import { File } from '../services/FileService';
declare function formatBytes(bytes: number, decimals?: number): string;
declare const NinjaUtil: {
    formatBytes: typeof formatBytes;
    formatDuration: (duration: number) => string;
    totalDuration: (files: File[]) => number;
    calculatePrice: (duration: number) => string;
    calculateStripeCheckoutQuantity: (duration: number) => number;
};
export default NinjaUtil;