cypress: Cypress.on('uncaught:exception') receives CypressError instead of thrown error

@jennifer-shehane Please note that the regular expression you posted actually matches “any text starting with a character that is not one of () ORcdeilmoprstvxz” (all characters present in (ResizeObserver loop limit exceeded)), which is patently wrong and causes a lot of other errors to be possibly swallowed.

A simple way to safely-enough ignore just this specific error is:

Cypress.on('uncaught:exception', err => !err.message.includes('ResizeObserver loop limit exceeded'))

We changed how the errors are constructed in 4.6.0+, you’ll need to upgrade your Regex to match the newly constructed error:

const resizeObserverLoopErrRe = /^[^(ResizeObserver loop limit exceeded)]/
Cypress.on('uncaught:exception', (err) => {
    /* returning false here prevents Cypress from failing the test */
    if (resizeObserverLoopErrRe.test(err.message)) {
        return false
    }
})

I started to see the same issue after upgrading to version 10.2. Even using the workaround from @jennifer-shehane jennifer-shehane

const resizeObserverLoopErrRe = /^[^(ResizeObserver loop limit exceeded)]/
Cypress.on('uncaught:exception', (err) => {
    /* returning false here prevents Cypress from failing the test */
    if (resizeObserverLoopErrRe.test(err.message)) {
        return false
    }
})

Any ideas? Thanks

I am having the same issue after upgrading to 10.0.2 as well @willoliveira-air @jennifer-shehane . Below is my configuration:

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

While the cy.log and console.log statements are working as expected, it seems that Cypress can no longer ignore exceptions.

Using cy.viewport in multiple tests in the same file caused this issue for me; moving it to a before hook sidestepped it.

@alineborak Your error is different than the ResizeObserver one, so you would need to change the regex to look for Script error. Or better, don’t include the NewRelic tracker in your test env.

I also created a fresh bug ticket to shed some light on the issue, as this bug pertains to a newer version of Cypress: https://github.com/cypress-io/cypress/issues/22129

I started to see the same issue after upgrading to version 10.2. Even using the workaround from @jennifer-shehane jennifer-shehane

const resizeObserverLoopErrRe = /^[^(ResizeObserver loop limit exceeded)]/
Cypress.on('uncaught:exception', (err) => {
    /* returning false here prevents Cypress from failing the test */
    if (resizeObserverLoopErrRe.test(err.message)) {
        return false
    }
})

Any ideas? Thanks