import { Runtype } from './runtype';
/**
 * A number. By default reject NaN and Infinity values.
 *
 * Options:
 *
 *   allowNaN .. allow NaN values
 *   allowInfinity .. allow positive and negative Infinity values
 *   min .. reject numbers smaller than that
 *   max .. reject numbers larger than that
 */
export declare function number(options?: {
    allowNaN?: boolean;
    allowInfinity?: boolean;
    min?: number;
    max?: number;
}): Runtype<number>;