Having issues with Gulp.js file and Jekyll - jekyll

Question

Still getting familiar with Gulp, piping, etc. I have my Gulp.js file all set up but cannot figure out how to get the Jekyll html task to fire AFTER the _site folder has been compiled.
THE gulp file is below:
var gulp = require('gulp'),
sass = require('gulp-ruby-sass'),
autoprefixer = require('gulp-autoprefixer'),
minifycss = require('gulp-minify-css'),
jshint = require('gulp-jshint'),
uglify = require('gulp-uglify'),
rename = require('gulp-rename'),
clean = require('gulp-clean'),
concat = require('gulp-concat'),
notify = require('gulp-notify'),
cache = require('gulp-cache'),
plumber = require('gulp-plumber'),
browserSync = require('browser-sync'),
minifyHTML = require('gulp-minify-html'),
cp = require('child_process');
//Source variables
var sassSources = ['components/sass/application.scss'];
var jsSources = ['components/js/*.js'];
var htmlSources = ['_site/**/*.html'];
gulp.task('styles', function() {
return gulp.src(sassSources)
.pipe(plumber())
.pipe(sass({ style: 'expanded' }))
.pipe(autoprefixer('last 2 version', 'safari 5', 'ie 8', 'ie 9', 'opera 12.1', 'ios 6', 'android 4'))
.pipe(gulp.dest('css'))
.pipe(rename({suffix: '.min'}))
.pipe(minifycss())
.pipe(gulp.dest('css'))
.pipe(gulp.dest('_site/css'))
.pipe(browserSync.reload({stream:true}))
.pipe(notify({ message: 'Styles task complete' }));
});
gulp.task('html', function() {
var opts = {comments:false, spare:false, quotes: false, empty: false};
gulp.src(htmlSources)
.pipe(minifyHTML(opts))
.pipe(gulp.dest('_site/'))
.pipe(notify({ message: 'HTML minification complete' }));
});
gulp.task('scripts', function() {
return gulp.src(jsSources)
//.pipe(jshint('.jshintrc'))
//.pipe(jshint.reporter('default'))
.pipe(concat('application.js'))
.pipe(gulp.dest('js'))
.pipe(rename({suffix: '.min'}))
.pipe(uglify())
.pipe(gulp.dest('js'))
.pipe(gulp.dest('_site/js'))
.pipe(notify({ message: 'Scripts task complete' }));
});
gulp.task('clean', function() {
return gulp.src(['stylesheets', 'javascripts'], {read: false})
.pipe(clean());
});
//Build the Jekyll Site
gulp.task('jekyll-build', function (done) {
browserSync.notify('Building Jekyll');
return cp.spawn('jekyll', ['build'], {stdio: 'inherit'})
.on('close', done);
});
//Rebuild Jekyll & do page reload
gulp.task('jekyll-rebuild', ['jekyll-build'], function () {
browserSync.reload();
});
//Wait for jekyll-build, then launch the Server
gulp.task('browser-sync', ['jekyll-build'], function() {
browserSync.init(null, {
server: {
baseDir: '_site'
},
host: "localhost"
});
});
gulp.task('watch', function() {
// Watch .sass files
gulp.watch('components/sass/**/*.scss', ['styles']);
// Watch .js files
gulp.watch(jsSources, ['scripts']);
// Watch html files
gulp.watch(['index.html', '_layouts/*.html', '_posts/*'], ['jekyll-rebuild']);
});
gulp.task('default', ['clean'], function() {
gulp.start('styles', 'scripts', 'browser-sync', 'html', 'watch');
});

Answer 1

You have to specify the dependencies to your html and style tasks in the jekyll-build task:
gulp.task('jekyll-build', ['styles', 'html'], function (done) {
...
}
You also need to change your html task adding a return before gulp.src.