“类型'EventEmitter'不是通用的"角度错误 [英] "Type 'EventEmitter' is not generic" ERROR in angular

问题描述

我当前正在学习一个教程，并且该教程正在使用EventEmitter.代码是这样的

I'm currently following a tutorial and the tutorial is making use of EventEmitter. The code goes like this

@Output() ratingClicked: EventEmitter<string> =
        new EventEmitter<string>();

但是Visual Studio代码却给了我这些错误:

But it visual studio code gives me these errors:

1. 类型'EventEmitter'不是通用的.
2. 期望0个类型参数，但得到1个.

即使在角度网站中，该代码也是正确的.

Even in the angular website it looks like that code is correct.

我当前正在使用Angular CLI:1.7.4;节点:8.11.1;打字稿:2.8.1

I'm currently using Angular CLI: 1.7.4; Node: 8.11.1; Typescript: 2.8.1

推荐答案

您可能正在使用node/index.d.ts中的node本机EventEmitter，即

You are probably using the node native EventEmitter from node/index.d.ts i.e.

import { EventEmitter } from 'events';

修复

将导入更改为角度导入:

Fix

Change the import to the one from angular:

import { EventEmitter } from '@angular/core';

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