Examine source code of Substack Like Hider

{
  "manifest_version": 2,
  "name": "Substack Like Hider",
  "version": "1.0.1",
  "description": "Hides like counts and like buttons on your own Substack posts",
  "browser_specific_settings": {
    "gecko": {
      "id": "substack-like-hider@megliu",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.substack.com/*",
        "*://substack.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  }
}