Examine source code of ConsoleNotify

{
  "manifest_version": 3,
  "name": "ConsoleNotify - Live Console Overlay",
  "version": "1.0.2",
  "description": "Shows console logs, warnings and errors as on-screen notifications.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "ConsoleNotify",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "vendor/browser-shim.js",
        "content/icons.js",
        "content/state.js",
        "content/json-tree/json-tree.js",
        "content/settings/settings.js",
        "content/toast/toast.js",
        "content/bar/bar.js",
        "content/seo.js",
        "content/content.js"
      ],
      "css": [
        "styles/fonts.css",
        "content/toast/toast.css",
        "content/toast/toast-types.css",
        "content/settings/settings.css",
        "content/bar/bar.css",
        "content/json-tree/json-tree.css",
        "styles/tooltip.css",
        "styles/host-shield.css"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content/inject.js",
        "content/toast/toast.html",
        "content/bar/bar.html",
        "content/json-tree/json-tree.html",
        "content/settings/settings.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "consolenotify@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}