FullscreenAlert is built on top of FullscreenModal with an API that is similar to Alert.
Accessibility tip (Web only)
Alerts require an accessibility label, which we set to title by default. However, if there's other text that gives the user better context to the alert, then you can pass an element id to accessibilityLabelledBy. Alternatively, you may directly provide a contextual label to accessibilityLabel.
Basic example
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