Examine source code of Discord Status Countdown

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "1.2.3",
  "background": {
    "scripts": [
      "background.4d37ad83.js"
    ]
  },
  "browser_action": {
    "default_icon": "icon.7c21137c.png",
    "default_title": "Discord Status Countdown",
    "default_popup": "menu.75b0eeed.html"
  },
  "icons": {
    "48": "icon.7c21137c.png",
    "96": "icon@2x.5959496a.png",
    "144": "icon@3x.4c59b360.png",
    "192": "icon@4x.d0517ebe.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "*://*.discord.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{bcf3fa8f-11a8-457a-b699-2f4cf9311f54}"
    }
  }
}