Front-End Workflows with Gulp

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FRONT-END WORKFLOWS WITH GULP @BERMONPAINTER / Confoo

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A BUILD SYSTEM. A TASK RUNNER. A WORKFLOW AUTOMATOR. Automate your mundane and repetitive tasks like preprocessing, minifying, concatenating, and optimizing ﬁles.

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WORKFLOW & INSTALLATION

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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No content

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$ npm install -g gulp

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$ sudo npm install -g gulp

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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$ npm init

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{ "name" : “gulp-project-name”, "version" : "0.0.0", }

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$ npm install --save-dev gulp

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{ "name": "gulp-project-name, "version": "0.0.0", "devDependencies": { "gulp": "^3.8.8" } }

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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$ touch gulpfile.js

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var gulp = require('gulp');

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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var gulp = require('gulp'); gulp.task('task-name', function() { . . . }); gulp.task('default', ['task-name', 'task-name']);

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$ gulp task-name

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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Install Node / Gulp Setup package.json Create gulpﬁle.js Write Gulp tasks

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3 PRIMARY CONCEPTS

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PLUGINS The core of everything in Gulp. Do one thing. Do it well.

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http://gulpjs.com/plugins/

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STREAMS How you move from one task to another.

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TASKS Allow us to interact with plugins.

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GULP vs GRUNT

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• Code over conﬁguration • Conﬁguration over code

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• Code over conﬁguration • Stream based • Conﬁguration over code • File based

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• Code over conﬁguration • Stream based • Conﬁguration over code • File based, heavy IO

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FILE HANDLING IN GRUNT .scss .scss .scss .scss .css .min.css

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FILE HANDLING IN GULP .scss .scss .scss concat() sass() minify() .min.css rename()

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FILE HANDLING IN GULP .scss .scss .scss concat() sass() minify() .min.css rename() PIPE

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CODE OVER CONFIGURATION

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HIGH QUALITY PLUGINS

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FAST/EFFICIENT, LOW IO

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THE GULP API

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gulp.task

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gulp.task('name', ['dependencies'], function(done) { . . . });

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gulp.task('build',['compile-sass', 'lint-js', 'compress-images']);

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gulp.task('default', ['task-name', 'task-name']);

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gulp.src

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gulp.src(['source/**/*.js', '. . .'])

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gulp.dest

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gulp.src(['. . .', 'build/assets/**/*.js'])

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gulp.src('./source/scss/*.scss') .pipe(sass()) .pipe(gulp.dest('./build/assets/css'));

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gulp.watch

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gulp.watch('source/**/*.scss', ['compile']);

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gulp.task('watch', function () { gulp.watch('source/**/*.scss', ['compile']); }); watcher.on('change', function (event) { // added, changed or deleted files console.log('Event type: ' + event.type); // The path of the modified file console.log('Event path: ' + event.path); });

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MAXIMUM CONCURRENCY

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COMMON WORKFLOW TASKS

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COMPILE SASS

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npm install —save-dev gulp-ruby-sass

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// Dependencies var sass = require('gulp-ruby-sass'); // Gulp task gulp.task('compile-sass', function(){ return gulp.src('source/sass/*.scss') .pipe(sass({sourcemap: true})) .pipe(gulp.dest('assets/css')); });

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$ gulp compile-sass

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COMPILE COFFESCRIPT

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npm install —save-dev gulp-coffee

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// Dependencies var coffee = require('gulp-coffee'); // Gulp Task gulp.task('compile-coffee', function() { gulp.src('./source/coffeescript/*.coffee') .pipe(coffee({bare: true}).on('error', gutil.log)) .pipe(gulp.dest('./assets/js')) });

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$ gulp compile-coffee

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COMPILE JADE

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npm install —save-dev gulp-jade

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// Dependencies var jade = require('gulp-jade'); // Gulp Task gulp.task('compile-jade', function() { var YOUR_LOCALS = {}; gulp.src('./source/*.jade') .pipe(jade({ locals: YOUR_LOCALS })) .pipe(gulp.dest('./build/')) });

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$ gulp compile-jade

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COMBINE

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gulp.task('default', ['compile-sass', 'compile-jade', 'compile-coffee']);

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STATIC SITE GENERATOR Excellent example courtesy of @andrewdc

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var gulp = require('gulp'), gutil = require('gulp-util'), sass = require('gulp-sass'), rubysass = require('gulp-ruby-sass'), autoprefixer = require('gulp-autoprefixer'), fileinclude = require('gulp-file-include'), rename = require('gulp-rename'), notify = require('gulp-notify'), lr = require('tiny-lr'), livereload = require('gulp-livereload'), connect = require('gulp-connect'), plumber = require('gulp-plumber'), server = lr(), path = require("path"); var paths = { templates: './templates/', sass: 'css/source/' };

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TEMPLATES & PARTIALS

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// Handle templates and partials gulp.task('fileinclude', function() { return gulp.src(path.join(paths.templates, '*.tpl.html')) .pipe(fileinclude()) .pipe(rename({ extname: "" })) .pipe(rename({ extname: ".html" })) .pipe(gulp.dest('./')) .pipe(livereload(server)) .pipe(notify({ message: 'Includes: included' })); });

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COMPILE SASS

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// Compile Sass (Libsass) gulp.task('sass', function() { return gulp.src(path.join(paths.sass, '*.scss')) .pipe(sass({ style: 'expanded', sourceComments: 'map', errLogToConsole: true})) .pipe(autoprefixer('last 2 version', "> 1%", 'ie 8', 'ie 9')) .pipe(gulp.dest('css')) .pipe(livereload(server)) .pipe(notify({ message: 'LibSass files dropped!' })); });

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// Compile Sass (Ruby version) gulp.task('rubysass', function() { return gulp.src(path.join(paths.sass, '*.scss')) .pipe(plumber()) .pipe(rubysass({ sourcemap: true, style: 'expanded'})) .pipe(autoprefixer('last 2 version', "> 1%", 'ie 8', 'ie 9')) .pipe(gulp.dest('css')) .pipe(livereload(server)) .pipe(notify({ message: 'Ruby Sass files dropped!' })); });

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LOCAL SERVER

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// Create server gulp.task('connect', connect.server({ port: 5678, root: [__dirname], livereload: false })); function createWatcher(task) { // Listen on port 35729 server.listen(35729, function (err) { if (err) { return console.error(err) }; //Watch task for sass gulp.watch(path.join(paths.sass, '**/*.scss'), [task]); // watch task for gulp-includes gulp.watch(path.join(paths.templates, '**/*.html'), ['fileinclude']); }); }

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WATCHERS

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// Watch for libsass changes gulp.task('watch', function() { createWatcher('sass'); });

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// Watch for Ruby Sass changes gulp.task('rubywatch', function() { createWatcher('rubysass'); });

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RUNNING GULP COMMANDS

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// Default gulp command gulp.task('default', ['fileinclude', 'sass', 'connect', 'watch'], function() {});

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$ gulp

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// Ruby gulp command gulp.task('useruby', ['fileinclude', 'rubysass', 'connect', 'rubywatch'], function() { });

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$ gulp useruby

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MOST EXCELLENT PLUGINS

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gulp-concat

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var concat = require('gulp-concat'); gulp.task('concatinate', function() { return gulp.src('assets/javscript/*.js') .pipe(concat('all.js')) .pipe(gulp.dest('build/all.js')) });

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gulp-uglify

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var uglify = require('gulp-uglify'); gulp.task('minify', function() { return gulp.src('assets/javscript/*.js') .pipe(concat('all.js')) .pipe(uglify()) .pipe(gulp.dest('build/all.js')) });

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gulp-clean

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var gulp = require('gulp'); var clean = require('gulp-clean'); gulp.task('clean', function () { return gulp.src('build', {read: false}) .pipe(clean()); });

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gulp-plumber

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gulp-rename

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var rename = require('gulp-rename'); gulp.task('vendor', function() { return gulp.src('source/*.js') .pipe(concat('all.js')) .pipe(gulp.dest('build')) .pipe(uglify()) .pipe(rename('all.min.js')) .pipe(gulp.dest('build')) .on('error', gutil.log) });

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gulp-watch

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gulp-load-plugins

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var gulp = require('gulp'), gulpLoadPlugins = require('gulp-load-plugins'), plugins = gulpLoadPlugins(); gulp.task('js', function () { return gulp.src('js/*.js') .pipe(plugins.jshint()) });