Examine source code of Leetcode_Toolkit

{
  "description": "Open problems with their ID , save your submissions on local and GitHub , and much more!",
  "manifest_version": 2,
  "name": "Leetcode Toolkit",
  "version": "1.0.1",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "https://leetcode.com/*",
    "https://api.github.com/*",
    "downloads",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/icon.svg",
    "default_title": "LeetCode_Toolkit",
    "default_popup": "src/popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*",
        "https://api.github.com/*"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Q"
      }
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ee01e4de-1c2d-4816-ad05-0be027bc097b}"
    }
  }
}