如何在wxml中直接写js代码(wxs)

<wxs module="dateModule">
 var now = getDate();
 module.exports = {
  date: now
 }
</wxs>
<view>当前时间：{{dateModule.date}}</view>

// pages/dateTool.wxs
var now = getDate();
var format = function(lastDate) {
 var date = getDate(lastDate);
 return date.toLocaleString();
}
module.exports = {
 date: now,
 format: format
}

<!-- page/index/index.wxml -->
<wxs src="../dateTool.wxs" module="dateTool"></wxs>
<view>{{dateTool.date}}</view>

// /pages/tools.wxs
var foo = "'hello world' from tools.wxs";
var bar = function (d) {
 return d;
}
module.exports = {
 FOO: foo,
 bar: bar,
};
module.exports.msg = "some msg";

// /pages/logic.wxs
var tools = require("./tools.wxs");
console.log(tools.FOO);
console.log(tools.bar("logic.wxs"));
console.log(tools.msg);

<!-- /page/index/index.wxml -->
<wxs src="./../logic.wxs" module="logic" />

module.exports = { Key1:value1, key2: value2, };