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2 changes: 2 additions & 0 deletions content/docs/error-boundaries.md
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Expand Up @@ -22,6 +22,8 @@ Error boundaries are React components that **catch JavaScript errors anywhere in
> * Server side rendering
> * Errors thrown in the error boundary itself (rather than its children)

> In development an error overlay might be shown on top of the screen regardless if you're using error boundaries or not. For example, create-react-app and nextjs implement this error overlay.

A class component becomes an error boundary if it defines either (or both) of the lifecycle methods [`static getDerivedStateFromError()`](/docs/react-component.html#static-getderivedstatefromerror) or [`componentDidCatch()`](/docs/react-component.html#componentdidcatch). Use `static getDerivedStateFromError()` to render a fallback UI after an error has been thrown. Use `componentDidCatch()` to log error information.

```js{7-10,12-15,18-21}
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