Nx: Warning with lighthouse CI on build

[geromegrignon]

Current Behavior

After adding lighthouse ci to a nx workspace, it adds a .lighthouseci folder for report files when running the ci locally.

After that on building an app within the nx workspace, a warning appears :

Warning: Fell back to using 'fs' to identify .lighthouseci/lhr-1598951258904.html as deleted. Please open an issue at https://github.com/nrwl/nx so we can investigate.

Expected Behavior

Steps to Reproduce

Here is a repo to reproduce it : https://github.com/geromegrignon/spoon-starter :

• run nx build
• run npm run lhci
• run nx build <-- error in the console

Here are the steps starting from scratch :

• create a nx workspace with a default angular app
• install the lighthouse ci CLI : npm install -g @lhci/cli
• add a .lighthouserc.js config file :

module.exports = {
  ci: {
    collect: {
      staticDistDir: './dist/apps/<app-name>',
    },
    upload: {
      target: 'temporary-public-storage',
    },
  },
};

• run nx build
• run lhci autorun
• run nx build <-- error displayed in the console

Failure Logs

Warning: Fell back to using 'fs' to identify .lighthouseci/lhr-1598951258904.html as deleted. Please open an issue at https://github.com/nrwl/nx so we can investigate.

Environment

  nx : Not Found
  @nrwl/angular : 10.1.0
  @nrwl/cli : 10.1.0
  @nrwl/cypress : 10.1.0
  @nrwl/eslint-plugin-nx : Not Found
  @nrwl/express : Not Found
  @nrwl/jest : 10.1.0
  @nrwl/linter : Not Found
  @nrwl/nest : Not Found
  @nrwl/next : Not Found
  @nrwl/node : Not Found
  @nrwl/react : Not Found
  @nrwl/schematics : Not Found
  @nrwl/tao : 10.1.0
  @nrwl/web : Not Found
  @nrwl/workspace : 10.1.0
  typescript : 3.9.7

[tonivj5]

I'm having this issue too with cypress image snapshot:

Warning: Fell back to using 'fs' to identify #0.actual.png as deleted. Please open an issue at https://github.com/nrwl/nx so we can investigate.
Warning: Fell back to using 'fs' to identify #0.png as deleted. Please open an issue at https://github.com/nrwl/nx so we can investigate.

In my case, it adds an __image_snapshots__ folder into project-e2e/src/integration

[mandarini]

Hi there @geromegrignon !

I tried to reproduce your issue locally, and unfortunately I could not.

I installed Lighthouse CI globally, I cloned your repo, I built it, then I ran npm run lhci and then I built again, and I did not get a warning.

And here's the nx report from your repo (as you have already posted above):

Similarly, I created an Nx workspace from scratch, with a default Angular app, as you suggested, added a .lighthouserc.js file with the contents you suggested, I built, then I lhci autorun-ed, then I built again, and I got no warnings or errors.

Here's the nx report of my generated app (the same with your app):

Could you point me to any other information that may help me reproduce your issue?

[geromegrignon]

Hey @mandarini,

I feel sorry for that, i can't reproduce it anymore myself.

I'll close the issue by now.
@tonivj5 please open a dedicated issue

[Areen3]

Hi
that is not a nx problem,
it apears when:
create file in location
build/serve
move file in another location

previous location shows warning
but when you commit warnigns disappear

[skopekreep]

To add to @Areen3, git add . also removed the warnings without the need to commit.