Why are the file names of dependent packages in node_modules underlined?

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this issue does not affect the running of the project. From a clone project on github, install the dependency package with npm I and check back that all dependency package file names have an underscore, but not with the command (in this case, the angular,ng new command).
what is the reason for this? -sharp-sharp-sharp problem description

Jul.18,2021

because you installed it with cnpm

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-64f5-1be413b-30a28.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1be413b-30a28.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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