Angular5升级RxJS到5.5.3报错：EmptyError: no elements in sequence的解决方法

前言

rxjs是一种针对异步数据流编程工具，或者叫响应式扩展编程；可不管如何解释rxjs其目标就是异步编程，angular引入rxjs为了就是让异步可控、更简单。可是最近在升级中遇到了一些问题，下面就来给大家介绍下，给同样遇到这个问题发朋友们一些参考，下面话不多说了，来一起看看详细的介绍吧。

angular 5.0.5升级rxjs到5.5.3报错：

error error: uncaught (in promise): emptyerror: no elements in sequence
emptyerror: no elements in sequence
 at new emptyerror (emptyerror.js:28)
 at firstsubscriber._complete (first.js:154)
 at firstsubscriber.subscriber.complete (subscriber.js:122)
 at mergemapsubscriber._complete (mergemap.js:150)
 at mergemapsubscriber.subscriber.complete (subscriber.js:122)
 at mapsubscriber.subscriber._complete (subscriber.js:140)
 at mapsubscriber.subscriber.complete (subscriber.js:122)
 at emptyobservable._subscribe (emptyobservable.js:83)
 at emptyobservable.observable._trysubscribe (observable.js:172)
 at emptyobservable.observable.subscribe (observable.js:160)
 at new emptyerror (emptyerror.js:28)
 at firstsubscriber._complete (first.js:154)
 at firstsubscriber.subscriber.complete (subscriber.js:122)
 at mergemapsubscriber._complete (mergemap.js:150)
 at mergemapsubscriber.subscriber.complete (subscriber.js:122)
 at mapsubscriber.subscriber._complete (subscriber.js:140)
 at mapsubscriber.subscriber.complete (subscriber.js:122)
 at emptyobservable._subscribe (emptyobservable.js:83)
 at emptyobservable.observable._trysubscribe (observable.js:172)
 at emptyobservable.observable.subscribe (observable.js:160)
 at resolvepromise (zone.js:824)

这应该是rxjs升级导致的，参考issue。

方法一

在所有的route里加上pathmath:"full"，如

const routes: routes = [
 { path: "", component: indexcomponent },
 { path: "home", component: homecomponent },
 { path: "about", component: aboutcomponent },
 ...
];

改为

const routes: routes = [
 { pathmatch: 'full', path: "", component: indexcomponent },
 { pathmatch: 'full', path: "home", component: homecomponent },
 { pathmatch: 'full', path: "about", component: aboutcomponent },
 ...
];

方法二

rxjs降为版本5.5.2。

注意：降版本时一定要把之前的卸载掉。

总结

以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对的支持。