import { CSVParserParseOptions, CSVProcessingOptions, CSVRecord } from '../../../core/types';
import { createCSVRecordAssembler } from '../../api/model/createCSVRecordAssembler';
import { FlexibleStringCSVLexer } from '../FlexibleStringCSVLexer';
/**
 * Base class for String CSV Parsers.
 * Provides common implementation for both object and array output formats.
 *
 * @template Header - The type of the header row
 * @template Format - Output format: 'object' or 'array'
 *
 * @remarks
 * This is an internal base class. Use FlexibleStringObjectCSVParser or
 * FlexibleStringArrayCSVParser for concrete implementations, or use the
 * createStringCSVParser() factory function for type-safe instantiation.
 *
 * Uses {@link CSVProcessingOptions} which excludes execution strategy (engine).
 * Low-level parsers focus on CSV processing logic only.
 */
export declare abstract class BaseStringCSVParser<Header extends ReadonlyArray<string>, Format extends "object" | "array"> {
    protected readonly lexer: FlexibleStringCSVLexer;
    protected readonly assembler: ReturnType<typeof createCSVRecordAssembler>;
    constructor(options?: CSVProcessingOptions<Header>);
    /**
     * Parse a chunk of CSV string data
     *
     * @param chunk - CSV string chunk to parse (optional for flush)
     * @param options - Parse options
     * @returns Iterable iterator of parsed CSV records
     */
    parse(chunk?: string, options?: CSVParserParseOptions): IterableIterator<CSVRecord<Header, Format>>;
}