* bump ts to v4

* MOAR RAM

* fix type errors for OSS

* first pass on x-pack errors

* second pass on x-pack type errors

* 3rd pass on x-pack type-errors

* mute errors if complex cases

* don't delete if spread suffices

* mute other complex cases

* make User fields optional

* fix optional types

* fix tests

* fix typings for time_range

* fix type errors in x-pack/tests

* rebuild kbn-pm

* remove leftovers from master update

* fix alert tests

* [Telemetry Checker] TS4 Fixes

* bump to 4.0.1-rc

* fix new errors in master

* bump typescript-eslint to version supporting TS v4 syntax

* fix merge commit errors

* update to the stable TS version 4.0.2

* bump ts-eslint to version supporting ts v4

* fix typo

* fix type errors after merge

* update ts in another new package.json

* TEMP: remove me

* Revert "TEMP: remove me"

This reverts commit dc0fc3b.

* [Telemetry] Update snapshot for new TS4 SyntaxKind

* bump prettier to support TS v4 syntax

* fix prettier rules

* last style change

* fix new type errors

Co-authored-by: Alejandro Fernández Haro <alejandro.haro@elastic.co>
# Conflicts:
#	packages/kbn-i18n/package.json
#	x-pack/plugins/uptime/public/components/settings/add_connector_flyout.tsx
#	x-pack/plugins/uptime/public/components/settings/alert_defaults_form.tsx