Examine source code of Hacker News TrustSpark

{
  "manifest_version": 2,
  "name": "Hacker News TrustSpark",
  "version": "1.0.7",
  "description": "Trust signals for Hacker News users",
  "permissions": [
    "storage",
    "*://news.ycombinator.com/*",
    "*://hacker-news.firebaseio.com/*",
    "*://hn.algolia.com/*"
  ],
  "icons": {
    "48": "icons/y48.svg",
    "96": "icons/y96.svg"
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": "icons/y18.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://news.ycombinator.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "trustspark@trustspark.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "id": "trustspark@trustspark.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}