Examine source code of YoPra

{
  "applications": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{97dbc040-e946-416f-bd2d-d08be8feed98}"
    }
  },
  "manifest_version": 2,
  "version": "0.9",
  "name": "YoPra",
  "short_name": "YoPra",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    },
    "default_title": "__MSG_extDefaultTitle__"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.yodobashi.com/product/*"
      ],
      "css": [
        "mystyles.css"
      ],
      "js": [
        "lib/jquery-3.5.1.min.js",
        "lib/Chart.bundle.min.js",
        "proc_Graph.js",
        "contentscript.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "lib/aws-sdk-2.734.0.min.js",
      "eventpage.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  }
}