Haven’t too much experience with

fileName1.js
fileName1.es5.js
fileName1.es5.min.js 

so please bear with

I need to make changes to a number of js files on our mvc project.

So each JS file has the 3 files (above).

When I make a change to the orignial, do I need to also change this in the other 2?

Also, ive just been brought onto this project, but in the .cshtml file where the js file is being referenced, sometimes it will reference the fileName.js and other times it will ref the fileName.es5.min.js

Was this a mistake on the developers side, im assuming every ref should have been to the fileName.es5.min.js file??

I get what the es5.min.js does, its compressed with no white space to save loading time etc… but Do I mannually need to change all 3 files?

Making the change of the file mentioned solves my task, but the other 2 js files for that particular file wont have the update then

any advice appreciated thank you for replies