Generate TypeScript Types from Database Records

Convert JSON-exported database records or ORM query results into TypeScript interfaces for data layer typing.

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Root interface name

JSON input

TypeScript output

export interface User {
  id: number;
  name: string;
  email: string;
  isActive: boolean;
  score: number;
  tags: string[];
  address?: null;
}

export interface Root {
  user: User;
  createdAt: string;
  version: number;
}

Database tips

🗄️

Export a sample row from your database as JSON and generate a TypeScript interface that matches the record shape — ready to use in your repository layer.

💡

For Prisma, Drizzle, or TypeORM users: generated interfaces can serve as documentation or as a starting point for manually defined model types.

🔢

Database timestamps often come as strings in JSON ("2024-01-15T10:30:00Z"). Generated interfaces use "string" — consider manually changing these to "Date" in your codebase.

🧩

Relational data joined into a nested JSON object (e.g., user.orders[]) generates nested interfaces that mirror your join query structure automatically.