The "TypeError: api.now is not a function" error is a common issue that occurs in Vue.js applications when using an outdated version of the Vue Devtools Chrome extension with the Vue Router. This error indicates that the 'now' function, a part of the Vue Router API, is not recognized. Here is how to fix it.
A few days ago I came across this article. The author shows how to access a Drupal system in the backend with a Vue.js app. For authentication he uses an API key - and I find that dangerous. Here's why.