ng 服务不起作用 [英] ng serve does not work

问题描述

我以前有 angular cli，但我错误地重新安装了

I used to have angular cli, but i mistakenly installed it again with

npm install -g angular-cli

现在当我运行 ng serve 它抱怨:

and now when i run ng serve it complains:

It seems like you're using a project generated using an old version of the Angular CLI.
The latest CLI now uses webpack and includes a lot of improvements, include a simpler
workflow, a faster build and smaller bundles.

To get more info, including a step-by-step guide to upgrade the CLI, follow this link:
https://github.com/angular/angular-cli/wiki/Upgrading-from-Beta.10-to-Beta.12

当我尝试在另一个目录中使用 ng new 创建一个新项目时，它抱怨:

when i try to create a new project using ng new in another directory it complains that:

Cannot find module 'reflect-metadata'

那么问题出在哪里?

推荐答案

关键是让 global 和 local Angular-cli 版本相同.

The key is to have both global and local Angular-cli versions the same.

假设我们想将它固定到例如.1.0.0-beta.15.

Let's say we want to fixate it to eg. 1.0.0-beta.15.

所以你可以尝试在 npm install -g angular-cli@1.0.0-beta.15 和你的 package.json 中固定版本相同版本:"angular-cli": "1.0.0-beta.15".然后运行 ​​npm install --save-dev.

So you can try to fixate the version in npm install -g angular-cli@1.0.0-beta.15 and in your package.json fixate it to the same version: "angular-cli": "1.0.0-beta.15". Then run npm install --save-dev.

目前 Angular CLI 可以在 NPM 上的 @angular/cli 下找到，而不是 angular-cli.以下是如何卸载旧版本的文档链接 和 安装最新的 CLI 版本.

Currently Angular CLI can be found on NPM under @angular/cli instead of angular-cli. Here are links to documentation how to uninstall old and install the latest version of CLI.

这篇关于ng 服务不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！