import { Formatter } from '../../../../core/types/formatter.js';
import { HistogramBin, WeakMapBins } from '../../../types/histogram.js';
/**
 * Get a formatted text to the Tooltip header
 * @param binsMap - A Weakmap of bins metadata
 * @param bin - The Histogram bin data set
 * @param formatter - The formatter to return a string based an raw bin data
 * @param preposition - The internationalized proposition to be interpolated
 * @returns A interpolated string to be shown in the tooltip header
 **/
export declare const getHeaderLabel: (binsMap: WeakMapBins, bin: HistogramBin, formatter: Formatter, preposition: string) => string;