一、问题背景

第一次用ng new my-app 创建空白项目成功后 删除项目想再重新创建一次熟悉一下 然后报错了 如下：

Installing packages (npm)...npm error code ERESOLVE

npm error ERESOLVE unable to resolve dependency tree

npm error

npm error While resolving: my-app@0.0.0

npm error Found: @angular/common@18.1.1

npm error node_modules/@angular/common

npm error   @angular/common@"^18.1.0" from the root project

npm error

npm error Could not resolve dependency:

npm error peer @angular/common@"18.1.2" from @angular/router@18.1.2

npm error node_modules/@angular/router

npm error   @angular/router@"^18.1.0" from the root project

npm error

npm error Fix the upstream dependency conflict, or retry

npm error this command with --force or --legacy-peer-deps

npm error to accept an incorrect (and potentially broken) dependency resolution.

npm error

npm error

npm error For a full report see:

npm error C:\Users\yunzhong\AppData\Local\npm-cache\_logs\2024-07-25T02_41_19_022Z-eresolve-report.txt

npm error A complete log of this run can be found in: C:\Users\yunzhong\AppData\Local\npm-cache\_logs\2024-07-25T02_41_19_022Z-debug-0.log

✖ Package install failed, see above.

The Schematic workflow failed. See above.

二、出现原因

查了一下说是npm版本过高导致的

           三、解决方法

错误尝试：

（1）在命令后面加上--legacy-peer-deps

（2）运行npx -p npm@6 npm i --legacy-peer-deps

成功解决：安装低版本的npm 重新运行

npm install npm@6.14.12 -g