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javascriptjsoneventsnode.js

Listen to All Emitted Events in Node.js

In Node.js is there any way to listen to all events emitted by an EventEmitter object?

e.g., can you do something like...

event_emitter.on('',function(event[, arg1][, arg2]...) {}

The idea is that I want to grab all of the events spit out by a server side EventEmitter, JSON.stringify the event data, send it across a websockets connection, reform them on the client side as an event, and then act on the event on the client side.

Solution

  • As mentioned this behavior is not in node.js core. But you can use hij1nx's EventEmitter2:

    https://github.com/hij1nx/EventEmitter2

    It won't break any existing code using EventEmitter, but adds support for namespaces and wildcards. For example:

    server.on('foo.*', function(value1, value2) {
  console.log(this.event, value1, value2);
});