The Tor Browser / file revision

 // The Set constructor throws TypeError when passed a non-iterable argument.

 load(libdir + "asserts.js");

 function argsobj() { return arguments; }

 var misc = [

     {}, {x: 1}, Math, isNaN,

     Object.create(null),

     argsobj(0, 1, 2),

     null,

     true, 0, 3.1416,

     new Boolean(true), new Number(0),

     {iterator: function () { return undefined; }},

     {iterator: function () { return null; }},

     {iterator: function () { return true; }},

     {iterator: function () { return 17; }},

 ];

 for (var v of misc) {

     assertThrowsInstanceOf(function () { Set(v); }, TypeError);

     assertThrowsInstanceOf(function () { Map(v); }, TypeError);

 }