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As of Middy v3, by default it will trigger an Abort signal shortly before a lambda times out to allow your handler to safely stop up and middleware to clean before the lambda terminates. When writing tests for lambda handlers wrapped with middy you'll need to account for this. There are a few approaches: 3. Set context.getRemainingTimeInMillis = falsy to disable the creation of the AbortController.

  1. Set middy(handler, { timeoutEarlyInMillis: 0 }) to alternatively disable the creation of the AbortController.
  2. Set middy(handler, { timeoutEarlyResponse: () => {} }) to disable the timeout error from being thrown using a no-op.