export interface EdgeBox {
    top: number;
    right: number;
    bottom: number;
    left: number;
}
export declare function blockingLeftEdge(band: EdgeBox, neighbours: EdgeBox[]): number;
export declare function helperRowMaxWidth(fieldLeft: number, fieldWidth: number, limitRight: number): number | undefined;
export declare function measureHelperRowMaxWidth(field: HTMLElement, helperRow: HTMLElement): number | undefined;