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tests/cases/compiler/classImplementsClass4.ts(5,7): error TS2720: Class 'C' incorrectly implements class 'A'. Did you mean to extend 'A' and inherit its members as a subclass?
Property 'x' is missing in type 'C' but required in type 'A'.
tests/cases/compiler/classImplementsClass4.ts(16,1): error TS2741: Property 'x' is missing in type 'C' but required in type 'A'.
==== tests/cases/compiler/classImplementsClass4.ts (2 errors) ====
class A {
private x = 1;
foo(): number { return 1; }
}
class C implements A {
~
!!! error TS2720: Class 'C' incorrectly implements class 'A'. Did you mean to extend 'A' and inherit its members as a subclass?
!!! error TS2720: Property 'x' is missing in type 'C' but required in type 'A'.
!!! related TS2728 tests/cases/compiler/classImplementsClass4.ts:2:13: 'x' is declared here.
foo() {
return 1;
}
}
class C2 extends A {}
var c: C;
var c2: C2;
c = c2;
c2 = c;
~~
!!! error TS2741: Property 'x' is missing in type 'C' but required in type 'A'.
!!! related TS2728 tests/cases/compiler/classImplementsClass4.ts:2:13: 'x' is declared here.
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