import type { IUsage } from '../models';
/**
 * Compute the data for plotting the usage histogram.
 *
 * @param usages Usages
 * @param interval Histogram interval
 * @param range Range with month in 1-based scale
 * @returns Histogram data &lcub;x: [], y: []&rcub;
 */
export declare function createHistogram(usages: IUsage[], interval: number, range: {
    month: number;
    year: number;
}): {
    x: string[];
    y: number[];
};
