Code ReviewAdvanced~18 min

Review: Error Boundary Issues

typescriptreacterror-handlingerror-boundary

Code Review Task

Please review the following React + TypeScript code.

Background

This is an implementation of an Error Boundary component. There are issues with error handling and user experience.

Review Points

componentDidCatch implementation
Error information logging
Appropriateness of fallback UI
Error recovery functionality

Your Answer

ErrorBoundary.tsxtypescript

import React, { Component, ReactNode } from 'react';
 
interface Props {
  children: ReactNode;
}
 
interface State {
  hasError: boolean;
  errorMessage: string;
}
 
class ErrorBoundary extends Component<Props, State> {
  constructor(props: Props) {
    super(props);
    this.state = {
      hasError: false,
      errorMessage: ''
    };
  }
 
  componentDidCatch(error: Error) {
    this.setState({
      hasError: true,
      errorMessage: error.message
    });
    console.log('Error occurred:', error);
  }
 
  render() {
    if (this.state.hasError) {
      return (
        <div>
          <h1>Something went wrong</h1>
          <p>Error: {this.state.errorMessage}</p>
          <pre>{this.state.errorMessage}</pre>
        </div>
      );
    }
 
    return this.props.children;
  }
}
 
export default ErrorBoundary;

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Model Answer

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