import { CaseMapper } from "./CaseMapper.js";
import { RR0Context } from "../../RR0Context.js";
export declare class CsvMapper<S> implements CaseMapper<RR0Context, S, string> {
    readonly sep: string;
    readonly escapeStr: string;
    readonly prefix: string;
    protected maxLevel: number;
    readonly fields: Set<string>;
    constructor(sep?: string, escapeStr?: string, prefix?: string, maxLevel?: number);
    readonly fieldMapper: (context: RR0Context, key: string, value: any, sourceTime: Date, level?: number) => string;
    /**
     * Map a case to a CSV row.
     *
     * @param context
     * @param sourceCase
     * @param sourceTime
     * @param level
     */
    map(context: RR0Context, sourceCase: S, sourceTime: Date, level?: number): string;
    /**
     * Reduce a set of cases to a CSV string.
     *
     * @param context
     * @param sourceCases
     * @param sourceTime
     */
    mapAll(context: RR0Context, sourceCases: S[], sourceTime: Date): string;
    escape(value: string, force?: boolean): string;
    /**
     * Converts CSV contents to a list of cases.
     *
     * @param data
     * @param headers The headers info to fill, to keep CSV columns order.
     */
    parse(data: string, headers?: string[]): S[];
}