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I was able to generate the code and type the label checker, but the post office asks for a unique pattern for printing and I don’t know if Sigep-web already provides this in its API or not.
https://github.com/stavarengo/php-sigep
There is the link above which is a library where I can print the label according to the requirements of the post office, but it is in PHP, does anyone know anything of the type facing Nodejs? need to be generating PDF for label printing and believe that putting together this layout is not the best way.
I accept constructive suggestions clear, because if I find nothing facing nodejs I will have to develop.