import { FieldStringifier } from '../field-stringifier';
import { Field } from '../record';
export declare abstract class CsvStringifier<T> {
    private readonly fieldStringifier;
    private readonly recordDelimiter;
    constructor(fieldStringifier: FieldStringifier, recordDelimiter?: string);
    getHeaderString(): string | null;
    stringifyRecords(records: IterableIterator<T> | T[]): string;
    protected abstract getRecordAsArray(_record: T): Field[];
    protected abstract getHeaderRecord(): string[] | null | undefined;
    private getCsvLine;
    private joinRecords;
}