/**
 * @packageDocumentation
 * @module Number
 */
import { MonoTypeOperatorFunction, Subscribable } from 'rxjs';
/**
 * Returns an Observable that emits a number that is the division of the source number with input number
 *
 * @category Math
 *
 * @param num The number to divide to the source value
 *
 * @remarks If the input value is `0` this operator will throw an error
 *
 * @example Returns a number that is the division of source and input
 * ```ts
 * const input = [4, 10, 12, 18, 20];
 * from(input).pipe(div(2)).subscribe();
 * ```
 * Output: `2, 5, 6, 9, 10`
 *
 * @returns Observable that emits a number that is the division of source and input
 */
export declare function div(num: Subscribable<number> | number): MonoTypeOperatorFunction<number>;