How can I update global packages in Yarn?
TL;DR:
As webjay says, you simply:
yarn global upgradein yarn version 1.2.1 onwards.
For earlier versions:
(cd ~/.config/yarn/global && yarn upgrade)Checking and repairing
Sadly, there is currently no yarn global check.
You can run yarn global add --force to reinstall all packages.
To check global packages, you can treat ~/.config/yarn/global/ like a local package, since:
~/.config/yarn/global/package.jsonhas dependencies for all global packages~/.config/yarn/global/node_modulescontains all the global packages.
Check all global packages, and reinstall only if an error is found:
$ (cd ~/.config/yarn/global && yarn check || yarn install --force)
Using yarn global add <package>@latest will upgrade a specific package if that is what you are trying to do.
Update
The recently added yarn global upgrade upgrades all packages. This did not exist at the time of the original answer.