如何使用Node-CSV乘以和跳过行通过管道传输流

npm install csv

const csv = require('csv');
const fs = require('fs');

const readStream = fs.createReadStream('path/to/input.csv');

const writeStream = fs.createWriteStream('path/to/output.csv');

const parser = csv.parse();

parser.on('skip', (count) => {
  if (count < 3) {
    parser.resume();
  }
});

parser.on('data', (row) => {
  row[1] *= 2;
  parser.pause();
  parser.emit('record', row);
});

parser.pipe(writeStream);

readStream.pipe(parser);

const csv = require('csv');
const fs = require('fs');

const readStream = fs.createReadStream('path/to/input.csv');
const writeStream = fs.createWriteStream('path/to/output.csv');

const parser = csv.parse();

parser.on('skip', (count) => {
  if (count < 3) {
    parser.resume();
  }
});

parser.on('data', (row) => {
  row[1] *= 2;
  parser.pause();
  parser.emit('record', row);
});

parser.pipe(writeStream);
readStream.pipe(parser);