How to use superagent to save the picture to the server disk through the picture address, and then return the picture address to the browser?

how should I write such a question?
use the node package superagent, to save the picture to the local disk. Then return the address to the front end.

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-64f5-1be1a80-541f4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be1a80-541f4.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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