// Copyright 2017-2021 @polkadot/react-components authors & contributors // SPDX-License-Identifier: Apache-2.0 import type { I18nProps } from './types'; import React from 'react'; import translate from './translate'; interface Props extends I18nProps { children: React.ReactNode; doThrow?: boolean; error?: Error | null; onError?: () => void; trigger?: unknown; } interface State { error: Error | null; prevTrigger: string | null; } // NOTE: This is the only way to do an error boundary, via extend class ErrorBoundary extends React.Component { public override state: State = { error: null, prevTrigger: null }; static getDerivedStateFromError (error: Error): Partial { return { error }; } static getDerivedStateFromProps ({ trigger }: Props, { prevTrigger }: State): State | null { const newTrigger = JSON.stringify({ trigger }); return (prevTrigger !== newTrigger) ? { error: null, prevTrigger: newTrigger } : null; } public override componentDidCatch (error: Error): void { const { doThrow, onError } = this.props; onError && onError(); if (doThrow) { throw error; } } public override render (): React.ReactNode { const { children, error: errorProps, t } = this.props; const { error } = this.state; const displayError = errorProps || error; return displayError ? (
{t('Uncaught error. Something went wrong with the query and rendering of this component. {{message}}', { replace: { message: displayError.message } })}
) : children; } } export default translate(ErrorBoundary);