import { NzSafeAny } from 'ng-zorro-antd/core/types';
export declare function isNumber(value: number | string): boolean;
export declare function toNumber(sourceValue: number | string): number;
export declare function valToNumber(val: string | number, defaultVal?: number): number;
/**
 * 填充原始 rotationList
 * @param source
 * @param total
 * @returns
 */
export declare function padRotationList(source: number[], total: number): number[];
export declare function launchFullscreen(element: NzSafeAny): void;
export declare function exitFullscreen(): void;