Common Swiggy API Errors in React Projects and How to Resolve Them

Common Swiggy API Errors in React Projects and How to Resolve Them

Using the Swiggy API in a React project surfaces a predictable set of errors. Here are the most common ones and how to resolve each.

CORS Error

The browser blocks the request because the API does not allow your origin. Resolve with a development proxy or by calling through a small backend.

'map is not a function'

Your code expects an array but the response is an object. The data is likely nested. Log the response, find the array inside it, and update your parsing.

Network Error

The request never reaches the API. Check your internet connection, look for a typo in the URL, and rule out a VPN or firewall blocking the domain.

429 Too Many Requests

You are calling the API too often. Cache responses and reduce call frequency. Rate limiting is common with free and dummy APIs.

404 Not Found

The endpoint changed or you have a typo. Verify the URL against the latest documentation and update your code.

Stale Data After Navigation

You see old data after navigating back. The fetch is using a cached response or not refetching on route change. Refetch when the route parameter changes by including it in the dependency array.

Updating State After Unmount

You see a warning about updating state on an unmounted component. Use a cleanup flag or abort signal to cancel the fetch on unmount.

The Takeaway

Most Swiggy API errors fall into these categories: CORS, response shape, network, rate limiting, stale data, and unmount. Knowing the fix for each turns panic into routine.