Javascript error that happens in Premiere but not in Chrome.

Hi,

I am working on a Premiere Pro panel and I basically want to upload a selected file from the current project to a remote server. Using a html input file tag and select a file works fine to upload a file. 

So my idea was to create a File object which i would then upload.  Something like :

upload() {

    var path = '/Users/me/my_file.mp3';

    // read all bytes from file likely using : window.cep.fs.readFile(path)

    var file = new File ([data], 'my_file.mp3');

     // call POST to start upload. That part is done and work.

}

As I am going step by step, my current code looks like :

upload() {

    var file = new File( ['my random content'] ,'random_name.txt');

     // call POST to start upload. That part is done and work.

}

It works works fine if run it in up to date Chrome (I also tried with an much older version (41.0.2272.89), which works too). Unfortunately, it crashes in Premiere and I have no clue why.

The crash happens on this line :

var file = new File(['my random content'], 'random_name.txt');

(a basic copy/paste in chrome console show that it works on regular chrome, and crash when paste in the remote debug console.)

with this error message :

Uncaught TypeError: File constructor cannot be called in nwdisabled frame.

message: "File constructor cannot be called in nwdisabled frame."

stack: (...)

get stack: function () { [native code] }

set stack: function () { [native code] }

__proto__: Error

VM110:2(anonymous function)

VM77:847InjectedScript._evaluateOn

VM77:780InjectedScript._evaluateAndWrap

VM77:646 InjectedScript.evaluate

Any explanation and suggestion to work around that issue would be greatly appreciated.