Finished switching to bower.json

lib/util/fallback.js

@@ -0,0 +1,32 @@
+// ==========================================
+// BOWER: fallback
+// ==========================================
+// Copyright 2012 Twitter, Inc
+// Licensed under The MIT License
+// http://opensource.org/licenses/MIT
+// ==========================================
+// A function that takes a list of files and returns the first one that exists
+// If none exists, return null
+
+var fileExists = require('./file-exists');
+var path       = require('path');
+
+var fallback = function (baseDir, files, callback) {
+  if (!Array.isArray(files) || files.length === 0) {
+    return callback(null);
+  }
+
+  var file = files.shift();
+
+  fileExists(path.join(baseDir, file), function (exists) {
+    if (!exists) {
+      return fallback(baseDir, files, callback);
+    } else {
+      return callback(file);
+    }
+  });
+};
+
+module.exports = fallback;
+
+