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openlayers/DEVELOPING.md
2018-11-19 13:09:55 +01:00

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# Developing
## Setting up development environment
You will obviously start by
[forking](https://github.com/openlayers/openlayers/fork) the OpenLayers repository.
### CircleCI
The CircleCI hook is enabled on the Github repository. This means every pull request
is run through a full test suite to ensure it compiles and passes the tests. Failing
pull requests will not be merged.
### Development dependencies
The minimum requirements are:
* Git
* [Node.js](http://nodejs.org/) (version 8 and above)
The executables `git` and `node` should be in your `PATH`.
To install the Node.js dependencies run
$ npm install
## Running examples
To run the examples you first need to start the dev server:
$ npm run serve-examples
Then, load <http://localhost:8080/> in your browser.
## Running tests
To run the tests once:
$ npm test
To run the tests continuously during development:
$ npm run karma
## Adding examples
Adding functionality often implies adding one or several examples. This
section provides explanations related to adding examples.
The examples are located in the `examples` directory. Adding a new example
implies creating two or three files in this directory, an `.html` file, a `.js`
file, and, optionally, a `.css` file.
You can use `simple.js` and `simple.html` as templates for new examples.