Angular 4：导入javascript模块会产生多个错误

Question

我有一个我希望在Angular 4中使用的javascript模块（即IIFE文件） 我这样做了：

declare var DataRequestsToHost: any;

import * as DataRequestsToHost from '../../../../hostScripts/DataRequestsToHost';

但import语句错误：

Build:Module '../../../../hostScripts/DataRequestsToHost' was resolved to 'hostScripts/DataRequestsToHost.js', but '--allowJs' is not set.

所以我将allowJs = true添加到tsconfig.json

然后在Visual Studio中我得到2个错误：

Build:Cannot write file 'D:/VS2017Projects/ThirdPartyExam1/ThirdPartyExam1/systemjs.config.js'
because it would overwrite input file.

Build:Cannot write file 'D:/VS2017Projects/ThirdPartyExam1/ThirdPartyExam1/hostScripts/DataRequestsToHost.js'
because it would overwrite input file.

“hostsscripts”和“systemjs.config”都在tsconfig.json的exclude部分

如何解决这个问题？

问候

GregJF