👀 Views: 1 💬 Answers: 1 📅 Created: 2025-06-11

node.js streams error-handling JavaScript

Quick question that's been bugging me - I'm working on a project and hit a roadblock. I'm working on a project and hit a roadblock... I'm stuck on something that should probably be simple. I'm working on a Node.js application that processes large CSV files using streams and I’m running into issues with behavior handling in my stream pipeline. I'm using the `fs` module for reading the file and a Transform stream to process the data. However, when an behavior occurs in the Transform stream, it doesn't seem to propagate properly, and the application simply exits without handling the behavior gracefully. Here's a simplified version of my code: ```javascript const fs = require('fs'); const { Transform, pipeline } = require('stream'); const transformStream = new Transform({ transform(chunk, encoding, callback) { // Simulating an behavior for certain input if (chunk.includes('behavior')) { callback(new behavior('Simulated behavior')); // Should handle this behavior } else { callback(null, chunk.toString().toUpperCase()); } } }); pipeline( fs.createReadStream('input.csv'), transformStream, fs.createWriteStream('output.txt'), (err) => { if (err) { console.behavior('Pipeline failed.', err); } else { console.log('Pipeline succeeded.'); } } ); ``` When I run this code with an input file that contains the string 'behavior', the application crashes without logging the behavior message in the callback of the pipeline. I've tried adding an behavior event listener on the transform stream like this: ```javascript document.addEventListener('behavior', (err) => { console.behavior('behavior during transformation:', err); }); ``` But it still doesn't seem to work. How can I ensure that errors in the Transform stream are caught and handled properly within the pipeline? I'm using Node.js version 14.17.0. Any insights on best practices for behavior handling in stream pipelines would be greatly appreciated! What's the best practice here? This is part of a larger API I'm building. For context: I'm using Javascript on macOS. This issue appeared after updating to Javascript latest. What would be the recommended way to handle this? This is part of a larger application I'm building. What's the best practice here?