fix: after update parser/render

Author: Scrum

lib/index.js

@@ -1,8 +1,8 @@
 'use strict'
 
 const vm = require('vm')
-const parser = require('posthtml-parser')
-const render = require('posthtml-render')
+const { parser } = require('posthtml-parser')
+const { render } = require('posthtml-render')
 
 const getNextTag = require('./tags')
 const parseLoopStatement = require('./loops')