While in theory you could check-in your node_modules folder rather than the cache, in practice the node_modules contains a gigantic amount of files that frequently change location and mess with Git's optimizations.Next, ensure that your project is using Plug'n'Play to resolve dependencies via the cache folder and not from node_modules. You can change the version with yarn set version This is very easy starting from Yarn 2!įirst, check that you are using Yarn 2 or later using yarn -version. In order to make a project zero-install, you must be able to use it as soon as you clone it. How do you reach this "zero-install" state you're advocating for? From there, it becomes clear that the only sure way to prevent such issues is to run as little code as possible. And thanks to Murphy's law, we know that something that can fail will eventually fail. This is exactly what we mean: any code that runs is code that can fail. Note that these challenges are not unique to Yarn - you may remember a time when npm used to erase production servers due to a bug that reached one of their releases. so many things can go wrong, and not all of them are things we can control. Or maybe your credentials will rotate and you will start getting authentication issues. Or maybe the network will fail and your packages won't be available anymore. Or maybe your production environments will change and yarn install won't be able to write in the temporary directories anymore. While Yarn does its best to guarantee that what works now will keep working, there's always the off chance that a future Yarn release will introduce a bug that will prevent you from installing your project. The main way it does this is through a lockfile, which contains all the information needed for a project to be installed in a reproducible way across systems. Yarn does its best to guarantee that running yarn install twice will give you the same result in both cases. What does this do to my repository size?.Is it different from just checking-in the node_modules folder?.How does Yarn impact a project's stability?
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