Gulp how to optimize jade generation?

Question

Pug

Hello!
Who understands gulp tell me what the problem is.
It takes a very long time to generate jade, everything else is generated quickly. Jade generates 118 files, which are organized into folders, the maximum depth being 3 folders. generated about 40 seconds.
At the same time, the same number of sass files and the same structure as jade is generated instantly.

var gulp        = require('gulp'),
    browserSync = require('browser-sync'),
    sass        = require('gulp-sass'),
    jade        = require('gulp-jade'),
    plumber     = require('gulp-plumber'),
    concat      = require('gulp-concat'),
    spritesmith = require('gulp.spritesmith'),
    buffer      = require('vinyl-buffer'),
    csso        = require('gulp-csso'),
    imagemin    = require('gulp-imagemin'),
    merge       = require('merge-stream'),
    reload      = browserSync.reload;

gulp.task('jade', function() {

    return gulp.src(['./app/jade/**/*.jade', '!./app/jade/**/_*.jade'])
        .pipe(plumber())
        .pipe(jade({pretty: true}))
        .pipe(gulp.dest('./dist/'));
});
gulp.task('jade-watch', ['jade'], reload);

gulp.task('sass', function () {
    return gulp.src(['./app/scss/**/*.scss', '!./app/sass/**/_*.scss'])
        .pipe(plumber())
        .pipe(sass())
        .pipe(csso())
        .pipe(gulp.dest('./dist/css'))
        .pipe(reload({stream: true}));
});

gulp.task('jsConcat', function () {
    return gulp.src('./app/js/all/*.js')
        .pipe(concat('all.js', {newLine: ';'}))
        .pipe(gulp.dest('./dist/js/'))
        .pipe(browserSync.stream());
});


gulp.task('jsSync', function () {
    return gulp.src(['./app/js/**/*.js', '!./app/js/all/*'])
        .pipe(plumber())
        .pipe(gulp.dest('./dist/js/'))
        .pipe(browserSync.stream());
});

gulp.task('sprite', function () {

    var spriteData = gulp.src('./app/images/sprite/*.png').pipe(spritesmith({
        imgName: 'sprite.png',
        imgPath: '../images/sprite.png',
        cssName: 'sprite.css'
    }));

    var imgStream = spriteData.img
        .pipe(buffer())
        .pipe(imagemin())
        .pipe(gulp.dest('./dist/images/'));

    var cssStream = spriteData.css
        //.pipe(csso())
        .pipe(gulp.dest('./dist/css/'));

    return merge(imgStream, cssStream);
});

gulp.task('compress', function(){
    gulp.src(['./app/images/**/*.{jpg,jpeg,png,gif}', '!./app/images/sprite/**/*.{jpg,jpeg,png,gif}', '!./app/images/svg/**/*.{jpg,jpeg,png,gif}'])
        .pipe(plumber())
        .pipe(imagemin())
        .pipe(gulp.dest('./dist/images'));
});

gulp.task('watch', function () {
    gulp.watch('./app/scss/**/*.scss', ['sass']);
    gulp.watch('./app/jade/**/*.jade', ['jade']);
    gulp.watch('./app/js/**/*.js', ['jsSync']);
    gulp.watch('./app/js/all/**/*.js', ['jsConcat']);
  gulp.watch('./app/jade/**/*.jade',      ['jade-watch']);
});

gulp.task('browser-sync', function () {
    browserSync.init({
        port: 1337,
        server: {
            baseDir: './dist/'
        }
    });
});

gulp.task('default', ['jade', 'sass', 'jsConcat', 'jsSync', 'watch', 'browser-sync']);

Answer 1

https://github.com/juanfran/gulp-jade-inheritance