Need a reliable way to test if storybook page is ready programatically

[ywongau]

Is your feature request related to a problem? Please describe
Start-server-and-test is very reliable with storybook <= 5 because the HTTP endpoint isn't available until everything is built, but stop working with storybook 6 because the webserver is up before it is ready and shows a building n/m modules screen, therefore the endpoint test doesn't work anymore

Then in my CI, the timeout error happens a lot

TimeoutError: page.goto: Timeout 30000ms exceeded.
=========================== logs ===========================
navigating to "http://localhost:5002/iframe.html?id=taskfilterlist--story&viewMode=story", waiting until "domcontentloaded"
============================================================
Note: use DEBUG=pw:api environment variable and rerun to capture Playwright logs.page.goto: Timeout 30000ms exceeded.
=========================== logs ===========================
navigating to "http://localhost:5002/iframe.html?id=taskfilterlist--story&viewMode=story", waiting until "domcontentloaded"
============================================================
Note: use DEBUG=pw:api environment variable and rerun to capture Playwright logs.:
15 |
16 | const gotoStory = async (page: Page, id) => {
> 17 | await page.goto(http://${hostname}:5002/iframe.html?id=${id}&viewMode=story, {
| ^
18 | waitUntil: 'domcontentloaded',
19 | });

Describe the solution you'd like
A cli option to disable the progress screen

Describe alternatives you've considered
noo

Are you able to assist to bring the feature to reality?
no

Additional context

This ticket for Playwright was most likely caused by the same issue

[EddyVinck]

I just stumbled on this issue when Googling "storybook in ci page.goto timeout"

have you found a fix for this yet @ywongau ?

[ywongau]

I just stumbled on this issue when Googling "storybook in ci page.goto timeout"

have you found a fix for this yet @ywongau ?

Either set navigation timeout to a very big number or run with a static build

[AngelosTzetzias]

Either set navigation timeout to a very big number or run with a static build
@ywongau how do you set a navigation timeout? (explanation or a link to the docs would be very helpfull )