51 lines
2.1 KiB
Plaintext
51 lines
2.1 KiB
Plaintext
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality2.ts(10,11): error TS2430: Interface 'S' incorrectly extends interface 'T'.
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Property 'Foo' is optional in type 'S' but required in type 'T'.
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tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality2.ts(18,11): error TS2430: Interface 'S2' incorrectly extends interface 'T2'.
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Property '1' is optional in type 'S2' but required in type 'T2'.
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tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality2.ts(26,11): error TS2430: Interface 'S3' incorrectly extends interface 'T3'.
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Property ''1'' is optional in type 'S3' but required in type 'T3'.
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==== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembersOptionality2.ts (3 errors) ====
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// Derived member is optional but base member is not, should be an error
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interface Base { foo: string; }
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interface Derived extends Base { bar: string; }
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interface T {
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Foo: Base;
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}
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interface S extends T {
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~
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!!! error TS2430: Interface 'S' incorrectly extends interface 'T'.
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!!! error TS2430: Property 'Foo' is optional in type 'S' but required in type 'T'.
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Foo?: Derived // error
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}
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interface T2 {
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1: Base;
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}
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interface S2 extends T2 {
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~~
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!!! error TS2430: Interface 'S2' incorrectly extends interface 'T2'.
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!!! error TS2430: Property '1' is optional in type 'S2' but required in type 'T2'.
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1?: Derived; // error
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}
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interface T3 {
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'1': Base;
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}
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interface S3 extends T3 {
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~~
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!!! error TS2430: Interface 'S3' incorrectly extends interface 'T3'.
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!!! error TS2430: Property ''1'' is optional in type 'S3' but required in type 'T3'.
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'1'?: Derived; // error
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}
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// object literal case
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var a: { Foo: Base; }
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var b: { Foo?: Derived; }
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var r = true ? a : b; // ok |