`innerText` is not supported in Firefox prior to v45. In most cases (at least
the ones we are interested in), `innerText` and `textContent` work equally well,
but `textContent` is more performant (as it doesn't require a reflow).
From [MDN][1] on the differences of `innerText` vs `textContent`:
> - [...]
> - `innerText` is aware of style and will not return the text of hidden
> elements, whereas `textContent` will.
> - As `innerText` is aware of CSS styling, it will trigger a reflow, whereas
> `textContent` will not.
> - [...]
[1]: https://developer.mozilla.org/en-US/docs/Web/API/Node/textContent#Differences_from_innerTextFixes#17585
By reflex we began all component tests with an async `beforeEach` that called `compileComponents`.
In at least one case (`live-example.component.spec.ts`) that led to the `it` tests being async as well.
There is no need to call `.compileComponents` because CLI web pack + plugin inlines all templates and styles.
While `.compileComponents` was harmless, it added complexity and distraction which we should not inflict on future readers and testers.
Angular change detection bug -> no page update on resize.
Reverting to `@HostListener('window:resize', ['$event.target.innerWidth'])` cures it.
Delete DeviceService which no longer serves a purpose.
Adjusted affected AppComponent and LiveExample tests.
PR Close#16143
Regular plunker is unusable on narrow screen
Refactors LiveExampleComponent and adds tests.
Refactor width detection to `DeviceService` because need to know width change in 2 places.
Keep “disable” option add in earlier spikes because simple and potentially useful in future.
