Examine source code of JP Dictionary Sidebar

{
  "manifest_version": 2,
  "name": "JP Dictionary Sidebar",
  "version": "1.4.4",
  "description": "네이버 일본어 사전을 사이드바에서 검색하고, 검색한 단어를 단어장에 저장합니다.",
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab",
    "downloads",
    "https://ja.dict.naver.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "jp-dict-sidebar@my-extension",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "sidebar_action": {
    "default_panel": "sidebar.html",
    "default_title": "JP Dictionary",
    "open_at_install": false
  },
  "browser_action": {
    "default_title": "JP Dictionary - 단어장"
  },
  "commands": {
    "search-jp-sidebar": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      },
      "description": "Search selected text in JP Dictionary"
    },
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+K"
      },
      "description": "Open word list popup"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://ja.dict.naver.com/*"
      ],
      "js": [
        "extract-meaning.js"
      ],
      "run_at": "document_idle"
    }
  ]
}