import { AdvancedMetricSeries } from '../ui/generated/graphql';
interface EntitiesPerMonth<T> {
    monthNr: number;
    year: number;
    date: Date;
    entities: T[];
}
export type DataPointsPerLegend = Map<string, number[]>;
export declare function getMonthName(monthNr: number): string;
/**
 * Categorize loaded entities per month
 */
export declare function groupEntitiesPerMonth<T, K extends keyof T>(entities: T[], sortableField: K, from: Date, to: Date): EntitiesPerMonth<T>[];
/**
 * Get entities from a list for given month and year
 */
export declare function getEntitiesForMonth<T, K extends keyof T>(entities: T[], date: Date, dateFilterField: K): T[];
/**
 * Map the data points per month map to the AdvancedMetricSeries array.
 *
 * E.g. `'product1', [10, 20, 30]` becomes
 * `[{ name: 'product1', values: [10, 20, 30] }]`
 * This is used to display the data in the chart.
 */
export declare function mapToSeries(dataPointsPerMonth: DataPointsPerLegend): AdvancedMetricSeries[];
export {};