TypeORM

What it is

TypeORM is an ORM that supports PostgreSQL, MariaDB, MySQL, SQLite, and more. It provides a powerful set of features to work with databases in TypeScript and JavaScript.

TypeORM stands out as an ORM that supports multiple databases while providing advanced features like query building and real-time subscriptions, making it ideal for complex TypeScript applications.

When it fits — and when it doesn’t

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

1. 01

   Steep learning curve for beginners

   TypeORM's extensive feature set and complex configuration options can be overwhelming for new users, especially those unfamiliar with TypeScript or ORMs.

2. 02

   Poor documentation for advanced features

   While basic usage is well-documented, more advanced topics such as custom entity managers or deep integration with middleware require digging through source code and community forums.

3. 03

   Performance overhead compared to raw SQL queries

   TypeORM abstracts database operations which can lead to slower performance in high-load scenarios, especially when dealing with complex joins or large datasets.

4. 04

   Limited support for edge-case database features

   TypeORM may not fully support all advanced features of every supported database system, leading to potential limitations in specific use-cases.

What it does well

• Support for multiple database systems including PostgreSQL, MariaDB, MySQL, and SQLite

• Entity Manager to manage entities in the application

• QueryBuilder for complex queries

• Migrations for schema changes

• Subscriptions for real-time updates

Pricing

Free tier

YesOpen source — free to use

Paid from

$0

Model

Flat rate

Enterprise plan

No

Pricing not independently confirmed — check the vendor’s page.