iOS 7.1 JavaScriptCore: Can't find variable: Float64Array

I'm using Node.js via NodeApp (using JavaScriptCore)

While i trying to execute simple script:

[_context evaluateScript:@"var temp64f = new Float64Array(1);"];

i'm getting error:

2014-09-30 14:31:43.318 NodeAppDemo[78825:60b] ReferenceError: Can't find variable: Float64Array stack: global code

Testing on ios simulator 7.1 and ipad air with ios 7.1.

Checked on ios 8 and it works on ios 8.