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How to use Fancy Ext.Logger?


How to customize Ext.Logger effectively?
For development, We can customize Ext.Logger mechanism and add colors to text as below 

/**
* Fancy Ext.Logger.warn(), error()
* By including this file we'll force override of the Ext.Logger.warn() behavior. 
eg: 
Ext.Logger.error(errMsg);
Ext.Logger.warn('Warning msg');
*/

Ext.define('Master.util.Log', {
 singleton: true,
 /**
  * Logs color-coded console message; intended for development only  
  * to be used in betwee debug directives.  
  * @param {String} text to log  
  */

 warn: function(text) {
  console.log('%cWARN: %s', 'background: #222; color: orange', text);
 },

 error: function(text) {
  console.log('%cERROR: %s', 'background: #d9e6ee; color: red', text);
 }

}, function() {
 Ext.Logger.warn = Master.util.Log.warn;
 Ext.Logger.error = Master.util.Log.error;
});

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