The Node.js ⇆ Objective-C bridge

The npm registry can, sadly, no longer handle package names with uppercase characters… You must use the 'nodobjc' package now.
Last updated 6 years ago by tootallnate .
Repository · Bugs · Original npm · Tarball · package.json
$ cnpm install NodObjC 
SYNC missed versions from official npm registry.


The Node.jsObjective-C bridge

Build Status

NodObjC exposes the Objective-C runtime to Node.js in a high-level, easy to use fashion. It uses the BridgeSupport files to dynamically generate an API from an Objective-C "Framework", and uses node-ffi to dynamically interact with the Objective-C runtime.

Essentially, NodObjC is similar in nature to the other popular Objective-C scripting bridges:

So you can write entire Cocoa or iOS GUI applications entirely in Node.js JavaScript! Applications are interpreted at runtime through the V8 engine, rather than compiled to a machine exectuable. This has the advantage of being able to tweak code without having to recompile; excellent for rapid prototyping and development, or for those GUI applications where absolute speed is not a requirement (i.e. most). So what are you waiting for? Get to coding!


Install using npm, of course!

$ npm install NodObjC

Or add it to the "dependencies" section of your package.json file.

Hello World

var $ = require('NodObjC')

// First you import the "Foundation" framework

// Setup the recommended NSAutoreleasePool instance
var pool = $.NSAutoreleasePool('alloc')('init')

// NSStrings and JavaScript Strings are distinct objects, you must create an
// NSString from a JS String when an Objective-C class method requires one.
var string = $.NSString('stringWithUTF8String', 'Hello Objective-C World!')

// Print out the contents (toString() ends up calling [string description])
//   → Prints "Hello Objective-C World!"


Be sure to check out the full API docs.


This module offers a bi-directional bridge between Node.js and the Objective-C runtime. What does that mean exactly? Well due to the design of the Objective-C runtime, it is possible to port the entire API to other languages. There are quite a few bridges for Obj-C so one for node was a necessity.

So with this module, you get access to all of the Objective-C APIs, but you invoke them through JavaScript. Obj-C has a concept of "message passing" to invoke methods on objects. The way that you pass messages around is probably a little bit different than the kind of JavaScript you're used to:

// In JavaScript, you invoke a function on an object like:

Compared to:

// In NodObjC, you send a message to an object like:
obj('func', arg)

In Objective-C, the names of methods are part of the arguments that you pass along:

[array insertObject: obj
       atIndex: 5]

The equivalent of the above message invocation in NodObjC syntax would be:

array('insertObject', obj,
      'atIndex', 5)

So the even numbered arguments are the parts of the method name that will be invoked, and the odd numbered arguments are the Obj-C arguments themselves. In the above example, the insertObject:atIndex: function will be invoked.

In NodObjC, not only is the Objective-C runtime exposed, but so are the corresponding C functions that usually go along with these APIs (thanks to BridgeSupport). So for example, we can make an NSRect by calling the NSMakeRect() C function:

$.NSMakeRect(5, 10, 8, 30)
// -> NSRect struct

There's a plethora of other Objective-C resources and tutorials out there.

You should definitely have Apple's official Mac or iOS API docs handy at all times.

Support / Getting Involved

If you're looking for support for developing with/for NodObjC you might want to join the mailing list, and check out the #nodobjc channel in the Freenode IRC server.

Additional topics of discussion can be found on the Wiki page.

Current Tags

  • 1.0.0                                ...           latest (6 years ago)

16 Versions

  • 1.0.0 [deprecated]           ...           6 years ago
  • 0.0.15 [deprecated]           ...           7 years ago
  • 0.0.14 [deprecated]           ...           8 years ago
  • 0.0.13 [deprecated]           ...           8 years ago
  • 0.0.12 [deprecated]           ...           8 years ago
  • 0.0.11 [deprecated]           ...           8 years ago
  • 0.0.10 [deprecated]           ...           8 years ago
  • 0.0.9 [deprecated]           ...           8 years ago
  • 0.0.8 [deprecated]           ...           9 years ago
  • 0.0.7 [deprecated]           ...           9 years ago
  • 0.0.6 [deprecated]           ...           9 years ago
  • 0.0.5 [deprecated]           ...           9 years ago
  • 0.0.4 [deprecated]           ...           9 years ago
  • 0.0.3 [deprecated]           ...           9 years ago
  • 0.0.2 [deprecated]           ...           9 years ago
  • 0.0.1 [deprecated]           ...           9 years ago
Maintainers (1)
Today 0
This Week 0
This Month 0
Last Day 0
Last Week 0
Last Month 17
Dependencies (4)
Dev Dependencies (6)

Copyright 2014 - 2017 © |