Vue.js provides the vue-devtools utility to help programmers debug Vue applications. Vuex enhances this tool to keep track of every mutation committed.
You can install this utility as an extension for Chrome or FireFox, or you can navigate to https://github.com/vuejs/vue-devtools for instructions on how to install it.
Start the EveryNote application by typing npm start, open Google Chrome with vue-devtools installed at http://localhost:8080/, then press F12.