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Safety · easy

15. Error Handling & Error Causes

throw, Error instances, and error chaining.

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Throw Error instances rather than plain strings to capture stack traces. Modern JavaScript supports the `cause` property to chain root-cause errors.

js
throw new Error("Transaction broadcast failed", { cause: networkError });

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  1. 1. Why throw Error objects instead of strings?

  2. 2. What does { cause: err } provide?

  3. 3. What is the risk of an empty catch block?

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