implementing CSV Parsing in Node.js - Unexpected Trailing Commas Causing Issues
I'm following best practices but I'm using the `csv-parser` library (version 3.0.0) in Node.js to parse a CSV file that contains trailing commas in some of the rows. This is leading to unexpected behavior when I try to process the data. For example, a row like `"John, Doe", 30,` is causing the parser to treat the trailing comma as an additional undefined field. My parsing code looks like this: ```javascript const fs = require('fs'); const csv = require('csv-parser'); const results = []; fs.createReadStream('data.csv') .pipe(csv()) .on('data', (data) => results.push(data)) .on('end', () => { console.log(results); }); ``` The output I'm getting is: ``` [ { '"John, Doe"': '30', 'undefined': '' }, ... ] ``` To handle this, I've tried using the `trim` option in the `csv-parser`, but it doesn’t seem to resolve the trailing comma scenario. I've also looked into using the `mapHeaders` option to rename the keys, but this approach doesn't help with the additional undefined fields. Is there a way to configure `csv-parser` to ignore trailing commas, or should I preprocess the CSV file first to remove them? Any guidance or best practices for handling such cases would be greatly appreciated! I'm working on a microservice that needs to handle this. Cheers for any assistance! I recently upgraded to Javascript 3.10. Thanks for taking the time to read this!