fix(uploader): 修复小程序端传图后报错问题 (#836)

* fix(uploader): Upload quantity limit

* fix(uploader): 修复小程序端传图后报错问题
Co-authored-by: N无始 <wushi@yinge.tech>

src/packages/__VUE/uploader/index.taro.vue

@@ -23,7 +23,7 @@
         <img
           class="nut-uploader__preview-img__c"
           @click="fileItemClick(item)"
-          v-if="item.type.includes('image') && item.url"
+          v-if="item.type?.includes('image') && item.url"
           :src="item.url"
         />
         <view v-else class="nut-uploader__preview-img__file">
@@ -233,12 +233,17 @@ export default create({
     };
 
     const readFile = (files: Taro.chooseImage.ImageFile[]) => {
+      const imgReg = /\.(png|jpeg|jpg|webp|gif)$/gi;
       files.forEach((file: Taro.chooseImage.ImageFile, index: number) => {
+        let fileType = file.type;
         const fileItem = reactive(new FileItem());
+        if (!fileType && imgReg.test(file.path)) {
+          fileType = 'image';
+        }
         fileItem.path = file.path;
         fileItem.name = file.path;
         fileItem.status = 'ready';
-        fileItem.type = file.type;
+        fileItem.type = fileType;
         if (props.isPreview) {
           fileItem.url = file.path;
         }