browser.newContext: options.isMobile is not supported in Firefox

[hoIIer]

When I tried to run a test with mobile emulation, I see the error in the title.

ran test with npx folio

const assert = require('assert');
const { devices } = require('playwright');
const { folio } = require('@playwright/test');

const fixtures = folio.extend();

fixtures.contextOptions.override(async ({ contextOptions }, runTest) => {
  await runTest({
    ...contextOptions,
    ...devices['iPhone SE'],
  });
});

const { describe, it } = fixtures.build();

...

Separate, how could I tell it to run against e.g. an array of mobile devices as opposed to a single one?

[mxschmitt]

Closing as part of the triage process since the new test-runner got released yesterday. Please create a new issue if its still reproducible.