Examine source code of QuickLeet

{
  "manifest_version": 2,
  "name": "QuickLeet",
  "version": "0.1",
  "description": "Generates Boilerplate Code for LeetCode Problems",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "downloads"
  ],
  "background": {
    "scripts": [
      "./background/background.js"
    ],
    "type": "module",
    "persistent": false
  },
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "QuickLeet",
    "default_popup": "popup/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://leetcode.com/problems/*"
      ],
      "js": [
        "./content/content_script.js"
      ]
    },
    {
      "matches": [
        "*://leetcode.com/problems/*"
      ],
      "js": [
        "./content/main_world.js"
      ],
      "world": "MAIN"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a074804d-e60b-4753-ad03-6e8d64193bf4}"
    }
  }
}