React Native Expo with Bugsnag Sourcemaps bugsnag-eas-build-on-success 未找到

问：

我正在尝试让源图用于 expo 49 项目。

Bugsnag 文档说要将其添加到package.json

  "scripts": {
      ...
      "eas-build-on-success": "npx bugsnag-eas-build-on-success"
  }

但是，每当通过构建时，我都会收到此错误：$ eas build -p ios

404 Not Found - GET https://registry.yarnpkg.com/bugsnag-eas-build-on-success - Not found

我已经搜索了 yarn 和 npm，这个包（bugsnag-eas-build-on-success）似乎不存在。任何帮助将不胜感激！