rails-ujs is deprecated so stop depending on it

Author: jcoyne

app/assets/javascripts/spotlight/spotlight.esm.js

@@ -1,4 +1,5 @@
 import { addImageSelector } from 'add_image_selector'
+import Spotlight from 'spotlight'
 
 export default class Crop {
   constructor(cropArea) {
@@ -253,8 +254,6 @@ export default class Crop {
   }
 
   uploadFile() {
-    // Set a ujs adapter to support both rails-ujs and jquery-ujs
-    var ujs = typeof Rails === 'undefined' ? $.rails : Rails;
     var url = this.fileInput.data('endpoint')
     // Every post creates a new image/masthead.
     // Because they create IIIF urls which are heavily cached.
@@ -266,7 +265,7 @@ export default class Crop {
       // Form data
       data: this.getData(),
       headers: {
-        'X-CSRF-Token': ujs.csrfToken() || ''
+        'X-CSRF-Token': Spotlight.csrfToken() || ''
       },
       //Options to tell jQuery not to process data or worry about content-type.
       cache: false,

app/assets/javascripts/spotlight/spotlight.esm.js.map

@@ -4,14 +4,12 @@ import Spotlight from 'spotlight'
 
 export default class {
   connect(){
-    // Set a ujs adapter to support both rails-ujs and jquery-ujs
-    var ujs = typeof Rails === 'undefined' ? $.rails : Rails;
     SirTrevor.setDefaults({
       iconUrl: Spotlight.sirTrevorIcon,
       uploadUrl: $('[data-attachment-endpoint]').data('attachment-endpoint'),
       ajaxOptions: {
         headers: {
-          'X-CSRF-Token': ujs.csrfToken() || ''
+          'X-CSRF-Token': Spotlight.csrfToken() || ''
         },
         credentials: 'same-origin'
       }

app/assets/javascripts/spotlight/spotlight.js

@@ -10,6 +10,9 @@ const Spotlight = function() {
         buffer[i].call();
       }
     },
+    csrfToken: function () {
+      return document.querySelector('meta[name=csrf-token]')?.content
+    },
     ZprLinks: {
       close: "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24\" viewBox=\"0 0 24 24\" width=\"24\"><path d=\"M0 0h24v24H0V0z\" fill=\"none\"/><path d=\"M19 6.41L17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z\"/></svg>",
       zoomIn: "<svg xmlns=\"http://www.w3.org/2000/svg\" height=\"24\" viewBox=\"0 0 24 24\" width=\"24\"><path d=\"M0 0h24v24H0V0z\" fill=\"none\"/><path d=\"M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14zm.5-7H9v2H7v1h2v2h1v-2h2V9h-2z\"/></svg>\n",