/**
 * @fileoverview Share-an-article decision logic, decoupled from the browser
 * Web Share/Clipboard APIs so it stays trivially testable.
 *
 * Prefers the OS-native share sheet (`navigator.share`) when the caller
 * provides it — that sheet already lists Mail and installed social apps as
 * targets on supporting browsers/devices. Falls back to copying the URL to
 * the clipboard when native sharing isn't available, or when it fails for a
 * reason other than the user dismissing the share sheet.
 */
export interface ShareableArticle {
    title?: string;
    text?: string;
    url: string;
}
export interface ShareArticleDeps {
    /** Bound `navigator.share`, or `undefined` when the API is unsupported. */
    share?: (data: ShareableArticle) => Promise<void>;
    /** Bound `navigator.clipboard.writeText`. */
    writeText: (text: string) => Promise<void>;
}
export type ShareArticleResult = "shared" | "copied" | "cancelled";
export declare function shareArticle(article: ShareableArticle, deps: ShareArticleDeps): Promise<ShareArticleResult>;