Release v2.3.2

Author: tangbc

dist/index.js

@@ -1,5 +1,5 @@
 /*!
- * vue-virtual-scroll-list v2.3.1
+ * vue-virtual-scroll-list v2.3.2
  * open source under the MIT license
  * https://github.com/tangbc/vue-virtual-scroll-list#readme
  */
@@ -34,6 +34,39 @@
     return Constructor;
   }
 
+  function _toConsumableArray(arr) {
+    return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread();
+  }
+
+  function _arrayWithoutHoles(arr) {
+    if (Array.isArray(arr)) return _arrayLikeToArray(arr);
+  }
+
+  function _iterableToArray(iter) {
+    if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter);
+  }
+
+  function _unsupportedIterableToArray(o, minLen) {
+    if (!o) return;
+    if (typeof o === "string") return _arrayLikeToArray(o, minLen);
+    var n = Object.prototype.toString.call(o).slice(8, -1);
+    if (n === "Object" && o.constructor) n = o.constructor.name;
+    if (n === "Map" || n === "Set") return Array.from(n);
+    if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen);
+  }
+
+  function _arrayLikeToArray(arr, len) {
+    if (len == null || len > arr.length) len = arr.length;
+
+    for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i];
+
+    return arr2;
+  }
+
+  function _nonIterableSpread() {
+    throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method.");
+  }
+
   /**
    * virtual list core calculating center
    */
@@ -153,7 +186,9 @@
 
         if (this.calcType !== CALC_TYPE.FIXED && typeof this.firstRangeTotalSize !== 'undefined') {
           if (this.sizes.size < Math.min(this.param.keeps, this.param.uniqueIds.length)) {
-            this.firstRangeTotalSize = this.firstRangeTotalSize + size;
+            this.firstRangeTotalSize = _toConsumableArray(this.sizes.values()).reduce(function (acc, val) {
+              return acc + val;
+            }, 0);
             this.firstRangeAverageSize = Math.round(this.firstRangeTotalSize / this.sizes.size);
           } else {
             // it's done using
@@ -190,6 +225,10 @@
         this.direction = offset < this.offset ? DIRECTION_TYPE.FRONT : DIRECTION_TYPE.BEHIND;
         this.offset = offset;
 
+        if (!this.param) {
+          return;
+        }
+
         if (this.direction === DIRECTION_TYPE.FRONT) {
           this.handleFront();
         } else if (this.direction === DIRECTION_TYPE.BEHIND) {
@@ -202,7 +241,7 @@
       value: function handleFront() {
         var overs = this.getScrollOvers(); // should not change range if start doesn't exceed overs
 
-        if (overs > this.range.start || !this.param) {
+        if (overs > this.range.start) {
           return;
         } // move up start by a buffer length, and make sure its safety
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-virtual-scroll-list",
-  "version": "2.3.1",
+  "version": "2.3.2",
   "description": "A vue component support big amount data list with high scroll performance.",
   "main": "dist/index.js",
   "files": [