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tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(17,15): error TS2430: Interface 'B' incorrectly extends interface 'A'.
Types of property 'bar' are incompatible.
Type 'string' is not assignable to type 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(27,15): error TS2430: Interface 'B2' incorrectly extends interface 'A2'.
Types of property '2.0' are incompatible.
Type 'string' is not assignable to type 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(37,15): error TS2430: Interface 'B3' incorrectly extends interface 'A3'.
Types of property ''2.0'' are incompatible.
Type 'string' is not assignable to type 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(50,15): error TS2430: Interface 'B' incorrectly extends interface 'A'.
Types of property 'bar' are incompatible.
Type 'string' is not assignable to type 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(60,15): error TS2430: Interface 'B2' incorrectly extends interface 'A2'.
Types of property '2.0' are incompatible.
Type 'string' is not assignable to type 'Base'.
tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts(70,15): error TS2430: Interface 'B3' incorrectly extends interface 'A3'.
Types of property ''2.0'' are incompatible.
Type 'string' is not assignable to type 'Base'.
==== tests/cases/conformance/types/typeRelationships/subtypesAndSuperTypes/subtypingWithObjectMembers2.ts (6 errors) ====
interface Base {
foo: string;
}
interface Derived extends Base {
bar: string;
}
// N and M have the same name, same accessibility, same optionality, and N is a subtype of M
// foo properties are valid, bar properties cause errors in the derived class declarations
module NotOptional {
interface A {
foo: Base;
bar: Base;
}
interface B extends A {
~
!!! error TS2430: Interface 'B' incorrectly extends interface 'A'.
!!! error TS2430: Types of property 'bar' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
foo: Derived; // ok
bar: string; // error
}
interface A2 {
1: Base;
2.0: Base;
}
interface B2 extends A2 {
~~
!!! error TS2430: Interface 'B2' incorrectly extends interface 'A2'.
!!! error TS2430: Types of property '2.0' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
1: Derived; // ok
2: string; // error
}
interface A3 {
'1': Base;
'2.0': Base;
}
interface B3 extends A3 {
~~
!!! error TS2430: Interface 'B3' incorrectly extends interface 'A3'.
!!! error TS2430: Types of property ''2.0'' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
'1': Derived; // ok
'2.0': string; // error
}
}
// same cases as above but with optional
module Optional {
interface A {
foo?: Base;
bar?: Base;
}
interface B extends A {
~
!!! error TS2430: Interface 'B' incorrectly extends interface 'A'.
!!! error TS2430: Types of property 'bar' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
foo?: Derived; // ok
bar?: string; // error
}
interface A2 {
1?: Base;
2.0?: Base;
}
interface B2 extends A2 {
~~
!!! error TS2430: Interface 'B2' incorrectly extends interface 'A2'.
!!! error TS2430: Types of property '2.0' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
1?: Derived; // ok
2?: string; // error
}
interface A3 {
'1'?: Base;
'2.0'?: Base;
}
interface B3 extends A3 {
~~
!!! error TS2430: Interface 'B3' incorrectly extends interface 'A3'.
!!! error TS2430: Types of property ''2.0'' are incompatible.
!!! error TS2430: Type 'string' is not assignable to type 'Base'.
'1'?: Derived; // ok
'2.0'?: string; // error
}
}
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