react-error-boundary

A simple, reusable React error boundary component for React 16+.

React v16 introduced the concept of “error boundaries”.

This component provides a simple and reusable wrapper that you can use to wrap around your components. Any rendering errors in your components hierarchy can then be gracefully handled.

Usage

The simplest way to use <ErrorBoundary> is to wrap it around any component that may throw an error. This will handle errors thrown by that component and its descendants too.

import ErrorBoundary from 'react-error-boundary';

<ErrorBoundary>
  <ComponentThatMayError />
</ErrorBoundary>

You can react to errors (e.g. for logging) by providing an onError callback:

import ErrorBoundary from 'react-error-boundary';

const myErrorHandler = (error: Error, componentStack: string) => {
  // Do something with the error
  // E.g. log to an error logging client here
};

<ErrorBoundary onError={myErrorHandler}>
  <ComponentThatMayError />
</ErrorBoundary>

You can also customize the fallback component’s appearance:

import { ErrorBoundary } from 'react-error-boundary';

const MyFallbackComponent = ({ componentStack, error }) => (
  <div>
    <p><strong>Oops! An error occured!</strong></p>
    <p>Here’s what we know…</p>
    <p><strong>Error:</strong> {error.toString()}</p>
    <p><strong>Stacktrace:</strong> {componentStack}</p>
  </div>
);

<ErrorBoundary FallbackComponent={MyFallbackComponent}>
  <ComponentThatMayError />
</ErrorBoundary>

You can also use it as a higher-order component:

import { ErrorBoundaryFallbackComponent, withErrorBoundary } from 'react-error-boundary';

const ComponentWithErrorBoundary = withErrorBoundary(
  ComponentThatMayError,
  ErrorBoundaryFallbackComponent, // Or pass in your own fallback component
  onErrorHandler: (error, componentStack) => {
    // Do something with the error
    // E.g. log to an error logging client here
  },
);

<ComponentWithErrorBoundary />

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