错误：无法解析“child_process”Angular-cli

Question

我使用 angular-cli 生成了一个新应用程序并添加了一些组件。我没有添加任何测试用例。当我尝试运行/构建应用程序时，我收到以下冗长的错误消息：

ERROR in ./node_modules/selenium-webdriver/firefox/binary.js
Module not found: Error: Can't resolve 'child_process' in '/home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/firefox'
resolve 'child_process' in '/home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/firefox'
  Parsed request is a module
  using description file: /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/package.json (relative path: ./firefox)
    Field 'browser' doesn't contain a valid alias configuration
  after using description file: /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/package.json (relative path: ./firefox)
    resolve as module
      /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/firefox/node_modules doesn't exist or is not a directory
      /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/node_modules doesn't exist or is not a directory
      /home/myName/PROJECTS/MEAN/fruit-stall/node_modules doesn't exist or is not a directory
      /home/myName/PROJECTS/MEAN/node_modules doesn't exist or is not a directory
      /home/myName/PROJECTS/node_modules doesn't exist or is not a directory
      /home/myName/node_modules doesn't exist or is not a directory
      /home/node_modules doesn't exist or is not a directory
      /node_modules doesn't exist or is not a directory
      looking for modules in /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/node_modules
        using description file: /home/myName/PROJECTS/MEAN/fruit-stall/fruitStall/node_modules/selenium-webdriver/package.json (relative path: ./node_modules)

请找到详细转储here。

操作系统：Ubuntu 16.04 LTS 角度版本是：5.0.2 节点：9.2.0

我还发现here 有人问过类似的问题，但它与测试用例有关。由于我没有编写任何测试用例，这对我没有帮助。

Answer 1

找到罪魁祸首！

我正在向组件之一添加一些事件，并且 Visual Studio 代码从 selenium 而不是 angular-core 导入事件发射器。

删除了

import { EventEmitter } from 'selenium-webdriver';

并更新了这个：

import { Component, OnInit, Input, EventEmitter } from '@angular/core';

Answer 2

好吧，由于您刚刚发布了错误，因此我没有太多上下文，但这可能类似于Webpack and TypeScript: Cannot resolve module 'child_process' in node.d.ts。

将"target": "node" 添加到您的 webpack 配置可以解决问题。