type.Object({ // const T = {
 x: Type.Number(), // type: 'object',
 y: Type.Number(), // required: ['x', 'y', 'z'],
 z: Type.Number() // properties: {
}) // x: { type: 'number' },
 // y: { type: 'number' },
 // z: { type: 'number' }
 // }
 // }

type T = Static<typeof T> // type T = {
 // x: number,
 // y: number,
 // z: number
 // }

Overview

TypeBox is a runtime type builder that creates in-memory JSON Schema objects that can be statically inferred as TypeScript types. The schemas produced by this library are designed to match the static type assertion rules of the TypeScript compiler. TypeBox enables one to create a unified type that can be statically checked by TypeScript and runtime asserted using standard JSON Schema validation.

This library is designed to enable JSON schema to compose with the same flexibility as TypeScript's type system. It can be used as a simple tool to build up complex schemas or integrated into REST or RPC services to help validate data received over the wire.

License MIT

Usage

The following shows general usage.

import { Static, Type } from '@sinclair/typebox'

//--------------------------------------------------------------------------------------------
//
// Let's say you have the following type ...
//
//--------------------------------------------------------------------------------------------

type T = {
 id: string,
 name: string,
 timestamp: number
}

//--------------------------------------------------------------------------------------------
//
// ... you can express this type in the following way.
//
//--------------------------------------------------------------------------------------------

const T = Type.Object({ // const T = {
 id: Type.String(), // type: 'object',
 name: Type.String(), // properties: {
 timestamp: Type.Integer() // id: {
}) // type: 'string'
 // },
 // name: {
 // type: 'string'
 // },
 // timestamp: {
 // type: 'integer'
 // }
 // },
 // required: [
 // 'id',
 // 'name',
 // 'timestamp'
 // ]
 // }

//--------------------------------------------------------------------------------------------
//
// ... then infer back to the original static type this way.
//
//--------------------------------------------------------------------------------------------

type T = Static<typeof T> // type T = {
 // id: string,
 // name: string,
 // timestamp: number
 // }

//--------------------------------------------------------------------------------------------
//
// ... then use the type both as JSON schema and as a TypeScript type.
//
//--------------------------------------------------------------------------------------------

import { Value } from '@sinclair/typebox/value'

function receive(value: T) { // ... as a Static Type

 if(Value.Check(T, value)) { // ... as a JSON Schema

 // ok...
 }
}

Types

TypeBox types are JSON schema fragments that can be composed into more complex types. Each fragment is structured such that a JSON schema compliant validator can runtime assert a value the same way TypeScript will statically assert a type. TypeBox provides a set of Standard types which are used create JSON schema compliant schematics as well as an Extended type set used to create schematics for constructs native to JavaScript.

Standard Types

The following table lists the Standard TypeBox types. These types are fully compatible with the JSON Schema Draft 6 specification.

┌────────────────────────────────┬─────────────────────────────┬────────────────────────────────┐
│ TypeBox │ TypeScript │ JSON Schema │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Any() │ type T = any │ const T = { } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Unknown() │ type T = unknown │ const T = { } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.String() │ type T = string │ const T = { │
│ │ │ type: 'string' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Number() │ type T = number │ const T = { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Integer() │ type T = number │ const T = { │
│ │ │ type: 'integer' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Boolean() │ type T = boolean │ const T = { │
│ │ │ type: 'boolean' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Null() │ type T = null │ const T = { │
│ │ │ type: 'null' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Literal(42) │ type T = 42 │ const T = { │
│ │ │ const: 42, │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Array( │ type T = number[] │ const T = { │
│ Type.Number() │ │ type: 'array', │
│ ) │ │ items: { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Object({ │ type T = { │ const T = { │
│ x: Type.Number(), │ x: number, │ type: 'object', │
│ y: Type.Number() │ y: number │ required: ['x', 'y'], │
│ }) │ } │ properties: { │
│ │ │ x: { │
│ │ │ type: 'number' │
│ │ │ }, │
│ │ │ y: { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Tuple([ │ type T = [number, number] │ const T = { │
│ Type.Number(), │ │ type: 'array', │
│ Type.Number() │ │ items: [{ │
│ ]) │ │ type: 'number' │
│ │ │ }, { │
│ │ │ type: 'number' │
│ │ │ }], │
│ │ │ additionalItems: false, │
│ │ │ minItems: 2, │
│ │ │ maxItems: 2 │
│ │ │ } │
│ │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ enum Foo { │ enum Foo { │ const T = { │
│ A, │ A, │ anyOf: [{ │
│ B │ B │ type: 'number', │
│ } │ } │ const: 0 │
│ │ │ }, { │
│ const T = Type.Enum(Foo) │ type T = Foo │ type: 'number', │
│ │ │ const: 1 │
│ │ │ }] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.KeyOf( │ type T = keyof { │ const T = { │
│ Type.Object({ │ x: number, │ anyOf: [{ │
│ x: Type.Number(), │ y: number │ type: 'string', │
│ y: Type.Number() │ } │ const: 'x' │
│ }) │ │ }, { │
│ ) │ │ type: 'string', │
│ │ │ const: 'y' │
│ │ │ }] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Union([ │ type T = string | number │ const T = { │
│ Type.String(), │ │ anyOf: [{ │
│ Type.Number() │ │ type: 'string' │
│ ]) │ │ }, { │
│ │ │ type: 'number' │
│ │ │ }] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Intersect([ │ type T = { │ const T = { │
│ Type.Object({ │ x: number │ allOf: [{ │
│ x: Type.Number() │ } & { │ type: 'object', │
│ }), │ y: number │ required: ['x'], │
│ Type.Object({ │ } │ properties: { │
│ y: Type.Number() │ │ x: { │
│ ]) │ │ type: 'number' │
│ ]) │ │ } │
│ │ │ } │
│ │ │ }, { │
│ │ │ type: 'object', |
│ │ │ required: ['y'], │
│ │ │ properties: { │
│ │ │ y: { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ }] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Composite([ │ type I = { │ const T = { │
│ Type.Object({ │ x: number │ type: 'object', │
│ x: Type.Number() │ } & { │ required: ['x', 'y'], │
│ }), │ y: number │ properties: { │
│ Type.Object({ │ } │ x: { │
│ y: Type.Number() │ │ type: 'number' │
│ }) │ type T = { │ }, │
│ ]) │ [K in keyof I]: I[K] │ y: { │
│ │ } │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Never() │ type T = never │ const T = { │
│ │ │ not: {} │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Not( | type T = string │ const T = { │
| Type.Union([ │ │ allOf: [{ │
│ Type.Literal('x'), │ │ not: { │
│ Type.Literal('y'), │ │ anyOf: [ │
│ Type.Literal('z') │ │ { const: 'x' }, │
│ ]), │ │ { const: 'y' }, │
│ Type.String() │ │ { const: 'z' } │
│ ) │ │ ] │
│ │ │ } │
│ │ │ }, { │
│ │ │ type: 'string' │
│ │ │ }] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Extends( │ type T = │ const T = { │
│ Type.String(), │ string extends number │ const: false, │
│ Type.Number(), │ true : false │ type: 'boolean' │
│ Type.Literal(true), │ │ } │
│ Type.Literal(false) │ │ │
│ ) │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Extract( │ type T = Extract< │ const T = { │
│ Type.Union([ │ string | number, │ type: 'string' │
│ Type.String(), │ string │ } │
│ Type.Number(), │ > │ │
│ ]), │ │ │
│ Type.String() │ │ │
│ ) │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Exclude( │ type T = Exclude< │ const T = { │
│ Type.Union([ │ string | number, │ type: 'number' │
│ Type.String(), │ string │ } │
│ Type.Number(), │ > │ │
│ ]), │ │ │
│ Type.String() │ │ │
│ ) │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const U = Type.Union([ │ type U = 'open' | 'close' │ const T = { │
│ Type.Literal('open'), │ │ type: 'string', │
│ Type.Literal('close') │ type T = `on${U}` │ pattern: '^on(open|close)$' │
│ ]) │ │ } │
│ │ │ │
│ const T = Type │ │ │
│ .TemplateLiteral([ │ │ │
│ Type.Literal('on'), │ │ │
│ U │ │ │
│ ]) │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Record( │ type T = Record< │ const T = { │
│ Type.String(), │ string, │ type: 'object', │
│ Type.Number() │ number │ patternProperties: { │
│ ) │ > │ '^.*$': { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Partial( │ type T = Partial<{ │ const T = { │
│ Type.Object({ │ x: number, │ type: 'object', │
│ x: Type.Number(), │ y: number │ properties: { │
│ y: Type.Number() | }> │ x: { │
│ }) │ │ type: 'number' │
│ ) │ │ }, │
│ │ │ y: { │
│ │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Required( │ type T = Required<{ │ const T = { │
│ Type.Object({ │ x?: number, │ type: 'object', │
│ x: Type.Optional( │ y?: number │ required: ['x', 'y'], │
│ Type.Number() | }> │ properties: { │
│ ), │ │ x: { │
│ y: Type.Optional( │ │ type: 'number' │
│ Type.Number() │ │ }, │
│ ) │ │ y: { │
│ }) │ │ type: 'number' │
│ ) │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Pick( │ type T = Pick<{ │ const T = { │
│ Type.Object({ │ x: number, │ type: 'object', │
│ x: Type.Number(), │ y: number │ required: ['x'], │
│ y: Type.Number() │ }, 'x'> │ properties: { │
│ }), ['x'] | │ x: { │
│ ) │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Omit( │ type T = Omit<{ │ const T = { │
│ Type.Object({ │ x: number, │ type: 'object', │
│ x: Type.Number(), │ y: number │ required: ['y'], │
│ y: Type.Number() │ }, 'x'> │ properties: { │
│ }), ['x'] | │ y: { │
│ ) │ │ type: 'number' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Index( │ type T = { │ const T = { │
│ Type.Object({ │ x: number, │ type: 'number' │
│ x: Type.Number(), │ y: string │ } │
│ y: Type.String() │ }['x'] │ │
│ }), ['x'] │ │ │
│ ) │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const A = Type.Tuple([ │ type A = [0, 1] │ const T = { │
│ Type.Literal(0), │ type B = [2, 3] │ type: 'array', │
│ Type.Literal(1) │ type T = [...A, ...B] │ items: [ │
│ ]) │ │ { const: 0 }, │
│ const B = Type.Tuple([ │ │ { const: 1 }, │
| Type.Literal(2), │ │ { const: 2 }, │
| Type.Literal(3) │ │ { const: 3 } │
│ ]) │ │ ], │
│ const T = Type.Tuple([ │ │ additionalItems: false, │
| ...Type.Rest(A), │ │ minItems: 4, │
| ...Type.Rest(B) │ │ maxItems: 4 │
│ ]) │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Object({ │ type T = { │ const R = { │
│ x: Type.Number(), │ x: number, │ $ref: 'T' │
│ y: Type.Number() │ y: number │ } │
│ }, { $id: 'T' }) | } │ │
│ │ │ │
│ const R = Type.Ref(T) │ type R = T │ │
│ │ │ │
│ │ │ │
│ │ │ │
│ │ │ │
└────────────────────────────────┴─────────────────────────────┴────────────────────────────────┘

Extended Types

TypeBox provides several extended types that can be used to produce schematics for common JavaScript constructs. These types can not be used with standard JSON schema validators; but are useful to help frame schematics for RPC interfaces that may receive JSON validated data. Extended types are prefixed with the [Extended] doc comment for convenience. The following table lists the supported types.

┌────────────────────────────────┬─────────────────────────────┬────────────────────────────────┐
│ TypeBox │ TypeScript │ Extended Schema │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Constructor([ │ type T = new ( │ const T = { │
│ Type.String(), │ arg0: string, │ type: 'object', │
│ Type.Number() │ arg1: number │ instanceOf: 'Constructor', │
│ ], Type.Boolean()) │ ) => boolean │ parameters: [{ │
│ │ │ type: 'string' │
│ │ │ }, { │
│ │ │ type: 'number' │
│ │ │ }], │
│ │ │ return: { │
│ │ │ type: 'boolean' │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Function([ │ type T = ( │ const T = { │
| Type.String(), │ arg0: string, │ type : 'object', │
│ Type.Number() │ arg1: number │ instanceOf: 'Function', │
│ ], Type.Boolean()) │ ) => boolean │ parameters: [{ │
│ │ │ type: 'string' │
│ │ │ }, { │
│ │ │ type: 'number' │
│ │ │ }], │
│ │ │ return: { │
│ │ │ type: 'boolean' │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Promise( │ type T = Promise<string> │ const T = { │
│ Type.String() │ │ type: 'object', │
│ ) │ │ instanceOf: 'Promise', │
│ │ │ item: { │
│ │ │ type: 'string' │
│ │ │ } │
│ │ │ } │
│ │ │ │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Uint8Array() │ type T = Uint8Array │ const T = { │
│ │ │ type: 'object', │
│ │ │ instanceOf: 'Uint8Array' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Date() │ type T = Date │ const T = { │
│ │ │ type: 'object', │
│ │ │ instanceOf: 'Date' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Undefined() │ type T = undefined │ const T = { │
│ │ │ type: 'null', │
│ │ │ typeOf: 'Undefined' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.RegEx(/foo/) │ type T = string │ const T = { │
│ │ │ type: 'string', │
│ │ │ pattern: 'foo' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Symbol() │ type T = symbol │ const T = { │
│ │ │ type: 'null', │
│ │ │ typeOf: 'Symbol' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.BigInt() │ type T = bigint │ const T = { │
│ │ │ type: 'null', │
│ │ │ typeOf: 'BigInt' │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Void() │ type T = void │ const T = { │
│ │ │ type: 'null' │
│ │ │ typeOf: 'Void' │
│ │ │ } │
│ │ │ │
└────────────────────────────────┴─────────────────────────────┴────────────────────────────────┘

Modifiers

TypeBox provides modifiers that allow schema properties to be statically inferred as readonly or optional. The following table shows the supported modifiers and how they map between TypeScript and JSON Schema.

┌────────────────────────────────┬─────────────────────────────┬────────────────────────────────┐
│ TypeBox │ TypeScript │ JSON Schema │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Object({ │ type T = { │ const T = { │
│ name: Type.Optional( │ name?: string │ type: 'object', │
│ Type.String() │ } │ properties: { │
│ ) │ │ name: { │
│ }) │ │ type: 'string' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Object({ │ type T = { │ const T = { │
│ name: Type.Readonly( │ readonly name: string │ type: 'object', │
│ Type.String() │ } │ properties: { │
│ ) │ │ name: { │
│ }) │ │ type: 'string' │
│ │ │ } │
│ │ │ }, │
│ │ │ required: ['name'] │
│ │ │ } │
│ │ │ │
├────────────────────────────────┼─────────────────────────────┼────────────────────────────────┤
│ const T = Type.Object({ │ type T = { │ const T = { │
│ name: Type.ReadonlyOptional( │ readonly name?: string │ type: 'object', │
│ Type.String() │ } │ properties: { │
│ ) │ │ name: { │
│ }) │ │ type: 'string' │
│ │ │ } │
│ │ │ } │
│ │ │ } │
│ │ │ │
└────────────────────────────────┴─────────────────────────────┴────────────────────────────────┘

Options

You can pass JSON Schema options on the last argument of any type. Option hints specific to each type are provided for convenience.

// String must be an email
const T = Type.String({ // const T = {
 format: 'email' // type: 'string',
}) // format: 'email'
 // }

// Mumber must be a multiple of 2
const T = Type.Number({ // const T = {
 multipleOf: 2 // type: 'number',
}) // multipleOf: 2
 // }

// Array must have at least 5 integer values
const T = Type.Array(Type.Integer(), { // const T = {
 minItems: 5 // type: 'array',
}) // minItems: 5,
 // items: {
 // type: 'integer'
 // }
 // }

Generic Types

Generic types can be created with generic functions constrained to type TSchema. The following creates a generic Vector<T> type.

import { Type, Static, TSchema } from '@sinclair/typebox'

const Vector = <T extends TSchema>(t: T) => Type.Object({ x: t, y: t, z: t })

const NumberVector = Vector(Type.Number()) // const NumberVector = {
 // type: 'object',
 // required: ['x', 'y', 'z'],
 // properties: {
 // x: { type: 'number' },
 // y: { type: 'number' },
 // z: { type: 'number' }
 // }
 // }

type NumberVector = Static<typeof NumberVector> // type NumberVector = {
 // x: number,
 // y: number,
 // z: number
 // }

const BooleanVector = Vector(Type.Boolean()) // const BooleanVector = {
 // type: 'object',
 // required: ['x', 'y', 'z'],
 // properties: {
 // x: { type: 'boolean' },
 // y: { type: 'boolean' },
 // z: { type: 'boolean' }
 // }
 // }

type BooleanVector = Static<typeof BooleanVector> // type BooleanVector = {
 // x: boolean,
 // y: boolean,
 // z: boolean
 // }

The following creates a generic Nullable<T> type.

const Nullable = <T extends TSchema>(schema: T) => Type.Union([schema, Type.Null()])

const T = Nullable(Type.String()) // const T = {
 // anyOf: [
 // { type: 'string' },
 // { type: 'null' }
 // ]
 // }

type T = Static<typeof T> // type T = string | null

Reference Types

Reference types are supported with Type.Ref. The target type must specify a valid $id.

const T = Type.String({ $id: 'T' }) // const T = {
 // $id: 'T',
 // type: 'string'
 // }

const R = Type.Ref(T) // const R = {
 // $ref: 'T'
 // }

Recursive Types

Recursive types are supported with Type.Recursive

const Node = Type.Recursive(Node => Type.Object({ // const Node = {
 id: Type.String(), // $id: 'Node',
 nodes: Type.Array(Node) // type: 'object',
}), { $id: 'Node' }) // properties: {
 // id: {
 // type: 'string'
 // },
 // nodes: {
 // type: 'array',
 // items: {
 // $ref: 'Node'
 // }
 // }
 // },
 // required: [
 // 'id',
 // 'nodes'
 // ]
 // }

type Node = Static<typeof Node> // type Node = {
 // id: string
 // nodes: Node[]
 // }

function test(node: Node) {
 const id = node.nodes[0].nodes[0].id // id is string
}

Conditional Types

Conditional types are supported with Type.Extends, Type.Exclude and Type.Extract

// TypeScript

type T0 = string extends number ? true : false // type T0 = false

type T1 = Extract<string | number, number> // type T1 = number

type T2 = Exclude<string | number, number> // type T2 = string

// TypeBox

const T0 = Type.Extends(Type.String(), Type.Number(), Type.Literal(true), Type.Literal(false))

const T1 = Type.Extract(Type.Union([Type.String(), Type.Number()]), Type.Number())

const T2 = Type.Exclude(Type.Union([Type.String(), Type.Number()]), Type.Number())


type T0 = Static<typeof T0> // type T0 = false

type T1 = Static<typeof T1> // type T1 = number

type T2 = Static<typeof T2> // type T2 = string

Template Literal Types

TypeBox supports Template Literal types using Type.TemplateLiteral. These types can be created using a simple template DSL syntax, however more complex template literals can be created by passing an array of literal and union types. The examples below show the template DSL syntax.

// TypeScript

type P = `/post/${string}/user/${number}` // type P = `/post/${string}/user/${number}`

type T = `option${'A'|'B'}` // type T = 'optionA' | 'optionB'

type R = Record<T, string> // type R = {
 // optionA: string
 // optionB: string
 // }

// TypeBox

const P = Type.TemplateLiteral('/post/${string}/user/${number}')

 // const P = {
 // type: 'string',
 // pattern: '^/post/(.*)/user/(0|[1-9][0-9]*)$'
 // }

const T = Type.TemplateLiteral('option${A|B}') // const T = {
 // pattern: '^option(A|B)$',
 // type: 'string'
 // }

const R = Type.Record(T, Type.String()) // const R = {
 // type: 'object',
 // required: ['optionA', 'optionB'],
 // properties: {
 // optionA: {
 // type: 'string'
 // },
 // optionB: {
 // type: 'string'
 // }
 // }
 // }

Indexed Access Types

TypeBox supports Indexed Access types using Type.Index. This feature provides a consistent way to access property types without having to extract them from the underlying schema representation. Indexed accessors are supported for object and tuples, as well as nested union and intersect types.

const T = Type.Object({ // const T = {
 x: Type.Number(), // type: 'object',
 y: Type.String(), // required: ['x', 'y', 'z'],
 z: Type.Boolean() // properties: {
}) // x: { type: 'number' },
 // y: { type: 'string' },
 // z: { type: 'string' }
 // }
 // }

const A = Type.Index(T, ['x']) // const A = { type: 'number' }

const B = Type.Index(T, ['x', 'y']) // const B = {
 // anyOf: [
 // { type: 'number' },
 // { type: 'string' }
 // ]
 // }

const C = Type.Index(T, Type.KeyOf(T)) // const C = {
 // anyOf: [
 // { type: 'number' },
 // { type: 'string' },
 // { type: 'boolean' }
 // ]
 // }

Rest Types

Rest parameters are supported with Type.Rest. This function is used to extract interior type elements from tuples which enables them to compose with the JavaScript spread operator .... This type can be used for tuple concatenation as well as for variadic functions.

// TypeScript

type T = [number, number] // type T = [number, number]

type C = [...T, number] // type C = [number, number, number]

type F = (...param: C) => void // type F = (
 // param0: number,
 // param1: number,
 // param2: number
 // ) => void

// TypeBox

const T = Type.Tuple([ // const T: TTuple<[
 Type.Number(), // TNumber,
 Type.Number() // TNumber
]) // ]>

const C = Type.Tuple([ // const C: TTuple<[
 ...Type.Rest(T), // TNumber,
 Type.Number() // TNumber,
]) // TNumber
 // ]>

const F = Type.Function(Type.Rest(C), Type.Void()) // const F: TFunction<[
 // TNumber,
 // TNumber,
 // TNumber
 // ], TVoid>

Unsafe Types

Use Type.Unsafe to create custom schematics with user defined inference rules.

const T = Type.Unsafe<string>({ type: 'number' }) // const T = {
 // type: 'number'
 // }

type T = Static<typeof T> // type T = string

The Type.Unsafe type can be useful to express specific OpenAPI schema representations.

import { Type, Static, TSchema } from '@sinclair/typebox'

// Nullable<T>

function Nullable<T extends TSchema>(schema: T) {
 return Type.Unsafe<Static<T> | null>({ ...schema, nullable: true })
}

const T = Nullable(Type.String()) // const T = {
 // type: 'string',
 // nullable: true
 // }

type T = Static<typeof T> // type T = string | null

// StringEnum<string[]>

function StringEnum<T extends string[]>(values: [...T]) {
 return Type.Unsafe<T[number]>({ type: 'string', enum: values })
}

const T = StringEnum(['A', 'B', 'C']) // const T = {
 // enum: ['A', 'B', 'C']
 // }

type T = Static<typeof T> // type T = 'A' | 'B' | 'C'

Type Guards

TypeBox provides a TypeGuard module that can be used for reflection and asserting values as types.

import { Type, TypeGuard } from '@sinclair/typebox'

const T = Type.String()

if(TypeGuard.TString(T)) {

 // T is TString
}

Strict

TypeBox schemas contain the Kind and Modifier symbol properties. These properties are used for type composition and reflection. These properties are not strictly valid JSON schema; so in some cases it may be desirable to omit them. TypeBox provides a Type.Strict function that will omit these properties if necessary.

const T = Type.Object({ // const T = {
 name: Type.Optional(Type.String()) // [Kind]: 'Object',
}) // type: 'object',
 // properties: {
 // name: {
 // [Kind]: 'String',
 // type: 'string',
 // [Modifier]: 'Optional'
 // }
 // }
 // }

const U = Type.Strict(T) // const U = {
 // type: 'object',
 // properties: {
 // name: {
 // type: 'string'
 // }
 // }
 // }

Values

TypeBox provides an optional utility module that can be used to perform common operations on JavaScript values. This module includes functionality to create, check and cast values from types as well as check equality, clone, diff and patch JavaScript values. This module is provided via optional import.

import { Value } from '@sinclair/typebox/value'

Create

Use the Create function to create a value from a type. TypeBox will use default values if specified.

const T = Type.Object({ x: Type.Number(), y: Type.Number({ default: 42 }) })

const A = Value.Create(T) // const A = { x: 0, y: 42 }

Clone

Use the Clone function to deeply clone a value

const A = Value.Clone({ x: 1, y: 2, z: 3 }) // const A = { x: 1, y: 2, z: 3 }

Check

Use the Check function to type check a value

const T = Type.Object({ x: Type.Number() })

const R = Value.Check(T, { x: 1 }) // const R = true

Convert

Use the Convert function to convert a value into its target type if a reasonable conversion is possible.

const T = Type.Object({ x: Type.Number() })

const R1 = Value.Convert(T, { x: '3.14' }) // const R1 = { x: 3.14 }

const R2 = Value.Convert(T, { x: 'not a number' }) // const R2 = { x: 'not a number' }

Cast

Use the Cast function to cast a value into a type. The cast function will retain as much information as possible from the original value.

const T = Type.Object({ x: Type.Number(), y: Type.Number() }, { additionalProperties: false })

const X = Value.Cast(T, null) // const X = { x: 0, y: 0 }

const Y = Value.Cast(T, { x: 1 }) // const Y = { x: 1, y: 0 }

const Z = Value.Cast(T, { x: 1, y: 2, z: 3 }) // const Z = { x: 1, y: 2 }

Equal

Use the Equal function to deeply check for value equality.

const R = Value.Equal( // const R = true
 { x: 1, y: 2, z: 3 },
 { x: 1, y: 2, z: 3 }
)

Hash

Use the Hash function to create a FNV1A-64 non cryptographic hash of a value.

const A = Value.Hash({ x: 1, y: 2, z: 3 }) // const A = 2910466848807138541n

const B = Value.Hash({ x: 1, y: 4, z: 3 }) // const B = 1418369778807423581n

Diff

Use the Diff function to produce a sequence of edits to transform one value into another.

const E = Value.Diff( // const E = [
 { x: 1, y: 2, z: 3 }, // { type: 'update', path: '/y', value: 4 },
 { y: 4, z: 5, w: 6 } // { type: 'update', path: '/z', value: 5 },
) // { type: 'insert', path: '/w', value: 6 },
 // { type: 'delete', path: '/x' }
 // ]

Patch

Use the Patch function to apply edits

const A = { x: 1, y: 2 }

const B = { x: 3 }

const E = Value.Diff(A, B) // const E = [
 // { type: 'update', path: '/x', value: 3 },
 // { type: 'delete', path: '/y' }
 // ]

const C = Value.Patch<typeof B>(A, E) // const C = { x: 3 }

Errors

Use the Errors function enumerate validation errors.

const T = Type.Object({ x: Type.Number(), y: Type.Number() })

const R = [...Value.Errors(T, { x: '42' })] // const R = [{
 // schema: { type: 'number' },
 // path: '/x',
 // value: '42',
 // message: 'Expected number'
 // }, {
 // schema: { type: 'number' },
 // path: '/y',
 // value: undefined,
 // message: 'Expected number'
 // }]

Mutate

Use the Mutate function to perform a deep mutable value assignment while retaining internal references.

const Y = { z: 1 } // const Y = { z: 1 }

const X = { y: Y } // const X = { y: { z: 1 } }

const A = { x: X } // const A = { x: { y: { z: 1 } } }


Value.Mutate(A, { x: { y: { z: 2 } } }) // const A' = { x: { y: { z: 2 } } }

const R0 = A.x.y.z === 2 // const R0 = true

const R1 = A.x.y === Y // const R1 = true

const R2 = A.x === X // const R2 = true

Pointer

Use ValuePointer to perform mutable updates on existing values using RFC6901 JSON Pointers.

import { ValuePointer } from '@sinclair/typebox/value'

const A = { x: 0, y: 0, z: 0 }

ValuePointer.Set(A, '/x', 1) // const A' = { x: 1, y: 0, z: 0 }

ValuePointer.Set(A, '/y', 1) // const A' = { x: 1, y: 1, z: 0 }

ValuePointer.Set(A, '/z', 1) // const A' = { x: 1, y: 1, z: 1 }

TypeCheck

TypeBox types target JSON Schema draft 6 so are compatible with any validator that supports this specification. TypeBox also provides a built in type checking compiler designed specifically for high performance compilation and value assertion.

The following sections detail using Ajv and TypeBox's compiler infrastructure.

Ajv

The following shows the recommended setup for Ajv.

$ npm install ajv ajv-formats --save

import { Type } from '@sinclair/typebox'
import addFormats from 'ajv-formats'
import Ajv from 'ajv'

const ajv = addFormats(new Ajv({}), [
 'date-time',
 'time',
 'date',
 'email',
 'hostname',
 'ipv4',
 'ipv6',
 'uri',
 'uri-reference',
 'uuid',
 'uri-template',
 'json-pointer',
 'relative-json-pointer',
 'regex'
])

const C = ajv.compile(Type.Object({
 x: Type.Number(),
 y: Type.Number(),
 z: Type.Number()
}))

const R = C({ x: 1, y: 2, z: 3 }) // const R = true

TypeCompiler

The TypeBox TypeCompiler is a high performance JIT compiler that transforms TypeBox types into optimized JavaScript validation routines. The compiler is tuned for fast compilation as well as fast value assertion. It is designed to serve as a validation backend that can be integrated into larger applications; but can also be used as a general purpose validator.

The TypeCompiler is provided as an optional import.

import { TypeCompiler } from '@sinclair/typebox/compiler'

Use the Compile(...) function to compile a type. Note that compilation is an expensive operation that should typically be performed once per type during application start up. TypeBox does not cache previously compiled types, so applications are expected to hold references to each compiled type for the lifetime of the application.

const C = TypeCompiler.Compile(Type.Object({ // const C: TypeCheck<TObject<{
 x: Type.Number(), // x: TNumber;
 y: Type.Number(), // y: TNumber;
 z: Type.Number() // z: TNumber;
})) // }>>

const R = C.Check({ x: 1, y: 2, z: 3 }) // const R = true

Use the Errors(...) function to produce diagnostic errors for a value. The Errors(...) function will return an iterator that if enumerated; will perform an exhaustive check across the entire value and yield any error found. For performance, this function should only be called after failed Check(...). Applications may also choose to yield only the first value to avoid exhaustive error generation.

const C = TypeCompiler.Compile(Type.Object({ // const C: TypeCheck<TObject<{
 x: Type.Number(), // x: TNumber;
 y: Type.Number(), // y: TNumber;
 z: Type.Number() // z: TNumber;
})) // }>>

const value = { }

const errors = [...C.Errors(value)] // const errors = [{
 // schema: { type: 'number' },
 // path: '/x',
 // value: undefined,
 // message: 'Expected number'
 // }, {
 // schema: { type: 'number' },
 // path: '/y',
 // value: undefined,
 // message: 'Expected number'
 // }, {
 // schema: { type: 'number' },
 // path: '/z',
 // value: undefined,
 // message: 'Expected number'
 // }]

Compiled routines can be inspected with the .Code() function.

const C = TypeCompiler.Compile(Type.String()) // const C: TypeCheck<TString>

console.log(C.Code()) // return function check(value) {
 // return (
 // (typeof value === 'string')
 // )
 // }

TypeSystem

The TypeBox TypeSystem module provides functionality to define types above and beyond the Standard and Extended type sets as well as control various assertion policies. Configurations made to the TypeSystem module are observed by both TypeCompiler and Value modules.

The TypeSystem module is provided as an optional import.

import { TypeSystem } from '@sinclair/typebox/system'

Types

Use the Type(...) function to create custom types. This function lets you specify custom value assertion logic and will return a type factory function which is used to instance the type. This function accepts two generic arguments, the first is the inference type, the second is options used to constrain the type. The following creates a Vector type.

type VectorOptions = { abs: boolean }

type Vector = { x: number, y: number }

const Vector = TypeSystem.Type<Vector, VectorOptions>('Vector', (options, value) => {
 return (
 typeof value === 'object' && value !== null &&
 'x' in value && typeof value.x === 'number' &&
 'y' in value && typeof value.y === 'number' &&
 (options.abs ? (value.x === Math.abs(value.x) && value.y === Math.abs(value.y)) : true)
 )
})

const T = Vector({ abs: true })

type T = Static<typeof T> // type T = Vector

const R1 = Value.Check(T, { x: 1, y: 1 }) // const R1 = true

const R2 = Value.Check(T, { x: 1, y: '1' }) // const R2 = false

const R3 = Value.Check(T, { x: 1, y: -1 }) // const R3 = false

Formats

Use the Format(...) function to create a custom string format. The following creates a format that checks for lowercase strings.

TypeSystem.Format('lowercase', value => value === value.toLowerCase()) // format should be lowercase

const T = Type.String({ format: 'lowercase' })

const A = Value.Check(T, 'Hello') // const A = false

const B = Value.Check(T, 'hello') // const B = true

Policies

TypeBox validates using standard JSON Schema assertion policies by default. It is possible to override some of these policies to have TypeBox assert inline with TypeScript static assertion rules. The following policy overrides are available.

// Disallow undefined values for optional properties (default is false)
//
// const A: { x?: number } = { x: undefined } - disallowed when enabled

TypeSystem.ExactOptionalPropertyTypes = true

// Allow arrays to validate as object types (default is false)
//
// const A: {} = [] - allowed in TS

TypeSystem.AllowArrayObjects = true

// Allow numeric values to be NaN or + or - Infinity (default is false)
//
// const A: number = NaN - allowed in TS

TypeSystem.AllowNaN = true

Workbench

TypeBox offers a small web based code generation tool that can be used to convert TypeScript types into TypeBox type definitions as well as a variety of other formats.

Workbench Link Here

Ecosystem

The following is a list of community packages that provide general tooling and framework support for TypeBox.

Package	Description
elysia	Fast and friendly Bun web framework
fastify-type-provider-typebox	Fastify TypeBox integration with the Fastify Type Provider
fetch-typebox	Drop-in replacement for fetch that brings easy integration with TypeBox
schema2typebox	Creating TypeBox code from JSON schemas
ts2typebox	Creating TypeBox code from Typescript types

Benchmark

This project maintains a set of benchmarks that measure Ajv, Value and TypeCompiler compilation and validation performance. These benchmarks can be run locally by cloning this repository and running npm run benchmark. The results below show for Ajv version 8.12.0 running on Node 20.0.0.

For additional comparative benchmarks, please refer to typescript-runtime-type-benchmarks.

Compile

This benchmark measures compilation performance for varying types. You can review this benchmark here.

┌────────────────────────────┬────────────┬──────────────┬──────────────┬──────────────┐
│ (index) │ Iterations │ Ajv │ TypeCompiler │ Performance │
├────────────────────────────┼────────────┼──────────────┼──────────────┼──────────────┤
│ Literal_String │ 1000 │ ' 220 ms' │ ' 6 ms' │ ' 36.67 x' │
│ Literal_Number │ 1000 │ ' 172 ms' │ ' 4 ms' │ ' 43.00 x' │
│ Literal_Boolean │ 1000 │ ' 162 ms' │ ' 4 ms' │ ' 40.50 x' │
│ Primitive_Number │ 1000 │ ' 161 ms' │ ' 6 ms' │ ' 26.83 x' │
│ Primitive_String │ 1000 │ ' 154 ms' │ ' 4 ms' │ ' 38.50 x' │
│ Primitive_String_Pattern │ 1000 │ ' 204 ms' │ ' 10 ms' │ ' 20.40 x' │
│ Primitive_Boolean │ 1000 │ ' 131 ms' │ ' 4 ms' │ ' 32.75 x' │
│ Primitive_Null │ 1000 │ ' 142 ms' │ ' 5 ms' │ ' 28.40 x' │
│ Object_Unconstrained │ 1000 │ ' 1263 ms' │ ' 29 ms' │ ' 43.55 x' │
│ Object_Constrained │ 1000 │ ' 1267 ms' │ ' 24 ms' │ ' 52.79 x' │
│ Object_Vector3 │ 1000 │ ' 382 ms' │ ' 7 ms' │ ' 54.57 x' │
│ Object_Box3D │ 1000 │ ' 1723 ms' │ ' 28 ms' │ ' 61.54 x' │
│ Tuple_Primitive │ 1000 │ ' 495 ms' │ ' 13 ms' │ ' 38.08 x' │
│ Tuple_Object │ 1000 │ ' 1271 ms' │ ' 16 ms' │ ' 79.44 x' │
│ Composite_Intersect │ 1000 │ ' 656 ms' │ ' 19 ms' │ ' 34.53 x' │
│ Composite_Union │ 1000 │ ' 529 ms' │ ' 18 ms' │ ' 29.39 x' │
│ Math_Vector4 │ 1000 │ ' 802 ms' │ ' 14 ms' │ ' 57.29 x' │
│ Math_Matrix4 │ 1000 │ ' 411 ms' │ ' 6 ms' │ ' 68.50 x' │
│ Array_Primitive_Number │ 1000 │ ' 369 ms' │ ' 6 ms' │ ' 61.50 x' │
│ Array_Primitive_String │ 1000 │ ' 369 ms' │ ' 4 ms' │ ' 92.25 x' │
│ Array_Primitive_Boolean │ 1000 │ ' 297 ms' │ ' 3 ms' │ ' 99.00 x' │
│ Array_Object_Unconstrained │ 1000 │ ' 1582 ms' │ ' 20 ms' │ ' 79.10 x' │
│ Array_Object_Constrained │ 1000 │ ' 1629 ms' │ ' 19 ms' │ ' 85.74 x' │
│ Array_Tuple_Primitive │ 1000 │ ' 652 ms' │ ' 12 ms' │ ' 54.33 x' │
│ Array_Tuple_Object │ 1000 │ ' 1587 ms' │ ' 16 ms' │ ' 99.19 x' │
│ Array_Composite_Intersect │ 1000 │ ' 1051 ms' │ ' 15 ms' │ ' 70.07 x' │
│ Array_Composite_Union │ 1000 │ ' 733 ms' │ ' 15 ms' │ ' 48.87 x' │
│ Array_Math_Vector4 │ 1000 │ ' 1071 ms' │ ' 12 ms' │ ' 89.25 x' │
│ Array_Math_Matrix4 │ 1000 │ ' 636 ms' │ ' 5 ms' │ ' 127.20 x' │
└────────────────────────────┴────────────┴──────────────┴──────────────┴──────────────┘

Validate

This benchmark measures validation performance for varying types. You can review this benchmark here.

┌────────────────────────────┬────────────┬──────────────┬──────────────┬──────────────┬──────────────┐
│ (index) │ Iterations │ ValueCheck │ Ajv │ TypeCompiler │ Performance │
├────────────────────────────┼────────────┼──────────────┼──────────────┼──────────────┼──────────────┤
│ Literal_String │ 1000000 │ ' 24 ms' │ ' 5 ms' │ ' 5 ms' │ ' 1.00 x' │
│ Literal_Number │ 1000000 │ ' 21 ms' │ ' 17 ms' │ ' 9 ms' │ ' 1.89 x' │
│ Literal_Boolean │ 1000000 │ ' 18 ms' │ ' 18 ms' │ ' 9 ms' │ ' 2.00 x' │
│ Primitive_Number │ 1000000 │ ' 25 ms' │ ' 18 ms' │ ' 9 ms' │ ' 2.00 x' │
│ Primitive_String │ 1000000 │ ' 25 ms' │ ' 17 ms' │ ' 9 ms' │ ' 1.89 x' │
│ Primitive_String_Pattern │ 1000000 │ ' 174 ms' │ ' 44 ms' │ ' 36 ms' │ ' 1.22 x' │
│ Primitive_Boolean │ 1000000 │ ' 22 ms' │ ' 17 ms' │ ' 9 ms' │ ' 1.89 x' │
│ Primitive_Null │ 1000000 │ ' 22 ms' │ ' 16 ms' │ ' 9 ms' │ ' 1.78 x' │
│ Object_Unconstrained │ 1000000 │ ' 1065 ms' │ ' 33 ms' │ ' 25 ms' │ ' 1.32 x' │
│ Object_Constrained │ 1000000 │ ' 1192 ms' │ ' 53 ms' │ ' 38 ms' │ ' 1.39 x' │
│ Object_Vector3 │ 1000000 │ ' 410 ms' │ ' 23 ms' │ ' 14 ms' │ ' 1.64 x' │
│ Object_Box3D │ 1000000 │ ' 1939 ms' │ ' 54 ms' │ ' 50 ms' │ ' 1.08 x' │
│ Object_Recursive │ 1000000 │ ' 5248 ms' │ ' 355 ms' │ ' 149 ms' │ ' 2.38 x' │
│ Tuple_Primitive │ 1000000 │ ' 163 ms' │ ' 21 ms' │ ' 13 ms' │ ' 1.62 x' │
│ Tuple_Object │ 1000000 │ ' 737 ms' │ ' 29 ms' │ ' 20 ms' │ ' 1.45 x' │
│ Composite_Intersect │ 1000000 │ ' 761 ms' │ ' 24 ms' │ ' 15 ms' │ ' 1.60 x' │
│ Composite_Union │ 1000000 │ ' 519 ms' │ ' 23 ms' │ ' 13 ms' │ ' 1.77 x' │
│ Math_Vector4 │ 1000000 │ ' 247 ms' │ ' 21 ms' │ ' 11 ms' │ ' 1.91 x' │
│ Math_Matrix4 │ 1000000 │ ' 1045 ms' │ ' 39 ms' │ ' 27 ms' │ ' 1.44 x' │
│ Array_Primitive_Number │ 1000000 │ ' 256 ms' │ ' 20 ms' │ ' 12 ms' │ ' 1.67 x' │
│ Array_Primitive_String │ 1000000 │ ' 222 ms' │ ' 21 ms' │ ' 14 ms' │ ' 1.50 x' │
│ Array_Primitive_Boolean │ 1000000 │ ' 149 ms' │ ' 22 ms' │ ' 16 ms' │ ' 1.38 x' │
│ Array_Object_Unconstrained │ 1000000 │ ' 5473 ms' │ ' 67 ms' │ ' 59 ms' │ ' 1.14 x' │
│ Array_Object_Constrained │ 1000000 │ ' 5548 ms' │ ' 130 ms' │ ' 116 ms' │ ' 1.12 x' │
│ Array_Object_Recursive │ 1000000 │ ' 21047 ms' │ ' 1710 ms' │ ' 584 ms' │ ' 2.93 x' │
│ Array_Tuple_Primitive │ 1000000 │ ' 691 ms' │ ' 35 ms' │ ' 29 ms' │ ' 1.21 x' │
│ Array_Tuple_Object │ 1000000 │ ' 3075 ms' │ ' 63 ms' │ ' 50 ms' │ ' 1.26 x' │
│ Array_Composite_Intersect │ 1000000 │ ' 3126 ms' │ ' 44 ms' │ ' 35 ms' │ ' 1.26 x' │
│ Array_Composite_Union │ 1000000 │ ' 2086 ms' │ ' 68 ms' │ ' 33 ms' │ ' 2.06 x' │
│ Array_Math_Vector4 │ 1000000 │ ' 1069 ms' │ ' 38 ms' │ ' 23 ms' │ ' 1.65 x' │
│ Array_Math_Matrix4 │ 1000000 │ ' 4559 ms' │ ' 111 ms' │ ' 88 ms' │ ' 1.26 x' │
└────────────────────────────┴────────────┴──────────────┴──────────────┴──────────────┴──────────────┘

Compression

The following table lists esbuild compiled and minified sizes for each TypeBox module.

┌──────────────────────┬────────────┬────────────┬─────────────┐
│ (index) │ Compiled │ Minified │ Compression │
├──────────────────────┼────────────┼────────────┼─────────────┤
│ typebox/compiler │ '128.0 kb' │ ' 57.0 kb' │ '2.25 x' │
│ typebox/errors │ '111.6 kb' │ ' 49.1 kb' │ '2.27 x' │
│ typebox/system │ ' 77.0 kb' │ ' 31.5 kb' │ '2.45 x' │
│ typebox/value │ '177.7 kb' │ ' 76.8 kb' │ '2.31 x' │
│ typebox │ ' 75.9 kb' │ ' 31.0 kb' │ '2.45 x' │
└──────────────────────┴────────────┴────────────┴─────────────┘

Contribute

TypeBox is open to community contribution. Please ensure you submit an open issue before submitting your pull request. The TypeBox project preferences open community discussion prior to accepting new features.

sinclairzx81/typebox: JSON Schema Type Builder with Static Type Resolution for TypeScript

TypeBox

Install

Npm

Deno

Esm

Example

Overview

Contents

Usage

Types

Standard Types

Extended Types

Modifiers

Options

Generic Types

Reference Types

Recursive Types

Conditional Types

Template Literal Types

Indexed Access Types

Rest Types

Unsafe Types

Type Guards

Strict

Values

Create

Clone

Check

Convert

Cast

Equal

Hash

Diff

Patch

Errors

Mutate

Pointer

TypeCheck

Ajv

TypeCompiler

TypeSystem

Types

Formats

Policies

Workbench

Ecosystem

Benchmark

Compile

Validate

Compression

Contribute