feat(uploader): add extension property support

packages/uploader/README.md

@@ -244,6 +244,7 @@ uploadFilePromise(fileName, chooseResult) {
 | compressed | 当 accept 为 `video` 时生效，是否压缩视频，默认为`true` | _boolean_ | - |
 | max-duration | 当 accept 为 `video` \| `media` 时生效，拍摄视频最长拍摄时间，单位秒 | _number_ | `60` |
 | media-type `v1.10.8` | 当 accept 为 `media` 时生效，选择的文件的文件类型，可选值为 `image` `video` | _string[]_ | `['image', 'video']` |
+| extension `v1.10.11` | 当 accept 为 `file` 时生效，根据文件拓展名过滤可选择文件。每一项都不能是空字符串。默认不过滤 | _string[] | undefined_ | - |
 | upload-icon | 上传区域图标，可选值见 [Icon 组件](#/icon) | _string_ | `plus` |
 
 #### accept 的合法值

packages/uploader/index.ts

@@ -1,6 +1,11 @@
 import { VantComponent } from '../common/component';
 import { isImageFile, chooseFile, isVideoFile, File } from './utils';
-import { chooseImageProps, chooseVideoProps, chooseMediaProps } from './shared';
+import {
+  chooseImageProps,
+  chooseVideoProps,
+  chooseMediaProps,
+  chooseMessageFileProps,
+} from './shared';
 import { isBoolean, isPromise } from '../common/validator';
 
 VantComponent({
@@ -63,6 +68,7 @@ VantComponent({
     ...chooseImageProps,
     ...chooseVideoProps,
     ...chooseMediaProps,
+    ...chooseMessageFileProps,
   },
 
   data: {

packages/uploader/shared.ts

@@ -49,3 +49,8 @@ export const chooseMediaProps = {
     value: 'back',
   },
 };
+
+// props for choose file
+export const chooseMessageFileProps = {
+  extension: null,
+};

packages/uploader/utils.ts

@@ -96,6 +96,7 @@ export function chooseFile({
   camera,
   maxCount,
   mediaType,
+  extension,
 }) {
   return new Promise<File | File[]>((resolve, reject) => {
     switch (accept) {
@@ -134,6 +135,7 @@ export function chooseFile({
         wx.chooseMessageFile({
           count: multiple ? maxCount : 1,
           type: accept,
+          ...(extension ? { extension } : {}),
           success: (res) => resolve(formatFile(res)),
           fail: reject,
         });