json-to-schema-generator

⚠️ Status: Stable | 📦 Version: 1.0.0 | 🧩 Dependencies: Zero

A lightweight, zero-dependency Node.js utility that dynamically generates standard JSON Schema (Draft-07 style) from any valid JavaScript/JSON object. It recursively processes nested structural objects, maps array types, and uses smart primitives deduction.

🚀 Features

• ⚡ Zero Dependencies: Keeps your production bundles fast, ultra-lightweight, and free of security dependency hell.
• 🧠 Smart Type Extraction: Distinguishes between integers and standard floating-point number values via modern JavaScript validations.
• 🌲 Deep Recursion: Safely walks down deeply-nested complex arrays, objects, and key pairs.
• 📋 Auto-Enforced Validation: Instantly maps structural discovery to strict required rule blocks for safe validation strategies.

📦 Installation

To save this package in your production project pipeline, run:

npm i json-to-schema-generator-v2

Usage

const generateSchema = require('json-to-schema-generator-v2');

const payload = {
  id: 4501,
  name: "Enterprise Service Module",
  isActive: true,
  metrics: {
    latency: 14.2,
    retries: 3
  },
  tags: ["cloud", "backend"]
};

// Generate standard Draft-07 JSON Schema
const schema = generateSchema(payload);

console.log(JSON.stringify(schema, null, 2));

Example Output

{
  "type": "object",
  "properties": {
    "id": { "type": "integer" },
    "name": { "type": "string" },
    "isActive": { "type": "boolean" },
    "metrics": {
      "type": "object",
      "properties": {
        "latency": { "type": "number" },
        "retries": { "type": "integer" }
      },
      "required": ["latency", "retries"]
    },
    "tags": {
      "type": "array",
      "items": { "type": "string" }
    }
  },
  "required": ["id", "name", "isActive", "metrics", "tags"],
  "title": "GeneratedSchema",
  "$schema": "[http://json-schema.org/draft-07/schema#](http://json-schema.org/draft-07/schema#)"
}