I encourage you to read his release blog, as well as Yarn’s official features page for more reasons. In his announcement of the Yarn 2 release on dev.to, Maël Nison, provided a lot of insights into the features and their perils that make Yarn 2 the right choice for future JavaScript and Node.js projects.
When building Yarn 2 with TypeScript, the opportunity arose for also decreasing the complexity and maintenance of the very core, by creating a plugin architecture that allows for others to extend Yarn. Perhaps this is more of a developer/maintainer perspective rather than the end-user’s but still important to capture. Due to the nature of Plug’n’Play with Yarn, it is able to apply strict checks, such as disallowing packages to refer to so-called phantom packages that aren’t defined within a package or project’s list of dependencies.yarn/cache is mounted as read-only and so it doesn’t allow malicious attempts to modify already installed packages on the file system. This isn’t to say, however, that Tink’s approach to Plug’n’Play is the same as Yarn’s, but worth rehearsing that these ideas have been spreading for a while with different experiments across our JavaScript ecosystem.Īn interesting security angle with how Yarn 2 implements Plug’n’Play: Kat Marchán has show-cased Tink in JSConf Eu 2019 during her presentation. The Plug’n’Play strategy is not only reserved to the new Yarn version but rather something we’ve already seen before in the ecosystem. What hasn’t been said on node_modules? The new Yarn docs go into further details about the shortcomings of node_modules as a folder structure and iterate why a new way of thinking about how we manage dependencies is needed.
The good news with Yarn 2 is that now, Yarn doubles as being both a package manager as well as a project manager and aims to provide a wholesome experience for running monorepos smoothly. Whether you’re a fan of monorepos or not, managing them requires a good set of toolchains to ensure the success and pain-free of managing large projects and complicated workflows.Ī popular recipe for setting up monorepo for JavScript projects is the combination of Yarn’s workspaces (existed since Yarn 1) and Lerna as a project manager.
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Yarn 2 ticks a quite a few check-boxes on the board that have been keeping developers discussing on how to manage JavaScript projects: Monorepos You can find the community repository on GitHub at. Yarn 2 is the new release of the revolutionary and well-established npm package manager Yarn which features improvements, such as Plug’n’Play, Plugins architecture, Monorepos, and improved workspaces support, Zero installs.
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