TypeError: globalThis.__sbPostVisit is not a function

[matttk]

Summary

I don't have a repro right now (sorry), and all I can really say is that I did a big re-write to replace our datepicker components to use mantine.dev, instead of react-dates, and then I started noticing a new test flake.

FAIL app/components/BuildingBlocks/Dates/DateInput/DateInput.stories.tsx
Generic/Dates/DateInput › WithoutFutureDates › play-test

TypeError: globalThis.__sbPostVisit is not a function

I can't find anything about what sbPostVisit is, but I assume sb stands for storybook...

It's happening at random in any component that uses a DatePicker in our project. I have the latest version of Storybook, 8.4.6.

Update 1: Maybe related to this issue? storybookjs/test-runner#138

Update 2: I've determined they're all actual test fails, only that I don't get the real error. But everywhere where I get globalThis.__sbPostVisit is not a function corresponds to a failing test, which I can find by looking in Storybook locally (not sure how they were green in the CI before but maybe I updated something else, which broke the tests).

Additional information

No response

Create a reproduction

No response

[hasanayan]

We, too, started noticing this yesterday. It seems there are actual test failures but storybook is unable to provide a meaningful error message or the origin of the error. I get that error locally on my mac as well

[hasanayan]

@matttk I think "@storybook/test-runner": "0.20.1", fixed it for us

[matttk]

Ah, very cool. I'll update it today, but sounds like there was a problem and it's been fixed. I also never thought to look into the test-runner release notes directly, which in retrospect was a bit silly.