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gulpfile.js
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gulpfile.js
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var gulp = require("gulp");
var clean = require('gulp-clean');
var concat = require("gulp-concat");
var sourcemaps = require('gulp-sourcemaps');
var minifyHtml = require("gulp-minify-html");
var critical = require('critical').stream;
var cleanCSS = require('gulp-clean-css');
var autoprefixer = require('gulp-autoprefixer');
var sass = require('gulp-sass');
var uncss = require('gulp-uncss');
var uglify = require("gulp-uglify");
var imagemin = require('gulp-imagemin');
var imageminPngquant = require('imagemin-pngquant');
var imageminZopfli = require('imagemin-zopfli');
var imageminMozjpeg = require('imagemin-mozjpeg');
var imageminGiflossy = require('imagemin-giflossy');
var paths = {
srcJS: "src/js/*.js",
srcCSS: "src/css/*.css",
srcSCSS: "src/scss/*.scss",
srcHTML: "src/*.html",
srcIMAGES: "src/images/*",
vendorsJS: "src/vendors/*.js",
vendorsCSS: "src/vendors/*.css",
dist: "dist",
distCSS: "dist/css",
distJS: "dist/js",
distIMAGES: "dist/images"
}
//============================ GENERAL ============================//
var browserSync = require('browser-sync').create();
gulp.task('browser-sync', function() {
browserSync.init({
server: {
baseDir: "./dist"
}
});
});
// Clean Dist folder
gulp.task('clean-dist', function() {
return gulp.src(paths.dist)
.pipe(clean({ force: true }));
});
//============================ SASS ============================//
// Static Server + watching scss/html files
gulp.task('serve', ['sass'], function() {
browserSync.init({
server: "./dist"
});
gulp.watch(paths.srcSCSS, ['sass']);
gulp.watch(srcHTML).on('change', browserSync.reload);
});
// Compile sass into CSS & auto-inject into browsers
gulp.task('sass', function() {
return gulp.src(paths.srcSCSS)
.pipe(sass())
.pipe(gulp.dest(paths.srcCSS))
.pipe(browserSync.stream());
});
//============================ CSS ============================//
gulp.task('minify-individual-css', function() {
return gulp.src(paths.srcCSS)
.pipe(autoprefixer('last 4 version'))
.pipe(cleanCSS())
.pipe(gulp.dest(paths.distCSS));
});
gulp.task('minify-merge-css', function() {
return gulp.src([paths.vendorsCSS, paths.srcCSS])
.pipe(concat("build.min.css"))
.pipe(autoprefixer('last 4 version'))
.pipe(cleanCSS())
.pipe(gulp.dest(paths.distCSS));
});
//============================ HTML ============================//
gulp.task("minify-html", function() {
gulp.src(paths.srcHTML)
.pipe(minifyHtml())
.pipe(gulp.dest(paths.dist));
});
gulp.task("critical-html", function() {
gulp.src(paths.srcHTML)
.pipe(gulp.dest(paths.dist))
.pipe(critical({ base: 'dist/', inline: true, css: ['dist/css/build.min.css'] }))
.on('error', function(err) { gutil.log(gutil.colors.red(err.message)); })
.pipe(gulp.dest(paths.dist));
});
//============================ JS ============================//
gulp.task("minify-individual-js", function() {
gulp.src(paths.srcJS)
.pipe(uglify())
.pipe(gulp.dest(paths.distJS));
});
gulp.task("minify-merge-js", function() {
gulp.src(["src/vendors/head.min.js","src/vendors/jquery.min.js", "src/vendors/bootstrap.min.js", "src/vendors/*.js", "src/js/*.js"])
.pipe(concat("build.min.js"))
.pipe(uglify())
.pipe(gulp.dest(paths.distJS));
});
//============================ IMAGES ============================//
gulp.task('minify-images', function() {
gulp.src(paths.srcIMAGES)
.pipe(imagemin([
//png
imageminPngquant({
speed: 1,
quality: 98 //lossy settings
}),
imageminZopfli({
more: true
}),
//gif
// imagemin.gifsicle({
// interlaced: true,
// optimizationLevel: 3
// }),
//gif very light lossy, use only one of gifsicle or Giflossy
imageminGiflossy({
optimizationLevel: 3,
optimize: 3, //keep-empty: Preserve empty transparent frames
lossy: 2
}),
//svg
imagemin.svgo({
plugins: [{
removeViewBox: false
}]
}),
//jpg lossless
imagemin.jpegtran({
progressive: true
}),
//jpg very light lossy, use vs jpegtran
imageminMozjpeg({
quality: 90
})
]))
.pipe(gulp.dest(paths.distIMAGES))
});
gulp.task('watch', function() {
gulp.watch([paths.srcJS, paths.vendorsJS], ['minify-merge-js']);
gulp.watch([paths.srcCSS, paths.srcSCSS, paths.vendorsCSS], ['minify-merge-css']);
// gulp.watch([paths.srcHTML], ['minify-html']);
gulp.watch([paths.srcHTML], ['critical-html']);
gulp.watch([paths.srcIMAGES], ['minify-images']);
gulp.watch(srcHTML).on('change', browserSync.reload);
gulp.watch(srcCSS).on('change', browserSync.reload);
gulp.watch(srcJS).on('change', browserSync.reload);
gulp.watch(srcIMAGES).on('change', browserSync.reload);
});
gulp.task("default", ["browser-sync", "critical-html", "minify-merge-js", "minify-merge-css", "minify-images"]);