/**
   * SvListBox - an inline single/multi-select list (WAI-ARIA listbox) with
   * roving highlight + full keyboard. Parity: Smart `smart-list-box`. Controlled
   * via `value` (scalar or array) + `onChange`. Scales to huge option sets with
   * `virtual` - windowing over the shared `createSvelteVirtualizer` (slot-keyed
   * DOM recycling), which also windows GROUPED lists and mixes row heights.
   *
   * Virtual mode uses a JS-DRIVEN scroller (like Smart): the option list does
   * NOT use native overflow scroll - a single `scrollOffset` state positions the
   * rows (`translateY`) AND drives the virtualizer window in the same reactive
   * flush. Native scroll is composited off the main thread, so it paints the
   * empty scrolled position a frame before JS can re-window (the "blank on a
   * fast thumb-drag" flash); driving the offset in JS removes that async gap.
   */
import { type Snippet } from 'svelte';
import { type ListOption, type RowHeight } from './list-option';
import { type SvEditorProps } from './editor-contract';
type Props = SvEditorProps & {
    options: ReadonlyArray<ListOption>;
    value?: string | number | ReadonlyArray<string | number> | ReadonlySet<string | number> | null;
    onChange?: (value: any) => void;
    multiple?: boolean;
    /**
     * Checklist styling: each row draws a checkbox and the selected-row accent
     * highlight is suppressed, because a list that starts fully selected (a
     * filter checklist) would otherwise paint every row. State reads off the
     * box; `aria-selected` still carries it for assistive tech.
     */
    checkbox?: boolean;
    /** Stretch to the container width instead of the default 220px. */
    block?: boolean;
    /** Visible height in rows before scrolling. */
    rows?: number;
    /** Window the list (render only visible rows) for large option sets. */
    virtual?: boolean;
    /** Row height in px - a number, or a per-option function for variable
     *  heights. Must match the rendered row height. Default 32. */
    rowHeight?: RowHeight;
    /** Height (px) of a group heading row when virtualized + grouped. Default 28. */
    groupHeaderHeight?: number;
    /** Custom per-option content. Receives the option. */
    item?: Snippet<[ListOption]>;
    /** @deprecated Use `item`. */
    itemTemplate?: Snippet<[ListOption]>;
};
declare const SvListBox: import("svelte").Component<Props, {}, "">;
type SvListBox = ReturnType<typeof SvListBox>;
export default SvListBox;