Update for module support

module/system/helpers.js

@@ -10,7 +10,7 @@ export const registerHandlebarsHelpers = function () {
 
   Handlebars.registerHelper('isEmpty', function (list) {
     if (list) return list.length == 0;
-    else return 0;
+    else return false;
   });
 
   Handlebars.registerHelper('notEmpty', function (list) {
@@ -64,8 +64,8 @@ export const registerHandlebarsHelpers = function () {
   })
 
   Handlebars.registerHelper('for', function (from, to, incr, block) {
-    var accum = '';
-    for (var i = from; i < to; i += incr)
+    let accum = '';
+    for (let i = from; i < to; i += incr)
       accum += block.fn(i);
     return accum;
   })
@@ -89,8 +89,8 @@ export const registerHandlebarsHelpers = function () {
 
   // If you need to add Handlebars helpers, here are a few useful examples:
   Handlebars.registerHelper('concat', function () {
-    var outStr = '';
-    for (var arg in arguments) {
+    let outStr = '';
+    for (let arg in arguments) {
       if (typeof arguments[arg] != 'object') {
         outStr += arguments[arg];
       }
@@ -117,7 +117,6 @@ export const registerHandlebarsHelpers = function () {
     return arr[idx];
   })
   Handlebars.registerHelper('includesKey', function (items, type, key) {
-    // console.log(items);
     return items.filter(i => i.type === type).map(i => i.system.key).includes(key);
   })
   Handlebars.registerHelper('includes', function (array, val) {
@@ -128,10 +127,7 @@ export const registerHandlebarsHelpers = function () {
   })
   Handlebars.registerHelper('isOwnerOrGM', function (actor) {
     console.log("Testing actor", actor.isOwner, game.userId)
-    if (actor.isOwner || game.isGM) {
-      return true
-    }
-    return false
+    return actor.isOwner || game.isGM;
   })
   Handlebars.registerHelper('upperFirst', function (text) {
     if (typeof text !== 'string') return text