Examine source code of Save to PDF now - with no preview

{
  "manifest_version": 2,
  "name": "Save to PDF now - with no preview",
  "description": "Call Firefox's built-in Save to PDF feature using a button or keyboard shortcut and skip the preview.",
  "version": "0.9",
  "browser_specific_settings": {
    "gecko": {
      "id": "save-to-pdf-now-no-preview@jeffersonscher.com",
      "strict_min_version": "91.0"
    }
  },
  "developer": {
    "name": "Jefferson \"jscher2000\" Scher",
    "url": "https://github.com/jscher2000/"
  },
  "background": {
    "scripts": [
      "save-to-pdf-now-background.js"
    ]
  },
  "browser_action": {
    "browser_style": true,
    "default_title": "Save to PDF now (Shift+click for options)",
    "theme_icons": [
      {
        "light": "icons/save-pdf-256-dark.png",
        "dark": "icons/save-pdf-256-light.png",
        "size": 256
      }
    ]
  },
  "permissions": [
    "menus",
    "storage"
  ],
  "icons": {
    "256": "icons/save-pdf-256-light.png"
  },
  "commands": {
    "save-to-pdf-now": {
      "description": "Generate and save the PDF",
      "suggested_key": {
        "default": "Shift+Alt+P"
      }
    }
  }
}