With @angular/[email protected] or @angular/[email protected], when you run angular-playground angular-playground.json, you get the following error message:
[ng serve]: Tried to find bootstrap code, but could not. Specify either statically analyzable bootstrap code or pass in an entryModule to the p
lugins options.
Running npm start works just fine.
I reproduced by taking your example-app-angular-cli, updating the @angular/cli version and running npm i && npm run playground.
Thanks.