=== tests/cases/compiler/unaryPlus.ts ===
// allowed per spec
var a = +1;
>a : number
>+1 : number
>1 : number

var b = +(<any>"");
>b : number
>+(<any>"") : number
>(<any>"") : any
><any>"" : any
>"" : string

enum E { some, thing };
>E : E
>some : E
>thing : E

var c = +E.some;
>c : number
>+E.some : number
>E.some : E
>E : typeof E
>some : E

// also allowed, used to be errors
var x = +"3"; //should be valid
>x : number
>+"3" : number
>"3" : string

var y = -"3"; // should be valid
>y : number
>-"3" : number
>"3" : string

var z = ~"3"; // should be valid
>z : number
>~"3" : number
>"3" : string