import React from 'react';
interface BlogImagePlaceholderProps {
    /** Cover-image URL. The hub passes a `useOgPlaceholderUrl({ title, siteName })`
     *  result; embedders pass their own pre-resolved URL. When null, the
     *  component renders nothing. */
    imageUrl: string | null;
    /** Used for the `alt` attribute. */
    title: string;
    className?: string;
}
/**
 * Pure presentation wrapper for a cover-image / OG-placeholder fallback.
 *
 * Outer must be inline-content-model so this placeholder is HTML-valid
 * when rendered inside a markdown `<p>` (e.g. via the chat shell's
 * compact `BlogCard` fallback). `<span className="block">` keeps the
 * same visual behavior as the prior `<div>` while satisfying the
 * phrasing-content constraint of its parent.
 *
 * If the `imageUrl` itself 404s (cold cache, transient failure), the
 * `onError` handler hides the broken-image icon so the parent's
 * `bg-ods-bg` shows through cleanly. Same recovery pattern every
 * cover-image render path uses.
 */
export declare function BlogImagePlaceholder({ imageUrl, title, className, }: BlogImagePlaceholderProps): React.JSX.Element | null;
export {};
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