Hierarchical Role-Based Access Control for Node.js

• ⏱ Lightweight
• 🔥 Blazing Fast
• ⚡️️ Zero dependency

Features

• Focused on operations
• Scalable
• Each role is given specific access rights for every operation
• High granularity in assigning rights

Thanks

This project scaffold was built with a modified version of webpack-library-starter

Thanks to Karl Düüna (DeadAlready) and his awesome post on medium

Getting Started

Install

yarn add @rbac/rbac or npm install @rbac/rbac

RBAC is a curried function thats initially takes an object with configurations,
then returns another function that takes an object with roles,
finally returns an object that holds “can” property that is a function.

You can use it in many ways, below is one of them:

Setup RBAC config

Property	Type	Params	Default	Description
logger	Function	role: String operation: String result: Boolean	defaultLogger	Function that logs operations to console
enableLogger	Boolean		true	Enable or disable logger

Creating some roles

RBAC expects an object with roles as property names.

Property	Type	Example	Description
can	Array	['products:*']	Array of strings, list of operations that user can do, since 1.1.0 also support glob
when	Function or Promise	(params , done ) => done (null , true )	Optional Promise that should resolve in Truthy or Falsy or Callback function that receives params and done as properties, should return done passing errors, and result
inherits	Array	['user']	Optional Array of strings, list of roles inherited by this role

IMPORTANT! “when” property should be either a Callback function that receives params and done or a Promise that should resolve in Truthy or Falsy values. Example:

const roles = {
  supervisor: {
    can: [{ name: 'products:find', when: (params, done) => {
      // done receives error as first argument and Truthy or Falsy value as second argument
      done(error, false);
    }}]
  },
  admin: {
    can: [{name: 'products:*', when: new Promise((resolve) => {
      resolve(true);
    })}]
  }
};

Check if user can do some operation

Param	Type	Example	Description
First	String	'admin'	Array of strings, list of operations that user can do
Second	String, Glob (Wildcard), Regex	'products:find'	Operation to validate
Third	Any	{registered: true}	Optional Params that will flow to “when” callback Function

Want more? Check out the examples folder.

Roadmap

• [X] Wildcard support
• [X] Regex support
• [ ] Update roles in runtime

Contributing

Contributions are welcome!

1. Build RBAC

• Run yarn install to get RBAC’s dependencies
• Run yarn build to produce minified version of RBAC.

2. Development mode

• Having all the dependencies installed run yarn dev. This command will generate a non-minified version of your library and will run a watcher so you get the compilation on file change.

3. Running the tests

• Run yarn test

4. Scripts

• yarn build - produces production version of your library under the lib folder
• yarn dev - produces development version of your library and runs a watcher
• yarn test - well … it runs the tests 😃
• yarn test:watch - same as above but in a watch mode

License

This project is under MIT License [https://opensource.org/licenses/MIT]