How do you assemble BEM layout?

Question

css

Initial data: It is
necessary to organize a convenient working environment for layout with blocks (BEM ideology) based on Gulp.
The file structure is the same as in the original: each block is a separate folder with the name of the block, the files are divided by technologies:

Processors: jade (pug) for html, sass (or postcss-nested) for css.
The main question for those who make layout with such an environment, what plugins for gulp do you collect everything from this folder structure into ready-made html-css?
Do you take into account such a moment as an incremental build (when building a project, only those files that are affected by the changes are modified and the entire project is not rebuilt)?
The ideal would be to take a look at your environment (gulpfile.js, package.json, etc.) or the examples you used as the basis for your environment.

Answer 1

I made based on this webinar, and a couple more from the same guy - https://ru.bem.info/forum/-685/