[Feature] New headless chrome

[Smrtnyk]

Is it already possible to use new headless chrome with playwright?
https://developer.chrome.com/articles/new-headless/

[yury-s]

You can give it a try today, most of the stuff will work but we don't run our tests with it yet and some tests are know to fail, so be prepared for some functionality working in the current headless mode but failing in the new one:

  projects: [
    {
      name: 'chromium',
      use: {
        launchOptions: {
          ignoreDefaultArgs: ['--headless'],
          args: ['--headless=new']
        }
      },
    },

We'll announce separately when the new mode is fully supported.

[Smrtnyk]

tnx, I gave it a try, but it is spamming the playwright inspector windows being open, while browser was still in headless mode, and I had to press play all the time in order for tests to actually continue.
I guess I will wait for an official support.

[mirao]

@yury-s I think the correct option is ignoreDefaultArgs: ['--headless=old'] instead of ignoreDefaultArgs: ['--headless']

Just tested it in CodeceptJS + Playwright.

• When I use ignoreDefaultArgs: ['--headless'], Chromium will start with both options --headless=old and --headless=new. The new headless mode works in such case, but passing of both parameters is ambiguous.
• When I use ignoreDefaultArgs: ['--headless=old'], Chromium will start without the option --headless=old, but with --headless=new enabled which is what I expect

[mirao]

@yury-s I think the correct option is ignoreDefaultArgs: ['--headless=old'] instead of ignoreDefaultArgs: ['--headless']

I guess it might change by time. Maybe the older Chromium versions used --headless.
I'm testing it with Playwright 1.46.1 with Chromium 128