Puedes probar la transmisión.

 /** * Returns an async generator that yields the CSV file line-by-line. * * @param path {String} * @param options {papa.ParseConfig} */ async function* readCsvStream(path, options) { const csvStream = createReadStream(path); const parseStream = papa.parse(papa.NODE_STREAM_INPUT, options); csvStream.pipe(parseStream); for await (const chunk of parseStream) { yield chunk; } } (async () => { try { const asyncIterator = readCsvStream(`${__dirname}/cad_fi.csv`, { header: true, dynamicTyping: true, }); for await (const chunk of asyncIterator) { // You can do anything with each row of the `.csv` file here. // like saving it to a DB row by row console.log(chunk); } } catch (error) { console.error(error); } })();

O, alternativamente, puede pasar una devolución de llamada de step a la función de parse , que se llamará en cada línea, evitando así cargar todo el csv en la memoria.

 /** * Reads a CSV file. * * @param path {String} * @param options {papa.ParseConfig} */ function readCsv(csvString, stepCallback, options) { papa.parse(csvString, { ...options, step: stepCallback, }); } (async () => { // I read it from FS because it is NodeJs, but you can get the string by any means. const csv = (await readFile(`${__dirname}/cad_fi.csv`)).toString(); const data = []; const errors = []; const stepCallback = (results, parser) => { if (results?.errors?.length) { errors.push(...results.errors); } data.push(results.data); }; const papaparseOptions = { header: true, dynamicTyping: true, }; try { readCsv( csv, stepCallback, papaparseOptions, ); console.log(errors); console.log(data.length); } catch (error) { console.error(error); } })();