Open Source refers to any program whose source code is made available for the user or modification as users or other developers see fit. Open Source software is usually developed as a public collaboration and made freely available. (WhatIs.com)
The purpose of this blog was how to familiar with how to use git.
The changes I made to the file in filerjs/filer/tests/spec/fs.unwatchFile.spec.js was to modernize the use of var declaration in JS. The original file was using "var" and I need to change "var" into "const" or "let" instead.
Here are issue and solution.