1、在内建终端中打开

Windows PowerShell
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尝试新的跨平台 PowerShell https://aka.ms/pscore6

PS C:\Users\dgq\WeChatProjects\miniprogram-1>

2、npm init -y

PS C:\Users\dgq\WeChatProjects\miniprogram-1> npm init -y
Wrote to C:\Users\dgq\WeChatProjects\miniprogram-1\package.json:

{
  "name": "miniprogram-1",
  "version": "1.0.0",
  "description": "",
  "main": ".eslintrc.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

3、Vant Weapp

Vant Weapp：https://vant-ui.github.io/vant-weapp/#/home

4、通过 npm 安装

PS C:\Users\dgq\WeChatProjects\miniprogram-1> npm i @vant/weapp

added 1 package in 3s

5、构建 npm