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classIsSubtypeOfBaseType.types
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49 lines (41 loc) · 1010 Bytes
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//// [tests/cases/conformance/classes/classDeclarations/classHeritageSpecification/classIsSubtypeOfBaseType.ts] ////
=== classIsSubtypeOfBaseType.ts ===
class Base<T> {
>Base : Base<T>
> : ^^^^^^^
foo: T;
>foo : T
> : ^
}
class Derived extends Base<{ bar: string; }> {
>Derived : Derived
> : ^^^^^^^
>Base : Base<{ bar: string; }>
> : ^^^^^^^^^^^^ ^^^^
>bar : string
> : ^^^^^^
foo: {
>foo : { bar: string; baz: number; }
> : ^^^^^^^ ^^^^^^^ ^^^
bar: string; baz: number; // ok
>bar : string
> : ^^^^^^
>baz : number
> : ^^^^^^
}
}
class Derived2 extends Base<{ bar: string; }> {
>Derived2 : Derived2
> : ^^^^^^^^
>Base : Base<{ bar: string; }>
> : ^^^^^^^^^^^^ ^^^^
>bar : string
> : ^^^^^^
foo: {
>foo : { bar?: string | undefined; }
> : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
bar?: string; // error
>bar : string | undefined
> : ^^^^^^^^^^^^^^^^^^
}
}