Examine source code of SafeFeed

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.0.0",
  "default_locale": "en",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "*://*.facebook.com/*",
    "*://*.youtube.com/*"
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "__MSG_extensionName__"
  },
  "background": {
    "scripts": [
      "src/background/service-worker.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*",
        "*://*.youtube.com/*"
      ],
      "js": [
        "src/utils/url-normalizer.js",
        "src/utils/storage.js",
        "src/utils/i18n.js",
        "src/content/platforms/facebook.js",
        "src/content/platforms/youtube.js",
        "src/content/content.js"
      ],
      "css": [
        "src/styles/injected.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "safefeed@extension",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}