import { TableColumnDef, TableColumnGroup, TableColumnGroupNode, TableColumnNode, TableComponentProps } from './report-definition-types';
export declare function isLeafColumn(node: TableColumnNode): node is TableColumnDef;
export declare function isGroupColumn(node: TableColumnNode): node is TableColumnGroupNode;
export declare function flattenColumns(tree: TableColumnNode[]): TableColumnDef[];
export declare function getColumnTreeDepth(tree: TableColumnNode[]): number;
export declare function getLeafCountForNode(node: TableColumnNode): number;
export declare function findColumnNodeById(tree: TableColumnNode[], id: string): TableColumnNode | null;
export declare function updateColumnNodeInTree(tree: TableColumnNode[], id: string, updater: (node: TableColumnNode) => TableColumnNode): TableColumnNode[];
export declare function removeColumnNodeFromTree(tree: TableColumnNode[], id: string): TableColumnNode[];
export declare function insertColumnNodeUnderParent(tree: TableColumnNode[], parentId: string | null, node: TableColumnNode, index?: number): TableColumnNode[];
/**
 * Migrate a legacy TableComponentProps (flat `columns` + `columnGroups` with columnIds)
 * into the new recursive `columnTree`. Non-destructive: both shapes stay on the props
 * but the renderer always reads `columnTree`.
 */
export declare function getEffectiveColumnTree(p: TableComponentProps): TableColumnNode[];
export declare function legacyColumnsToTree(columns: TableColumnDef[], columnGroups?: TableColumnGroup[]): TableColumnNode[];
export declare function columnTreeToLegacy(tree: TableColumnNode[]): {
    columns: TableColumnDef[];
    columnGroups: TableColumnGroup[];
};