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=== tests/cases/compiler/unaryPlus.ts ===
// allowed per spec
var a = +1;
>a : number
>+1 : 1
>1 : 1
var b = +(<any>"");
>b : number
>+(<any>"") : number
>(<any>"") : any
><any>"" : any
>"" : ""
enum E { some, thing };
>E : E
>some : E.some
>thing : E.thing
var c = +E.some;
>c : number
>+E.some : number
>E.some : E.some
>E : typeof E
>some : E.some
// also allowed, used to be errors
var x = +"3"; //should be valid
>x : number
>+"3" : number
>"3" : "3"
var y = -"3"; // should be valid
>y : number
>-"3" : number
>"3" : "3"
var z = ~"3"; // should be valid
>z : number
>~"3" : number
>"3" : "3"
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