[Question] Timeout Error

I just tried this piece of code:

const playwright = require('playwright');
try {
  await page.waitForSelector('.foo');
} catch (e) {
  if (e instanceof playwright.errors.TimeoutError) {
    // Do something if this is a timeout.
  }
  } else {
    console.log(err);
  }
}

I am running this with Jest however, so unsure if this affects it, but for me it ends up in the else branch. I assume that is not supposed to happen.

This does work:

if (err.name === 'TimeoutError')

[dgozman]

I think the issue could be with TimeoutError class being a different instance in the test (executed in vm script) vs jest-playwright environment (executed in top-level Node context). We had a similar issue with instanceof RegExp.

[pavelfeldman]

More details: https://github.com/microsoft/playwright/pull/1048