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Error Handling using Error Boundaries in React 16


A JavaScript error in the UI shouldn’t break the whole application. To solve this problem React 16 introduced the new concept of an error boundary.

Error boundaries are React components that catch JavaScript errors anywhere in their child component tree, log those errors, and display a fallback UI instead of the crashed component tree.

In this lesson we'll create an error boundary. We can use the new lifecycle hook componentDidCatch to handle any errors that the components we wrap throw at us, without unmounting our entire app!