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Frontend First

Throw is about control flow – not error handling

Apr 10, 2024
Sam and Ryan discuss throw as a versatile JavaScript feature, not limited to error handling. They compare error handling to throw-try/catch, explore Next.js use of throw for control flow, and debate adding dynamic features to static sites.
01:04:11

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Quick takeaways

  • Throw in JavaScript is not limited to error handling, but can also be used for non-error control flow to optimize program execution.
  • Distinction between error handling and non-error uses of throw is crucial for effective program flow management, especially in React error boundary systems.

Deep dives

Throw for Control Flow in TV Series Discussions

The podcast episode delves into the concept of using throw for control flow in various scenarios to optimize program handling. Comparisons are drawn between error cases and non-error cases where throw aids in short-circuiting the flow versus handling it locally. Examples from TV series commentary to library methods like Zod parsing are cited to explain the nuances of when to throw for global versus local handling.

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