[mat-input] SSR crashes because of undefined functions

[arturovt]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

monitor and stopMonitoring methods should be defined

What is the current behavior?

Angular universal crashes with these errors
TypeError: this._autofillMonitor.monitor is not a function at MatInput.ngOnInit
TypeError: this._autofillMonitor.stopMonitoring is not a function at MatInput.ngOnDestroy

What are the steps to reproduce?

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

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

Angular 6.0.3

Is there anything else we should know?

I opened @angular/material/bundles/material-input.umd.js, found ngOnInit hook and added console.log(typeof this._autofillMonitor.monitor);, same with stopMonitoring
It printed two values - undefined and function, because this directive is instantiated twice, once on the server and on the client.

[anymos]

I've got the same error.

The workaround is described in
#11396 and angular/angular#23715

[arturovt]

@anymos Yeah, I've seen, I think it should be documented somehow

[anymos]

Agreed, wondering if it is going to be tough to fix actually in material lib

[josephperrott]

It looks like a solution for this is blocked on angular/angular#23715

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