Demonstrate utility of async / await vs. promise.then when coordinating async calls

promises.ts

/*
  For a more formal explanation, see https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Asynchronous/Async_await
*/

// This is not preferred
thenChaining = () => {
  this.somePromise().then(value => {
    this.nextPromise().then(nextValue => {
      /*
        So on and so forth. This gets super ugly
        super quick, and makes tracing errors
        more difficult than it needs to be.
      */
    });
  });
}

// This is preferred
asyncChaining = async () => {
  const value = await this.somePromise();
  const nextValue = await this.nextPromise();

  /*
    So on and so forth. This makes the flow of execution
    easier to understand and has the added benefit of being
    optimized to run faster than traditional promises.
  */
}