import type ColumnDef from "../types/ColumnDef";
import type { SimpleTableConfig } from "../types/SimpleTableConfig";
/**
 * Consumer-facing config input. Preferred prop names only — no legacy aliases.
 */
export type SimpleTableConfigInput = SimpleTableConfig;
/** Pass-through for column trees (kept for call-site stability / future transforms). */
export declare function normalizeColumnDef(header: ColumnDef): ColumnDef;
export declare function normalizeColumnDefs(headers: ColumnDef[]): ColumnDef[];
/**
 * Validate and normalize config. Requires `columns`.
 */
export declare function normalizeConfig(input: SimpleTableConfigInput): SimpleTableConfig;
/**
 * Normalize a partial update patch.
 */
export declare function normalizeConfigPatch(patch: Partial<SimpleTableConfigInput>): Partial<SimpleTableConfig>;