I want to declare custom widget api in script

Question

Hi Team, 
 I want to use custom widget api in javascript and I am getting exception like below screenshoe. 
 Can anyone help me to how to declare custom widget api in javascript PFA below?? Thanks! 
 
 Regrads, 
 Kiran Cherukuri.

Patrick M. · Accepted Answer

Where are you trying to use this exactly? This will only work in widget jsm/server side files, if you are trying to do this in a js file or client script it won't work.

Former Member · Answer

Instead of js file, I done the logic in vm and completed it.Thanks for everyone