First try at Phoenix LiveView Hook organization

app.js

// assets/js/app.js

// We need to import the CSS so that webpack will load it.
// The MiniCssExtractPlugin is used to separate it out into
// its own CSS file.
import css from "../css/app.css"

// webpack automatically bundles all modules in your
// entry points. Those entry points can be configured
// in "webpack.config.js".
//
// Import dependencies
//
import "phoenix_html"

// Import local files
//
// Local files can be imported directly using relative paths, for example:
// import socket from "./socket"

import {Socket} from "phoenix"
import LiveSocket from "phoenix_live_view"

let Hooks = {};

import PhoneNumber from "./hooks/phone_number";
Hooks.PhoneNumber = PhoneNumber;

let liveSocket = new LiveSocket("/live", Socket, {hooks: Hooks}); // Updated for liveview 0.2
liveSocket.connect();

phone_number.js

// assets/js/hooks/phone_number.js

let PhoneNumber = {
  mounted() {
    console.log("mounted running");
    this.el.addEventListener("input", e => {
      console.log("match running");
      let match = this.el.value
        .replace(/\D/g, "")
        .match(/^(\d{3})(\d{3})(\d{4})$/);
      if (match) {
        console.log("trying to set");
        this.el.value = `${match[1]}-${match[2]}-${match[3]}`;
      }
    });
  }
};
export default PhoneNumber;