TypeORM is an ORM for TypeScript and JavaScript that enables working with databases using either Active Record or Data Mapper patterns. It supports a wide range of databases (MySQL, PostgreSQL, MariaDB, SQLite, MS SQL, Oracle, and more), and provides decorators for declarative entity definitions, a repository and custom repository API, a fluent query builder, relations with eager and lazy loading, and built‑in support for migrations, transactions, and seeds. The framework integrates well with frameworks like NestJS and Express, and includes a CLI for generation, migrations, and migrations execution.

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TypeORM

ORM for TypeScript/JavaScript with decorators, migrations, and models.

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