As this is the only version range that we tested against in G3.
We will support newer versions of TypeScript soon 
after the Angular 5 release.

Closes #19750

PR Close #19787

PR Close #19773

References to resources (such as .css files) that are generated into
the `outDir` directory outside of `rootDir` would cause a spurious
compiler error about not being able to find a files that ends in
'.ngstyle.ts'.

Also fixed a minor issue in compiler error reporting

Fixes: #19765, #19767

PR Close #19770

PR Close #19766

PushEvent.data is not the data object itself, but an instance representing
the data in wire format, with methods to synchronously decode it to JSON,
ArrayBuffer, etc. NGSW assumes all push data is in JSON format.

PR Close #19764

When Cache.put() is called with a Response, it consumes the response. If
the Response is used for any other purpose (such as satisfying the
original FetchEvent) it must be cloned first.

A bug exists in the mocks used for SW tests, where this condition is not
validated. The bodies of MockResponses can be utilized repeatedly without
erroring in the same way that a real browser would. This bug is fixed by
this commit, which causes tests for the freshness strategy of data caching
to start failing.

The cause of this failure is a second bug in the data caching code, where
the Response is not cloned prior to being passed to Cache.put(). This is
also fixed.

PR Close #19764

Controller should be decorator I believe

PR Close #19762

PR Close #19748

PR Close #19674

Closes #18983

PR Close #19449

PR Close #19345

PR Close #19784

Revert "fix(router): RouterLinkActive should update its state right after checking the children (#19449)"

This reverts commit c569b752.
As it was synched together with 5a9ed2de
which broke an internal test.

This reverts commit 41f57aff.
As it was synched together with 5a9ed2de
which broke an internal test.

Revert "fix(animations): always fire inner trigger callbacks even if blocked by parent animations (#19753)"

This reverts commit 5a9ed2de.
As it broke an internal test.

Closes #19100

PR Close #19753

PR Close #19674

Closes #18983

PR Close #19449

See #19768
PR Close #19769

We were missing quite a bit of test coverage,
this is the start of recreating it.
PR Close #19703

PR Close #19527

See #19768

PR Close #19453

PR Close #19721

update ac 2017 dates

PR Close #19706

PR Close #19685

PR Close #19668

Fixes: #19485

PR Close #19582

PR Close #19693

fix(animations): ensure animateChild() works with all inner leave animations (#19006) (#19532) (#19693)

PR Close #19693

PR Close #19716

This is a local mod that was already applied in G3.

PR Close #19717

PR Close #19655

PR Close #19655

PR Close #19682

The 404 page will now run a search based on the given URL to offer
suggestions for the page that the user really wanted.

PR Close #19682

This will allow it to be used by an embedded component.

PR Close #19682