Code no longer Valid on VS Update?

Code may no longer be valid in VS Code March-April 2020 due to 'create project file' capability no longer being functional or initial code not running properly.

On downloading your files, file name 'tsconfig.json' is not in your code, but can be seen in your video.

In your video on looking at VSCode the first time, your terminal showing

~/D/p/t/react-native-web-workout-series on master

looks different from my terminal which reads like:

Try the new cross-platform PowerShell https://aka.ms/pscore6

PS C:\Users\wjbro\Documents\GitHub\react-native-web-series> yarn create
yarn : The term 'yarn' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ yarn create
+ ~~~~
+ CategoryInfo : ObjectNotFound: (yarn:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException

PS C:\Users\wjbro\Documents\GitHub\react-native-web-series>

yarn create not functioning.

Start by reproducing the reported `yarn create` failure in PowerShell and compare the project files with the VS Code March-April 2020 workflow shown in the video. Check the presence of `tsconfig.json`; done means the documented project-creation command works, the file is included, and the initial code runs.

Written by the indexing model from the issue text.