Forward-emitter

Forward events from one Node EventEmitter to another.

Installation

npm install forward-emitter

Usage

var forward = require('forward-emitter');

// Basic forwarding
forward(src, dest);

// Forward only selected events
// In this example, only the 'connect' event is forwarded.
forward(src, dest, function (eventName) {
  return eventName === 'connect';
});

// Forward all events except exclusions
var exclusions = ['connect', 'disconnect'];
forward(src, dest, function(eventName) {
  return exclusions.indexOf(eventName) === -1;
});

How It Works

forward-emitter listens to the newListener and removeListener events, introduced in Node 0.8 and Node 0.10 respectively. When a callback is bound to an event on the destination emitter, the listener is forwarded to the source emitter.

For that reason, this module should not be used in Node < 0.10 if you plan to use removeListener.