Examine source code of ModMyFeed — Reddit Feed Moderation

{
  "manifest_version" : 3 ,
  "name" : "ModMyFeed — Reddit Feed Moderation",
  "short_name" : "ModMyFeed",
  "version" : "0.9.2",
  "description" : "Personal moderation for Reddit: mute words, subreddits, users, domains, flairs, and common feed clutter locally.",
  "permissions" : [
    "storage" 
  ],
  "action" : {
    "default_title" : "ModMyFeed",
    "default_popup" : "src/popup/popup.html",
    "default_icon" : {
      "16" : "icons/icon16.png",
      "32" : "icons/icon32.png",
      "48" : "icons/icon48.png"
    }
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://www.reddit.com/*" 
      ],
      "js" : [
        "src/shared/rules.js" ,
        "src/content/content.js" 
      ],
      "css" : [
        "src/content/content.css" 
      ],
      "run_at" : "document_idle" 
    }
  ],
  "icons" : {
    "16" : "icons/icon16.png",
    "32" : "icons/icon32.png",
    "48" : "icons/icon48.png",
    "128" : "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "modmyfeed@malcolm9519.github",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}