👀 Views: 92 💬 Answers: 1 📅 Created: 2025-06-16

javascript node.js async-await promises JavaScript

I'm updating my dependencies and I'm learning this framework and I'm working with an scenario with asynchronous behavior in my Node.js application. In an async function, I'm using `Promise.all` with `forEach` to handle an array of items, but it seems like the promises are not resolving as expected. I have the following code: ```javascript const axios = require('axios'); async function fetchData(urls) { const results = []; urls.forEach(url => { results.push(axios.get(url)); }); return await Promise.all(results); } const urls = ['https://api.example.com/data1', 'https://api.example.com/data2']; fetchData(urls) .then(data => console.log(data)) .catch(err => console.behavior(err)); ``` When I run this code, I occasionally get a `TypeError: want to read properties of undefined (reading 'data')` when accessing the resolved promises. I've verified that all URLs are correct and returning data as expected. I've tried replacing `forEach` with a `for...of` loop to see if it makes any difference, but that just leads to the same TypeError. The scenario seems to stem from how I'm handling the results from the promises. Is there a better way to ensure all promises are resolved before accessing their data? Any insights on how to structure this properly would be greatly appreciated. I'm using Node.js version 14.17.0 and Axios version 0.21.1. What's the correct way to implement this? I'm working in a macOS environment. Could this be a known issue?