909: Handling and Throwing Errors
Jun 09, 2025•39 min
Episode description
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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