export declare function getLast<T>(array: T[]): T | undefined;
export declare function delay(time: number): Promise<void>;
export declare function findConsecutiveSubsets<T>(_entities: T[], key: keyof T): T[][];
export declare function splitArrayInHalf<T>(array: T[]): [T[], T[]];
export declare function getRangeAsString<T>(array: T[], getValue: (v: T) => any): string;
interface Range<T> {
    first: T;
    last: T;
}
export declare function getRange<T, O>(array: T[], getValue: (v: T) => O): Range<O> | undefined;
/**
 * These are helpers to stop spock during tests from the test code.
 */
export declare function getSpockBreakout(): boolean;
export declare function setSpockBreakout(): void;
export declare function resetSpockBreakout(): void;
export {};