Convert JSON Config to TypeScript

Generate TypeScript types from a nested configuration object. Paste your config JSON and get complete typed interfaces ready for your TypeScript project.

100% client-side. Your data never leaves your browser. 

// Generated by DevBento — json-to-typescript
interface RootApp {
  name: string;
  version: string;
  debug: boolean;
}

interface RootDatabaseCredentials {
  user: string;
  password: string;
}

interface RootDatabase {
  host: string;
  port: number;
  credentials: RootDatabaseCredentials;
}

interface RootFeatures {
  darkMode: boolean;
  maxConnections: number;
  allowedOrigins: string[];
}

interface Root {
  app: RootApp;
  database: RootDatabase;
  features: RootFeatures;
}
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Convert JSON Config to TypeScript

Configuration objects often have deep nesting: app settings, database credentials, feature flags. This example converts a multi-level config structure into typed TypeScript interfaces so every config access is type-safe.

What You Get

The tool generates:

How to Use

  1. The example loads with a sample application config
  2. The nested structure demonstrates how deeply nested objects each get their own interface
  3. Copy the output and use it to type your config loader or settings module
  4. Replace with your actual config JSON to generate types for your project

Real-World Pattern

Application configs typically have 2-3 levels of nesting. Database sections contain credentials, feature sections contain arrays of allowed values. The path-based naming (e.g., RootDatabaseCredentials) makes it clear where each type fits in the config hierarchy. Use these types with your config validation library to catch misconfigurations at build time.