Creating bundles for culture files via Node.js

a-createBundles.js

// get native file system object
var fs = require('fs')
    // get a template
    , template = fs.readFileSync('./template.txt', 'utf8')
    
    // read files from a directory called '/cultures' for file names, specifically language tag, e.g., 'en-US' or 'fr-FR'
    , filesInDir = fs.readdirSync('./cultures/')
    
    // create file handle to output to
    , stream = fs.createWriteStream('./bundles.txt')    
    , tempBundle
    , value
    , reg
    ;

stream.once('open', function(fd) {
    // iterate through each file found in the directory
    filesInDir.map(function(val, key) {
        // extract just the language tag from file, .e.g 'atlas.culture.en-US.js', just gets 'en-US'
        value = val.replace('atlas.culture.','').replace('.js','');
        
        // replace string 'languageTag'
        reg = new RegExp("languageTag", "g")
        
        // with value
        tempBundle = template.replace(reg, value);

        // output to file 
        stream.write(tempBundle);
    });
    stream.end();
});

b-template.txt

<ScriptBundle>
	<VirtualPath>~/bundles/libs/atlas/cultures/languageTag/js</VirtualPath>
	<FilePath>\assets\global\libs\atlas\js\cultures\atlas.culture.languageTag.js</FilePath>
	<Includes>
		<Include>
			<VirtualPath>~/assets/global/libs/atlas/js/cultures/atlas.culture.languageTag.js</VirtualPath>
		</Include>
	</Includes>
</ScriptBundle>

c-bundles.txt

// sample ScriptBundle block, but 385 of these for each culture file
<ScriptBundle>
	<VirtualPath>~/bundles/libs/atlas/cultures/af-ZA/js</VirtualPath>
	<FilePath>\assets\global\libs\atlas\js\cultures\atlas.culture.af-ZA.js</FilePath>
	<Includes>
		<Include>
			<VirtualPath>~/assets/global/libs/atlas/js/cultures/atlas.culture.af-ZA.js</VirtualPath>
		</Include>
	</Includes>
</ScriptBundle>
<ScriptBundle>
	<VirtualPath>~/bundles/libs/atlas/cultures/af/js</VirtualPath>
	<FilePath>\assets\global\libs\atlas\js\cultures\atlas.culture.af.js</FilePath>
	<Includes>
		<Include>
			<VirtualPath>~/assets/global/libs/atlas/js/cultures/atlas.culture.af.js</VirtualPath>
		</Include>
	</Includes>
</ScriptBundle>

Where culture directory looks like this for 385 files:

...
atlas.culture.tg-Cyrl-TJ.js
atlas.culture.tg-Cyrl.js
atlas.culture.tg.js
atlas.culture.th-TH.js
atlas.culture.th.js
atlas.culture.tk-TM.js
atlas.culture.tk.js
atlas.culture.tn-ZA.js
atlas.culture.tn.js
atlas.culture.tr-TR.js
atlas.culture.tr.js
atlas.culture.tt-RU.js
atlas.culture.tt.js
atlas.culture.tzm-Latn-DZ.js
atlas.culture.tzm-Latn.js
...