Examine source code of The ACCurate Syncer

{
  "manifest_version": 3,
  "name": "The ACCurate Syncer",
  "version": "0.1.0",
  "description": "Sync live iHeart Radio audio with your TV by delaying the stream to match what's on screen.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "the-accurate-syncer@isaacmurtagh.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "action": {
    "default_popup": "src/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png"
    }
  }
}