However, we are in the process of changing our code style (see issue [#456](https://github.com/openseadragon/openseadragon/issues/456)), so avoid spaces inside parentheses and square brackets. Note that we use four spaces per indentation stop. For easier setup you can also install [EditorConfig](http://editorconfig.org/) if your IDE is supported. For more thoughts on code style, see [idiomatic.js](https://github.com/rwldrn/idiomatic.js/).
When fixing bugs and adding features, when appropriate please also:
* Update related doc comments (we use [JSDoc 3](http://usejsdoc.org/))
* Add/update related unit tests
If you're new to the project, check out our [good first bug](https://github.com/openseadragon/openseadragon/issues?labels=good+first+bug&page=1&state=open) issues for some places to dip your toe in the water.
If you're new to open source in general, check out [GitHub's open source intro guide](https://guides.github.com/overviews/os-contributing/).
### First Time Setup
All command-line operations for building and testing OpenSeadragon are scripted using [Grunt](http://gruntjs.com/) which is based on [Node.js](http://nodejs.org/). To get set up:
1. Install Node, if you haven't already (available at the link above)
1. Install the Grunt command line runner (if you haven't already); on the command line, run `npm install -g grunt-cli`
1. Clone the openseadragon repository
1. On the command line, go in to the openseadragon folder
1. Run `npm install`
You're set, all development dependencies should have been installed and the project built...
continue reading for build and test instructions.
### Building from Source
To build, just run (on the command line, in the openseadragon folder):
grunt
If you want Grunt to watch your source files and rebuild every time you change one, use:
grunt watch
To have it watch your source files and also run a server for you to test in:
grunt dev
The built files appear in the `build` folder.
If you want to build tar and zip files for distribution (they will also appear in the `build` folder), use:
grunt package
Note that the `build` folder is masked with .gitignore; it's just for your local use, and won't be checked in to the repository.
You can also publish the built version to the site-build repository. This assumes you have cloned it next to this repository. The command is:
grunt publish
... which will delete the existing openseadragon folder, along with the .zip and .tar.gz files, out of the site-build folder and replace them with newly built ones from the source in this repository; you'll then need to commit the changes to site-build.
### Testing
Our tests are based on [QUnit](http://qunitjs.com/) and [PhantomJS](http://phantomjs.org/); they're both installed when you run `npm install`. To run on the command line:
grunt test
If you wish to work interactively with the tests or test your changes:
grunt connect watch
and open `http://localhost:8000/test/test.html` in your browser.
Another good page, if you want to interactively test out your changes, is `http://localhost:8000/test/demo/basic.html`.
You can also get a report of the tests' code coverage:
grunt coverage
The report shows up at `coverage/html/index.html` viewable in a browser.
