Web App is Not Instrumented Warning is being displayed Even for App with just Backend Code Coverage

[mtapdilli]

Logs and screenshots

Versions

• What is this plugin's version? "@cypress/code-coverage": "^3.8.8"
• What is Cypress version? - "cypress": "^5.6.0"
• What is your operating system? - Windows
• How do you instrument your application? Cypress does not instrument web application code, so you need to do it yourself. - "nyc": "nyc nodemon server.js"
• 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? - No. This application is just a backend app with express server.

Describe the bug :
Seeing the warning [screenshot attached above] When executing the API tests [ For Express server ] using @cypress/code-coverage for code coverage. Report generation seems to be working fine. Raising the issue as requested by @bahmutov

[bahmutov]

another example in https://github.com/bahmutov/todomvc-express-api-test-coverage

[bahmutov]

🎉 This issue has been resolved in version 3.9.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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