Sketch : Install a file as a library from the plugin resources

sketch_addLibraryFileFromPlugin.js

function addLibraryFileFromPlugin(context) {
	  var sketch = context.api();
	  var libSourceFile = "libraries/myLibrary.sketch";  // The file with the symbols for your library; should located in the plugin's resources folder
	  var libSourcePath = context.plugin.urlForResourceNamed(libSourceFile).path();
	
	  if(libSourcePath) {
	    var libURL = NSURL.fileURLWithPath(libSourcePath);
	    var libPaneIdentifier = MSAssetLibrariesPreferencePane.identifier();
	    var libPane = MSPreferencesController.sharedController().preferencePanes().objectForKey(libPaneIdentifier);
	
	    // Add the Sketch file as a library
	    NSApp.delegate().librariesController().addAssetLibraryAtURL(libURL);
	    // Refresh the libraries pane silently
	    libPane.tableView().reloadData();
	
	    sketch.message("Library installed!");
	  }
}