import type { QuestionnaireItem } from 'fhir/r4';
import type { CalculatedExpression } from '../interfaces';
/**
 * Returns the value of a cqf-expression, calculatedExpression or ItemTextAriaLabelExpression.
 *
 * - If no expression is found → returns null.
 * - If the value is null → returns an empty string.
 * - If the value is a string or number → returns it as a string.
 *
 * @param {QuestionnaireItem} qItem - The questionnaire item.
 * @param {CalculatedExpression['from']} from - The expression source (e.g. 'item._text', 'item._text.aria-label', 'item._prefix')
 * @returns {string | null} The display value as a string, empty string, or null.
 */
declare function useDisplayCqfAndCalculatedExpression(qItem: QuestionnaireItem, from: CalculatedExpression['from']): string | null;
export default useDisplayCqfAndCalculatedExpression;