The Sequelize library provides an ORM (Object-Relational-Mapper) for Node.js, written entirely in JavaScript. Provides easy mapping for MySQL, MariaDB, SQLite, PostgreSQL and SQL Server.
The Sequelize library provides an ORM (Object-Relational-Mapper) for Node.js, written entirely in JavaScript. Provides easy mapping for mysql, mariadb, sqlite, postgres and 
sql-server.
It's well maintained and has lots of built-in features for dealing with the database, including transaction support, relations, eager and lazy loading, read replication.
Features
- Schema definition
- Schema synchronization/dropping
- Easy definition of class/instance methods
- Instance saving/updating/dropping
- Asynchronous library
- Associations
- Importing definitions from single files
