Early BETA of Sciter Assistant for Microsoft Visual Code by ConrLab.
Supports syntax and editing of Sciter HTML and CSS flavours and TIScript.
Code completion in CSS including @mixin/@const constructs and script for this and variables starting from el....
If to update user settings (File->Preferences->User Settings) like this:

then by using Ctrl-K, Ctrl-S sequence you can run editing document in sciter.exe.
Update
The sciter extension is in public repository already, so:


Build RSS channel
Sciter Twitter channel
In Visual Studio Code:
Menu: View -> Command Palette … -> type “Install Extensions”.
It will show side panel with [Search] field.
Type there
sciterand it shall find Sciter extension – click on it to install.