Webpack is super powerful and was my first choice when I reached this step. The most popular bundler available is Webpack, so let’s look at that first. Because browser support for ES6 modules is also a bit too low, we need to “bundle” the modules together into one file. Importing modules into different files requires an extra step in our build tools, though. Var opts = $.extend(`) instead of $('.' + opts.toggleClass')) and the more obvious use of const and let instead of var , which are block-scoped. Here is an example with an ES5 jQuery header component, with a breakpoint value set somewhere in header.js Drupal behaviours and settings are still used but live in a different javascript file to the generic widget, and simply call it’s function, passing in Drupal settings as “options” as required. We also like to keep our JS widgets generic so that the entire component (entire styleguide for that matter) can be used outside of Drupal as well. It would also create opportunities for variable shadowing and bugs that are insanely difficult to find.If you’ve read my post about the Asset Library system you’ll know we’re big fans of the Component-Driven Design approach, and having a javascript file per component (where needed of course) is ideal. Doing so would be very unpredictable because JavaScript hoists variables to the top of the current scope. Why Can't I Just Import a File Anywhere?ĬodeKit allows you to add one JS file to the beginning or end of another, but does not allow you to import the contents of one file into the middle of another at a specific point. That said, it's a good idea to use ES6 Modules when you can, since that's a universal standard. Future-ProofĬodeKit will always support these special comments. The whole chain is then processed as one giant piece of JavaScript, whether you're syntax-checking, transpiling, or minifying. This is equally valid:ĬodeKit creates a chain of JS files based on your prepend/append statements and then simply combines the content of each file in that chain, in order. The keyword can appear anywhere on the special comment line and applies to all files on that line. ![]() Use the quiet keyword to automatically silence those issues: ![]() Sometimes, you don't want the syntax checker to warn you about issues in linked files. You can also combine multiple files at once with a comma-separated list: These comments let you prepend or append one JS file to another. Special comments in your JS files tell CodeKit how to combine them. If you don't want to use ES6 Modules (or you're working with a library that does not support them), CodeKit offers another, simpler way to combine JavaScript files. Make JS files smaller to reduce page-load time. Write next-generation JavaScript, then translate it back to the older standards that today's browsers understand. Use import statements to combine JS files (ES6 modules). ![]() Quickly find problems and enforce personal coding style-spaces not tabs! ![]() Close Topics First Steps: Getting Started Live-Reload Browsers Browser Sync Set Language Options Set Output Paths & Action Second Steps: Defaults For New Projects Build Your Project Set Target Browsers Stuff To Know: CodeKit + Git Troubleshooting License Recovery PostCSS Tools: Autoprefixer PurgeCSS CSSO Custom PostCSS Plugins Other Tools: npm Babel - (JS Transpiler) Terser - (JS Minifier) Rollup - (JS Bundler) Cache-Buster HTML-Minifier Libsass Bless Languages: Sass Less Stylus JavaScript CoffeeScript TypeScript Pug Haml Slim Kit Markdown JSON Image Optimizers: WebP PNG JPEG SVG GIF Frameworks: CodeKit Frameworks Tailwind Bootstrap Bourbon Bitters Zurb Foundation Susy Nib Jeet Syntax Checkers: ESLint Advanced: Hooks Environment Variables Adding Custom Languages Team Workflows Scripting CodeKit Editor Plugins: Nova Atom Sublime Text Coda 2 More Read-Only Mode Upgrading From 2.0 FAQ CodeKit does many things with JavaScript.
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