npm 报错: npm ERR! code ERESOLVE ， npm ERR! code E404

npm 报错:

PS D:\Software\HBuilderX\Workspace\vant\vant-demo\vant\vue2> npm install
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR!
npm ERR! While resolving: vant-demo-vue2@1.0.0
npm ERR! Found: eslint@4.19.1
npm ERR! node_modules/eslint
npm ERR!
npm ERR! Could not resolve dependency:
npm ERR! peer eslint@"^5.0.0 || ^6.0.0" from eslint-plugin-vue@6.2.2
npm ERR! node_modules/eslint-plugin-vue
npm ERR! dev eslint-plugin-vue@"^6.0.1" from the root project
npm ERR!
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR!
npm ERR! See C:\Users\Administrator\AppData\Local\npm-cache\eresolve-report.txt for a full report.

查看当前npm 版本

npm -v

7.x版本的vpm 要正常在vscode上使用的指令：

npm i --legacy-peer-deps

现在就可以使用了