Examine source code of Touch Navigation

{
  "manifest_version": 3,
  "name": "Touch Navigation",
  "version": "1.5",
  "description": "Add touch navigation gestures to go back/forward and reload the page.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{9cba31c4-f9ea-4c79-9f89-31bb67f3edef}"
    }
  },
  "icons": {
    "48": "icon.svg"
  },
  "action": {
    "default_icon": "icon.svg"
  },
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "src/content.js"
      ],
      "css": [
        "src/content.css"
      ]
    }
  ]
}