reactjs / reactjs/react.dev

Feature: Add native support for error boundaries in Functional Components via a new hook

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Dominant language
JavaScript
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Description

Issue Body (Example):
💡 Problem: Currently, to implement an Error Boundary in a React application (a component that catches JavaScript errors anywhere in its child component tree, logs those errors, and displays a fallback UI), developers must use a Class Component with the componentDidCatch lifecycle method. This breaks the pattern of using hooks/functional components for the rest of the application.

🚀 Proposed Feature: Introduce a new hook, perhaps useErrorBoundary, that allows a Functional Component to act as an Error Boundary.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the existing documentation for class-based error boundaries and the componentDidCatch lifecycle method. Compare that behavior with the proposed useErrorBoundary hook and define how a functional component would catch errors, log them, and render fallback UI. Done means the feature is implemented with documented behavior and examples.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript, react
Domain
frontend
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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