demo-app is not runnabe

[e-cloud]

Bug, feature request, or proposal:

bug

What is the expected behavior?

we should be able run demo-app without errors on master branch

What is the current behavior?

running demo-app prompts a lot of errors and unable to start the server.

What are the steps to reproduce?

1. pull the master branch, my current ref is: 0b2757c
2. install deps with yarn
3. run yarn demo-app

What is the use-case or motivation for changing an existing behavior?

we should ensure someone who changes the source will also update the demo code to prove its correctness to a certain extent.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

not sure

Is there anything else we should know?

I suggest putting the demo-app deployment command into CI scripts. Not for deployment but for testing.

[e-cloud]

@crisbeto can you point out the PR number?

[crisbeto]

#8811 and #8824 @e-cloud.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}