tests/cases/conformance/es2019/globalThisReadonlyProperties.ts(1,12): error TS2540: Cannot assign to 'globalThis' because it is a read-only property.
tests/cases/conformance/es2019/globalThisReadonlyProperties.ts(5,12): error TS2339: Property 'y' does not exist on type 'typeof globalThis'.


==== tests/cases/conformance/es2019/globalThisReadonlyProperties.ts (2 errors) ====
    globalThis.globalThis = 1 as any // should error
               ~~~~~~~~~~
!!! error TS2540: Cannot assign to 'globalThis' because it is a read-only property.
    var x = 1
    const y = 2
    globalThis.x = 3
    globalThis.y = 4 // should error
               ~
!!! error TS2339: Property 'y' does not exist on type 'typeof globalThis'.
    