This is a package that helps you to work with fs built in package
it helps you to : READ WRITE RENAME DELETE APPEND
to use it first download it and go in your file:
require it
Use it a. read it has a read function all you provide in the parameters in the direction of the file you want to read
b.append it has an append function you provide in the parameters the path of the file and the content you want to append
c.delete provide in the parameters the path of the file
d.write provide in the parameters the path and the content you want to write
e.rename you provide in the parameters the path of the old and the path of the new