![]() Yarn goig to ask you for basic information about the project, like the name of the project, version, description, author, repo url, and so on. So, let’s start a new project using Yarn: mkdir yarn_test ![]() Now, and previous to introduce Yarn applied to the RoR context, we are going to start using Yarn independently. To check all went well, just check the version of yarn installed: yarn -version Using yarn You can also use Chocolatey choco install yarnĪnd Scoop as well scoop install yarn Ubuntuįirst you need to configure the repository curl -sS | sudo apt-key add -Įcho "deb stable main" | sudo tee /etc/apt//yarn.listĪnd finally simply: sudo apt-get update & sudo apt-get install yarn The easiest way is to use the installer, you can find it here. So they needed a tool that was fast and reliable.Īnd the best of all is that Yarn development is supported by other companies like Google and Tilde. According to Facebook, they were using NPM but as the size of their codebase and the number of engineers working on their projects grew, they ran into problems with consistency, security and performance. Yarn is a package manager created by Facebook, and announced last year. In this post we will cover how the integration with Yarn works. That’s a big step in the right direction towards where the web development is heading. But, the Rails community showing their willingness to adopt new ways to do things if needed, decided with the release of Rails 5.1 to include Yarn as package and dependency manager for JS assets and optionally Webpack to handle module bundles and compilation. It was not a surprise that when Chris McCord released Phoenix Framework two years ago, and he decided to include Brunch as asset build tool, adopting NPM as package manager. And sometimes the process of manage assets dependencies in Rails felt repetitive considering the remarkable advances in the js ecosystem for this area. On the other hand, many years ago a growing set of tools emerged from the javascript community to solve many of the problems the developers had to face every time they started a new javascript project, giving practical solutions to the question: How to handle packages and their dependencies in a fast and efficient manner? And that’s how many tools (like NPM, Bower, Grunt, etc.) came out. For those cases, the maintenance of third party libraries was also a problem to such degree you usually needed to install extra gems that encapsulated all the process of integration and made easy the upgrade to newer versions of the libraries. About all, issues related to the assets management that since version 4.0 were handled by Sprockets, a gem that allowed us centralize all the process of grouping, use and compile all our assets using practical conventions.Īlthough Sprockets do a fantastic job for most of developers, it raised some issues for others, about all when you needed to work with complex third party libraries in javascript, usually with many additional dependencies. Rails 5.1 solves many of the “pending issues” of the recent years. Rails 5.1, the proof of the maturity of the ecosystem I’m preparing a post series to explain the main changes introduced in Rails 5.1, in this post, I’m going to address the new way to deal with Javascript using Yarn, and of course I going to write a little about Yarn in general. ![]() There are plenty of amazing features and new changes, one of my favorite is the integration with Yarn, a great package manager tool for javascript, which is fast, secure and reliable. Using IgnorePluginĮdit config/webpack/environment.Just a week ago was announced the most recent version of Ruby on Rails, one of my favorite web frameworks which I have used in many projects for over three years. There's not much we can do in our code to optimize the way we import moment, but Webpack is powerful enough to allow us to ignore specific/all locales. If you're looking for a modern, modular, ES6 alternative, try date-fns. Moment.js was written before the concept of ES6 modules even existed so it's no wonder that it doesn't make good use of it and as a result, it eagerly includes all the locales when we import it. Webpack did its best to optimize the bundle size by tree shaking, but it works only for libraries implemented using ES6 modules. It's quite apparent that locales are responsible for the bloat. Bundle analyzer states that stat size of application.js is 1.17 MB. Visualizing the dependencies made it evident that moment and loads are the main reasons for JS bloat in our simple app. Feel free to scroll and zoom in for greater detail! ![]() This operation will open the web browser with a simple application allowing you to analyze the JavaScript dependencies visually. 2 node_modules/.bin/webpack-bundle-analyzer stats.json ![]()
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