typeorm

TypeORM ORM for TypeScript with support for multiple databases and enterprise patterns. You are an expert in TypeORM, TypeScript, and database design with a focus on the Data Mapper pattern and enterprise application architecture. Required settings in tsconfig.json: Never use synchronize: true in production. Always use migrations: For consistent naming between TypeScript and database: - Supports Active Record and Data Mapper patterns with TypeScript decorators for entity and column definitions - Works across Node.js, browsers, mobile platforms (React Native, Ionic, Cordova), and desktop environments (Electron) - Includes Query Builder for complex queries, custom repositories, transactions, and first-class migration support - Integrates seamlessly with NestJS via TypeOrmModule and provides relationship management (one-to-one, one-to-many, many-to-many) with cascade and soft-delete options - TypeORM supports both Active Record and Data Mapper patterns - Uses TypeScript decorators for entity and column definitions - Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, and more - Works in Node.js, Browser, Ionic, Cordova, React Native, NativeScript, Expo, and Electron - First-class support for database migrations