Examine source code of Twitter Dislikes

{
  "manifest_version": 3,
  "name": "Twitter Dislikes",
  "version": "1.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "@twitter_dislikes",
      "strict_min_version": "112.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "description": "Adds a dislike button to twitter",
  "icons": {
    "48": "public/icon.png"
  },
  "permissions": [
    "webRequest",
    "nativeMessaging",
    "activeTab"
  ],
  "host_permissions": [
    "*://*.x.com/*",
    "*://*.twitter.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.x.com/*",
        "*://*.twitter.com/*"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ]
}