提交工程，小程序源码已完成，单片机待完成

wex_small/miniprogram_npm/@vant/weapp/wxs/utils.wxs

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+/* eslint-disable */
+var bem = require('./bem.wxs');
+var memoize = require('./memoize.wxs');
+var addUnit = require('./add-unit.wxs');
+
+module.exports = {
+  bem: memoize(bem),
+  memoize: memoize,
+  addUnit: addUnit
+};