ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts(4,9): error TS2564: Property 'x' has no initializer and is not definitely assigned in the constructor.
ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts(5,9): error TS2564: Property 'y' has no initializer and is not definitely assigned in the constructor.
ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts(11,9): error TS2564: Property 'z' has no initializer and is not definitely assigned in the constructor.


==== ExportClassWithAccessibleTypesInTypeParameterConstraintsClassHeritageListMemberTypeAnnotations.ts (3 errors) ====
    namespace A {
    
        export class Point {
            x: number;
            ~
!!! error TS2564: Property 'x' has no initializer and is not definitely assigned in the constructor.
            y: number;
            ~
!!! error TS2564: Property 'y' has no initializer and is not definitely assigned in the constructor.
        }
    
        export var Origin: Point = { x: 0, y: 0 };
    
        export class Point3d extends Point {
            z: number;
            ~
!!! error TS2564: Property 'z' has no initializer and is not definitely assigned in the constructor.
        }
    
        export var Origin3d: Point3d = { x: 0, y: 0, z: 0 };
    
        export class Line<TPoint extends Point>{
            constructor(public start: TPoint, public end: TPoint) { }
        }
    }
    