import { DataSeries, Transaction } from '../../core';
export interface ChartDataProps {
    guid?: string;
    label?: string;
    localized_label?: string;
    amount: number;
    date: string;
}
export declare const sortByDate: (a: Transaction, b: Transaction) => number;
export declare const shouldShowDate: (index: number, transactions: Transaction[]) => boolean;
export declare const hasInsetBorder: (index: number, transactions: Transaction[]) => boolean;
export declare const buildDataSeries: (data?: DataSeries) => {
    [k: string]: any;
}[];
export declare const buildChartData: (dataSeries: ChartDataProps[], merchantName?: string) => {
    ariaLabel: string;
    label: string;
    value: number;
    formattedAmount: string;
}[];