import { Sequence } from "../source/types/types";
/**
 * Checks that the values returned by both the pipe and span versions of an extracted method are the same.
 */
export declare function checkResult<T extends Function>(sequenceFunction: T, elementsOnly?: boolean): T;
/**
 * Checks that the sequence of elements returned by both the pipe and span versions of an extracted method return the
 * same elements or throw the same errors.
 */
export declare function checkSequenceResult<T extends Function>(sequenceFunction: T): T;
/**
 * Returns true if the elements of a sequence are equal to an array of other elements, regardless of the actual
 * container.
 */
export declare function expectElements<T>(sequence: Sequence<T>, elements: T[]): void;
/**
 * Returns the error tag for a function. This tag should always be included in errors thrown by the function. Used
 * for checking thrown errors.
 */
export declare function errorTag(functionName: string): string;