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Dev.to
6/4/2026
I built a tool that generates TypeScript fixtures from interfaces and Zod schemas

I built a tool that generates TypeScript fixtures from interfaces and Zod schemas

Short summary

FixtureKit is a free, browser-based tool that generates TypeScript test fixtures from interfaces and Zod schemas using deterministic hashing for reproducible mock data. It supports nested objects, arrays, enums, unions, and up to 5 simultaneous fixtures without backend or eval. Available at fixture-kit.vercel.app with source on GitHub; eliminates manual boilerplate for tests, Storybook, and development.

  • •Auto-generates TypeScript fixtures from interfaces and Zod schemas
  • •Uses deterministic hashing for reproducible, committable mock data
  • •Runs entirely in browser with no backend or eval required

Generated with AI, which can make mistakes.

#product-launch#open-source
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