npm 下载 依赖包时出错的解决方式

npm 下载 依赖包时出错的解决方式
一.设置 npm 镜像源
设置为国内镜像源

npm config set registry http://registry.npm.taobao.org

1
查看当前镜像源

 npm config get registry

1
恢复原来镜像源

npm config set registry http://registry.npmjs.org

二.设置 .npmrc 文件
虽然已设置国内镜像源, 有时候 A 包中需要下载 B 包, 这时还可能到国外站点下载 B 包

.npmrc 文件可以提供「变量」设置某些包的下载地址也为国内镜像.

文件位置一般为 C:/Users/Administrator(当前用户名)/.npmrc

把下面常见包地址复制到 .npmrc 中，从而提高下载成功率

  sharp_binary_host = https://npm.taobao.org/mirrors/sharp
  sharp_libvips_binary_host = https://npm.taobao.org/mirrors/sharp-libvips
  profiler_binary_host_mirror = https://npm.taobao.org/mirrors/node-inspector/
  fse_binary_host_mirror = https://npm.taobao.org/mirrors/fsevents
  node_sqlite3_binary_host_mirror = https://npm.taobao.org/mirrors
  sqlite3_binary_host_mirror = https://npm.taobao.org/mirrors
  sqlite3_binary_site = https://npm.taobao.org/mirrors/sqlite3
  sass_binary_site = https://npm.taobao.org/mirrors/node-sass
  electron_mirror = https://npm.taobao.org/mirrors/electron/
  puppeteer_download_host = https://npm.taobao.org/mirrors
  chromedriver_cdnurl = https://npm.taobao.org/mirrors/chromedriver
  operadriver_cdnurl = https://npm.taobao.org/mirrors/operadriver
  phantomjs_cdnurl = https://npm.taobao.org/mirrors/phantomjs
  python_mirror = https://npm.taobao.org/mirrors/python
  registry = https://registry.npm.taobao.org/
  disturl = https://npm.taobao.org/dist

三.设置 hosts 文件
有些包在国内镜像中没有及时更新, 或者根本没有.

国外站点下载不通畅多是因为在「域名 => IP」阶段受阻

我们的解决方案就是提前把「域名与IP的对应关系」准备好，放在本在 hosts 文件中

编辑 C:\Windows\System32\drivers\etc\hosts 文件

 52.74.223.119 github.com

  199.232.28.133  raw.githubusercontent.com
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  54.169.195.247 api.github.com
  140.82.112.25 live.github.com
  59.24.3.173 gist.github.com

  185.199.108.154 github.githubassets.com
  # 185.199.109.154 github.githubassets.com
  # 185.199.110.154 github.githubassets.com
  # 185.199.111.154 github.githubassets.com

  34.196.246.152 collector.githubapp.com
  # 52.206.227.240 collector.githubapp.com
  52.216.207.115 github-cloud.s3.amazonaws.com

  140.82.112.21 central.github.com

  151.101.108.133 raw.githubusercontent.com
  151.101.108.133 user-images.githubusercontent.com
  151.101.108.133 desktop.githubusercontent.com
  151.101.76.133  raw.githubusercontent.com
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