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How to create a custom build of WinJS
In order to build WinJS, ensure that you have [git](http://git-scm.com/downloads) and [Node.js](http://nodejs.org/download/) installed.
Clone a copy of the master WinJS git repo:
git clone https://github.com/winjs/winjs.git
Change to the `winjs` directory:
Optionally, choose a stable revision to build instead of the tip of master. See the [list of releases](https://github.com/winjs/winjs/releases) for other options.
git checkout v4.4.0
Install the [grunt command-line interface](https://github.com/gruntjs/grunt-cli) globally:
npm install -g grunt-cli
> Note: You may need to use sudo (for OSX, *nix, BSD etc) or run your command shell as Administrator (for Windows) to install Grunt globally.
Grunt dependencies are installed separately in each cloned git repo. Install the dependencies with:
Edit `src/js/base.js` and `src/js/ui.js` to include only the modules that you want. Note that `WinJS/Core/_WinJS` and `WinJS/Utilities` are required.