Please create an Offline DirectLine Emulation that is supported by Microsoft.

If you have industry standards that prohibit Ngrok this can make debugging a nightmare.

The Bot Framework Emulator has a built in Direct Line Controller. Why is this not open source for use with webchat? There are a few brave souls who have attempted to build emulators however both do not support Direct Line App Service Extensions and WebSocket.

Microsoft should support offline-directline implementations officially.

Examples:
https://github.com/newbienewbie/InDirectLine
https://www.npmjs.com/package/offline-directline

まず、Bot Framework Emulator に組み込まれている Direct Line Controller と、参照されている InDirectLine および offline-directline の実装を確認します。それらの Direct Line App Service Extensions と WebSocket に対するサポートを比較し、そのうえで公式にサポートされるオフライン実装の範囲と受け入れ基準を明確にします。