How to compile files in snowpack builder?

Question

Web development

I am asking a question to those who have worked with the Snowpack builder.
I want to understand how files are compiled in it.
In particular, I cannot understand. How can I set the paths of the source files and the resulting folder.
I connected the stylus plugin, in the end I see that all files will be watched, but I don’t know how to compile, for example, stylus to css

, this is how the file structure looks like



in the snowpack.config.js file, I wrote this code

export default {
    plugins: [
    "snowpack-plugin-stylus",
    "snowpack-plugin-pug",
    ],
  };

How and where to prescribe the initial and final - I'm digging into the documentation and I can't make it out.