For a long time it has been possible to generate JavaScript code that runs in the browser (check the Vult demo). However the code was not very easy to integrate since it still needed some manual coding.
Now Vult provides a new template for JavaScript that generates the code of a ScriptProcessorNode that can be easily added to a Web Audio project.
An example can be found in this repository https://github.com/modlfo/vult-webaudio
The repository contains instructions and also a working example: https://modlfo.github.io/vult-webaudio/