import React from 'react' type PagesDevOverlayErrorBoundaryProps = { children?: React.ReactNode } type PagesDevOverlayErrorBoundaryState = { error: Error | null } export class PagesDevOverlayErrorBoundary extends React.PureComponent< PagesDevOverlayErrorBoundaryProps, PagesDevOverlayErrorBoundaryState > { state = { error: null } static getDerivedStateFromError(error: Error) { return { error } } // Explicit type is needed to avoid the generated `.d.ts` having a wide return type that could be specific to the `@types/react` version. render(): React.ReactNode { // The component has to be unmounted or else it would continue to error return this.state.error ? null : this.props.children } }