我的解決辦法是文章末尾的brew update && brew upgrade一行命令解決的，前邊的可以跳過不看。
要解決的問題：
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執(zhí)行brew upgrade npm
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沒用！
繼續(xù)......
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brew update
沒用！
繼續(xù).......
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brew info icu4c
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然后
cd /usr/local/Cellar/icu4c/66.1/libcp ./libicui18n.66.dylib /usr/local/opt/icu4c/lib/提示
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附注Linux
cp命令
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沒用！
繼續(xù)......
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brew reinstall yarn
有報錯
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /usr/local
Could not symlink share/doc/node/gdbinit
Target /usr/local/share/doc/node/gdbinit
is a symlink belonging to node@12. You can unlink it:
brew unlink node@12
如圖
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然后1、
rm -rf /usr/local/lib/node_modules/npm，再2、brew link node在第二步報錯
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然后我執(zhí)行了
brew unlink node@12重新嘗試
brew link node，輸出了Linking /usr/local/Cellar/node/14.3.0... 204 symlinks created但，還是沒有解決掉我的問題！
繼續(xù)......
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brew update && brew upgrade??
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慶祝??????????
踏破鐵鞋無覓處，驀然回首，那人卻在燈火闌珊處
兜兜轉(zhuǎn)轉(zhuǎn)，這一行命令就解決了問題??
