Selenium Webdriver: extending Navigation causes circular dependency issue - node.js

Question

I have a very simple app.ts file that looks like this:
import { Navigation, WebDriver } from "selenium-webdriver";
class MyWebDriver extends WebDriver {
navigate(): Navigation {
return new MyNavigation(this);
}
}
class MyNavigation extends Navigation {
constructor(driver: WebDriver) {
super(driver);
}
}
I have also installed the NPM package selenium-webdriver#4.0.0-alpha5 and I'm using NodeJS version 10.15.3.
Now when I build the project and run the app.js file on the command line, I get the following circular dependency exception:
C:\temp\MyTestNodejsProject>node app.js
C:\temp\MyTestNodejsProject\app.js:9
class MyNavigation extends selenium_webdriver_1.Navigation {
^
TypeError: Class extends value undefined is not a constructor or null
at Object.<anonymous> (C:\temp\MyTestNodejsProject\app.js:9:49)
at Module._compile (internal/modules/cjs/loader.js:701:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
at Module.load (internal/modules/cjs/loader.js:600:32)
at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
at Function.Module._load (internal/modules/cjs/loader.js:531:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:754:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
The above circular dependency exception is complaining about line 9 of the app.js file below:
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const selenium_webdriver_1 = require("selenium-webdriver");
class MyWebDriver extends selenium_webdriver_1.WebDriver {
navigate() {
return new MyNavigation(this);
}
}
class MyNavigation extends selenium_webdriver_1.Navigation {
constructor(driver) {
super(driver);
}
}
//# sourceMappingURL=app.js.map
Can someone please help me figure out how to fix this circular dependency? I've spent days on this and don't see where the circular dependency is happening. Please provide a working code snippet.
============ EDIT =============
I did a sanity check to make sure that Navigation was properly imported (to make sure that wasn't the issue) and modified the code to be:
import { Navigation, WebDriver } from "selenium-webdriver";
class MyWebDriver extends WebDriver {
navigate(): Navigation {
return new Navigation(this);
}
}
Then when I built & ran app.js, the circular dependency exception went away, and app.js ran just fine.