https://developers.soundcloud.com/docs/api/sdks#javascript
make build
This will build and install node from source. Please be patient. :)
By default, the SDK is built into build/sdk/sdk-VERSION.js. Take a look at webpack.config.js for details.
npm start
This will run webpack with a watcher. The sdk will be rebuilt when you save changes in src.
In addition, webpack will start a development server on http://localhost:8080/. This serves the files in the examples/ folder.
make test
The test suite uses Karma to execute the tests in Chrome, Firefox, and Safari if available.