尝试整合Angular 4 + @ ngx-translate 。 一切正在执行和npm start正常工作。 当我尝试npm test运行Karmatesting用例时出现问题。 所有这些都是在添加@ ngx-translatefunction之后开始的。 控制台得到以下错误：
20 09 2017 14:24:30.334:INFO [Chrome 60.0.3112 (Windows 7 0.0.0)]: Connected on socket n1uvSjMzMfCGU26zAAAA with id 7587189 Chrome 60.0.3112 (Windows 7 0.0.0) ERROR Uncaught TypeError: Cannot read property 'Injectable' of undefined at node_modules/@ngx-translate/core/bundles/core.umd.js:817
在浏览器控制台：
Uncaught TypeError: Cannot read property 'Injectable' of undefined at Object.<anonymous> (core.umd.js:817) at __webpack_require__ (core.umd.js:30) at Object.module.exports (core.umd.js:1421) at __webpack_require__ (core.umd.js:30) at module.exports (core.umd.js:76) at core.umd.js:79 at webpackUniversalModuleDefinition (core.umd.js:9) at core.umd.js:10 ng-bootstrap.js:9 Uncaught TypeError: Cannot read property 'core' of undefined at webpackUniversalModuleDefinition (ng-bootstrap.js:9) at ng-bootstrap.js:10
在浏览器上：
OtherComponent when inside a test host should process Instance name TypeError: Cannot read property 'bpmWrapWorkItemList' of undefined TypeError: Cannot read property 'bpmWrapWorkItemList' of undefined
请帮忙 ！！！ 我是Angular 4的新手