truefalsenull (tfn)

A small module designed to make behavior-based access control easier.

Installation

To install the stable version:

npm install --save truefalsenull

One interface for all of your authorization logic

TFN implements the strategy pattern for making auth decisions. Each strategy (a function) can return one of three values: true, false, or null. When a strategy function returns true or false, tfn immediately returns the result. If null is returned, tfn continues on. If it reaches the end and the result is still null, then tfn returns null to the client code.