How to fix error ‘WooCommerce.get(…).then is not a function’?

I’m trying to start work with WooCommerce API – Node.js Client, which looks very straightforward.

But when I copy a simple example from WooCommerce official website, I get the following error:

TypeError: WooCommerce.get(…).then is not a function
Here is the code:

var WooCommerceAPI = require('woocommerce-api');

var WooCommerce = new WooCommerceAPI({
  url: 'https://somewebsite.com/',
  consumerKey: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',
  consumerSecret: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx',
  wpAPI: true,
  version: 'wc/v1'
});

WooCommerce.get("products/1359")
  .then((response) => {
    console.log(response.data);
  })
  .catch((error) => {
    console.log(error.response.data);
  });

API documents and NPM package:
https://woocommerce.github.io/woocommerce-rest-api-docs/#retrieve-a-product
https://www.npmjs.com/package/woocommerce-api