[]微信小游戏怎么引入DOMParser？

MiniAdpter.parseXMLFromString=function(value){
var rst;
var Parser;
value=value.replace(/>\s+</g,'><');
try {
/*__JS__ */rst=(new window.Parser.DOMParser()).parseFromString(value,'text/xml');
}catch (error){
throw "需要引入xml解析库文件";
}
return rst;
}

window.Parser=require('./domparser.js');

1. 我下载的laya库文件中只有 domparserinone.js
2. 如果 window.Parser=require('./domparserinone.js')会导致报错WAGame.js:3 gameThirdScriptErrorSaxO is not definedReferenceError: SaxO is not defined    at http://127.0.0.1:60730/game/do ... 270:6    at require (http://127.0.0.1:60730/game/__ ... :13675)    at http://127.0.0.1:60730/game/__ ... 13424    at http://127.0.0.1:60730/game/game.js:7:17    at require (http://127.0.0.1:60730/game/__ ... :13675)    at http://127.0.0.1:60730/game/gamePage.html:132:80