export declare type Range = IterableIterator<number>;
export declare type RangeFactory = () => Range;
/**
 * A function that is returned from other range factory methods.
 */
export declare type PartialRangeFactory = (factory: RangeFactory) => RangeFactory;
/**
 * Converts an array to a generator.
 */
export declare const arrToRangeFactory: (array: number[]) => RangeFactory;
/**
 * Converts an array to an iterator.
 */
export declare const arrToRange: (array: number[]) => IterableIterator<number>;
/**
 * Checks if a range is longer than `n`
 */
export declare const longerThan: (n: number) => (factory: RangeFactory) => boolean;
/**
 * Checks if a range is not empty ie. has elements.
 */
export declare const nonEmpty: (factory: RangeFactory) => boolean;