import type { StyleInfo } from 'lit/directives/style-map.js';
import type { ColumnConfiguration, GridHost } from './types.js';
/** Width of the auto-rendered selection (checkbox) column in CSS pixels. */
export declare const SELECTION_COLUMN_WIDTH = 44;
/** Width of the auto-rendered expansion (chevron) column in CSS pixels. */
export declare const EXPANSION_COLUMN_WIDTH = 40;
export declare function applyColumnWidths<T extends object>(columns: Array<ColumnConfiguration<T>>, options?: {
    showSelectionColumn?: boolean;
    showExpansionColumn?: boolean;
}): StyleInfo;
/**
 * Returns the visual render order of the columns: start-pinned columns first,
 * then unpinned columns, then end-pinned columns. Within each group the
 * original `columns` array order is preserved.
 *
 * @remarks
 * The grid uses this order for rendering, navigation, and CSS grid track widths.
 * The user-supplied `columns` array is never mutated; this returns a new array.
 */
export declare function getDisplayColumns<T extends object>(columns: Array<ColumnConfiguration<T>>): Array<ColumnConfiguration<T>>;
/**
 * Returns `'start'` for the last visible start-pinned column, `'end'` for the
 * first visible end-pinned column, or `null` otherwise. The edge column gets a
 * subtle shadow / border to separate the pinned region from the scrolling one.
 */
export declare function getPinEdge<T extends object>(displayColumns: Array<ColumnConfiguration<T>>, index: number): 'start' | 'end' | null;
export declare function autoGenerateColumns<T extends object>(grid: GridHost<T>): void;
export declare function asArray<T>(value: T | T[]): T[];
export declare function getFilterOperandsFor<T extends object>(column: ColumnConfiguration<T>): Readonly<import("../operations/filter/types.js").FilterOperands<number, import("../operations/filter/operands/number.js").NumberKeys>> | Readonly<import("../operations/filter/types.js").FilterOperands<string, import("../operations/filter/operands/string.js").StringKeys>> | Readonly<import("../operations/filter/types.js").FilterOperands<boolean, import("../operations/filter/operands/boolean.js").BooleanKeys>>;