Advice for encountering uncaught exceptions during test runs

[alexfinnarn]

During a test run, if Cypress encounters an unhandled exception, it fails the test run. Sometimes the exception relates to custom code, but sometimes it relates to third-party code and it might only happen intermittently.

Cypress provides some advice for handling these scenarios: https://docs.cypress.io/api/events/catalog-of-events#To-turn-off-all-uncaught-exception-handling

Cypress.on('uncaught:exception', (err, runnable) => {
  // returning false here prevents Cypress from
  // failing the test
  return false
})

You can add that to a describe() or it() block's scope or try to handle them more globally. What should the guidance be for encountering uncaught exceptions?

[dmundra]

I would say avoid it if possible unless the case of the third-party code and then comment the reason for the use. Similar to wait(), don't use but if you do comment the reason why.