noqq/dist/workers/csv.sample.worker.js

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import { parentPort, workerData } from "worker_threads";
import fs from "fs";
const { parse } = await import("fast-csv");
if (!parentPort) {
    throw new Error("This script must be run as a worker.");
}
const { filePath } = workerData;
fs.createReadStream(filePath)
    .pipe(parse({ headers: true, ignoreEmpty: true }))
    .on("data", (row) => {
    parentPort.postMessage(Object.keys(row));
    stream.destroy();
})
    .on("error", (error) => parentPort.postMessage({ error }));