Examine source code of Leetcode Optimizer

{
  "name": "Leetcode Premium Unlocker",
  "version": "2.0.1",
  "description": "Inject crowdsourced Leetcode premium data",
  "permissions": [
    "https://sheets.googleapis.com/v4/spreadsheets*",
    "storage",
    "unlimitedStorage",
    "activeTab"
  ],
  "browser_action": {
    "default_popup": "dist/index.html"
  },
  "manifest_version": 2,
  "content_scripts": [
    {
      "css": [
        "dist/style.css"
      ],
      "js": [
        "/dist/main.js"
      ],
      "matches": [
        "https://leetcode.com/*"
      ]
    }
  ],
  "icons": {
    "96": "/assets/logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{33eec157-931e-4cde-a04d-01aad309954f}"
    }
  }
}