import type { Quantity, QuestionnaireItemAnswerOption, QuestionnaireResponseItemAnswer } from 'fhir/r4';
export declare const quantityComparators: Quantity['comparator'][];
export declare function stringIsComparator(str: string | undefined): str is Quantity['comparator'];
export declare function createQuantityItemAnswer(precision: number | null, parsedNewInput: string, comparatorInput: Quantity['comparator'] | null, unitInput: QuestionnaireItemAnswerOption | null, answerKey: string | undefined): QuestionnaireResponseItemAnswer[];