Edit Custom Visual Developed in PowerBI developer tool (Online)

Hi,

I want to make some changes in my Custom Visual which is devloped in online version of the Power BI DevTool. can any one help me how can i go doing changes in that custom visual using new Power BI PBIVIZ tool.

I have tried Copy pasting my Typescript code to "src/visual.ts" file, but when i try to run it then it give me following error.



I am using D3 Script to draw the visuals.