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gulpfile.js
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gulpfile.js
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'use strict';
const gulp = require('gulp');
const path = require('path');
const browserSync = require('browser-sync');
const del = require('del');
const plugins = require('gulp-load-plugins')();
const log = require('fancy-log');
/**
* Tasks
*/
gulp.task('build', gulp.series(
buildClean,
less,
js,
images,
fonts,
copy
));
gulp.task('dist', gulp.series(
'build',
cachebust,
gzip,
html
));
gulp.task('default', gulp.series('build', watch));
/**
* Utils
*/
function handleError () {
const args = Array.prototype.slice.call(arguments);
// send error to notification center with gulp-notify
plugins.notify.onError({
title : 'Compile Error',
message: '<%= error.message %>'
}).apply(this, args);
log(args);
// keep gulp from hanging on this task
this.emit('end');
}
function less () {
browserSync.notify('Compiling LESS files...');
return gulp.src(['src/styles/styles.less'])
.pipe(plugins.less())
.on('error', handleError)
.pipe(plugins.autoprefixer())
.pipe(plugins.size({title: 'CSS'}))
.pipe(plugins.cleanCss())
.pipe(plugins.size({title: 'CSS Minified'}))
.pipe(gulp.dest('dist/styles'))
.pipe(browserSync.reload({stream: true}));
}
function js () {
return gulp.src([
'node_modules/html5shiv/dist/html5shiv.min.js',
'node_modules/picturefill/dist/picturefill.min.js'
])
.pipe(gulp.dest('dist/scripts'))
.pipe(browserSync.reload({stream: true}));
}
function images () {
return gulp.src('src/images/**/*')
.pipe(plugins.imagemin({
optimizationLevel: 3,
progressive : true,
interlaced : true
}))
.pipe(gulp.dest('dist/images'))
.pipe(browserSync.reload({stream: true}));
}
function fonts () {
return gulp.src(['node_modules/font-awesome/fonts/*'])
.pipe(gulp.dest('dist/fonts'))
.pipe(browserSync.reload({stream: true}));
}
function html () {
return gulp.src('dist/index.html')
.pipe(plugins.size({title: 'HTML'}))
.pipe(plugins.htmlmin({ collapseWhitespace: true }))
.pipe(plugins.size({title: 'HTML Minified'}))
.pipe(gulp.dest('dist'))
.pipe(browserSync.reload({stream: true}));
}
function cachebust () {
const indexFilter = plugins.filter(['**/*', '!**/index.html'], { restore: true });
return gulp.src('dist/index.html')
.pipe(plugins.useref())
.pipe(indexFilter)
.pipe(plugins.rev()) // calculate assets revision hash
.pipe(indexFilter.restore)
.pipe(plugins.revReplace()) // replace references to assets with revision hash
.pipe(gulp.dest('dist'))
.pipe(plugins.revNapkin()); // delete original files
}
function copy () {
return gulp.src(['src/*.{html,ico,txt}', 'src/CNAME'])
.pipe(gulp.dest('dist'))
.pipe(browserSync.reload({stream: true}));
}
function gzip () {
return gulp.src(['dist/styles/*.css'])
.pipe(plugins.gzip())
.pipe(plugins.size({title: 'CSS Gzip'}))
.pipe(gulp.dest('dist/styles'));
}
function buildClean (callback) {
del(['dist']).then((paths) => { callback(); });
}
function watch () {
// browser sync
browserSync.init({
server: {
baseDir: 'dist',
middleware: [
function (req, res, next) {
const ext = path.extname(req.url);
if ((ext === '' || ext === '.html') && req.url !== '/') {
req.pipe(request('http://' + req.headers.host)).pipe(res);
} else {
next();
}
}
]
},
port: 3000,
open: false
});
// watch files
gulp.watch('src/styles/**/*.less', less);
gulp.watch('src/images/**/*', images);
gulp.watch('src/*.{html,ico,txt}', copy);
}