add support to open the browser after ViteDevServer started without open configured

[userquin]

Description

We're adding none provider to Vitest browser to allow run tests in the browser without playwright/webdriverio.

Right now, the draft PR (vitest-dev/vitest#3674) will configure open = true before creating ViteDevServer: https://github.com/vitest-dev/vitest/pull/3674/files#diff-0820b575c16b5a3f5f4fab98f25d1a896a476dc1fe768b4ef79f49b2eaa9f19fR51-R52.

We want to delay opening the browser, and open it in the appropiate time: https://github.com/vitest-dev/vitest/pull/3674/files#diff-ead1606bb6c60ea8c5c6dea3c305fffa9ec9813b3c70f785aafd4349c71b5f2eR34-R36

Suggested solution

Just allow open url at any time

Alternative

No response

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

[patak-dev]

We exposed server.openBrowser() here: #11974. If open is false, and then you call this function I think it should work as you expect.

You mentioned in a DM that you wanted to control the loaded URL, no? So the default won't be enough if I understand correctly and you would need openBrowser to take an optional param to open a different URL. Is that correct?

[userquin]

You mentioned in a DM that you wanted to control the loaded URL, no? So the default won't be enough if I understand correctly and you would need openBrowser to take an optional param to open a different URL. Is that correct?

yes

EDIT: when I created Vitest PR it wasn't working