/**
 * CSV Parse State
 *
 * Defines the ParseState type and factory function for creating
 * mutable parsing state. Also includes field building operations.
 */
import type { HeaderArray } from "../types.js";
import type { ParseConfig } from "./config.js";
/**
 * Mutable parsing state - shared between sync and streaming parsers
 */
export interface ParseState {
    lineNumber: number;
    dataRowCount: number;
    skippedDataRows: number;
    truncated: boolean;
    headerRow: HeaderArray | null;
    originalHeaders: HeaderArray | null;
    useHeaders: boolean;
    headerRowProcessed: boolean;
    renamedHeadersForMeta: Record<string, string> | null;
    currentRowStartLine: number;
    currentRowStartOffset: number;
    /** Quoted status per field. May be a shared readonly array - copy before modifying. */
    currentRowQuoted: readonly boolean[];
    currentRawRow: string;
}
/**
 * Create initial parse state with optional header configuration
 */
export declare function createParseState(config: Pick<ParseConfig, "headers" | "groupColumnsByName" | "infoOption" | "rawOption">): ParseState;
/**
 * Reset info state for next row
 */
export declare function resetInfoState(state: ParseState, trackInfo: boolean, trackRaw: boolean, nextLine: number, nextOffset: number): void;
/**
 * Get a shared array of false values for unquoted field tracking.
 * Returns a frozen shared reference for common cases to avoid per-row allocation.
 *
 * IMPORTANT: The returned array must NOT be modified. If you need to store
 * the values, make a copy: `[...getUnquotedArray(n)]` or `.slice(0, n)`.
 *
 * @param length - Number of fields in the row
 * @returns Shared frozen array (for length <= 256) or new array (for larger rows)
 */
export declare function getUnquotedArray(length: number): readonly boolean[];