import { Dictionary, Producer, Transform } from "../../types/types";
import { OmniSequence } from "../../types/sequence/omni-sequence";
/**
 * Yields all own-property names in an object.
 */
export declare function keys<V>(object: Dictionary<V>): OmniSequence<string>;
/**
 * Yields all key-value pairs in an object.
 */
export declare function pairs<V>(object: Dictionary<V>): OmniSequence<[string, V]>;
/**
 * Yields all integers from zero to **end**. Does not include **end**.
 */
export declare function range(end: number): OmniSequence<number>;
/**
 * Yields all numbers from **start** to **end** with a step size of one. Does not include **end**. Throws an error
 * if **start** is greater than **end**.
 */
export declare function range(start: number, end: number): OmniSequence<number>;
/**
 * Yields all numbers from **start** to **end** with a provided **step** size. Does not include **end**. Throws an
 * error if **start** is greater than **end** or the **step** size is zero.
 */
export declare function range(start: number, end: number, step: number): OmniSequence<number>;
/**
 * Yields the values of all own-properties in an **object**.
 */
export declare function values<V>(object: Dictionary<V>): OmniSequence<V>;
/**
 * Yields an infinite sequence where each element is generated by a **producer** function.
 */
export declare function sequence<T>(producer: Producer<T>): OmniSequence<T>;
/**
 * Yields an infinite sequence where each element is generated by passing the previous element into the **next**
 * transform function. The **initial** value will be the first value passed into **next**.
 */
export declare function sequence<T>(initial: T, next: Transform<T, T>): OmniSequence<T>;