gulp doesn't see folder in pipeline with gulp-pug and gulp-plumber

Question

I'm using gulp=4.0.2, gulp-plumber=1.2.1, gulp-pug=5.0.0. My file structure is roughly

gulpfile.js
└── src/pug/pages
    ├── contact.pug
    ├── index.pug
    └── projects
        └── project.pug

My gulpfile.js contains

import gulp from 'gulp';
const { src, dest, watch: __watch, parallel, series } = gulp;
import pug from 'gulp-pug';
import plumber from 'gulp-plumber';

function views() {
  return (
    src('src/pug/pages/**/*.pug')
    .pipe(plumber())
    .pipe(pug({
        pretty: true
    }))
    .pipe(dest('./'))
    .pipe(__reload())
  )
}

const watch = parallel(watchTask, reload);
const build = series(parallel(styles, scripts, html, views));

const _build = build;
export { _build as build };
const _default = watch;
export { _default as default };

and when I run

gulp

it creates index.html but it doesn't create projects/project.html, what I would expect.

Answer 1

So basically what happened is that I must have run gulp build before and I forgot about it and then I created new pages when I had src('src/pug/pages/*.pug') and it worked but then I didn't know if it works for folders so I added **/ (src/pug/pages/**/*.pug and got confused. gulp alone runs a default task which doesn't run views function so it doesn't create HTML pages. In my case gulp build creates them.

The solution is to run

gulp build