Modified require function doesn't use current file's path when imported

I'm using the proxyquire library, which mocks packages on import.

I'm creating my own proxyquire function, which stubs a variety of packages I use regularly and want to stub regularly (meteor packages, which have a special import syntax):

// myProxyquire.js
import proxyquire from 'proxyquire';

const importedStubs = {
  'meteor/meteor': { Meteor: { defer: () => {} } },
};

const myProxyquire = filePath => proxyquire(filePath, importedStubs);

export default myProxyquire;

Now I want to write a test of a file which uses one of these packages:

// src/myFunc.js
import { Meteor } from 'meteor/meteor'; // This import should be stubbed

export const myFunc = () => {
  Meteor.defer(() => console.log('hi')); // This call should be stubbed
  return 'test';
};

And finally I test it like this:

// src/myFunc.test.js
import myProxyquire from '../myProxyquire';

const { myFunc } = myProxyquire('./myFunc'); // error: ENOENT: no such file

describe('myFunc', () => {
  it("should return 'test'", () => {
    expect(myFunc()).to.equal('test');
  });
});

Note that my last 2 files are nested inside a subfolder src. So when I try to run this test, I get an error saying that the module ./myFunc couldn't be found, as it is being looked for in the "root" directory, where the myProxyquire.js file is, not the src directory as expected.