Examine source code of Tab Memory Saver

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.1.4",
  "icons": {
    "16": "/icons/Phosphophyllite-16.png",
    "32": "/icons/Phosphophyllite-32.png",
    "48": "/icons/Phosphophyllite-48.png",
    "96": "/icons/Phosphophyllite-96.png",
    "128": "/icons/Phosphophyllite-128.png"
  },
  "default_locale": "ja",
  "permissions": [
    "tabs",
    "storage",
    "alarms"
  ],
  "action": {
    "default_title": "__MSG_extensionName__",
    "default_icon": {
      "48": "/icons/Phosphophyllite-48.png"
    },
    "default_popup": "popup.html"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@tab-memory-saver.neru7.phos",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "open_in_tab": false,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.google.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}