What language is Brackets-shell written in and how it works

Question

I have just come across an application called brackets, which is written in javascript/html/css and it runs in something called "brackets-shell", bracket-shell is based on something called "CEF3". I took a look at its source code. It is mainly c++ but had a file with .mm extension.

My questions are:

What are CEF3 and .mm file extension?

What is brackets-shell written in (what compiler will compile it)?

Is it some kind of "browser", so it just opens html/css/javascript?

Answer 1

• CEF3: Chromium Embedded Browser
• *.mm are Objective-C files
• brackets-shell is a Node (e.g., JS) app