declare function emToPx(ems: number): number;
declare function pxToEm(px: number): number;
declare function cLog(valueDescription: string, value?: unknown, fn?: any): void;
declare function cErr(valueDescription: string, value?: unknown, fn?: any): void;
declare function redirect(url?: string, afterMs?: number): Promise<void>;
declare function pause(ms: number): Promise<void>;
declare function getTimestamp(format?: 'seconds' | 'milliseconds'): number;

export { cErr, cLog, emToPx, getTimestamp, pause, pxToEm, redirect };