<ErrorBoundary />

Displays a fallback component an error is thrown (including rejected useSuspense()).

info

Reusable React error boundary component.

Usage

Place ErrorBoundary at or above navigational boundaries like pages, routes, or modals to "catch" errors and render a fallback UI.

import React from 'react';
import { ErrorBoundary } from '@data-client/react';

export default function MyPage() {
  return (
    <ErrorBoundary>
      <SuspendingComponent />
    </ErrorBoundary>
  );
}

function SuspendingComponent() {
  const data = useSuspense(MyEndpoint);

  return <div>{data.text}</div>;
}

Props

interface Props {
  children: React.ReactNode;
  className?: string;
  fallbackComponent: React.ComponentType<{
    error: E;
    resetErrorBoundary: () => void;
    className?: string;
  }>;
  listen?: (resetListener: () => void) => () => void;
}

fallbackComponent

import React from 'react';
import { CacheProvider, ErrorBoundary } from '@data-client/react';

function ErrorPage({
  error,
  className,
  resetErrorBoundary,
}: {
  error: Error;
  resetErrorBoundary: () => void;
  className?: string;
}) {
  return (
    <pre role="alert" className={className}>
      {error.message} <button onClick={resetErrorBoundary}>Reset</button>
    </pre>
  );
}

export default function App() {
  return (
    <CacheProvider>
      <ErrorBoundary fallbackComponent={ErrorPage} className="error">
        <Router />
      </ErrorBoundary>
    </CacheProvider>
  );
}

listen

Subscription handler to reset error state on events like URL location changes. This is great for placing a boundary to wrap routing components.

An example using Anansi Router, which uses history subscription.

import { useController } from '@anansi/router';
import { ErrorBoundary } from '@data-client/react';

function App() {
  const { history } = useController();
  return (
    <div>
      <nav>
        <Link name="Home">Coin App</Link>
      </nav>
      <main>
        <ErrorBoundary listen={history.listen}>
          <MatchedRoute index={0} />
        </ErrorBoundary>
      </main>
    </div>
  );
}

className

className to forward to fallbackComponent