import { CQLValueSet, ValueSet } from '../datatypes/clinical';
import { Context } from '../runtime/context';
export declare type Direction = 'asc' | 'ascending' | 'desc' | 'descending';
export declare function removeNulls(things: any[]): any[];
export declare function numerical_sort(things: any[], direction: Direction | null): any[];
export declare function isNull(value: any): boolean;
export declare const typeIsArray: (arg: any) => arg is any[];
export declare function allTrue(things: any): any;
export declare function anyTrue(things: any): any;
export declare const jsDate: DateConstructor;
export declare function normalizeMillisecondsFieldInString(string: string, msString: string): string;
export declare function normalizeMillisecondsField(msString: string): string;
export declare function getTimezoneSeparatorFromString(string: string): "" | "-" | "+";
declare type SortCompareFn<T> = (a: T, b: T) => Promise<number>;
export declare function asyncMergeSort<T>(arr: T[], compareFn: SortCompareFn<T>): Promise<T[]>;
export declare function resolveValueSet(vs: CQLValueSet, ctx: Context): Promise<ValueSet>;
export {};