`all:true` not working with Next application

Versions

• What is this plugin’s version? 3.9.12
• What is Cypress version? 8.2.0
• What is your operating system? Mac OS 12.1
• What is the shell? ZSH
• What is the Node version? 14.18.2
• What is the NPM version? 8.3.2
• How do you instrument your application? Cypress does not instrument web application code, so you need to do it yourself. Like mentioned in the installation guide here
• When running tests, if you open the web application in regular browser, and open DevTools, do you see window.__coverage__ object? Can you paste a screenshot?

I don’t think I do but I get coverage in the end.

• Is there .nyc_output folder? Is there .nyc_output/out.json file. Is it empty? Can you paste at least part of it so we can see the keys and file paths?

This is generated, but no empty objects for empty files.

• Do you have any custom NYC settings in package.json (nyc object) or in other NYC config files

  "nyc": {
    "all": true
  }

• Do you run Cypress tests in a Docker container? No

Describe the bug I use the option all:true but I don’t see all files. For example I have some files in pages/.. which are not displayed at all. It seems that just loaded files are used.

The NYC options from the package.json are used because I fiddled around with the include parameter and it is filtering, so that seems to work. I don’t see any difference in the output if I use true or false for the all option.

[rbong]

You may run into problems merging the Jest and Cypress coverage. It worked in simple tests but I have run into more issues.

Cypress coverage seems to have anonymous function names, and Jest coverage has named function names.

I am not sure it is possible just to drop the Istanbul Babel function onto the end of the Babel config and have it automatically work. I am still researching the exact cause of the issues merging.

[rbong]

For my purposes I’m able to merge coverage from jest --coverage --coverageReporters json with the Cypress coverage output using istanbul-lib-coverage so I’m abandoning this PR. Sorry.