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=== tests/cases/conformance/types/objectTypeLiteral/methodSignatures/objectTypesWithOptionalProperties.ts ===
// Basic uses of optional properties
var a: {
>a : { x?: number; }
x?: number; // ok
>x : number
}
interface I {
x?: number; // ok
>x : number
}
class C {
>C : C
x?: number; // ok
>x : number
}
interface I2<T> {
x?: T; // ok
>x : T
}
class C2<T> {
>C2 : C2<T>
x?: T; // ok
>x : T
}
var b = {
>b : { x: number; }
>{ x?: 1 // error} : { x: number; }
x?: 1 // error
>x : number
>1 : 1
}
|
