Building

npm must be installed on your system. Get npm from here: Get npm

Make sure that you have installed the required tools:

npm install -g vsce

Here is an example transcript using the default npm and vsce to build VSCode-Wolfram:

npm install
vsce package

The result is a .vsix file in the project directory.

Installing

You can install the built extension from command-line terminal in VsCode:

code --install-extension vsixFilePath