/**
 * Whether the game has its own custom domain name. In other words, not running on localhost or
 * foo.playpass.games or foo.playpass-staging.com.
 */
export declare const hasCustomDomain: boolean;
export declare function randomId(prefix: string): string;
export declare function randomNoise(count: number): string;
export declare function getQueryParameters(url?: string): {
    [key: string]: string;
};
export declare function shortHash(input: string): string;
export declare function camelCasePrefix(prefix: string, str: string): string;
/** Post a JSON object to a URL in the background. */
export declare function sendBackground(url: string, body: unknown): void;
/** Post a JSON object to a URL. */
export declare function sendPost(url: string, body: unknown): Promise<Response>;