declare function LocalStatsCollector( stream: unknown, interval: unknown, callback: unknown ): void; declare class LocalStatsCollector { constructor( stream: unknown, interval: unknown, callback: unknown ); start: () => void; stop: () => void; static isLocalStatsSupported: () => boolean; } // TODO: check this definition - it looks like an old school class but might be a mixin export default LocalStatsCollector;