Function: inAppExtract()

inAppExtract(questionnaireResponse, questionnaireOrCallback, comparisonSourceResponse): Promise<InAppExtractOutput>

An abstraction layer over the SDC extract() function, which implements the $extract operation.

This utility handles:

Packing of input parameters (e.g., QuestionnaireResponse, Questionnaire, comparison source).
Unpacking of output parameters (e.g., return Bundle, issues, debug info).
Optional fallback handling when a Questionnaire resource is not provided directly.

Parameters

Parameter	Type	Description
`questionnaireResponse`	`QuestionnaireResponse`	The primary `QuestionnaireResponse` to extract data from.
`questionnaireOrCallback`	`QuestionnaireOrCallback`	Either a `Questionnaire` resource or a fetch/callback configuration for dynamic retrieval.
`comparisonSourceResponse`	`QuestionnaireResponse` \| `null`	An optional `QuestionnaireResponse` used for comparison when extracting. If this is provided, only "modified" items will be extracted.

A promise resolving to an InAppExtractOutput:

On success: { extractSuccess: true, extractResult: { extractedBundle, issues?, debugInfo? } }
On failure: { extractSuccess: false, extractResult: OperationOutcome }