Examine source code of Memory Box

{
  "manifest_version": 2,
  "name": "Memory Box",
  "version": "2.6.4.2",
  "description": "Five boxes, growing intervals, CSV in and out. A small local deck trainer with no account and no sync.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7ab22d7-f9ef-4ccf-9c15-451ded49c180}",
      "strict_min_version": "101.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_title": "Memory Box",
    "default_popup": "scripts/popup.html",
    "default_icon": {
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "64": "icons/icon-64.png",
      "96": "icons/icon-96.png",
      "128": "icons/icon-128.png"
    }
  },
  "permissions": [
    "storage",
    "contextMenus",
    "notifications",
    "alarms"
  ],
  "background": {
    "scripts": [
      "scripts/core.js",
      "scripts/background.js"
    ]
  }
}