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tests/cases/compiler/conflictingMemberTypesInBases.ts(12,11): error TS2320: Interface 'E' cannot simultaneously extend types 'B' and 'D'.
Named property 'm' of types 'B' and 'D' are not identical.
==== tests/cases/compiler/conflictingMemberTypesInBases.ts (1 errors) ====
interface A {
m: string;
}
interface B extends A {
}
interface C {
m: number;
}
interface D extends C {
}
interface E extends B { } // Error here for extending B and D
~
!!! error TS2320: Interface 'E' cannot simultaneously extend types 'B' and 'D'.
!!! error TS2320: Named property 'm' of types 'B' and 'D' are not identical.
interface E extends D { } // No duplicate error here
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