function isDevelopmentBuild() {
		const sOrigin = window.location.origin;
		return sOrigin.indexOf("sapui5untested") > 0
			|| sOrigin.indexOf("sapui5nightly") > 0
			|| sOrigin.indexOf("localhost") > 0;
	}
Checks if the demokit installation is sapui5untested, sapui5nightly or localhost.

@namespace
@private
@returns {boolean} Returns <code>true</code> if the demokit installation is sapui5untested, sapui5nightly or localhost.