import { Component, type ReactNode } from 'react'; interface Props { children: ReactNode; fallback: ReactNode; } interface State { hasError: boolean; } export default class ErrorBoundary extends Component { state: State = { hasError: false }; static getDerivedStateFromError(): State { return { hasError: true }; } render() { if (this.state.hasError) return this.props.fallback; return this.props.children; } }