https://blog.toshimaru.net/goroutine-with-waitgroup/
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https://blog.uhy.ooo/entry/2021-04-09/typescript-is-any-as/
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https://speakerdeck.com/lmi/arr20yi-yuan-wo3nian-deda-cheng-sitaenziniazu-zhi-gashi-xian-sitadeveloper-experience-3tufalseluo-tosixue-tocheng-riyue-efang-ver2
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https://qiita.com/xrxoxcxox/items/91f84c6bc3e03deb5853
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