Examine source code of Memory Saver Hero

{
  "manifest_version": 3,
  "name": "Memory Saver",
  "version": "0.2.0",
  "description": "Automatically discard unused firefox tabs to save memory.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "tabs",
    "alarms",
    "storage",
    "sessions",
    "menus"
  ],
  "background": {
    "scripts": [
      "src/background/index.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "Memory Saver",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_popup": "src/popup/index.html"
  },
  "options_ui": {
    "page": "src/options/index.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@firefox-memory-saver-hero",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}