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

Yeoman also provides a more elegant way of fs operations using mem-fs-editor.

You can use this.fs.copy, passing a process function as an option to do any modifications to the content:

this.fs.copy(path, newPath, {
    process: function(content) {

        /* Any modification goes here. Note that contents is a Buffer object */

        var regEx = new RegExp('old string', 'g');
        var newContent = content.toString().replace(regEx, 'new string');
        return newContent;
    }
});

This way you can also take advantage of mem-fs-editor features.