We now commit protocol.ts files during the roll.
New utils/roll_browser.js helps with that.
This makes our installation very shallow:
- build installer;
- download browsers.
Firefox and WebKit require native promises to provide awaitPromise
functionality. When the Promise is overwritten, all evaluations
in the main world produce wrong Promise, so we wrap with async
function to get a native promise instead.
We now query selector and take textContent synchronously. This
avoids any issues with async processing: node being recycled,
detached, etc.
More methods will follow with the same atomic pattern.
Drive-by: fixed selector engine names being sometimes case-sensitive
and sometimes not.
We currently return undefined whenever we had an error trying
return the evaluation result by error. The most common error
is "execution context destroyed".
This produces very unexpected undefined from methods that do not
ever expect undefined. Instead, we should throw because we were
not able to return the result.
We currently have dispatchEventTask and waitForSelectorTask.
However, most selector-based operations make sense as tasks, to ensure
atomic execution, e.g. textContent(selector) or focus(selector).
This will fight hydration, elements recycling and other async issues.
In preparation, decouple tasks from selectors parsing so that
we can have common infrastructure for tasks.
- Gave all possible dom errors distinct names, and throw them on the node side.
- Separated errors into FatalDOMError and RetargetableDOMError.
Fatal errors are unrecoverable. Retargetable errors
could be resolved by requerying the selector.
- This exposed a number of unhandled 'notconnected' cases.
- Added helper functions to handle errors and ensure TypeScript catches
unhandled ones.
Element screenshot now waits for the element to become visible and
throws on detach.
Both screenshot methods accept a timeout and capture logs using Progress.
Also, carefully handling exceptions and restoring the viewport.
WebKit and Firefox are only able to continue redirects.
Firefox is faking it on the backend, so you can't even stall it.
Instead, we just do not fire routes for redirects on all browsers,
to avoid surprises.
In addition to `PLAYWRIGHT_DOWNLOAD_HOST` env variable, this patch adds a per-browser
configuration:
- `PLAYWRIGHT_CHROMIUM_DOWNLOAD_HOST`
- `PLAYWRIGHT_FIREFOX_DOWNLOAD_HOST`
- `PLAYWRIGHT_WEBKIT_DOWNLOAD_HOST`
