'ProjectGraphError' from `@nx/vite` breaking all targets and built-in commands about nx

[FrozenPandaz]

The short explanation is that a plugin failing to construct nodes means that Nx cannot properly construct a task graph for running any tasks. The plugin could have constructed a node which should have been depended upon by the task being run.

The long explanation is...

• To run tasks, Nx creates a Task Graph.
• The Task Graph is a function of the Project Graph. The definition of projects, and the relationships between them are used to create a task graph with relationships between tasks.
• Nx uses plugins to construct the project graph based on config files in the repo.

So to put it all together in a concrete example...

A serve task you are running could be configured as such meaning that it depends on the build of any of it's dependencies:

{
  dependsOn: ['^build']
  ...
}

Now, we know.. there's no way that the jest plugin which only ever defines test targets is going to change this execution... but nothing specifies this to Nx.

So if the jest plugin fails to create nodes.. it could have failed to do any number of things it intended to do.

1. It failed to create a test target totally unrelated to the serve task above (this is the reality)
2. It failed to create a build target which would be related to the serve task above
3. It creates a different serve target for that same project which would mean.. the target which should be run should be completely different if the plugin does not fail.

Ultimately, the Project Graph was not constructed properly.. and Nx is not sure what is missing and whether or not it is important to running the tasks. So Nx will error before running any task.

Does this make sense and answer your question as to why failing to parse a vite.config.js is a catastrophic failure?

As for the vite failure, if you have any more questions there, @Coly010 could maybe help you.

[ontoneio]

I realize this could be specific to the UnoCSS from 'unocss/vite' imports configuration for exports, but what I am not understanding is why unrelated projects break with this and why I can't run things like nx report because of a simple import error in an unrelated project. I also kept seeing Failed to process project graph. Run "nx reset" to fix this. Please report the issue if you keep seeing it. so I wanted to report the issue.

My vite config us using:

    commonjsOptions: {
      transformMixedEsModules: true,
    },

So I am not sure why such a small thing could break other projects.