[Feature] Workspaces foreach namespace or glob support

[joshmeads]

• I'd be willing to implement this feature
• This feature can already be implemented through a plugin

Describe the user story

Given an application structure such as:

workspaces: [
  "packages/*",
  "services/*",
  "utils/*"
]

You may want to run a command on all subsets. eg. yarn workspaces foreach --include services/* run start. Currently, it appears the include flag only works with direct names eg. yarn workspaces foreach --include api <command>

Describe the solution you'd like

• Allow glob patterns in the --include/exclude flag.
• Allow certain workspaces such as yarn workspaces foreach --include-workspace services <command>. Similarly for --exclude-workspace

Command names are of course open to discussion.

Describe the drawbacks of your solution

Not sure. Open to feedback.

Describe alternatives you've considered

• Passing each manually into the script.
• Use lerna via lerna run with filter glob patterns.

Additional context

Previously discussed for Yarn 1 here:

• https://github.com/yarnpkg/rfcs/blob/master/accepted/0000-workspace-run-commands.md#--workspaces
• update workspace-run-commands to more detail rfcs#87

[arcanis]

I'd tend to say that the current feature set is low-level enough that you can implement the behaviour you're looking for directly within your scripts. This is for example what we do in ours.

[joshmeads]

@arcanis I'd agree with you that it's low level enough to implement this with scripts. Given the previous discussions around yarn 1, and given the push towards DX friendly workspaces, I thought it would be a useful addition to the toolset. The glob pattern primarily. I can look into the code and see if I can work on implementation if it is something people other than myself want, otherwise as you said - scripts are fine. 😄

[andrewmclagan]

It seems an incredibly common workflow? I'd suggest a core implementation would be handy to allot of teams.

[NixBiks]

Sorry for bringing this up again but whats the syntax to do something yarn workspaces foreach --include services/* run start?

[merceyz]

--include takes patterns of workspace names, not their paths.
To provide an example this would run on all workspaces with a name matching the provided pattern

yarn workspaces foreach --include "@yarnpkg/plugin-*" run build

--include #0 An array of glob pattern idents; only matching workspaces will be traversed
https://yarnpkg.com/cli/workspaces/foreach#options-include%20%230