Interface Notification

interface Notification {
    active: boolean;
    console: boolean;
    element?: HTMLLIElement;
    error?: Error;
    id: number;
    message: string;
    pct: number;
    permanent: boolean;
    progress: boolean;
    remove?: () => void;
    timestamp: number;
    type: string;
    update?: (pct: number) => void;
}