An isomorphic JavaScript authorization library for managing user permissions across frontend and backend.
CASL is an isomorphic authorization JavaScript library that restricts what resources a given user is allowed to access. It solves the problem of managing permissions across UI components, API services, and database queries by providing a scalable system that can evolve from simple claim-based to fully featured subject and attribute-based authorization.
Full-stack JavaScript/TypeScript developers building applications that require fine-grained, scalable authorization logic across frontend and backend, particularly those using frameworks like React, Vue, Angular, or Aurelia and ORMs like Mongoose or Prisma.
Developers choose CASL for its incremental adoptability, allowing them to start simple and scale authorization as needed, and its isomorphic nature with complementary packages that seamlessly integrate permissions across the entire stack. Its TypeScript foundation, small core size, and declarative rule serialization offer enhanced safety, performance, and consistency.
CASL is an isomorphic authorization JavaScript library which restricts what resources a given user is allowed to access
Open-Awesome is built by the community, for the community. Submit a project, suggest an awesome list, or help improve the catalog on GitHub.
Allows starting with simple claim-based rules and evolving to complex attribute-based authorization, as highlighted in its versatile feature description for growing applications.
Seamlessly works across frontend and backend with dedicated packages for frameworks like React, Vue, and ORMs like Mongoose and Prisma, enabling consistent permissions.
Built with TypeScript for enhanced type safety and developer experience, reducing bugs and improving code maintainability as noted in the features.
Core library is only 6KB minified and gzipped and tree-shakable, keeping bundle sizes small without sacrificing functionality.
Condition definitions rely on MongoDB operators, which can be unfamiliar or unsuitable for teams not using MongoDB, requiring learning curve or workarounds.
Official integrations are limited to specific frameworks and ORMs; unsupported technologies necessitate custom implementation, increasing development overhead.
Setting up custom condition and field matching logic, as admitted in the advanced usage section, adds complexity and maintenance burden.