node_modules/.bin/rollup -c every time we change a file - we want to make rebuilding the bundle automatic. And since every manual step in a process is a higher risk for failure than an automated step - and because it’s a pain in the ass to have to run. Part III: How to Use Rollup.js for Your Next Project: LiveReloadĪt this point, our project is successfully bundling JavaScript and stylesheets, but it’s still a manual process. So in the next part, we’ll have Rollup watch our files for changes and reload the browser whenever a file is changed. However, it’s still kind of a pain in the ass to have to manually rebuild the bundle every time we make a change. Great! So now we have a pretty solid build process: our JavaScript is bundled, unused code is removed, and the output is compressed and minified, and our stylesheets are processed by PostCSS and injected into the head. The stylesheet is processed by PostCSS and injected by Rollup. We’ll see that the page is now styled, and if we inspect the document we can see the stylesheet was injected in the head, compressed and minified and with all the vendor prefixes and other goodies we expected from PostCSS: node_modules/.bin/rollup -c) and open build/index.html in our browser. With the plugins installed, we can rebuild our bundle (. Rather than wrestling with the config, we’ll just know that it’s being run twice (which is harmless in this case) and silence the warning. import to cssnext() because both it and cssnano() use Autoprefixer, which triggers a warning. + import './styles/main.css' // Import a couple modules for testing. Right at the top of src/scripts/main.js, load the stylesheet: + // Import styles (automatically injected into ). Part II: How to Use Rollup to Process and Bundle Stylesheets tag like we normally would instead, we’re going to use an import statement in.Part I: How to Use Rollup to Process and Bundle JavaScript Files.Then you can restart your gulp watcher after fixing your errors.NOTE: If you don’t have a copy of the project, you can clone the project as it stands at the end of Part I using this command: git clone -b part-2-starter -single-branch Series Navigation While you work, make sure to keep your "gulp" terminal running and visible, if your sass source is invalid, it will crash the watching gulp process, and you will want to see the error message that will output in that terminal. Once gulp sass and livereload are wired up correctly, commit your new files In order for the webpage to render and scale properly on mobile devices, add this meta tag to your public/index.html file in the the element once you save this file, your browser should automatically refresh, and your h1 element should be white.including the initial generated css files, after the first time you compile, you'll have to restart gulp! note livereload will only track files that it sees when you first start the gulp task.while you terminal, browser, and sublime text are all visible, add the following to your styles.scss.You should see a dark grey background and your single black h1 text Open the styles.css file in SublimeText (the /public/styles/styles.css file, not the /sass/styles.scss file) If #333333 loads as the background color, variables are working, and thus, sass is working). In the sass/styles.scss file, write the "Hello World" of Sass (we are checking if variables work. keeps gulp from crashing for scss errors include an h1 element in the body with the content of Hello Gulp, Sass, and Livereload.in the index file head, load css/styles.css.generate a base html5 template in public/index.html.
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