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Last updated : Oct 28, 2020
Not on the current edition
This blip is not on the current edition of the Radar. If it was on one of the last few editions it is likely that it is still relevant. If the blip is older it might no longer be relevant and our assessment might be different today. Unfortunately, we simply don't have the bandwidth to continuously review blips from previous editions of the Radar Understand more
Oct 2020
Trial ? Worth pursuing. It is important to understand how to build up this capability. Enterprises should try this technology on a project that can handle the risk.

Yarn continues to be the package manager of choice for many teams. We're excited about Yarn 2, a major new release with a long list of changes and improvements. In addition to usability tweaks and improvements in the area of workspaces, Yarn 2 introduces the concept of zero-installs, which allows developers to run a project directly after cloning it. However, Yarn 2 includes some breaking changes which makes the upgrade nontrivial. It also defaults to plug'n'play (PnP) environments and at the same time doesn't support React Native in PnP environments. Teams can, of course, opt out of PnP or stay on Yarn 1. They should be aware, though, that Yarn 1 is now in maintenance mode.

May 2018
Trial ? Worth pursuing. It is important to understand how to build up this capability. Enterprises should try this technology on a project that can handle the risk.

Yarn is a fast, reliable and secured package manager for JavaScript. Using a lock file and a deterministic algorithm, Yarn is able to guarantee that an installation that worked on one system will work exactly the same way on any other system. By efficiently queuing up requests, Yarn maximizes network utilization and as a result we’ve seen faster package downloads. Yarn continues to be our tool of choice for JavaScript package management in spite of the latest improvements in npm (version 5).

Nov 2017
Assess ? Worth exploring with the goal of understanding how it will affect your enterprise.

Yarn is a new package manager that replaces the existing workflow for the npm client while remaining compatible with the npm registry. With the npm client, we may end up with a different tree structure under node_modules based on the order that dependencies are installed. This nondeterministic nature can cause "works on my machine" problems. By breaking the installation steps into resolution, fetching and linking, Yarn avoids these issues using deterministic algorithms and lockfiles and thus guarantees repeatable installations. We've also seen significantly faster builds in our continuous integration (CI) environment because of Yarn caching all the packages it downloads.

Mar 2017
Assess ? Worth exploring with the goal of understanding how it will affect your enterprise.
Published : Mar 29, 2017
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