Can Yeoman generators update existing files?

Question

So just to give you some context, I\'m trying to create a generator that will create some files (based on user input of course) as well as update some existing files in

Answer 1

You can use the mem-fs-editor, and call the fs.append(filepath, contents, [options]) method.

e.g.

this.fs.append(this.contextRoot + "/index.html", "  
Appended text
");