ionic4 建立项目失败 If you are behind a firewall and need to configure proxy settings

If you are behind a firewall and need to configure proxy settings, see: https://ion.link/cli-proxy-docsnpm ionic4 建立项目报错时,不须要设置代理ionic 若是设置了代理3d npm config set proxy=https://registry.npm.taobao.org代理

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