export type UnrollOnHover<O extends object> = O extends object ?
    { [K in keyof O]: O[K]; } :
    never;


export type Schema = Record<string, unknown>;
class Table<S extends Schema>  {
    __schema!: S;

    // Removing this line, removes the error 
    getRows<C extends keyof S>(): Array<UnrollOnHover<Pick<S, C>>> {
        return null!
    }
}

class ColumnSelectViewImp<S extends Schema> extends Table<S> { }


const ColumnSelectView1: new <S extends Schema>() => Table<UnrollOnHover<S>> = ColumnSelectViewImp;
const ColumnSelectView2: new <S extends Schema>() => Table<UnrollOnHover<S>> = Table;