There are many places in the code that do `import Event, { ...} from '.../event'`.

We should always require an explicit type for this

Fixes #45652

fixes #45610

* Pick up TS 2.7

* Fix formatter in build script

* Fix build error for ts 2.7

* Pick up new ts format and tslint versions

* Update lock

* use 2.7.2 for build

* Formatting

* Pick up TS 2.7

* Fix formatter in build script

* Fix build error for ts 2.7

* Pick up new ts format and tslint versions

* Update lock

* use 2.7.2 for build

* Formatting