E-Commerce Product Data – JSON to Typedef Example

Convert complex e-commerce product JSON with variants, pricing, inventory, and reviews into clean type definitions for online store development.

What this demonstrates: This comprehensive e-commerce product example includes pricing with discounts, variants with inventory, technical specifications, review aggregations, image arrays, and SEO metadata — covering all the complex nesting patterns you'll encounter in real online store development.

Target Language

Root Type Name

JSON Input

{
  "product": {
    "id": "prod_8x7k2m",
    "name": "Wireless Noise-Cancelling Headphones",
    "slug": "wireless-nc-headphones",
    "brand": "AudioTech",
    "category": {
      "id": "cat_audio",
      "name": "Audio",
      "path": ["Electronics", "Audio", "Headphones"]
    },
    "pricing": {
      "currency": "USD",
      "basePrice": 299.99,
      "salePrice": 249.99,
      "discount": {
        "percentage": 17,
        "validUntil": "2024-04-01T00:00:00Z"
      },
      "tax": {
        "rate": 0.08,
        "included": false
      }
    },
    "variants": [
      {
        "sku": "WNC-BLK-001",
        "color": "Matte Black",
        "inStock": true,
        "quantity": 150
      },
      {
        "sku": "WNC-WHT-001",
        "color": "Pearl White",
        "inStock": true,
        "quantity": 85
      },
      {
        "sku": "WNC-BLU-001",
        "color": "Navy Blue",
        "inStock": false,
        "quantity": 0
      }
    ],
    "specs": {
      "weight": "250g",
      "batteryLife": "30 hours",
      "connectivity": ["Bluetooth 5.3", "3.5mm AUX", "USB-C"],
      "noiseCancellation": true
    },
    "reviews": {
      "averageRating": 4.7,
      "totalCount": 1284,
      "distribution": {
        "5": 890,
        "4": 250,
        "3": 100,
        "2": 30,
        "1": 14
      }
    },
    "images": [
      {
        "url": "https://cdn.example.com/products/wnc-1.jpg",
        "alt": "Front view",
        "isPrimary": true
      },
      {
        "url": "https://cdn.example.com/products/wnc-2.jpg",
        "alt": "Side view",
        "isPrimary": false
      }
    ],
    "seo": {
      "title": "Buy Wireless NC Headphones",
      "description": "Premium wireless headphones with active noise cancellation",
      "keywords": ["headphones", "wireless", "noise cancelling"]
    }
  }
}

TypeScript Output

Paste JSON on the left to generate typedefs

Supports Nested Objects and Arrays

Our converter recursively processes deeply nested JSON structures, including arrays of objects, mixed-type arrays, and multi-level object hierarchies. Each nested object gets its own named interface (TypeScript) or class (C#) with properly typed properties.

Optional Fields and Mixed Types Handled

When a field is null in your JSON, it's automatically marked as optional in TypeScript (with ?) or nullable in C#. Arrays with mixed element types produce union types or fallback to object.

How to Use This JSON to Typedef Converter

Paste JSON

Paste or type your JSON into the input area on the left.

Choose Language

Select TypeScript or C# from the dropdown.

Copy Output

Your type definitions appear instantly. Click Copy to use them.

E-Commerce Product Data – JSON to Typedef Example

Supports Nested Objects and Arrays

Optional Fields and Mixed Types Handled

How to Use This JSON to Typedef Converter

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