Why doesn't Guplp create a dist folder?

Question

gulp.js

Please help me understand the problem, why Guplp does not create the dist folder. I am learning how to work with gulp and doing everything as shown in the video. I rechecked the code several times, found a similar question with the same code on Habr, everything is the same, only the problem is not solved. When running the gulp command, it does not give any errors. Can someone see my mistake, what am I doing wrong?
I already reinstalled this package and the problem was not solved either. Does it make sense to reinstall Node.JS on PC?