解決 nvm is not compatible with the npm config “prefix” option: currently set to “/usr/local” 問題

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https://medium.com/@mvpdw06/%E8%A7%A3%E6%B1%BA-nvm-is-not-compatible-with-the-npm-config-prefix-option-currently-set-to-usr-local-%E5%95%8F%E9%A1%8C-cb1f3462ef40