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tests/cases/compiler/excessPropertyCheckWithEmptyObject.ts(4,58): error TS2345: Argument of type '{ value: string; readonly: boolean; }' is not assignable to parameter of type 'PropertyDescriptor & ThisType<any>'.
Object literal may only specify known properties, and 'readonly' does not exist in type 'PropertyDescriptor & ThisType<any>'.
tests/cases/compiler/excessPropertyCheckWithEmptyObject.ts(9,30): error TS2322: Type '{ y: number; }' is not assignable to type 'A & ThisType<any>'.
Object literal may only specify known properties, and 'y' does not exist in type 'A & ThisType<any>'.
tests/cases/compiler/excessPropertyCheckWithEmptyObject.ts(14,34): error TS2322: Type '{ y: string; }' is not assignable to type 'Empty & { x: number; }'.
Object literal may only specify known properties, and 'y' does not exist in type 'Empty & { x: number; }'.
==== tests/cases/compiler/excessPropertyCheckWithEmptyObject.ts (3 errors) ====
// Repro from #14910
// Excess property error expected here
Object.defineProperty(window, "prop", { value: "v1.0.0", readonly: false });
~~~~~~~~~~~~~~~
!!! error TS2345: Argument of type '{ value: string; readonly: boolean; }' is not assignable to parameter of type 'PropertyDescriptor & ThisType<any>'.
!!! error TS2345: Object literal may only specify known properties, and 'readonly' does not exist in type 'PropertyDescriptor & ThisType<any>'.
interface A { x?: string }
// Excess property error expected here
let a: A & ThisType<any> = { y: 10 };
~~~~~
!!! error TS2322: Type '{ y: number; }' is not assignable to type 'A & ThisType<any>'.
!!! error TS2322: Object literal may only specify known properties, and 'y' does not exist in type 'A & ThisType<any>'.
interface Empty {}
// Excess property error expected here
let x: Empty & { x: number } = { y: "hello" };
~~~~~~~~~~
!!! error TS2322: Type '{ y: string; }' is not assignable to type 'Empty & { x: number; }'.
!!! error TS2322: Object literal may only specify known properties, and 'y' does not exist in type 'Empty & { x: number; }'.
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