/// <reference types="node" resolution-mode="require"/>
import { URL } from 'url';
export declare function wait(ms: number): Promise<void>;
export declare function pascalCase(str: string): string;
export declare function isUrl(str: string): boolean;
export declare function fileExists(path: string): Promise<boolean>;
export declare function isDirectory(path: string): Promise<boolean>;
export declare function isEmptyDirectory(path: string): Promise<boolean>;
export declare function n(n: number, base: string): string;
export declare function isValidUrl(s: string | URL, protocols?: string[]): boolean;
export declare function isLocalUrl(url: URL, base: URL): boolean;
export declare function isAssetUrl(url: URL): boolean;
export declare function isHtmlContentType(headers: Record<string, string>): boolean;
export declare function removeHash(url: URL | string): string;
export declare function getLocalUrl(url: URL | string): string;