Node.js ORM: TypeORM vs Sequelize

What are the main differences between TypeORM and Sequelize?

TypeORM is a TypeScript-based ORM that supports Active Record and Data Mapper patterns, while Sequelize is a promise-based ORM for Node.js that primarily uses the Active Record pattern. TypeORM offers better TypeScript support, while Sequelize has a more mature ecosystem.

Which one is better for a new project?

It depends on your project's requirements. If you're using TypeScript and need advanced features like migrations and relations, TypeORM might be better. If you prefer a simpler setup and a larger community, Sequelize could be the way to go.

Can you give examples of when to use each?

Use TypeORM when building a TypeScript application with complex data relationships. Choose Sequelize for quick prototypes or when working with JavaScript and needing a straightforward ORM.

What are the performance differences between them?

Performance can vary based on use cases, but generally, TypeORM may have a slight edge in TypeScript-heavy applications due to its optimizations. Sequelize is well-optimized for simpler queries but can be slower with complex relationships.