unable to understand the architecture of legacy source code

Hi All,

I have legacy source code and need to understand architecture of legacy
source code.

this source code is same MVC architecture as in ruby on rails project
but all controllers,models and helper are the .js files instead of .rb
files.It also does not hold any config folder.

Thanks in advance.Please let me know if further detail is require.

All files are JavaScript-Files? Probably you should ask in a node.js group first. Probably they can recognize the architecture of that code and tell you what Framework it is (if any). But independent where you ask, you will have to provide code examples or even the whole code.