Adds tests

Author: orta

tests/baselines/reference/globalThisBlockscopedProperties.types

@@ -10,7 +10,7 @@ tests/cases/compiler/intersectionsOfLargeUnions2.ts(31,15): error TS2536: Type '
         interface ElementTagNameMap {
                   ~~~~~~~~~~~~~~~~~
 !!! error TS2300: Duplicate identifier 'ElementTagNameMap'.
-!!! related TS6203 /.ts/lib.dom.d.ts:18221:6: 'ElementTagNameMap' was also declared here.
+!!! related TS6203 /.ts/lib.dom.d.ts:18259:6: 'ElementTagNameMap' was also declared here.
             [index: number]: HTMLElement
         }
 

tests/baselines/reference/intersectionsOfLargeUnions2.errors.txt

@@ -129,7 +129,7 @@ function test(required1: () => boolean, required2: () => boolean, b: boolean, op
 >f.apply : (this: Function, thisArg: any, argArray?: any) => any
 >f : () => void
 >apply : (this: Function, thisArg: any, argArray?: any) => any
->parent : Window | null
+>parent : Window
 >[] : never[]
 
     // error

tests/baselines/reference/mappedTypeRecursiveInference.errors.txt

@@ -2,7 +2,7 @@
 // This API is only in webworker
 importScripts("")
 >importScripts("") : void
->importScripts : (...urls: string[]) => void
+>importScripts : (...urls: (string | URL)[]) => void
 >"" : ""
 
 // This should not raise a compiler error