On this article, I collect all relevant information about Gulp to have a reference for a successful work with it!
Gulp is like a sequenced NodeJS-App, which does multiple tasks in an order (pipeline) to create a file (data-stream), e.g. SASS assets compiling…
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I found a good article about errorhandling with “Gulp” written by Kate Hudson on following pagelink: http://blog.ibangspacebar.com/handling-errors-with-gulp-watch-and-gulp-plumber/
This is the modified Gulpfile from the Roots.IO “Sage” theme, which the Awebgo template is based on. The functions for font-recalculation and image-resizing are deactivated, so there’s a faster way to watch the scss-files on change. A modification for extended error-handling is also implemented [see: .plumber()]:
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// ## Globals var argv = require('minimist')(process.argv.slice(2)); var autoprefixer = require('gulp-autoprefixer'); var browserSync = require('browser-sync').create(); var pathfinding = require("node-pathfinding"); var changed = require('gulp-changed'); var concat = require('gulp-concat'); var flatten = require('gulp-flatten'); var gulp = require('gulp'); var gulpif = require('gulp-if'); var imagemin = require('gulp-imagemin'); var jshint = require('gulp-jshint'); var lazypipe = require('lazypipe'); var less = require('gulp-less'); var merge = require('merge-stream'); var minifyCss = require('gulp-minify-css'); var plumber = require('gulp-plumber'); var rev = require('gulp-rev'); var runSequence = require('run-sequence'); var sass = require('gulp-sass'); var sourcemaps = require('gulp-sourcemaps'); var uglify = require('gulp-uglify'); // See https://github.com/austinpray/asset-builder var manifest = require('asset-builder')('./assets/manifest.json'); // `path` - Paths to base asset directories. With trailing slashes. // - `path.source` - Path to the source files. Default: `assets/` // - `path.dist` - Path to the build directory. Default: `dist/` var path = manifest.paths; // `config` - Store arbitrary configuration values here. var config = manifest.config || { verbose : true }; // `globs` - These ultimately end up in their respective `gulp.src`. // - `globs.js` - Array of asset-builder JS dependency objects. Example: // ``` // {type: 'js', name: 'main.js', globs: []} // ``` // - `globs.css` - Array of asset-builder CSS dependency objects. Example: // ``` // {type: 'css', name: 'main.css', globs: []} // ``` // - `globs.fonts` - Array of font path globs. // - `globs.images` - Array of image path globs. // - `globs.bower` - Array of all the main Bower files. var globs = manifest.globs; // `project` - paths to first-party assets. // - `project.js` - Array of first-party JS assets. // - `project.css` - Array of first-party CSS assets. var project = manifest.getProjectGlobs(); // CLI options var enabled = { // Enable static asset revisioning when `--production` rev : argv.production, // Disable source maps when `--production` maps : !argv.production, // Fail styles task on error when `--production` failStyleTask : argv.production, // Fail due to JSHint warnings only when `--production` failJSHint : argv.production, // Strip debug statments from javascript when `--production` stripJSDebug : argv.production }; // Path to the compiled assets manifest in the dist directory var revManifest = path.dist + 'assets.json'; // ## Reusable Pipelines // See https://github.com/OverZealous/lazypipe // ### CSS processing pipeline // Example // ``` // gulp.src(cssFiles) // .pipe(cssTasks('main.css') // .pipe(gulp.dest(path.dist + 'styles')) // ``` var cssTasks = function(filename) { return lazypipe() .pipe(function() { return gulpif(enabled.failStyleTask, plumber()); }) /* .pipe(function() { return gulpif(!enabled.maps, sourcemaps.init()); }) */ .pipe(function() { return gulpif('*.less', less()); }) .pipe(function() { return gulpif('*.scss', sass({ outputStyle: 'nested', // libsass doesn't support expanded yet precision: 10, includePaths: ['.'], errLogToConsole: enabled.failStyleTask })); }) .pipe(concat, filename) .pipe(autoprefixer, { browsers: [ 'last 2 versions', 'ie 8', 'ie 9', 'android 2.3', 'android 4', 'opera 12' ] }) .pipe(minifyCss, { advanced: false, rebase: false }) .pipe(function() { return gulpif(enabled.rev, rev()); }) .pipe(function() { return gulpif(!enabled.maps, sourcemaps.write('.', { sourceRoot: 'assets/styles/' })); })(); }; // ### JS processing pipeline // Example // ``` // gulp.src(jsFiles) // .pipe(jsTasks('main.js') // .pipe(gulp.dest(path.dist + 'scripts')) // ``` var jsTasks = function(filename) { return lazypipe() .pipe(function() { return gulpif(!enabled.maps, sourcemaps.init()); }) .pipe(concat, filename) /* .pipe(uglify, { compress: { 'drop_debugger': enabled.stripJSDebug } }) */ .pipe(function() { return gulpif(enabled.rev, rev()); }) .pipe(function() { return gulpif(!enabled.maps, sourcemaps.write('.', { sourceRoot: 'assets/scripts/' })); })(); }; // ### Write to rev manifest // If there are any revved files then write them to the rev manifest. // See https://github.com/sindresorhus/gulp-rev var writeToManifest = function(directory) { return lazypipe() .pipe(gulp.dest, path.dist + directory) .pipe(browserSync.stream, {match: '**/*.{js,css}'}) .pipe(rev.manifest, revManifest, { base: path.dist, merge: true }) .pipe(gulp.dest, path.dist)(); }; // ## Gulp tasks // Run `gulp -T` for a task summary // ### Styles // `gulp styles` - Compiles, combines, and optimizes Bower CSS and project CSS. // By default this task will only log a warning if a precompiler error is // raised. If the `--production` flag is set: this task will fail outright. gulp.task('styles', ['wiredep'], function() { var merged = merge(); manifest.forEachDependency('css', function(dep) { var cssTasksInstance = cssTasks(dep.name); if (!enabled.failStyleTask) { cssTasksInstance.on('error', function(err) { console.error(err.message); this.emit('end'); }); } merged.add(gulp.src(dep.globs, { base : 'styles' }).pipe(cssTasksInstance)); }); return merged.pipe(writeToManifest('styles')); }); // ### Scripts // `gulp scripts` - Runs JSHint then compiles, combines, and optimizes Bower JS // and project JS. gulp.task('scripts', ['jshint'], function() { var merged = merge(); manifest.forEachDependency('js', function(dep) { merged.add(gulp.src(dep.globs, { base : 'scripts' }).pipe(jsTasks(dep.name))); }); return merged.pipe(writeToManifest('scripts')); }); // ### Fonts // `gulp fonts` - Grabs all the fonts and outputs them in a flattened directory // structure. See: https://github.com/armed/gulp-flatten gulp.task('fonts', function() { return; /* return gulp.src(globs.fonts) .pipe(flatten()) .pipe(gulp.dest(path.dist + 'fonts')) .pipe(browserSync.stream()); */ }); // ### Images // `gulp images` - Run lossless compression on all the images. gulp.task('images', function() { return; /* return gulp.src(globs.images) .pipe(imagemin({ progressive: true, interlaced: true, svgoPlugins: [{removeUnknownsAndDefaults: false}, {cleanupIDs: false}] })) .on("error", console.log) .pipe(gulp.dest(path.dist + 'images')) .pipe(browserSync.stream()); */ }); // ### JSHint // `gulp jshint` - Lints configuration JSON and project JS. gulp.task('jshint', function() { return gulp.src(['bower.json', 'gulpfile.js'].concat(project.js)).pipe(jshint()).pipe(jshint.reporter('jshint-stylish')).pipe(gulpif(enabled.failJSHint, jshint.reporter('fail'))); }); // ### Clean // `gulp clean` - Deletes the build folder entirely. gulp.task('clean', require('del').bind(null, [path.dist])); // ### Watch // `gulp watch` - Use BrowserSync to proxy your dev server and synchronize code // changes across devices. Specify the hostname of your dev server at // `manifest.config.devUrl`. When a modification is made to an asset, run the // build step for that asset and inject the changes into the page. // See: http://www.browsersync.io gulp.task('watch', function() { browserSync.init({ files : ['{lib,templates}/**/*.php', '*.php'], proxy : config.devUrl, snippetOptions : { whitelist : ['/wp-admin/admin-ajax.php'], blacklist : ['/wp-admin/**'] } }); gulp.watch([path.source + 'styles/**/*'], ['styles']); gulp.watch([path.source + 'scripts/**/*'], ['jshint', 'scripts']); //gulp.watch([path.source + 'fonts/**/*'], ['fonts']); //gulp.watch([path.source + 'images/**/*'], ['images']); gulp.watch(['bower.json', 'assets/manifest.json'], ['build']); }); // ### Build // `gulp build` - Run all the build tasks but don't clean up beforehand. // Generally you should be running `gulp` instead of `gulp build`. gulp.task('build', function(callback) { runSequence('styles', 'scripts', ['fonts', 'images'], callback); }); // ### Wiredep // `gulp wiredep` - Automatically inject Less and Sass Bower dependencies. See // https://github.com/taptapship/wiredep gulp.task('wiredep', function() { var wiredep = require('wiredep').stream; return gulp.src(project.css).pipe(wiredep()).pipe(changed(path.source + 'styles', { hasChanged : changed.compareSha1Digest })).pipe(gulp.dest(path.source + 'styles')); }); // ### Gulp // `gulp` - Run a complete build. To compile for production run `gulp --production`. /* gulp.task('default', ['clean'], function() { gulp.start('build'); }); */ gulp.task('default', function() { browserSync.init({ files : ['{lib,templates}/**/*.php', '*.php'], proxy : config.devUrl, snippetOptions : { whitelist : ['/wp-admin/admin-ajax.php'], blacklist : ['/wp-admin/**'] } }); gulp.watch([path.source + 'styles/**/*'], ['styles']); gulp.watch([path.source + 'scripts/**/*'], ['jshint', 'scripts']); gulp.watch([path.source + 'fonts/**/*'], ['fonts']); gulp.watch([path.source + 'images/**/*'], ['images']); gulp.watch(['bower.json', 'assets/manifest.json'], ['build']); }); |
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You can build your own WordPress theme with the “Sage” starter-package from Roots.IO and use the enhanced features of Gulp for the layout-design in the SASS language: https://roots.io/sage/
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