tests/cases/compiler/inheritanceStaticPropertyOverridingMethod.ts(7,7): error TS2417: Class static side 'typeof b' incorrectly extends base class static side 'typeof a'. Types of property 'x' are incompatible. Type 'string' is not assignable to type '() => string'. ==== tests/cases/compiler/inheritanceStaticPropertyOverridingMethod.ts (1 errors) ==== class a { static x() { return "20"; } } class b extends a { ~ !!! error TS2417: Class static side 'typeof b' incorrectly extends base class static side 'typeof a'. !!! error TS2417: Types of property 'x' are incompatible. !!! error TS2417: Type 'string' is not assignable to type '() => string'. static x: string; }