How to Fix: Inline ref cleanup throws TypeError: Cannot read properties of null during concurrent transition rollbacks
Learn how to fix: Inline ref cleanup throws TypeError: Cannot read properties of null during concurrent transition rollbacks.
📋 Table of Contents
To resolve the error, you need to ensure that the cleanup function returned by the ref is not null. This can happen when the component unmounts before the cleanup function is executed.
🛑 Root Causes of the Error
- The error occurs when the React component is unmounted before the cleanup function is executed, causing it to return null.
🛠️ Step-by-Step Verified Fixes
Method 1: Use a Ref to Store the Cleanup Function
- Step 1: Create a ref to store the cleanup function, and pass it as a prop to the component that uses
useDeferredValue.
Method 2: Use a Memoized Cleanup Function
- Step 1: Create a memoized cleanup function using
useCallback, and pass it as a prop to the component that usesuseDeferredValue.
✨ Wrapping Up
By implementing one of these fixes, you should be able to resolve the error and ensure that your React application is stable and efficient.
❓ Frequently Asked Questions
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