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manifest.json
{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "RShift to Google Calendar",
  "version": "1.0",
  "permissions": [
    "storage",
    "identity",
    "activeTab"
  ],
  "host_permissions": [
    "https://calendar.googleapis.com/*"
  ],
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.rshift.jp/staffpage/*",
        "https://*.rshift.jp/staffpage/"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "oauth2": {
    "client_id": "686981993663-3k0fc2gpipbg0qkkf4u8od1futfs2dg1.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/calendar.events",
      "https://www.googleapis.com/auth/userinfo.profile"
    ]
  },
  "default_locale": "en"
}