Grunt.js output and write contents of folder to file?

Goal:

Dynamically include /static/js/**/*.js and /static/css/**/*.css files too <head>

Method:

I am using client side templating partials, so in this example, I would like to write filepaths of everything in:

/static/js/**/*.js too /templates/head.js.dust
/static/css/**/*.css too /templates/head.css.dust

File paths are not enough of course. I need a way to preprocess the the output so that every "file" is wrapped by appropriate tags like:

<!-- /templates/head.js.dust -->
<script src="/static/js/assests/jquery.js"></script>
<script src="/static/js/assests/jquery_ui.js"></script>
<script src="/static/js/app.js"></script>
...

<!-- /templates/head.css.dust -->
<link src="/static/css/assests/jquery_ui.css"/>
<link src="/static/css/app.css"/>
...

Question:

Is there a grunt module out there that already does something like this?

Bonus Points: How do I even get started building something like this if it does not?

You can do so in a fairly easy way:

grunt.registerMultiTask("assetAppend", "Append JS/CSS assets to a file", function() {
    var paths = grunt.file.expand( this.data.paths ),
        out = this.data.output,
        contents = "";

    paths.forEach(function( path ) {
        if ( /\.js$/i.test( path ) ) {
            contents += '<script src="' + path + '"></script>';
        } else if ( /\.css$/i.test( path )) {
            contents += '<link rel="stylesheet" type="text/css" href=' + path + ' />';
        }
    });

    grunt.file.write( out, contents );
});

grunt.initConfig({
    assetAppend: {
        js: {
            paths: ["static/js/**/*.js"],
            output: "head.js.dust"
        },
        css: {
            paths: ["static/css/**/*.css"],
            output: "head.css.dust"
        }
    }
});

This example is now part of my plugin grunt-contrib-assetpush