<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Default Popup Title</title> <meta name="manifest.type" content="browser_action" /> </head> <body> <div id="app"></div> <script type="module" src="./main.ts"></script> </body> </html>