/**
 * Value handling for `type: 'select'` data-table columns. A select cell holds either one
 * value or an array of values (multi-value / tag columns); both facet, filter and render
 * through the same helpers so the Funnel works the same for either shape.
 */
/**
 * Filter value standing for "no value". It is `null`, not a string, so it can never
 * collide with a real option — a cell whose value is the string `'null'` stays a regular
 * option. Every other selected option is the `String()` of the cell value.
 */
export declare const EMPTY_SELECT_VALUE: null;
export type SelectFilterValue = string | typeof EMPTY_SELECT_VALUE;
/**
 * The values a select cell contributes to facets and filters: each distinct item of an
 * array, or the scalar itself. Items are distinct by their filter value (`String()`), so a
 * row counts once per option even when its array repeats an item. A missing cell (null,
 * undefined, '' or an empty array) is one `EMPTY_SELECT_VALUE`, so it facets and filters
 * as a single "empty" option.
 */
export declare function selectCellValues(value: unknown): unknown[];
/** One-of filter: the cell matches when any of its values is among the selected options. */
export declare function matchesSelectFilter(value: unknown, filterValue: SelectFilterValue[]): boolean;
export type SelectFilterOption = {
    value: SelectFilterValue;
    label: string;
    count: number;
};
/**
 * Filter options from a column's faceted unique values: sorted by label, with the empty
 * option (labelled `emptyLabel`) last.
 */
export declare function selectFilterOptions(facets: Map<unknown, number>, emptyLabel?: string): SelectFilterOption[];
/**
 * Cell text for a select value: the same distinct items the Funnel lists, joined with `, `;
 * undefined when empty.
 */
export declare function formatSelectValue(value: unknown): string | number | boolean | undefined;