launch.json

[daviddekoning]

In the 'Setup' video, it mentions a Task to launch the viewer locally, but the repo's .gitignore file says to skip everything in the .vscode folder, which includes launch.json (where I suspect that task is defined).

Can the launch.json that includes that task be added to the repo or some instructions added for creating the preview task?

[olszewski-grzegorz]

I don't think there is any specifc task file created in this repo. I suppose that Léon is using Live Preview extension for VS Code, which can be invoked in the way presented in the video.
The viewer is written in minimalistic way. Dependencies like three.js are loaded directly from cdnjs, so no node stuff is needed. To go live all you need is Live Preview extension or Live Server, which is more widely used for such stuff.