tests/cases/compiler/superCallFromClassThatHasNoBaseType1.ts(9,21): error TS2335: 'super' can only be referenced in a derived class. ==== tests/cases/compiler/superCallFromClassThatHasNoBaseType1.ts (1 errors) ==== class A { constructor(private map: (value: number) => string) { } } class B { constructor() { super(value => String(value)); } ~~~~~ !!! error TS2335: 'super' can only be referenced in a derived class. }