Created
July 27, 2016 08:24
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Gulp file to optimize js,css and images
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npm install gulp-concat gulp-uglify gulp-strip-debug gulp-autoprefixer gulp-minify-css gulp-changed gulp-imagemin gulp-jshint --save-dev | |
// include gulp | |
var gulp = require('gulp'); | |
//jshint | |
var jshint = require('gulp-jshint'); | |
var changed = require('gulp-changed'); | |
//imgs | |
var imagemin = require('gulp-imagemin'); | |
var minifyHTML = require('gulp-minify-html'); | |
// js files | |
var concat = require('gulp-concat'); | |
var stripDebug = require('gulp-strip-debug'); | |
var uglify = require('gulp-uglify'); | |
// css files | |
var autoprefix = require('gulp-autoprefixer'); | |
var minifyCSS = require('gulp-minify-css'); | |
// JS hint task | |
gulp.task('jshint', function() { | |
gulp.src('./src/scripts/*.js') | |
.pipe(jshint()) | |
.pipe(jshint.reporter('default')); | |
}); | |
// minify new images | |
gulp.task('imagemin', function() { | |
var imgSrc = './src/images/**/*', | |
imgDst = './build/images'; | |
gulp.src(imgSrc) | |
.pipe(changed(imgDst)) | |
.pipe(imagemin()) | |
.pipe(gulp.dest(imgDst)); | |
}); | |
// minify new or changed HTML pages | |
gulp.task('htmlpage', function() { | |
var htmlSrc = './src/*.html', | |
htmlDst = './build'; | |
gulp.src(htmlSrc) | |
.pipe(changed(htmlDst)) | |
.pipe(minifyHTML()) | |
.pipe(gulp.dest(htmlDst)); | |
}); | |
// JS concat, strip debugging and minify | |
gulp.task('scripts', function() { | |
gulp.src(['./src/scripts/lib.js','./src/scripts/*.js']) | |
.pipe(concat('script.js')) | |
.pipe(stripDebug()) | |
.pipe(uglify()) | |
.pipe(gulp.dest('./build/scripts/')); | |
}); | |
// CSS concat, auto-prefix and minify | |
gulp.task('styles', function() { | |
gulp.src(['./src/styles/*.css']) | |
.pipe(concat('styles.css')) | |
.pipe(autoprefix('last 2 versions')) | |
.pipe(minifyCSS()) | |
.pipe(gulp.dest('./build/styles/')); | |
}); | |
// default gulp task | |
gulp.task('default', ['imagemin', 'htmlpage', 'scripts', 'styles'], function() { | |
// watch for HTML changes | |
gulp.watch('./src/*.html', function() { | |
gulp.run('htmlpage'); | |
}); | |
// watch for JS changes | |
gulp.watch('./src/scripts/*.js', function() { | |
gulp.run('jshint', 'scripts'); | |
}); | |
// watch for CSS changes | |
gulp.watch('./src/styles/*.css', function() { | |
gulp.run('styles'); | |
}); | |
}); |
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