Examine source code of AssetConnect for Firefox

{
  "manifest_version": 3,
  "name": "__MSG_title__",
  "version": "1.0.2",
  "default_locale": "ja",
  "description": "__MSG_description__",
  "permissions": [
    "downloads",
    "storage",
    "unlimitedStorage",
    "contextMenus"
  ],
  "host_permissions": [
    "*://*.booth.pm/*",
    "https://assetconnect.sakurayuki.dev/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "AssetConnect@sakurayuki.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon/icon16.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://accounts.booth.pm/library*"
      ],
      "js": [
        "shared/translation-manager.js",
        "download-log/booth_library.js"
      ]
    },
    {
      "matches": [
        "https://*.booth.pm/items/*",
        "https://booth.pm/*/items/*"
      ],
      "js": [
        "shared/translation-manager.js",
        "download-log/booth_shoppage.js"
      ]
    },
    {
      "matches": [
        "https://*.booth.pm/items/*",
        "https://booth.pm/*/items/*"
      ],
      "js": [
        "shared/debug-logger.js",
        "shared/error-handler.js",
        "shared/translation-manager.js",
        "avatar-clipboard/utils/storage-manager.js",
        "avatar-clipboard/utils/ui-manager.js",
        "avatar-clipboard/utils/booth-json-client.js",
        "avatar-clipboard/utils/page-parser.js",
        "avatar-clipboard/utils/clipboard-manager.js",
        "avatar-clipboard/booth_item_management.js"
      ],
      "css": [
        "avatar-clipboard/styles/item_management.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://accounts.booth.pm/orders/*"
      ],
      "js": [
        "shared/translation-manager.js",
        "download-log/booth_order.js"
      ]
    },
    {
      "matches": [
        "https://booth.pm/gifts/*"
      ],
      "js": [
        "shared/translation-manager.js",
        "download-log/booth_gift.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "avatar-clipboard/styles/*",
        "storage-management/storage-overview.html",
        "storage-management/storage-overview.js",
        "storage-management/import.html",
        "storage-management/import.js",
        "storage-management/import-csv.html",
        "storage-management/import-csv.js",
        "_locales/*/messages.json"
      ],
      "matches": [
        "*://*.booth.pm/*",
        "*://booth.pm/*"
      ]
    }
  ]
}