fix(adapter): pipe dev server output to console

[tanner-reits]

What is the current behavior?

Currently, the Playwright process doesn't relay any output from the dev server to the console. This can cause confusion for users if there is a build error in the Stencil project since nothing would be logged in the console and the process would appear to hang until the timeout is reached.

GitHub Issue Number: N/A

What is the new behavior?

This commit updates the default webServer configuration in the Playwright config to pipe the stdout output from the dev server through to the Playwright process.

Unfortunately, AFAICT there isn't a way to terminate the process when this happens. Playwright continuously polls the url until either it: returns a valid status code (200, 300, 400, etc.) or the process timeout is reached. Returning a 500 does not end the process and even returning a code like a 400 will allow tests to execute.

Documentation

Does this introduce a breaking change?

• Yes
• No

Testing

I confirmed that the dev server output is visible from the Playwright process now.

Also tested various cases trying to get the process to terminate, but was unsuccessful.

Other information

[christian-bromann]

👍

[rwaskiewicz]

Tested locally by creating a project (Stencil component starter) with our instructions at https://stenciljs.com/docs/testing/playwright/overview#set-up

I then created an intentional compiler error in the default component, and was able to see errors in the console.