Examine source code of Overdue Date Highlighter

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "version": "1.9.3",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "author": "Bob Jurencak",
  "browser_specific_settings": {
    "gecko": {
      "id": "overdue-date-highlighter@bjurencak",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.svg",
      "48": "icons/icon48.svg",
      "96": "icons/icon96.svg",
      "128": "icons/icon128.svg"
    },
    "default_title": "Overdue Date Highlighter"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared.js",
        "i18n.js",
        "date-utils.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "shared.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.svg",
    "48": "icons/icon48.svg",
    "96": "icons/icon96.svg",
    "128": "icons/icon128.svg"
  }
}