/**
 * @packageDocumentation
 * @module Number
 */
import { OperatorFunction } from 'rxjs';
/**
 * Returns an Observable that emits a number from a source hex using Number.parseInt.
 *
 * @category Parse
 *
 * @example Return only parsed hex values
 * ```ts
 * const input = ['RxJS', 'ff', '00', '1b', '23', 'c89bb'];
 * from(input).pipe(parseHex()).subscribe();
 * ```
 * Output: `255, 0, 27, 25, 821691`
 *
 * @returns Observable that emits a number from source hex value
 */
export declare function parseHex(): OperatorFunction<string, number>;