67657a8710
Support a contrived/rare case where a <style> element has multiple text node children (this is usually only possible to recreate via javascript append) ... this PR fixes cases where there are subsequent text mutations to these nodes; previously these would have been lost * In this scenario, a new CSS comment may now be inserted into the captured `_cssText` for a <style> element to show where it should be broken up into text elements upon replay: `/* rr_split */` * The new 'can record and replay style mutations' test is the principal way to the problematic scenarios, and is a detailed 'catch-all' test with many checks to cover most of the ways things can fail * There are new tests for splitting/rebuilding the css using the rr_split marker * The prior 'dynamic stylesheet' route is now the main route for serializing a stylesheet; dynamic stylesheet were missed out in #1533 but that case is now covered with this PR This PR was originally extracted from #1475 so the initial motivation was to change the approach on stringifying <style> elements to do so in a single place. This is also the motivating factor for always serializing <style> elements via the `_cssText` attribute rather than in it's childNodes; in #1475 we will be delaying populating `_cssText` for performance and instead recorrding them as assets. Thanks for the detailed review to Justin Halsall <Juice10@users.noreply.github.com> & Yun Feng <https://github.com/YunFeng0817>
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2.5 KiB