/**
 * worker.ts — Worker Thread code for csv-super Pro multi-threading.
 *
 * This file runs in a SEPARATE thread context — it cannot access
 * variables, imports, or state from the main thread.
 *
 * Communication protocol:
 *   Main → Worker: WorkerTask (via postMessage)
 *   Worker → Main: WorkerMessage (batch | done | error)
 *
 * Each worker receives a byte range [start, end] of the CSV file
 * and parses its portion independently.
 *
 * Boundary handling:
 * - The first worker starts at byte 0 (includes the header row).
 * - Workers 2..N start at their assigned byte, then skip forward
 *   to the next complete line to avoid splitting a row mid-way.
 * - The header is parsed once by worker 0 and broadcast to others.
 */
import type { BatchResult } from '../types/index.js';
export interface WorkerTask {
    taskId: number;
    start: number;
    end: number;
    batchSize: number;
    headers: string[] | null;
}
export type WorkerMessage = {
    type: 'batch';
    taskId: number;
    batch: BatchResult;
} | {
    type: 'done';
    taskId: number;
    totalRows: number;
} | {
    type: 'error';
    taskId: number;
    message: string;
    stack?: string;
} | {
    type: 'header';
    taskId: number;
    headers: string[];
};
//# sourceMappingURL=worker.d.ts.map