IPC event emitter

Minimal and fast event emitter that communicate with other process through IPC.

Getting started

Install

npm install ipc-events --save

Usage

var spawn = require('child_process').spawn;
var Ipc   = require('ipc-events');

var a = new Ipc(process);
var b = new Ipc(spawn(/* some command */, {
  stdio: [null, null, null, 'ipc']
}));

a.on('say-hello', function(data) {
  console.log(data.hello); // Hello from "b"!
});

b.on('say-hello', function(data) {
  console.log(data.hello); // Hello from "a"!
});

a.send('say-hello', {
  hello: 'Hello from "a"!'
});

b.send('say-hello', {
  hello: 'Hello from "b"!'
});

Listen `once'

function myCallback(data) {
  console.log(data.hello); // Hello from "a"!
}

// Add listener, defined to be triggered "once"
b.once('say-hello', myCallback);

// myCallback() is invoked and the listener is removed
a.send('say-hello', {
  hello: 'Hello from "a"!'
});

// myCallback() is not called because it is no longer listening on this event
a.send('say-hello', {
  hello: 'Hello from "a"!'
});

Get all listeners of an event

console.log(a.listeners('say-hello'));

Remove a listener

function myCallback(data) {
  // some code ...
}

// add
a.on('say-hello', myCallback);

// remove
a.removeListener('say-hello', myCallback);

Unit tests

ipc-events is unit tested with Unit.js

Run the tests

cd node_modules/ipc-events

npm test

LICENSE

MIT (c) 2014, Nicolas Tallefourtane.

Author

Nicolas Talle