Examine source code of Leetcode Premium Unlocker

{
  "name": "Leetcode Premium Unlocker",
  "version": "0.7.7",
  "description": "Inject crowdsourced Leetcode premium data",
  "permissions": [
    "https://sheets.googleapis.com/v4/spreadsheets*",
    "storage",
    "unlimitedStorage"
  ],
  "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": "{7138266d-3c02-4cc9-ad19-63f9e6435db4}"
    }
  }
}