Examine source code of Typo Reporter

{
  "manifest_version": 2,
  "name": "Typo Reporter",
  "version": "1.0",
  "description": "Report typos or factual errors in articles",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage"
  ],
  "options_ui": {
    "page": "settings.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ceabba69-b725-43d0-914f-6db9a0b62610}"
    }
  }
}