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tests/cases/compiler/classImplementsClass2.ts(2,7): error TS2720: Class 'C' incorrectly implements class 'A'. Did you mean to extend 'A' and inherit its members as a subclass?
Property 'foo' is missing in type 'C' but required in type 'A'.
tests/cases/compiler/classImplementsClass2.ts(13,1): error TS2741: Property 'foo' is missing in type 'C' but required in type 'C2'.
==== tests/cases/compiler/classImplementsClass2.ts (2 errors) ====
class A { foo(): number { return 1; } }
class C implements A {} // error
~
!!! error TS2720: Class 'C' incorrectly implements class 'A'. Did you mean to extend 'A' and inherit its members as a subclass?
!!! error TS2720: Property 'foo' is missing in type 'C' but required in type 'A'.
!!! related TS2728 tests/cases/compiler/classImplementsClass2.ts:1:11: 'foo' is declared here.
class C2 extends A {
foo() {
return 1;
}
}
var c: C;
var c2: C2;
c = c2;
c2 = c;
~~
!!! error TS2741: Property 'foo' is missing in type 'C' but required in type 'C2'.
!!! related TS2728 tests/cases/compiler/classImplementsClass2.ts:5:5: 'foo' is declared here.
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