Examine source code of Auto Refresh Page

{
  "name": "__MSG_app_name__",
  "description": "__MSG_app_description__",
  "version": "4.0.4",
  "manifest_version": 3,
  "default_locale": "en",
  "icons": {
    "16": "/icons/green-16.png",
    "32": "/icons/green-32.png",
    "48": "/icons/green-48.png",
    "64": "/icons/green-64.png",
    "128": "/icons/green-128.png",
    "256": "/icons/green-256.png"
  },
  "background": {
    "scripts": [
      "js/1b310.js"
    ]
  },
  "action": {
    "default_title": "__MSG_app_name__",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/icons/green-16.png",
      "32": "/icons/green-32.png",
      "48": "/icons/green-48.png",
      "64": "/icons/green-64.png",
      "128": "/icons/green-128.png",
      "256": "/icons/green-256.png"
    }
  },
  "sidebar_action": {
    "open_at_install": false,
    "default_title": "__MSG_app_name__",
    "default_icon": {
      "16": "/icons/green-16.png",
      "32": "/icons/green-32.png",
      "48": "/icons/green-48.png",
      "64": "/icons/green-64.png",
      "128": "/icons/green-128.png",
      "256": "/icons/green-256.png"
    },
    "default_panel": "sidebar.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/9f1be.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "js/660d0.js"
      ],
      "all_frames": true,
      "run_at": "document_idle",
      "match_about_blank": true
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "scripting",
    "contextMenus",
    "unlimitedStorage",
    "notifications"
  ],
  "optional_permissions": [
    "userScripts",
    "browsingData"
  ],
  "host_permissions": [
    "https://config.autorefresh.page/firefox.json"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{da35dad8-f912-4c74-8f64-c4e6e6d62610}"
    }
  }
}