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Infers JSON Schemas and Type Definitions from example JSON

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triggerdotdev/schema-infer

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Infers JSON Schemas and Type Definitions from example JSON

Features

  • Written in typescript
  • Inspired byjtd-infer
  • Generate JSON schema documents from example data
  • Supports most string formats throughjson-infer-types
    • Date and times
    • URIs
    • Email Addresses
    • Hostnames
    • IP Addresses
    • uuids
  • Available as a CLI and a library
  • Supports snapshotting and restoring inference sessions

Usage

import{inferSchema}from"@jsonhero/schema-infer";inferSchema({id:"abeb8b52-e960-44dc-9e09-57bb00d6b441",name:"Eric",emailAddress:"eric@example.com",website:"https://github.com/ericallam",joined:"2022-01-01",})toJSONSchema();

Infers the following JSON schema:

{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties": {"id": {"type":"string","format":"uuid" },"name": {"type":"string" },"emailAddress": {"type":"string","format":"email" },"website": {"type":"string","format":"uri" },"joined": {"type":"string","format":"date" }  },"required": ["id","name","emailAddress","website","joined"]}

Examples

Roadmap

  • Add support for hints for discriminators (tagged unions), value-only schemas, and enums
  • Add support forJSON Typedefs
  • Add "verbose" mode to include$id,examples, etc.

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Infers JSON Schemas and Type Definitions from example JSON

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