Environment variable setting of npm global installation package on mac

I download and install nvm directly on the official website, not through homebrew
then I want to set up a global package

in node under nvm. 
npm config set prefix ~/.nvm/npm-global

I installed cnpm, globally first. I found the execution file in

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.bash_profile.bashrc

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$PATHecho $PATH

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bin:

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echo $PATH
/Users/lyw/.nvm/versions/node/v8.11.1/bin:/Users/lyw/.nvm/npm-global/adada:/Users/lyw/.nvm/npm-global/adada:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

so I don"t know what the problem is.
ask God for help.

Node.js ios
Mar.09,2021

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1eaf507-2244.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eaf507-2244.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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