lonamic
Lonamic is a flexible and extendable core for implementing authorization patterns in JavaScript applications.
It gives a sensible set of default functions and utilities, all of which can be changed out to better fit your application's needs.
Installation
npm install --save lonamic
Lonamic is written in ES2015 but includes CommonJS and UMD builds pre-compiled to ES5. You don't need to use any compiler to get started with lonamic.