Examine source code of Unwanted Opinion

{
  "manifest_version": 2,
  "name": "Unwanted Opinion",
  "version": "0.1.1",
  "description": "Blocks tweets from Twitter Blue users.",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "browser_action": {
    "default_title": "Unwanted Opinion",
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://mobile.twitter.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "opinionator.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{fad77060-7b63-41bf-b185-6bd3ea14f630}"
    }
  }
}