maint(pat inject): Modernize code.

Author: thet

src/pat/inject/inject.js

@@ -960,7 +960,6 @@ const inject = {
         return $html;
     },
 
-    // XXX: hack
     _initAutoloadVisible($el, cfgs) {
         if ($el.data("pat-inject-autoloaded")) {
             // ignore executed autoloads
@@ -980,7 +979,7 @@ const inject = {
         };
         $el.click(trigger);
 
-        // Use case 1: a (heigh-constrained) scrollable parent
+        // Use case 1: a (height-constrained) scrollable parent
         if ($scrollable.length) {
             // if scrollable parent and visible -> trigger it
             // we only look at the closest scrollable parent, no nesting
@@ -999,9 +998,8 @@ const inject = {
                 if (target && target !== "self" && $(target).length === 0) {
                     return false;
                 }
-                const reltop =
-                        $el.safeOffset().top - $scrollable.safeOffset().top - 1000,
-                    doTrigger = reltop <= $scrollable.innerHeight();
+                const reltop = $el.safeOffset().top - $scrollable.safeOffset().top - 1000; // prettier-ignore
+                const doTrigger = reltop <= $scrollable.innerHeight();
                 if (doTrigger) {
                     // checkVisibility was possibly installed as a scroll
                     // handler and has now served its purpose -> remove