test(js): Cover idempotency key reuse across POST retries#2401
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svix-jplatte merged 1 commit intoJun 24, 2026
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Summary
Adds regression coverage to ensure automatically generated idempotency keys are reused across POST retries.
Motivation
The JavaScript SDK automatically generates an idempotency key for POST requests when one is not provided by the caller.
Retries currently reuse the same request headers, meaning the same auto-generated idempotency key is preserved across retry attempts. This behavior is important for safe retry semantics and helps avoid duplicate side effects when a request is retried after a transient failure.
This test documents and protects that existing behavior.
Changes
Test plan