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@fluentui/dom-utilities

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DOM utilities for use within Fluent web components

github.com/microsoft/fluentui

microsoft/fluentui

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/** * Determine whether a target is within a portal from perspective of root or optional parent. * This function only works against portal components that use the setPortalAttribute function. * If both parent and child are within the same portal this function will return false. * @param target - Element to query portal containment status of. * @param parent - Optional parent perspective. Search for containing portal stops at parent * (or root if parent is undefined or invalid.) */ export declare function portalContainsElement(target: HTMLElement, parent?: HTMLElement, doc?: Document): boolean;