Mouse position in the screen recording was off positions. Don't know why but it was recorded on a chrome book. Jsketcher is a browser based parametric feature based 3d modeling tool that runs in the browser. This is a video showing an in work development build using a fresh openCascade based wasm for the BREP engine and integrating the 2d sketcher and feature history pipeline. New feature commands are defined using reuable widgets to build each of the UI components and handled in a structured way that should allow other developers to contribute to the project.
Next teaser video might show some assembly constraints :-D but that depends on how long it takes to polish the core modeler code.
An overview of the project can be seen at https://www.autodrop3d.com/parametric... and code is regularly being updated on github.