easy-going-rails/app/javascript/application.js

// Js Controllers
import "controllers"

// Turbo
import "@hotwired/turbo-rails"
Turbo.setProgressBarDelay(300)

// Toastify
import Toastify from 'toastify-js'
window.Toastify = Toastify

// Font Awesome
import { far } from "@fortawesome/free-regular-svg-icons"
import { fas } from "@fortawesome/free-solid-svg-icons"
import { fab } from "@fortawesome/free-brands-svg-icons"
import { library } from "@fortawesome/fontawesome-svg-core"
import "@fortawesome/fontawesome-free"
library.add(far, fas, fab)
FontAwesome.config.mutateApproach = 'sync' // prevents flickering