tests/cases/compiler/inheritanceMemberAccessorOverridingMethod.ts(8,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
tests/cases/compiler/inheritanceMemberAccessorOverridingMethod.ts(11,9): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
tests/cases/compiler/inheritanceMemberAccessorOverridingMethod.ts(7,7): error TS2415: Class 'b' incorrectly extends base class 'a'.
  Types of property 'x' are incompatible.
    Type 'string' is not assignable to type '() => string'.
tests/cases/compiler/inheritanceMemberAccessorOverridingMethod.ts(8,9): error TS2423: Class 'a' defines instance member function 'x', but extended class 'b' defines it as instance member accessor.


==== tests/cases/compiler/inheritanceMemberAccessorOverridingMethod.ts (4 errors) ====
    class a {
        x() {
            return "20";
        }
    }
    
    class b extends a {
          ~
!!! error TS2415: Class 'b' incorrectly extends base class 'a'.
!!! error TS2415:   Types of property 'x' are incompatible.
!!! error TS2415:     Type 'string' is not assignable to type '() => string'.
        get x() {
            ~
!!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
            ~
!!! error TS2423: Class 'a' defines instance member function 'x', but extended class 'b' defines it as instance member accessor.
            return "20";
        }
        set x(aValue: string) {
            ~
!!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
    
        }
    }