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<h1 id="basic-gulp-build-for-sass">Basic Gulp Build for Sass</h1>
<p>2019-01-15</p>
<p>Some designers might shy away from build tools when first starting out and I can understand the reasoning - task runners like <code>gulp</code> and <code>grunt</code> can seem daunting at first. So, I&#8217;ve decided to showcase my go-to setup for <code>gulp</code> and explain what the heck it does step-by-step. </p>
<p>Here is the final <code>gulp.js</code> file in all it&#8217;s glory:</p>
<pre><code>var gulp = require(&#39;gulp&#39;);
var shell = require(&#39;gulp-shell&#39;);
var sass = require(&#39;gulp-sass&#39;);

&#47;* Build and watch Jekyll (change this task to whatever you need) *&#47;
gulp.task(&#39;generate&#39;, shell.task(&#39;jekyll serve&#39;));

&#47;* Compile SCSS files to CSS *&#47;
gulp.task(&#39;styles&#39;, function () {
    return gulp.src(&#39;_includes&#47;assets&#47;sass&#47;styles.scss&#39;)
        .pipe(sass({
            outputStyle: &#39;compressed&#39;
        }).on(&#39;error&#39;, sass.logError))
        .pipe(gulp.dest(&#39;_includes&#47;assets&#47;css&#47;&#39;));
});

&#47;* Compile the assets *&#47;
gulp.task(&#39;assets&#39;, gulp.parallel(
    &#39;styles&#39;
));

&#47;* Build *&#47;
gulp.task(&#39;build&#39;, gulp.series(
    &#39;assets&#39;,
    &#39;generate&#39;
));
</code></pre>
<p>Trust me, it&#8217;s not complicated at all.</p>
<h2 id="grabbing-what-we-need">Grabbing what we need</h2>
<p>For our basic build file we are going to need only three modules: <code>gulp</code>, <code>gulp-shell</code> and <code>gulp-sass</code>.</p>
<pre><code>var gulp = require(&#39;gulp&#39;);
var shell = require(&#39;gulp-shell&#39;);
var sass = require(&#39;gulp-sass&#39;);
</code></pre>
<h4 id="gulp">gulp</h4>
<p>This is the streaming build system, without it we can&#8217;t do anything else.</p>
<h4 id="gulp-shell">gulp-shell</h4>
<p>A gulp command line interface for us to interact with our terminal.</p>
<h4 id="gulp-sass">gulp-sass</h4>
<p>Required for gulp to compile Sass into vanilla CSS.</p>
<h4 id="bonus-tasks">Bonus tasks</h4>
<h2 id="generating-the-build">Generating the build</h2>
<p>Our first step is to create the default task that will generate our build. In this example we are making the assumption that we&#8217;re building a Jekyll website (but you can place any build command here):</p>
<pre><code>gulp.task(&#39;generate&#39;, shell.task(&#39;jekyll serve&#39;));
</code></pre>
<p>Don&#8217;t worry if this <code>generate</code> isn&#8217;t clear, we come back to that later.</p>
<h2 id="processing-our-pre-processor">Processing our pre-processor</h2>
<p>We will name this next task <code>styles</code> since that&#8217;s what it outputs - our styling. We start by telling gulp where our main <code>scss</code> directory is:</p>
<pre><code>&#47;* Change this directory to match yours *&#47;
return gulp.src(&#39;_includes&#47;assets&#47;sass&#47;styles.scss&#39;)
</code></pre>
<p>This next piece tells the plugin to compress our final compiled CSS, log any errors if there are issues with the build and then export it to our destination directory:</p>
<pre><code>.pipe(sass({
    outputStyle: &#39;compressed&#39;
}).on(&#39;error&#39;, sass.logError))

&#47;* Change this to your destination directory *&#47;
.pipe(gulp.dest(&#39;_includes&#47;assets&#47;css&#47;&#39;));
</code></pre>
<h2 id="building-our-assets">Building our assets</h2>
<p>This step isn&#8217;t 100% needed, but I like to include it for when more assets need to be added (minifying JavaScript, compressing images, etc)</p>
<pre><code>&#47;*
Compile the assets
*&#47;
gulp.task(&#39;assets&#39;, gulp.parallel(
    &#39;styles&#39;
));
</code></pre>
<h2 id="altogether-now">Altogether now!</h2>
<p>Now we add a task that runs all other tasks in our gulp file (in this case it will run both <code>assets</code> and <code>generate</code>)</p>
<pre><code>&#47;*
Build
*&#47;
gulp.task(&#39;build&#39;, gulp.series(
    &#39;assets&#39;,
    &#39;generate&#39;
));
</code></pre>
<p>And that&#8217;s it - we&#8217;re done! A very basic <code>gulp</code> build for compiling Sass.</p>
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