/**
 * Returns an absolute URL string that is safe to pass into Staffbase's
 * `openLink()`. We intentionally do NOT require `/openlink/`; if the platform
 * strips it, links can still open in-app by delegating to `openLink()`. Ported
 * from staffbase-alerts (identical to unack).
 * @param {string | null | undefined} href - Raw href as found on an <a> element.
 * @param {string} baseUrl - Base URL used to resolve relative hrefs (usually window.location.origin).
 * @returns {string | null} An absolute URL string, or null if it should not be handled.
 */
export declare const getInAppOpenLinkTarget: (href: string | null | undefined, baseUrl: string) => string | null;
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