Renamed profiles to presets. Added preconditition.

common.coffee

@@ -1,3 +1,14 @@
+exports.UNDEFINED_TYPE = '[object Undefined]'
+exports.NULL_TYPE = '[object Null]'
+exports.NUMBER_TYPE = '[object Number]'
+exports.STRING_TYPE = '[object String]'
+exports.ARRAY_TYPE = '[object Array]'
+exports.OBJECT_TYPE = '[object Object]'
+
+exports.typeOf = (obj) ->
+  Object.prototype.toString.call(obj)
+
+
 exports.endsWith = (str, suffix) ->
   str.indexOf(suffix, str.length - suffix.length) isnt -1
 
@@ -16,7 +27,15 @@ exports.getDeviceId = (deviceIdStruct) ->
 
   return "#{escape(deviceIdStruct['OUI'])}-#{escape(deviceIdStruct['SerialNumber'])}"
 
+
 exports.extend = (obj, mixin) ->
   obj[name] = method for name, method of mixin        
   obj
 
+
+exports.getParamValueFromPath = (obj, path) ->
+  pp = path.split('.')
+  ref = obj
+  for p in pp
+    ref = ref[p]
+  return ref