symbolType16.ts(6,1): error TS2454: Variable 'sym' is used before being assigned.


==== symbolType16.ts (1 errors) ====
    interface Symbol {
        newSymbolProp: number;
    }
    
    var sym: symbol;
    sym.newSymbolProp;
    ~~~
!!! error TS2454: Variable 'sym' is used before being assigned.