import { type Signal } from "@angular/core";
import type { SdSheetColumn } from "./sd-sheet-column";
import type { SdSheetColumnDef, SdSheetConfig, SdSheetHeaderDef } from "./types";
export declare function useSheetLayoutEngine(options: {
    columnControls: Signal<readonly SdSheetColumn[]>;
    config: Signal<SdSheetConfig | undefined>;
}): {
    columnDefs: Signal<SdSheetColumnDef[]>;
    hasSummary: Signal<boolean>;
    headerDefTable: Signal<SdSheetHeaderDef[][]>;
    headerDepth: Signal<number>;
    headerFeatureRowSpan: Signal<number>;
};
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