/* Single-file Node.js + Express TikTok video downloader (uses yt-dlp) Usage: 1. Install Node.js (v16+ recommended) 2. Install yt-dlp on your system and make it available in PATH. - macOS/Linux: pip install -U yt-dlp OR download binary from https://github.com/yt-dlp/yt-dlp - Windows: download yt-dlp.exe and put it in the same folder or in PATH 3. In this project folder run: npm init -y npm install express body-parser cors 4. Start the server: node tiktok-downloader-server.js 5. Open http://localhost:3000 in your browser, paste a TikTok video URL and click Download. Important legal / safety note: - This tool only demonstrates how to build a downloader. Only download videos when you have the right to do so (e.g., your own content or content licensed for your use). Do NOT remove watermarks or bypass platform rules. - The maintainer / provider of this code is responsible for complying with TikTok's Terms of Service and applicable copyright la...