What are the eight life cycle hook functions of Vue>>> 
some solutions to the problem of “webpack/lib/node/nodetemplug” of cannot find module in angular development
Reference article:
(1) Some solutions to the problem of “web pack/lib/node/nodetemplugin” in the development of angular
（2） https://www.cnblogs.com/shiyinan/p/7520913.html
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