node-lee
Asynchronous event emitter with listener ordering.
Install
Just execute the following command:
npm install lee
It is that easy.
Test
You must install the library with --dev flag:
npm install --dev lee
and then you can run:
npm test
and more... you can check the test coverage by running:
npm run coverage
Features
This library have almost all features of require("events"), but following is different:
- No events are fired when event listeners are added/removed.
- Asynchronous Event Listeners - The event listeners can return everything that bluebird recognizes as a promise, to say that the listener is performing some asynchronous operations and it is probably not completed, yet.
- Event Listeners Order - The event listeners can be ordered by specifying dependencies. Each listener will be executed only after their dependencies complete execution, that means if those dependencies returned a promise, that promise is resolved.
Documentation
Since this library has compatible interface to require("events") you can guess most of its methods. If not, there
is API reference in the GitHub wiki.