This directory contains code that is shared between the frontend and backend of the Video Downloader application.

• utils.ts - Utility functions for formatting, sanitizing, and other common operations

These utilities can be imported in both frontend and backend code. For example:

// In backend code
import { formatDuration } from "../shared/utils.ts";

// In frontend code (via import in HTML)
import { formatDuration } from "/shared/utils.ts";

• formatDuration(seconds) - Format seconds to MM:SS or HH:MM:SS
• formatFileSize(bytes) - Format bytes to human-readable size (KB, MB, GB)
• extractHostname(url) - Extract clean hostname from URL
• sanitizeFilename(filename) - Make filenames safe for downloading
• detectPlatform(url) - Detect which video platform a URL belongs to