每次拉新项目安装依赖的时候，总是会报各种各样的错误
npm install
一开始还以为是哪个文件有问题，后来明白了，一切都是因为网络。。。。
npm 默认连接的服务器是国外的，网络很不稳定。。。。所以极其容易出错
后来每次换电脑，我都会直接将npm连接的服务器设置为淘宝源（淘宝架设的与npm官方同步数据的服务器）国内访问丝滑流畅
npm config set registry https://registry.npm.taobao.org
可是后来还是遇到了问题
仔细看报错信息，是node-sass下载失败了。
我以为是node-sass版本问题，后来以为是node的版本问题（node太新的话，不兼容老版本node-sass）
但我还是栽了。。。。。，它依然还是网络问题！！！
仔细看下面安装Node-sass时的报错信息
Downloading binary from https://github.com/sass/node-sass/releases/download/v4.11.0/win32-x64-72_binding.node
Cannot download "https://github.com/sass/node-sass/releases/download/v4.11.0/win32-x64-72_binding.node":
HTTP error 404 Not Found
Hint: If github.com is not accessible in your location
try setting a proxy via HTTP_PROXY, e.g.
export HTTP_PROXY=http://example.com:1234
or configure npm proxy via
npm config set proxy http://example.com:8080
发现没有
Cannot download "https://github.com/sass/node-sass/releases/download/v4.11.0/win32-x64-72_binding.node":
无法下载，地址是什么？ https://github.com/
回忆一下，我们平时上gayhub时的卡顿酸爽？
是的，node-sass在安装过程中，有一步是下载win32-x64-72_binding.node这个文件，而它请求的是github地址，所以我们现在要把这个地址也替换成淘宝源
npm install -g mirror-config-china --registry=http://registry.npm.taobao.org
设置好以后，我们进行
npm install
大功告成！(看Downloading的地址是不是变成了taobao.org)
Downloading binary from https://npm.taobao.org/mirrors/node-sass/v4.13.1/win32-x64-72_binding.node
Download complete ] - :
Binary saved to E:\project\nj-mc-poc-pc\node_modules\node-sass\vendor\win32-x64-72\binding.node
Caching binary to C:\Users\Administrator\AppData\Roaming\npm-cache\node-sass\4.13.1\win32-x64-72_binding.node
> node-sass@4.13.1 postinstall E:\project\nj-mc-poc-pc\node_modules\node-sass
> node scripts/build.js
Binary found at E:\project\nj-mc-poc-pc\node_modules\node-sass\vendor\win32-x64-72\binding.node
Testing binary
Binary is fine
npm WARN script-ext-html-webpack-plugin@2.0.1 requires a peer of html-webpack-plugin@^3.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN vue-g2@1.2.4 requires a peer of @antv/data-set@^0.9.6 but none is installed. You must install peer dependencies yourself.
npm WARN vue-admin-template@3.8.0 No repository field.
+ node-sass@4.13.1
added 84 packages from 92 contributors in 23.394s
28 packages are looking for funding
run `npm fund` for details
综合起来就是
npm config set registry https://registry.npm.taobao.org
npm install -g mirror-config-china --registry=http://registry.npm.taobao.org
npm install
不是我针对谁，在座的报错，都是垃圾！！！
