angular – ng-bootstrap typeahead TypeError：Object(…)不是

ERROR TypeError: Object(...) is not a function
at new NgbTypeahead (typeahead.js:52)
at createClass (core.js:12449)
at createDirectiveInstance (core.js:12284)
at createViewNodes (core.js:13742)
at callViewAction (core.js:14176)
at execComponentViewsAction (core.js:14085)
at createViewNodes (core.js:13770)
at callViewAction (core.js:14176)
at execComponentViewsAction (core.js:14085)
at createViewNodes (core.js:13770)

并且：

ERROR TypeError: Cannot read property 'instance' of undefined
at nodeValue (core.js:11753)
at Object.eval [as handleEvent] (NgbdTypeaheadBasic.html:9)
at handleEvent (core.js:13547)
at callWithDebugContext (core.js:15056)
at Object.debugHandleEvent [as handleEvent] (core.js:14643)
at dispatchEvent (core.js:9962)
at eval (core.js:10587)
at HTMLDocument.eval (platform-browser.js:2628)
at ZoneDelegate.invokeTask (zone.js:421)
at Object.onInvokeTask (core.js:4740)

我从网站link复制了Simple Typeahead代码.

我的package.json文件：

{
??“名称”：“测试型提前”,
??“版本”：“0.0.0”,
??“执照”：“麻省理工学院”,
??“脚本”：{
????“ng”：“ng”,
????“开始”：“ng serve”,
????“build”：“ng build –prod”,
????“测试”：“ng测试”,
????“lint”：“ng lint”,
????“e2e”：“ng e2e”
??},
??“私人”：是的,
??“依赖”：{
????“@ angular / animations”：“^ 5.2.0”,
????“@ angular / common”：“^ 5.2.0”,
????“@ angular / compiler”：“^ 5.2.0”,
????“@ angular / core”：“^ 5.2.0”,
????“@ angular / forms”：“^ 5.2.0”,
????“@ angular / http”：“^ 5.2.0”,
????“@ angular / platform-b??rowser”：“^ 5.2.0”,
????“@ angular / platform-b??rowser-dynamic”：“^ 5.2.0”,
????“@ angular / router”：“^ 5.2.0”,
????“@ ng-bootstrap / ng-bootstrap”：“^ 2.0.0-alpha.0”,
????“bootstrap”：“^ 4.1.0”,
????“core-js”：“^ 2.4.1”,
????“rxjs”：“^ 5.5.6”,
????“zone.js”：“^ 0.8.19”
??},
??“devDependencies”：{
????“@ angular / cli”：“~1.7.3”,
????“@ angular / compiler-cli”：“^ 5.2.0”,
????“@ angular / language-service”：“^ 5.2.0”,
????“@ types / jasmine”：“~2.8.3”,
????“@ types / jasminewd2”：“~2.0.2”,
????“@ types / node”：“~6.0.60”,
????“codelyzer”：“^ 4.0.1”,
????“茉莉核心”：“~2.8.0”,
????“jasmine-spec-reporter”：“~4.2.1”,
????“业力”：“~2.0.0”,
????“karma-chrome-launcher”：“~2.2.0”,
????“karma-coverage-istanbul-reporter”：“^ 1.2.1”,
????“karma-jasmine”：“~1.1.0”,
????“karma-jasmine-html-reporter”：“^ 0.2.2”,
????“量角器”：“~5.1.2”,
????“ts-node”：“~4.1.0”,
????“tslint”：“~5.9.1”,
????“打字稿”：“~2.5.3”
??}
}

到目前为止我尝试了什么：

>用npm重新安装node_modules – 没有帮助
>使用角度CLI开始了一个全新的项目并在那里试用了代码 – 没有帮助.

任何帮助是极大的赞赏！