Examine source code of Twitter Filter

{
  "manifest_version": 3,
  "name": "Twitter Filter",
  "description": "Filter and manage your feed on X (Twitter) based on customizable rules.",
  "version": "0.0.49",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "*://x.com/*",
    "https://twitter-filter.rxliuli.com/*"
  ],
  "author": "rxliuli",
  "action": {
    "default_icon": {
      "16": "icon/16.png",
      "32": "icon/32.png",
      "48": "icon/48.png",
      "96": "icon/96.png",
      "128": "icon/128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "/feed-filter-ui.js"
      ],
      "matches": [
        "*://x.com/*"
      ]
    }
  ],
  "homepage_url": "https://store.rxliuli.com/extensions/twitter-filter/",
  "browser_specific_settings": {
    "gecko": {
      "id": "feed-filter-for-twitter@rxliuli.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://x.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/bridge.js"
      ],
      "world": "ISOLATED"
    },
    {
      "matches": [
        "*://x.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/filter.js"
      ],
      "world": "MAIN"
    }
  ]
}