Ecmascript 2016 testing - mock class using babel rewire

I have following file with class Project

// project.js
export default class Project {
    static get name() {
    return "some name"
    }
}

And test when I want to mock name get method. I was trying two ways

import {Project, __RewireAPI__ as ProjectRewireAPI} from ".project"
...
class MockProject {
  static get currentSlideId() {
    return "SlideId";
  }
}
ProjectRewireAPI.__Rewire__('Project', MockProject);
console.log("Mock project", Project); // undefined
...

and doesn't override the class globally.

Second idea

import Project from ".Project";
import sinon from "sinon";

...
var MockProject = sinon.stub();
MockProject.prototype.name = sinon.stub();
sinon.stub(MockProject, 'name', {get: () => { return "new name"}});

ProjectRewireAPI.__Rewire__('Project', MockProject);
...

but it throws

Attempted to wrap undefined property name as function
wrapMethod@/node_modules/sinon/lib/sinon/util/core.js:106:0 

I don't know how to do it properly and asking for your help.