Re: [w3ctag/design-reviews] CSS.highlights.highlightsFromPoint API (Issue #1043)

xiaochengh left a comment (w3ctag/design-reviews#1043)

Hi @ffiori, the TAG discussed it in a breakout today and are still concerned with adding an API that may block the main thread and cause layout thrashing. Per [Design Principles](https://www.w3.org/TR/design-principles/#synchronous), synchronous APIs should have short execution time. Are there other asynchronous alternatives that have been considered?

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