shamock

Schema-validated mocks and a mock API over fetch, shaped like your real data.

Install

pnpm add shamock

Usage

import { installMock } from 'shamock'

const mock = await installMock({
  baseUrl: 'https://api.example.com',
  seed: { products: [{ id: 1, name: 'A' }] },
  timing: 0,
})

const response = await fetch('https://api.example.com/products/search', {
  method: 'POST',
  body: '{}',
})
const { data } = await response.json()

mock.restore()

Validator-agnostic

Validates against any Standard Schema implementation: Zod, Valibot, ArkType.

Mock API over fetch

search, mutate and DELETE routes served from seed data, with atomic writes and bounded inputs.

Zero dependencies

Accepts any { schema } object. No SDK, no server, Node.js 22 or later.

Ecosystem

Project	Role
nexdk	One resource grammar for REST, GraphQL and WebSocket backends.
beepr	Typed events and notification adapters.
dialectr	One query builder that compiles to lomkit, Strapi and PocketBase.

Each library works on its own. None is published to npm yet.