Does nodejs rely on repetition?

there is a question about nodejs that has been puzzled all the time. Suppose there are three files, a, bc,b and c, then is c introduced twice? Will it affect performance? This seems to be very common in the project. I hope God will solve the problem. Thank you very much

Apr.05,2021

cache, will not be loaded repeatedly.

see https://nodejs.org/api/module.

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-64f5-1b443fb-4dd96.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b443fb-4dd96.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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