export interface ThreadLinkPreview {
    title: string;
    description: string;
    imageUrl: string | null;
}
export declare function extractThreadPreviewImageUrl(threadData: string): string | null;
export declare function buildThreadLinkPreviewMeta(preview: ThreadLinkPreview | null): ({
    title: string;
    name?: undefined;
    property?: undefined;
    content?: undefined;
} | {
    title?: undefined;
    name: string;
    content: string;
    property?: undefined;
} | {
    title?: undefined;
    name?: undefined;
    property: string;
    content: string;
})[];
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