tests/cases/compiler/inheritanceStaticFuncOverridingAccessorOfFuncType.ts(2,16): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. ==== tests/cases/compiler/inheritanceStaticFuncOverridingAccessorOfFuncType.ts (1 errors) ==== class a { static get x(): () => string { ~ !!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher. return null; } } class b extends a { static x() { return "20"; } }