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Massive.js is a data mapper for Node.js that goes all in on PostgreSQL and fully embraces the power and flexibility of the SQL language and relational metaphors. Providing minimal abstractions for the interfaces and tools you already use, its goal is to do just enough to make working with your data as easy and intuitive as possible, then get out of your way.
Massive is not an object-relational mapper (ORM)! It doesn't use models, it doesn't track state, and it doesn't limit you to a single entity-based metaphor for accessing and persisting data. Massive connects to your database and introspects its schemas to build an API for the data model you already have: your tables, views, functions, and easily-modified SQL scripts.
Here are some of the highlights:
decomposeoption allows you to map the results of complex views and scripts to nested object trees.
db.withTransactionto execute a callback with full Massive API support in a transaction scope, getting a promise which fulfills if it commits or rejects if it rolls back.
npm i massive --save
Documentation and API docs are at MassiveJS.org.
If you need a callback-based API, install Massive.js v2:
npm install massive@2
Documentation for Massive.js 2.x is at readthedocs.