Yarn installation of jquery doubts?

I just want to install jquery, with yarn. Why do I install so many other things?

Feb.27,2021
The

package may have dependencies, and jquery relies on several other packages for construction or other purposes.

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-64f5-1e82a1a-5ba0b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e82a1a-5ba0b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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