yarn 安装 node 包提示“ There appears to be trouble with your network connection. Retrying...”

参考网址：https://stackoverflow.com/questions/51508364/yarn-there-appears-to-be-trouble-with-your-network-connection-retrying

如果使用的是国内源，那么有可能是因为包体积太大导致网络超时所致。

对应的解决方法为，指定网络超时时间

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1	yarn install --network-timeout=30000