提交工程，小程序源码已完成，单片机待完成

wex_small/miniprogram_npm/@vant/weapp/share-sheet/index.wxs

@@ -0,0 +1,12 @@
+/* eslint-disable */
+function isMulti(options) {
+  if (options == null || options[0] == null) {
+    return false;
+  }
+
+  return "Array" === options.constructor && "Array" === options[0].constructor;
+}
+
+module.exports = {
+  isMulti: isMulti
+};