refactor gulp tasks, update all gulp dependencies #2122

gulpfile.js

@@ -0,0 +1,85 @@
+const gulp = require('gulp')
+const zip = require('gulp-zip')
+const sass = require('gulp-sass')
+const qunit = require('gulp-qunit')
+const header = require('gulp-header')
+const eslint = require('gulp-eslint')
+const uglify = require('gulp-uglify')
+const rename = require('gulp-rename')
+const minify = require('gulp-clean-css')
+const connect = require('gulp-connect')
+const autoprefixer = require('gulp-autoprefixer')
+const pkg = require('./package.json')
+
+const license = `/*!
+* reveal.js <%= pkg.version %> (<%= new Date().toDateString() %>)
+* <%= pkg.homepage %>
+* MIT licensed
+*
+* Copyright (C) 2020 Hakim El Hattab, https://hakim.se
+*/\n`
+
+gulp.task('js', () => gulp.src(['./js/reveal.js'])
+        .pipe(uglify())
+        .pipe(header(license, {pkg: pkg}))
+        .pipe(rename('reveal.min.js'))
+        .pipe(gulp.dest('./js')))
+
+gulp.task('css-themes', () => gulp.src(['./css/theme/source/*.{sass,scss}'])
+        .pipe(sass())
+        .pipe(gulp.dest('./css/theme')))
+
+gulp.task('css-core', gulp.series(
+
+    () => gulp.src(['css/reveal.scss']).pipe(sass()).pipe(autoprefixer()).pipe(gulp.dest('./css')),
+    () => gulp.src(['css/reveal.css']).pipe(minify({
+        compatibility: 'ie9'
+    })).pipe(header(license, {pkg: pkg}))
+       .pipe(gulp.dest('./css'))
+
+))
+
+gulp.task('css', gulp.parallel('css-themes', 'css-core'))
+
+gulp.task('test', gulp.series(
+
+    () => gulp.src(['./js/reveal.js']).pipe(eslint()).pipe(eslint.format()),
+    () => gulp.src(['./test/*.html']).pipe(qunit())
+
+))
+
+gulp.task('default', gulp.series(gulp.parallel('js', 'css'), 'test'))
+
+gulp.task('package', gulp.series('default', () =>
+
+    gulp.src([
+        './index.html',
+        './css/**',
+        './js/**',
+        './lib/**',
+        './images/**',
+        './plugin/**',
+        './**.md'
+    ]).pipe(zip('reveal-js-presentation.zip')).pipe(gulp.dest('./'))
+
+))
+
+gulp.task('serve', () => {
+
+    connect.server({
+        root: '.',
+        livereload: true,
+        open: true,
+        useAvailablePort: true
+    })
+
+    gulp.watch(['js/reveal.js'], gulp.series('js'))
+
+    gulp.watch([
+        'css/theme/source/*.{sass,scss}',
+        'css/theme/template/*.{sass,scss}',
+    ], gulp.series('css-themes'))
+
+    gulp.watch(['css/reveal.scss'], gulp.series('css-core'))
+
+})