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typeorm/typeorm ★ 36661 6677 APPLICATION

TypeORM is a TypeScript ORM for Node.js that maps classes (entities) to database tables. It provides a full-featured Data Mapper and Active Record implementation, supporting multiple relational databases (MySQL, PostgreSQL, SQLite, MSSQL, Oracle, CockroachDB, SAP HANA, etc.) and MongoDB. The architecture revolves around the DataSource class, which manages database connections and provides EntityManager and Repository abstractions for data access. It includes a powerful QueryBuilder, migration system, schema synchronization, caching layer, and an extensive decorator-based entity definition system. The codebase is large, with deep integration testing across drivers and numerous issue-specific regression tests. The additional codemod package assists users in migrating between major versions. Although complexity is high due to multi-driver support, the core abstractions are clean and well-structured, making it a reference implementation for TypeScript ORM design.

RATING: 9.6/10 MAINT: active DRIFT: low
#orm #typescript #database #query-builder #migrations #decorators #active-record #javascript #typeorm #mysql #mariadb #postgresql #sqlite #sqlserver #data-mapper #cockroachdb #hacktoberfest
▸ 5 reusable components found
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