import type { Questionnaire, QuestionnaireItem, QuestionnaireResponse, QuestionnaireResponseItem } from 'fhir/r4';
export type RecursiveUpdateFunction<T> = (qItem: QuestionnaireItem, qrItemOrItems: QuestionnaireResponseItem | QuestionnaireResponseItem[] | null, extraData: T) => QuestionnaireResponseItem | QuestionnaireResponseItem[] | null;
/**
 * A generic (and safe) way to update a QuestionnaireResponse given a recursive function and a set of data i.e. Record<linkId, calculated expression values>, Record<linkId, re-populated values>
 * This function relies heavily on mapQItemsIndex() and getQrItemsIndex() to accurately pinpoint the locations of QR items based on their positions in the Q, taking into account repeating group answers, non-filled questions, etc
 *
 * @author Sean Fong
 */
export declare function updateQuestionnaireResponse<T>(questionnaire: Questionnaire, questionnaireResponse: QuestionnaireResponse, recursiveUpdateFunction: RecursiveUpdateFunction<T>, extraData: T): QuestionnaireResponse;
export type RecursiveReadArrayFunction<T, U> = (qItem: QuestionnaireItem, qrItemOrItems: QuestionnaireResponseItem | QuestionnaireResponseItem[] | null, extraData?: U) => T[] | null;
/**
 * A generic (and safe) way to read an array of element(s) i.e. QuestionnaireResponseItem[], extracted Observation[] from a QuestionnaireResponse given a recursive function.
 * It also provides an optional extraData (generic U) parameter for additional data that the recursive function may need.
 * This function relies heavily on mapQItemsIndex() and getQrItemsIndex() to accurately pinpoint the locations of QR items based on their positions in the Q, taking into account repeating group answers, non-filled questions, etc
 *
 * @author Sean Fong
 */
export declare function readQuestionnaireResponse<T, U>(questionnaire: Questionnaire, questionnaireResponse: QuestionnaireResponse, recursiveReadFunction: RecursiveReadArrayFunction<T, U>, extraData?: U): T[];
export type RecursiveTraverseFunction<U> = (qItem: QuestionnaireItem, root?: Questionnaire, parent?: QuestionnaireItem, extraData?: U) => void;
export declare function traverseQuestionnaire<U>(questionnaire: Questionnaire, recursiveTraverseFunction: RecursiveTraverseFunction<U>, extraData?: U): void;