How to publish the package to npm and use it in VP4 project

[xp1632]

-How to publish the package to npm?

-  1. change the package.json's version to 7.0+
-  2. npm run build_lib
-  3. npm publish

-Then download the package from website -In VP4's cmd , jlpm add visual-programming-editor

-To see the modification on jupyter, remember to refresh, it's not real-time rendered