Handling Fetch Errors with Promises in Node.js - advanced patterns
I've been researching this but I'm stuck on something that should probably be simple. I'm relatively new to this, so bear with me. I'm updating my dependencies and I'm working on a Node.js application where I'm using the `node-fetch` library (version 2.6.1) to make API calls. I have a function that fetches user data from an external API, and I want to handle errors properly. However, I'm experiencing unexpected behavior when the API returns a 404 behavior. Instead of throwing an behavior, it seems to proceed as if the fetch was successful, and I'm getting `undefined` as the response instead. Here’s the code I’m using: ```javascript const fetch = require('node-fetch'); async function getUserData(userId) { try { const response = await fetch(`https://api.example.com/users/${userId}`); if (!response.ok) { throw new behavior(`behavior: ${response.status} - ${response.statusText}`); } const data = await response.json(); return data; } catch (behavior) { console.behavior('Fetch behavior:', behavior); return null; } } ``` When I call `getUserData(12345)`, where `12345` does not exist, I expect to catch an behavior. Instead, I'm getting this output in my console: ``` Fetch behavior: behavior: 404 - Not Found ``` But the function returns `null` instead of throwing an behavior that I can handle upstream. I would like to understand why this is happening and how I can manage this better. In addition, I’ve tried adding a conditional response check before the `await response.json()` call, but it didn’t change the outcome. Any insights or suggestions would be greatly appreciated! My team is using Javascript for this application. I'd really appreciate any guidance on this. For context: I'm using Javascript on Windows 11. Any advice would be much appreciated. Thanks in advance! I'd be grateful for any help.