909: Handling and Throwing Errors

Syntax - Tasty Web Development Treats · Wes Bos & Scott Tolinski - Full Stack JavaScript Web Developers

June 9, 202539m 6s

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Show Notes

We break down how to properly throw, catch, and log errors in JavaScript and TypeScript. They cover client-side and server-side strategies, using tools like Sentry, and how to handle errors without taking down your whole app.

Show Notes

00:00 Welcome to Syntax!
01:19 Error terminology.
- 01:42 Thrown and catching.
03:01 What’s in an error.
- 04:09 Name and message.
- 04:42 Stack.
- 07:12 Node system errors.
- 07:34 Messages: strings, objects, or custom errors.
08:19 Throwing errors.
12:01 Promise errors.
- 12:10 Try catch block, .catch().
- 14:13 Using awaited-to.
- 15:10 Finally.
- 16:29 promise.try()
17:14 Re-throwing errors.
- Error Cause
18:12 Client-side errors.
- 18:15 Catching at different levels.
- 18:51 Displaying errors.
- 21:59 Transforming server errors into client errors.
- 24:12 Error boundaries.
25:26 Server errors.
- 26:10 JSON API.
- 27:41 HTTP response codes.
30:09 Logging and solving errors.
- 31:16 Proudly supported by Sentry.io.
  - Logging within Sentry
36:16 TypeScript and errors.

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