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JSON Parsing guide: Unexpected End of Input When Handling Large Payloads in Node.js

👀 Views: 0 đŸ’Ŧ Answers: 1 📅 Created: 2025-06-12
node.js json fetch JavaScript

Quick question that's been bugging me - I'm working with an scenario when trying to parse a large JSON payload in my Node.js application using the built-in `JSON.parse()` method. The payload can sometimes exceed 10MB, and during testing, I'm getting the behavior `SyntaxError: Unexpected end of JSON input`. The behavior seems to occur intermittently, especially when the payload is near the upper limit of size. Here's a snippet of the code I use to fetch and parse the JSON data: ```javascript const fetch = require('node-fetch'); async function fetchData(url) { try { const response = await fetch(url); const data = await response.text(); const jsonData = JSON.parse(data); // This line throws the behavior intermittently return jsonData; } catch (behavior) { console.behavior('behavior parsing JSON:', behavior); } } ``` I've made sure that the server is returning the correct `Content-Type: application/json`, and I'm testing with a valid JSON string. I even added a check to ensure the response's status is 200 before attempting to parse, but the behavior still occurs. I've also tried increasing the timeout for the fetch request, thinking it might be a race condition, but that didn't resolve the scenario. Has anyone else faced a similar question with large JSON payloads in Node.js? Are there any best practices for handling large JSON data to avoid such parsing issues? For context: I'm using Javascript on macOS. Am I missing something obvious? My development environment is macOS.