import type { Element, Extension, QuestionnaireItem, QuestionnaireItemAnswerOption } from 'fhir/r4';
import type { RegexValidation } from '../interfaces/regex.interface';
export declare function hasDisplayCategory(qItem: QuestionnaireItem): boolean;
export declare function hasItemControl(qItem: QuestionnaireItem): boolean;
export declare function shouldRenderNestedItems(qItem: QuestionnaireItem): boolean;
/**
 * Check if the extension has an itemControl code equal to the given itemControlCode
 *
 * @author Sean Fong
 */
export declare function isSpecificItemControl(qItem: QuestionnaireItem, itemControlCode: string): boolean;
/**
 * Check if the extension has an displayCategory code equal to the given displayCategory
 *
 * @author Sean Fong
 */
export declare function isSpecificDisplayCategory(qItem: QuestionnaireItem, displayCategoryCode: string): boolean;
/**
 * Check if the extension has url for items that use shortText
 *
 * @author Sean Fong
 */
export declare function getShortText(qItem: QuestionnaireItem): string | null;
/**
 * Check if the extension has url for items that use open label
 * Default open label text to "Other"
 *
 * @author Sean Fong
 */
export declare function getOpenLabelText(qItem: QuestionnaireItem): string;
/**
 * Check if the decimal value has a quantity precision for the decimal value
 *
 * @author Sean Fong
 */
export declare function getDecimalPrecision(qItem: QuestionnaireItem): number | null;
export declare function getXHtmlStringFromExtension(extensions: Extension[]): string | null;
/**
 * Check if the extension has a url for xhtml rendering
 *
 * @author Sean Fong
 */
export declare function getXHtmlString(qItem: QuestionnaireItem): string | null;
/**
 * Check if the item label (text) has a valueMarkdown extension
 *
 * @author Sean Fong
 */
export declare function getMarkdownString(element: Element | undefined): string | null;
/**
 * Get text display prompt for items with itemControlCode prompt and has a prompt childItem
 *
 * @author Sean Fong
 */
export declare function getTextDisplayPrompt(qItem: QuestionnaireItem): string;
/**
 * Get Quantity unit for items with itemControlCode unit and has a unit childItem
 *
 * Example extension:
 * {
 *   "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-unit",
 *   "valueCoding": {
 *     "system": "http://unitsofmeasure.org",
 *     "code": "kg",
 *     "display": "kg"
 *   }
 * }
 *
 * Example Output (omit the url):
 *  {
 *   "valueCoding": {
 *     "system": "http://unitsofmeasure.org",
 *     "code": "kg",
 *     "display": "kg"
 *   }
 * }
 *
 * @author Sean Fong
 */
export declare function getQuantityUnit(qItem: QuestionnaireItem): QuestionnaireItemAnswerOption | null;
/**
 * Get decimal text display unit for items with itemControlCode unit and has a unit childItem
 *
 * @author Sean Fong
 */
export declare function getTextDisplayUnit(qItem: QuestionnaireItem): string;
/**
 * Get text display lower bound for items with itemControlCode "lower" and has a "lower" childItem
 *
 * @author Sean Fong
 */
export declare function getTextDisplayLower(qItem: QuestionnaireItem): string;
/**
 * Get text display upper bound for items with itemControlCode "upper" and has a "upper" childItem
 *
 * @author Sean Fong
 */
export declare function getTextDisplayUpper(qItem: QuestionnaireItem): string;
/**
 * Get text display instructions for items with itemControlCode instructions and has an instructions childItem
 *
 * @author Sean Fong
 */
export declare function getTextDisplayInstructions(qItem: QuestionnaireItem): string;
/**
 * Get regex validation for items with regex extensions
 *
 * @author Sean Fong
 */
export declare function getRegexValidation(qItem: QuestionnaireItem): RegexValidation | undefined;
export declare function getRegexString(qItem: QuestionnaireItem): string | null;
export declare function getMinValue(qItem: QuestionnaireItem): string | number | undefined;
export declare function getMinValueFeedback(qItem: QuestionnaireItem): string | null;
export declare function getMaxValue(qItem: QuestionnaireItem): string | number | undefined;
export declare function getMaxValueFeedback(qItem: QuestionnaireItem): string | null;
export declare function getRequiredFeedback(qItem: QuestionnaireItem): string | null;
/**
 * Check if the item has a sdc-questionnaire-minQuantity and minQuantity extension
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {number | undefined} The numeric value of the minQuantity extension, if present.
 *
 * @author Janardhan Vignarajan
 */
export declare function getMinQuantityValue(qItem: QuestionnaireItem): number | undefined;
/**
 * Check if the item has a sdc-questionnaire-minQuantity feedback extension
 * Probably should use targetConstraint instead of this, but we can't deprecate it yet
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {string | null} The value of the extension if found, otherwise null.
 *
 * @author Janardhan Vignarajan
 */
export declare function getMinQuantityValueFeedback(qItem: QuestionnaireItem): string | null;
/**
 * Check if the item has a sdc-questionnaire-maxQuantity extension
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {number | undefined} The numeric value of the maxQuantity extension, if present.
 *
 * @author Janardhan Vignarajan
 */
export declare function getMaxQuantityValue(qItem: QuestionnaireItem): number | undefined;
/**
 * Check if the item has a sdc-questionnaire-maxQuantity feedback extension
 * Probably should use targetConstraint instead of this, but we can't deprecate it yet
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {string | null} The value of the extension if found, otherwise null.
 *
 * @author Janardhan Vignarajan
 */
export declare function getMaxQuantityValueFeedback(qItem: QuestionnaireItem): string | null;
/**
 * Check if the QuestionnaireItem has a 'item.text hidden' extension on the '_text' field.
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {boolean} True if the item text is hidden, otherwise false.
 */
export declare function isItemTextHidden(qItem: QuestionnaireItem): boolean;
/**
 * Check if the QuestionnaireItem has a 'GroupHideAddItemButton' extension to hide the Add Item button for group tables.
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {boolean} True if the Add Item button should be hidden, otherwise false.
 */
export declare function isGroupAddItemButtonHidden(qItem: QuestionnaireItem): boolean;
/**
 * Check if the item has a sdc-questionnaire-width extension
 *
 * @param {QuestionnaireItem} qItem - The QuestionnaireItem to check.
 * @returns {number | undefined} The numeric value of the columnWidth extension, if present.
 *
 * @author Janardhan Vignarajan
 */
export declare function getColumnWidth(qItem: QuestionnaireItem): string | undefined;
/**
 * Check if the QuestionnaireItem has a 'showRepopulateButton' extension to show a sync button for granular repopulation.
 */
export declare function isItemRepopulatable(qItem: QuestionnaireItem): boolean;