Fix the sorting bug

Author: Kenneth Cheng

package-lock.json

@@ -2,7 +2,7 @@
   "name": "vue3-excel-editor",
   "email": "apple.6502@gmail.com",
   "description": "Vue3 plugin for displaying and editing the array-of-object in Excel style",
-  "version": "1.0.45",
+  "version": "1.0.46",
   "main": "src/main.js",
   "dependencies": {
     "@vuepic/vue-datepicker": "^3.3.0",

package.json

@@ -36,6 +36,7 @@ export default {
     options: {type: [Array, Object, Function], default () {return null}},
     summary: {type: String, default: null},
     sort: {type: Function, default: null},
+    sorting: {type: Function, default: null},
     masking: {type: String, default: '•'},
     placeholder: {type: String, default: ''},
     color: {type: [String, Function], default: null},
@@ -252,6 +253,7 @@ export default {
         link: this.link,
         isLink: this.isLink || (this.link ? () => true : null),
         sort: this.sort,
+        sorting: this.sorting,
 
         keyField: this.keyField,
         sticky: this.sticky,

src/VueExcelColumn.vue

@@ -1724,7 +1724,7 @@ export default defineComponent({
       const name = field.name
       setTimeout(() => {
         let sorting = field.sorting
-        if (sorting === null) {
+        if (!sorting) {
           if (field.type === 'number')
             sorting = (a, b) => {
               if (Number(a) > Number(b)) return 1