export type PopupMenuItem<T> = {
    value: T;
    label: string;
    description?: string;
    labelHighlightRanges?: readonly {
        start: number;
        end: number;
    }[];
    descriptionHighlightRanges?: readonly {
        start: number;
        end: number;
    }[];
};
export type VisiblePopupMenuItem<T> = PopupMenuItem<T> & {
    index: number;
    selected: boolean;
};
export declare class PopupMenu<T> {
    readonly maxVisibleRows: number;
    items: PopupMenuItem<T>[];
    selectedIndex: number;
    scrollOffset: number;
    open: boolean;
    constructor(options: {
        maxVisibleRows: number;
    });
    setItems(items: readonly PopupMenuItem<T>[]): void;
    openWithItems(items: readonly PopupMenuItem<T>[]): void;
    close(): void;
    selectedItem(): PopupMenuItem<T> | undefined;
    moveSelection(delta: number): void;
    scroll(delta: number): void;
    visibleItems(): VisiblePopupMenuItem<T>[];
    maxScrollOffset(): number;
    private ensureSelectedVisible;
}
export declare const TOAST_KINDS: readonly ["success", "error", "warning", "info"];
export type ToastKind = (typeof TOAST_KINDS)[number];
export type ToastVariant = "compact" | "dialog";
export type ToastState = {
    message: string;
    kind: ToastKind;
    variant?: ToastVariant;
};
export type ToastEntry = ToastState & {
    id: number;
    createdAt: number;
};
export type ToastNotifier = {
    show(message: string, kind?: ToastKind): void;
    success(message: string): void;
    error(message: string): void;
    warning(message: string): void;
    info(message: string): void;
};
export declare function isToastKind(value: unknown): value is ToastKind;
export declare class Toast {
    private readonly entries;
    private nextId;
    show(message: string, kind?: ToastKind, options?: {
        variant?: ToastVariant;
    }): number;
    hide(id?: number): void;
    get state(): ToastState | undefined;
    get visibleStates(): readonly ToastEntry[];
    entry(toastId: number): ToastEntry | undefined;
    get visible(): boolean;
}