Created
June 4, 2019 14:56
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(() => { | |
'use strict'; | |
/**************** Gulp.js 3 configuration ****************/ | |
const | |
// development or production | |
devBuild = ((process.env.NODE_ENV || 'development').trim().toLowerCase() === 'development'), | |
// directory locations | |
dir = { | |
src : 'src/', | |
build : 'build/' | |
}, | |
// modules | |
gulp = require('gulp'), | |
del = require('del'), | |
noop = require('gulp-noop'), | |
newer = require('gulp-newer'), | |
size = require('gulp-size'), | |
imagemin = require('gulp-imagemin'), | |
sass = require('gulp-sass'), | |
postcss = require('gulp-postcss'), | |
sourcemaps = devBuild ? require('gulp-sourcemaps') : null, | |
browsersync = devBuild ? require('browser-sync').create() : null; | |
console.log('Gulp', devBuild ? 'development' : 'production', 'build'); | |
/**************** clean task ****************/ | |
gulp.task('clean', () => { | |
del([ dir.build ]); | |
}); | |
/**************** images task ****************/ | |
const imgConfig = { | |
src : dir.src + 'images/**/*', | |
build : dir.build + 'images/', | |
minOpts: { | |
optimizationLevel: 5 | |
} | |
}; | |
gulp.task('images', () => | |
gulp.src(imgConfig.src) | |
.pipe(newer(imgConfig.build)) | |
.pipe(imagemin(imgConfig.minOpts)) | |
.pipe(size({ showFiles:true })) | |
.pipe(gulp.dest(imgConfig.build)) | |
); | |
/**************** CSS task ****************/ | |
const cssConfig = { | |
src : dir.src + 'scss/main.scss', | |
watch : dir.src + 'scss/**/*', | |
build : dir.build + 'css/', | |
sassOpts: { | |
sourceMap : devBuild, | |
outputStyle : 'nested', | |
imagePath : '/images/', | |
precision : 3, | |
errLogToConsole : true | |
}, | |
postCSS: [ | |
require('postcss-assets')({ | |
loadPaths: ['images/'], | |
basePath: dir.build | |
}), | |
require('autoprefixer')({ | |
browsers: ['> 1%'] | |
}) | |
] | |
}; | |
// remove unused selectors and minify production CSS | |
if (!devBuild) { | |
cssConfig.postCSS.push( | |
require('usedcss')({ html: ['index.html'] }), | |
require('cssnano') | |
); | |
} | |
gulp.task('css', ['images'], () => | |
gulp.src(cssConfig.src) | |
.pipe(sourcemaps ? sourcemaps.init() : noop()) | |
.pipe(sass(cssConfig.sassOpts).on('error', sass.logError)) | |
.pipe(postcss(cssConfig.postCSS)) | |
.pipe(sourcemaps ? sourcemaps.write() : noop()) | |
.pipe(size({ showFiles:true })) | |
.pipe(gulp.dest(cssConfig.build)) | |
.pipe(browsersync ? browsersync.reload({ stream: true }) : noop()) | |
); | |
/**************** server task ****************/ | |
const syncConfig = { | |
server: { | |
baseDir : './', | |
index : 'index.html' | |
}, | |
port : 8000, | |
open : false | |
}; | |
// browser-sync | |
gulp.task('server', () => | |
browsersync ? browsersync.init(syncConfig) : null | |
); | |
/**************** watch task ****************/ | |
gulp.task('default', ['css', 'server'], () => { | |
// image changes | |
gulp.watch(imgConfig.src, ['images']); | |
// CSS changes | |
gulp.watch(cssConfig.watch, ['css']); | |
}); | |
})(); |
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