Protected: ngrok
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解决 Block-scoped declarations (let, const, function, class) not yet supported outside strict mode at
https://github.com/askmike/gekko/issues/1604 由于nodejs版本过低导致的，更新nodejs版本就行。 sudo ln -sf /usr/local/n/versions/node/7.5/bin/node /usr/bin/node sudo apt-get updatecurl -sL https://deb.nodesource.com/setup_9.x | sudo -E bash –sudo apt-get install -y nodejs