Examine source code of Auto Tab Reaper

{
  "manifest_version": 2,
  "name": "Auto Tab Reaper",
  "version": "1.1",
  "description": "Automatically discard or suspend tabs after a short amount of time to preserve system resources",
  "homepage_url": "https://github.com/solarnz/auto-tab-reaper",
  "icons": {
    "48": "icons/reaper-48.png"
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "menus",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tabreaper@solarnz.dev"
    }
  }
}