in src/visual.ts [408:416]
private static updateOrientation(settings: BulletchartSettings): void {
if (settings && settings.orientation && settings.orientation.orientation) {
const noSpaceOrientation: string = settings.orientation.orientation.toString().replace(" ", "");
if (BulletChartOrientation[noSpaceOrientation]) {
settings.orientation.orientation = BulletChartOrientation[noSpaceOrientation];
}
}
}