未捕获的ReferenceError：在打字稿中未定义SystemJS

Question

 <script>
   SystemJS.config({
     baseURL:"/", //Can write the path like /script and the browser will look inside the script folder
     packages:{
       ".": {
         defaultExtension:'js'
       }
     }
  })
  SystemJS.import("script.js")
</script>