web-speech-cognitive-services dependency is missing

When building with the latest 4.8.0 package the following error is produced:

ERROR in ./node_modules/botframework-webchat/lib/createCognitiveServicesBingSpeechPonyfillFactory.js
Module not found: Error: Can't resolve 'web-speech-cognitive-services/lib/BingSpeech' in 'C:\private\v4\BotBuilder-Samples\samples\javascript_es6\01.browser-echo\node_modules\botframework-webchat\lib'
 @ ./node_modules/botframework-webchat/lib/createCognitiveServicesBingSpeechPonyfillFactory.js 26:41-96
 @ ./node_modules/botframework-webchat/lib/index.js
 @ ./src/app.ts

Attempting a work around by explicitly adding the web-speech-cognitive-services/6.0.0 package to the application fixes the build issue but now the runtime fails. This is just seen as a blank screen in the brower-echo sample.

(Note in the process of updating the sample now you have to also add react and react-dom as explicit dependencies - this is intentional as it allows the application to choose which version of react it wants to use.)

[sgellock]

The team is working through how to get a fix out to address this. We are in a release lockdown due to current world events. but we’re working to see if we can get an exemption and get out a fix. we’ll post more data here as we gather it.

[yxc2010]

https://github.com/compulim/web-speech-cognitive-services/commit/d6224a4501286913a831f4edf17afd03c5c32699

Breaking changes

• As Bing Speech has deprecated and removed from Azure. Bing Speech support has been removed.

I downgraded to BotFramework-WebChat@4.6.0 for addressing this issue.

4.8.0 can’t be built now.